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                           <rdf:li><rdf:Description xmpDM:name="Overview Remote User Authentication Using Secret Keys Kerberos V4 Kerberos V5 Remote User Authentication Using Public Keys Federated Identity Management" xmpDM:startTime="7933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="These slides are based partly on Lawrie Brown’s slides supplied with William Stallings’s book “Cryptography and Network Security: Principles and" xmpDM:startTime="7933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Practice,” 7th Ed, 2017." xmpDM:startTime="7933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="7933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="User Authentication Four means of authenticating user's identity: Based on something the individual Knows - e.g.," xmpDM:startTime="35767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="password, PIN Possesses - e.g.," 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xmpDM:name="Overview Remote User Authentication Using Secret Keys Kerberos V4 Kerberos V5 Remote User Authentication Using Public Keys Federated Identity Management" xmpDM:startTime="36267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="These slides are based partly on Lawrie Brown’s slides supplied with William Stallings’s book “Cryptography and Network Security: Principles and" xmpDM:startTime="36267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Practice,” 7th Ed, 2017." xmpDM:startTime="36267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="36267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="User Authentication Four means of authenticating user's identity: Based on something the individual Knows - e.g.," xmpDM:startTime="36700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="password, PIN Possesses - e.g.," xmpDM:startTime="36700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="key, token, smartcard Is (static biometrics) - e.g.," xmpDM:startTime="36700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="fingerprint, retina Does (dynamic biometrics) - e.g.," xmpDM:startTime="36700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="voice, sign Can use alone or combined." xmpDM:startTime="36700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All have issues May be one-way or mutual Key issues are Confidentiality – to protect session keys Timeliness – to" xmpDM:startTime="36700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="prevent replay attacks Ref: http://en.wikipedia.org/wiki/Mutual_authentication" xmpDM:startTime="36700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="36700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Replay Attacks A valid signed message is copied and later resent." xmpDM:startTime="215900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Simple replay: No timestamp Repetition that can be logged: time stamped message within valid time Repetition that cannot be" xmpDM:startTime="215900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="detected: Original message replaced with a new message Backward replay without modification: Source’s message back to the source Countermeasures include" xmpDM:startTime="215900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Use of sequence numbers (generally impractical) Timestamps (needs synchronized clocks) Challenge/response (using unique nonce) Ref: http://en.wikipedia.org/wiki/Replay_attack," xmpDM:startTime="215900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="http://en.wikipedia.org/wiki/Reflection_attack" xmpDM:startTime="215900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="215900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Needham Schroeder Protocol Everyone has a shared secret key with KDC KDC generates session keys If someone can crack one" xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="KS, he can replay 3, block 4." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Then masquerade as A." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDA || IDB || N1 E(Ka, [Ks || IDA || IDB || N1]) || E(Kb, [Ks || IDA]) E(Kb, [Ks" xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDA]) E(Ks, N2) E(Ks, f(N2)) 1." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi I am A." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="I want to talk to B." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="My Nonce is N1." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="2." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the session key and a message for B 3." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi B, I want to talk to you." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a ticket from KDC." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ok." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is my nonce." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Prove that you can decrypt it." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="5." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a function of your nonce." xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="A B KDC Ref: http://en.wikipedia.org/wiki/Needham%E2%80%93Schroeder_protocol" xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="378000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Denning’s Modification Include timestamps Needs synchronized clocks." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDA || IDB E(Ka, [Ks || IDA || IDB || T]) || E(Kb, [Ks || IDA|| T]) E(Kb, [Ks ||" xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDA || T]) E(Ks, N2) E(Ks, f(N2)) 1." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi I am A." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="I want to talk to B." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="2." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the session key and a message for B 3." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi B, I want to talk to you." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a ticket from KDC." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="533133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description 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xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Then masquerade as A." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDA || IDB || N1 E(Ka, [Ks || IDA || IDB || N1]) || E(Kb, [Ks || IDA]) E(Kb, [Ks" xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDA]) E(Ks, N2) E(Ks, f(N2)) 1." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi I am A." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="I want to talk to B." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="My Nonce is N1." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="2." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the session key and a message for B 3." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi B, I want to talk to you." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a ticket from KDC." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ok." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is my nonce." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Prove that you can decrypt it." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="5." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a function of your nonce." xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="A B KDC Ref: http://en.wikipedia.org/wiki/Needham%E2%80%93Schroeder_protocol" xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="572833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Denning’s Modification Include timestamps Needs synchronized clocks." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDA || IDB E(Ka, [Ks || IDA || IDB || T]) || E(Kb, [Ks || IDA|| T]) E(Kb, [Ks ||" xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDA || T]) E(Ks, N2) E(Ks, f(N2)) 1." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi I am A." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="I want to talk to B." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="2." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the session key and a message for B 3." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi B, I want to talk to you." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a ticket from KDC." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ok." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is my nonce." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Prove that you can decrypt it." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="5." xmpDM:startTime="599067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a 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xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the session key, B’s Nonce, and Time 1." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is previous ticket from KDC with my new nonce." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="A B KDC HI, this is B." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="A wants to talk to me." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Time is TB IDB || NB || E(KB, [IDA|| NA || TB]) E(KB, [IDA|| KS || TB]) || N’A 2." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="I was able to decipher your new nonce." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is my new nonce." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="N’B ||E(KS, N’A) 3." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is your new Nonce." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="E(KS, N’B) 4." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ok." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the session key from KDC, your time, and nonce." xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Next Time:" xmpDM:startTime="625600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="One-Way Authentication for Email B is not up, when A wants to send email IDA || IDB || N1 E(Ka," xmpDM:startTime="899867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="[Ks || IDA || IDB || N1 || E(Kb, [Ks || 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xmpDM:name="Authenticates that A sent the message." xmpDM:startTime="899867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/E-mail_authentication" xmpDM:startTime="899867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="899867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview of Kerberos Allows two users (or client and server) to authenticate each other over an insecure network Named after" xmpDM:startTime="1076967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="the Greek mythological character Kerberos (or Cerberus), known in Greek mythology as being the monstrous three-headed guard dog of Hades" xmpDM:startTime="1076967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Designed originally for Project Athena at M.I.T." xmpDM:startTime="1076967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Implementation freely available from M.I.T." xmpDM:startTime="1076967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="V5 is an Internet Standard (RFC 4120) Windows 2000/XP/Server 2003/Vista use Kerberos as their default authentication mechanism Apple's Mac OS" xmpDM:startTime="1076967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="X clients and servers also use Kerberos Apache HTTP Server, Eudora, NFS, OpenSSH, rcp (remote copy), rsh, X window system" xmpDM:startTime="1076967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="allow using Kerberos for authentication." xmpDM:startTime="1076967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1076967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview (Cont) Protects against eavesdropping and replay attacks Uses a trusted third party (Authentication Server) and symmetric key cryptography First" xmpDM:startTime="1210067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="3 versions are no longer in use." xmpDM:startTime="1210067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="V5 is a generalization of V4 with several problems fixed and additional features." xmpDM:startTime="1210067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="It is easier to understand V5 if you know V4 Learn V4's features and mistakes Ref: http://en.wikipedia.org/wiki/Kerberos_(protocol)" xmpDM:startTime="1210067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1210067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1300733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="1841900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="1841900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="1841900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="1841900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="1841900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1861533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="1865567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="1865567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="1865567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="1865567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="1865567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1888300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="1945267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="1945267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="1945267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="1945267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="1945267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1957167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="1966033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="1966033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="1966033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="1966033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="1966033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="1995067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2013667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2013667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2013667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2013667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2013667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2051167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2060633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2060633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2060633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2060633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2060633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2087100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview (Cont) Protects against eavesdropping and replay attacks Uses a trusted third party (Authentication Server) and symmetric key cryptography First" xmpDM:startTime="2089400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="3 versions are no longer in use." xmpDM:startTime="2089400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="V5 is a generalization of V4 with several problems fixed and additional features." xmpDM:startTime="2089400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="It is easier to understand V5 if you know V4 Learn V4's features and mistakes Ref: http://en.wikipedia.org/wiki/Kerberos_(protocol)" xmpDM:startTime="2089400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2089400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2090267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview (Cont) Protects against eavesdropping and replay attacks Uses a trusted third party (Authentication Server) and symmetric key cryptography First" xmpDM:startTime="2128100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="3 versions are no longer in use." xmpDM:startTime="2128100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="V5 is a generalization of V4 with several problems fixed and additional features." xmpDM:startTime="2128100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="It is easier to understand V5 if you know V4 Learn V4's features and mistakes Ref: http://en.wikipedia.org/wiki/Kerberos_(protocol)" xmpDM:startTime="2128100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2128100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2128933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2129600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2129600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2129600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2129600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2129600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont) Authenticator: Name and time encrypted with a session key." xmpDM:startTime="2133100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Sent from client to server with the ticket and from server to client." xmpDM:startTime="2133100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Credentials: Session key + Ticket User enters a name and password." xmpDM:startTime="2133100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Client converts the password to a key Ku." xmpDM:startTime="2133100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TGT and the session key are good for a limited time (21 hours)." xmpDM:startTime="2133100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2133100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2133767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2133767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2133767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2133767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2133767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2134933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2137633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2137633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2137633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2137633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2137633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2142367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2143933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2143933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2143933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2143933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2143933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2146100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2150000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2150000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2150000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2150000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2150000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2158933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2159567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2159567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2159567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2159567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2159567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2182633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2193533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2193533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2193533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2193533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2193533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2241767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2242900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2242900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2242900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2242900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2242900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2244700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2419733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2419733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2419733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2419733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2419733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont) Authenticator: Name and time encrypted with a session key." xmpDM:startTime="2446800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Sent from client to server with the ticket and from server to client." xmpDM:startTime="2446800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Credentials: Session key + Ticket User enters a name and password." xmpDM:startTime="2446800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Client converts the password to a key Ku." xmpDM:startTime="2446800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TGT and the session key are good for a limited time (21 hours)." xmpDM:startTime="2446800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2446800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2458733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2458733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2458733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2458733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2458733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2459367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2509867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2509867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2509867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2509867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2509867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont) Authenticator: Name and time encrypted with a session key." xmpDM:startTime="2510767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Sent from client to server with the ticket and from server to client." xmpDM:startTime="2510767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Credentials: Session key + Ticket User enters a name and password." xmpDM:startTime="2510767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Client converts the password to a key Ku." xmpDM:startTime="2510767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TGT and the session key are good for a limited time (21 hours)." xmpDM:startTime="2510767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2510767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2519600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2519600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2519600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2519600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2519600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2520100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview (Cont) Protects against eavesdropping and replay attacks Uses a trusted third party (Authentication Server) and symmetric key cryptography First" xmpDM:startTime="2520233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="3 versions are no longer in use." xmpDM:startTime="2520233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="V5 is a generalization of V4 with several problems fixed and additional features." xmpDM:startTime="2520233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="It is easier to understand V5 if you know V4 Learn V4's features and mistakes Ref: http://en.wikipedia.org/wiki/Kerberos_(protocol)" xmpDM:startTime="2520233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2520233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2520767" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2545433" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2545433" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2545433" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2545433" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2545433" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2548033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2548500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2548500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2548500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2548500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2548500" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont) Authenticator: Name and time encrypted with a session key." xmpDM:startTime="2548600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Sent from client to server with the ticket and from server to client." xmpDM:startTime="2548600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Credentials: Session key + Ticket User enters a name and password." xmpDM:startTime="2548600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Client converts the password to a key Ku." xmpDM:startTime="2548600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TGT and the session key are good for a limited time (21 hours)." xmpDM:startTime="2548600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2548600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Key Design Principles The network is open  Need a proper secret key to understand the messages received (except message" xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1, which is in clear) Every client and server has a pre-shared secret with the AS." xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="AS and Ticket Granting Server (TGS) are logically separate but share a secret key Both AS and TGS are stateless" xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and do not need to remember the permissions granted." xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All the state is in the tickets." xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="(Day pass is just a longer term ticket) Longer term secrets are used less frequently." xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Short term secrets are created and destroyed after a limited use." xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Ticket_Granting_Ticket" xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2588400" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont) Authenticator: Name and time encrypted with a session key." xmpDM:startTime="2609267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Sent from client to server with the ticket and from server to client." xmpDM:startTime="2609267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Credentials: Session key + Ticket User enters a name and password." xmpDM:startTime="2609267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Client converts the password to a key Ku." xmpDM:startTime="2609267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TGT and the session key are good for a limited time (21 hours)." xmpDM:startTime="2609267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2609267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2609667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2609667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2609667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2609667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2609667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2642667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2643667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2643667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2643667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2643667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2643667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2644567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2648900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2648900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2648900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2648900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2648900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2654667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2658100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2658100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2658100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2658100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2658100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2658900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2660533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2660533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2660533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2660533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2660533" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2661267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2662233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2662233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2662233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2662233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2662233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange IDV || TicketG || AuthenticatorC TicketG = E(KG, [KCG ||IDC || ADC || IDG || TS2" xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| Lifetime2]) AuthenticatorC=E(KCG, [IDC || ADC ||TS3]) IDC || ADC || TS1 TicketV || AuthenticatorC TicketV = E(KV, [KCV ||" xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="IDC ||ADC ||IDV ||TS4 ||Lifetime4]) AuthenticatorC = E(KCV, [IDC || ADC || TS5]) E(KCV, [TS5+1]) E(KCG, [KCV || IDV ||" xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TS4 || TicketV]) TicketV = E(KV, [KCV || IDC || ADC ||IDV ||TS4 || Lifetime4]) Server V Client C Authentication" xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Server A Ticket Granting Server G E(KC, [KCG || IDG || TS2 || Lifetime2 || TicketG]) TicketG = E(KG, [KCG" xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="|| IDC || ADC ||IDG || TS2 || Lifetime2]} User name Network Address of Computer 3." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to communicate with PrintServer." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his day pass." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi! Jain@cse would like to use the network today 2." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is a day pass for jain@cse 5." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Hi jain@cse wants to communicate with you." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is his ticket." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="6." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Perfect." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Let us use the session key in your ticket for mutual authentication." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="4." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Here is the ticket and session key for jain@cse to communicate with PrintServer." xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2663200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts Authentication Server (AS): Physically secure node with complete authentication database Principal: Authentication Server A, Ticket Granting Server" xmpDM:startTime="2665967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="G, Client (Computer) C, User (Human) U, Server V Ticket Granting Server (TGS) Keys: Kcg, Kcv, Kag, Ku, Kgv Ticket:" xmpDM:startTime="2665967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encrypted information." xmpDM:startTime="2665967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All current V4 implementations use DES." xmpDM:startTime="2665967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ticket Granting Ticket (TGT): Allows user to get tickets from TGS" xmpDM:startTime="2665967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont) Authenticator: Name and time encrypted with a session key." xmpDM:startTime="2667133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Sent from client to server with the ticket and from server to client." xmpDM:startTime="2667133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Credentials: Session key + Ticket User enters a name and password." xmpDM:startTime="2667133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Client converts the password to a key Ku." xmpDM:startTime="2667133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="TGT and the session key are good for a limited time (21 hours)." xmpDM:startTime="2667133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2667133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Key Design Principles The network is open  Need a proper secret key to understand the messages received (except message" xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1, which is in clear) Every client and server has a pre-shared secret with the AS." xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="AS and Ticket Granting Server (TGS) are logically separate but share a secret key Both AS and TGS are stateless" xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and do not need to remember the permissions granted." xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All the state is in the tickets." xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="(Day pass is just a longer term ticket) Longer term secrets are used less frequently." xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Short term secrets are created and destroyed after a limited use." xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Ticket_Granting_Ticket" xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2675200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-Realm Authentication Realm: One AS and its clients and servers Request ticket for local TGS Ticket for local TGS Request" xmpDM:startTime="2873800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ticket for Remote TGS Ticket for Remote TGS Request ticket for Remote Server Ticket for Remote Server Request Remote Service" xmpDM:startTime="2873800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Local AS+TGS Remote TGS" xmpDM:startTime="2873800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Key Design Principles The network is open  Need a proper secret key to understand the messages received (except message" xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="1, which is in clear) Every client and server has a pre-shared secret with the AS." xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="AS and Ticket Granting Server (TGS) are logically separate but share a secret key Both AS and TGS are stateless" xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and do not need to remember the permissions granted." xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="All the state is in the tickets." xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="(Day pass is just a longer term ticket) Longer term secrets are used less frequently." xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Short term secrets are created and destroyed after a limited use." xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Ticket_Granting_Ticket" xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="2875100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-Realm Authentication Realm: One AS and its clients and servers Request ticket for local TGS Ticket for local TGS Request" xmpDM:startTime="2877067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ticket for Remote TGS Ticket for Remote TGS Request ticket for Remote Server Ticket for Remote Server Request Remote Service" xmpDM:startTime="2877067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Local AS+TGS Remote TGS" xmpDM:startTime="2877067" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Privacy and Integrity Kerberos V4 uses an extension to CBC With CBC, only two blocks are affected by a change." xmpDM:startTime="3026367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Propagating Cipher Block Chaining (PCBC) causes all blocks to change." xmpDM:startTime="3026367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation" xmpDM:startTime="3026367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Source: Wikipedia" xmpDM:startTime="3026367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-Realm Authentication Realm: One AS and its clients and servers Request ticket for local TGS Ticket for local TGS Request" xmpDM:startTime="3026867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ticket for Remote TGS Ticket for Remote TGS Request ticket for Remote Server Ticket for Remote Server Request Remote Service" xmpDM:startTime="3026867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Local AS+TGS Remote TGS" xmpDM:startTime="3026867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Privacy and Integrity Kerberos V4 uses an extension to CBC With CBC, only two blocks are affected by a change." xmpDM:startTime="3076367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Propagating Cipher Block Chaining (PCBC) causes all blocks to change." xmpDM:startTime="3076367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation" xmpDM:startTime="3076367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Source: Wikipedia" xmpDM:startTime="3076367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-Realm Authentication Realm: One AS and its clients and servers Request ticket for local TGS Ticket for local TGS Request" xmpDM:startTime="3077633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ticket for Remote TGS Ticket for Remote TGS Request ticket for Remote Server Ticket for Remote Server Request Remote Service" xmpDM:startTime="3077633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Local AS+TGS Remote TGS" xmpDM:startTime="3077633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Privacy and Integrity Kerberos V4 uses an extension to CBC With CBC, only two blocks are affected by a change." xmpDM:startTime="3253167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Propagating Cipher Block Chaining (PCBC) causes all blocks to change." xmpDM:startTime="3253167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation" xmpDM:startTime="3253167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Source: Wikipedia" xmpDM:startTime="3253167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Issues Names, Instance, Realm (non standard)." xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Limited to 40 Char." xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Only DES encryption." xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Not strong." xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Only IPv4 addresses." xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="No IPv6 or ISO CLNP addresses." xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Byte ordering indicated in the message (ASN.1" xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="better) Maximum life time limited to 21 hours: 8 bit life time in units of 5 minutes No delegation." xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="A server cannot access another server on behalf of the client." xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-realm authentication limited to pairs  N2 pairs Double encryption of the ticket: Kclient[Kserver[...]]" xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Propagating Cipher Block Chaining (PCBC) does not detect interchange of cipher blocks No subsession keys for long sessions Brute force" xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="password attack" xmpDM:startTime="3442000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Abstract Syntax Notation One Joint ISO and ITU-T standard, Original 1984, latest 2008." xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Used to specify protocol data structures X.400" xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="electronic mail, X.500" xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and LDAP directory services, H.323" xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="VOIP, SNMP, etc use ASN.1" xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Pre-Defined: 1=Boolean, 2=Integer, 3=Bit String, 4=Octet String, 5=Null, 6=Object Identifier, 9=Real Constructed: SEQUENCE (structure), SEQUENCE OF (lists), CHOICE, ..." xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One" xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="3803000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="3915633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="3915633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="3989467" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="3989467" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="3989467" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="3989467" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="3989467" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="3989467" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4006033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4006033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4018800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4018800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4018800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4018800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4018800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4018800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4060367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4081100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4081100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4081100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4081100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4081100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4081100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4081667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4081667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4084567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4084567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4084567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4084567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4084567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4084567" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4085233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4085233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4086200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4086200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4086200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4086200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4086200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4086200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4086600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4262600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4262600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4262600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4262600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4262600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4262600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4262933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4262933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Abstract Syntax Notation One Joint ISO and ITU-T standard, Original 1984, latest 2008." xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Used to specify protocol data structures X.400" xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="electronic mail, X.500" xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and LDAP directory services, H.323" xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="VOIP, SNMP, etc use ASN.1" xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Pre-Defined: 1=Boolean, 2=Integer, 3=Bit String, 4=Octet String, 5=Null, 6=Object Identifier, 9=Real Constructed: SEQUENCE (structure), SEQUENCE OF (lists), CHOICE, ..." xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One" xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4263100" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4263700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4263700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4273033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4273033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4273033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4273033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4273033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4273033" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4273967" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4290233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4290233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4290233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4290233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4290233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4290233" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4290433" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4290433" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Abstract Syntax Notation One Joint ISO and ITU-T standard, Original 1984, latest 2008." xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Used to specify protocol data structures X.400" xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="electronic mail, X.500" xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and LDAP directory services, H.323" xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="VOIP, SNMP, etc use ASN.1" xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Pre-Defined: 1=Boolean, 2=Integer, 3=Bit String, 4=Octet String, 5=Null, 6=Object Identifier, 9=Real Constructed: SEQUENCE (structure), SEQUENCE OF (lists), CHOICE, ..." xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One" xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4290900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4295300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4295300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Abstract Syntax Notation One Joint ISO and ITU-T standard, Original 1984, latest 2008." xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Used to specify protocol data structures X.400" xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="electronic mail, X.500" xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and LDAP directory services, H.323" xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="VOIP, SNMP, etc use ASN.1" xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Pre-Defined: 1=Boolean, 2=Integer, 3=Bit String, 4=Octet String, 5=Null, 6=Object Identifier, 9=Real Constructed: SEQUENCE (structure), SEQUENCE OF (lists), CHOICE, ..." xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One" xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4295900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4297367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4297367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4298333" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4298333" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4298333" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4298333" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4298333" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4298333" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4299133" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4299700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4299700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4299700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4299700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4299700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4299700" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4299867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4299867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Abstract Syntax Notation One Joint ISO and ITU-T standard, Original 1984, latest 2008." xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Used to specify protocol data structures X.400" xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="electronic mail, X.500" xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and LDAP directory services, H.323" xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="VOIP, SNMP, etc use ASN.1" xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Pre-Defined: 1=Boolean, 2=Integer, 3=Bit String, 4=Octet String, 5=Null, 6=Object Identifier, 9=Real Constructed: SEQUENCE (structure), SEQUENCE OF (lists), CHOICE, ..." xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One" xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4300267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4301267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4301267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4301633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4301633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4301633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4301633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4301633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4301633" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4302000" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V5 Names, Instance, Realm have ASN.1" xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="names." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Can be any length." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Any encryption." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encryption scheme coded." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Any type of addresses." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Address type specified." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Byte ordering Explicit Start time and End time." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Can have arbitrary life times." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Delegation possible by requesting proxy able tickets." xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-realm authentication hierarchy No Double encryption of the ticket Explicit integrity mechanism detects block interchange Subsession keys for long sessions" xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Password attack made difficult by a pre-authentication mechanism" xmpDM:startTime="4317933" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4319367" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V5 Names, Instance, Realm have ASN.1" xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="names." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Can be any length." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Any encryption." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encryption scheme coded." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Any type of addresses." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Address type specified." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Byte ordering Explicit Start time and End time." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Can have arbitrary life times." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Delegation possible by requesting proxy able tickets." xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-realm authentication hierarchy No Double encryption of the ticket Explicit integrity mechanism detects block interchange Subsession keys for long sessions" xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Password attack made difficult by a pre-authentication mechanism" xmpDM:startTime="4323667" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4335167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4335267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4335267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4335267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4335267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4335267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4335267" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4335600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4335600" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Abstract Syntax Notation One Joint ISO and ITU-T standard, Original 1984, latest 2008." xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Used to specify protocol data structures X.400" xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="electronic mail, X.500" xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and LDAP directory services, H.323" xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="VOIP, SNMP, etc use ASN.1" xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Pre-Defined: 1=Boolean, 2=Integer, 3=Bit String, 4=Octet String, 5=Null, 6=Object Identifier, 9=Real Constructed: SEQUENCE (structure), SEQUENCE OF (lists), CHOICE, ..." xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One" xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4336200" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Issues Names, Instance, Realm (non standard)." xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Limited to 40 Char." xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Only DES encryption." xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Not strong." xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Only IPv4 addresses." xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="No IPv6 or ISO CLNP addresses." xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Byte ordering indicated in the message (ASN.1" xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="better) Maximum life time limited to 21 hours: 8 bit life time in units of 5 minutes No delegation." xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="A server cannot access another server on behalf of the client." xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-realm authentication limited to pairs  N2 pairs Double encryption of the ticket: Kclient[Kserver[...]]" xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Propagating Cipher Block Chaining (PCBC) does not detect interchange of cipher blocks No subsession keys for long sessions Brute force" xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="password attack" xmpDM:startTime="4336833" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Abstract Syntax Notation One Joint ISO and ITU-T standard, Original 1984, latest 2008." xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Used to specify protocol data structures X.400" xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="electronic mail, X.500" xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="and LDAP directory services, H.323" xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="VOIP, SNMP, etc use ASN.1" xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Pre-Defined: 1=Boolean, 2=Integer, 3=Bit String, 4=Octet String, 5=Null, 6=Object Identifier, 9=Real Constructed: SEQUENCE (structure), SEQUENCE OF (lists), CHOICE, ..." xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Ref: http://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One" xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4341300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4341900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Example" xmpDM:startTime="4341900" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules ASN.1" xmpDM:startTime="4342300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="only specifies the structure." xmpDM:startTime="4342300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding rules indicate how to encode the structure in to bits on the wire." xmpDM:startTime="4342300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Examples: Basic Encoding Rules (BER), Packed Encoding Rules (PER), XML Encoding rules (XER), Distinguished Encoding Rules (DER), ..." xmpDM:startTime="4342300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="In BER, everything is encoded as Tag-Length-Value." xmpDM:startTime="4342300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="" xmpDM:startTime="4342300" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4342733" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V5 Names, Instance, Realm have ASN.1" xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="names." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Can be any length." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Any encryption." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encryption scheme coded." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Any type of addresses." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Address type specified." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Byte ordering Explicit Start time and End time." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Can have arbitrary life times." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Delegation possible by requesting proxy able tickets." xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-realm authentication hierarchy No Double encryption of the ticket Explicit integrity mechanism detects block interchange Subsession keys for long sessions" xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Password attack made difficult by a pre-authentication mechanism" xmpDM:startTime="4343167" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example John Miller, 126 Main Street, Big City, MO 63130 7E 126 2F Len 9A" xmpDM:startTime="4377800" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V5 Names, Instance, Realm have ASN.1" xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="names." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Can be any length." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Any encryption." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encryption scheme coded." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Any type of addresses." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Address type specified." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Byte ordering Explicit Start time and End time." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Can have arbitrary life times." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Delegation possible by requesting proxy able tickets." xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-realm authentication hierarchy No Double encryption of the ticket Explicit integrity mechanism detects block interchange Subsession keys for long sessions" xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Password attack made difficult by a pre-authentication mechanism" xmpDM:startTime="4383867" xmpDM:duration="1000"/></rdf:li></rdf:Seq>
                     </xmpDM:markers>
                  </rdf:Description>
               </rdf:li>
               <rdf:li>
                  <rdf:Description xmpDM:trackType="TableOfContents" xmpDM:frameRate="f1000" xmpDM:trackName="Table of Contents">
                     <xmpDM:markers>
                        <rdf:Seq>
                           <rdf:li><rdf:Description xmpDM:name="Overview" xmpDM:startTime="7933" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="0" tscDM:imageoffset="0" tscDM:imagerect="0, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="User Authentication " xmpDM:startTime="35767" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="1" tscDM:imageoffset="0" tscDM:imagerect="75, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview" xmpDM:startTime="36267" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="2" tscDM:imageoffset="0" tscDM:imagerect="150, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="User Authentication " xmpDM:startTime="36700" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="3" tscDM:imageoffset="0" tscDM:imagerect="225, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Replay Attacks" xmpDM:startTime="215900" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="4" tscDM:imageoffset="0" tscDM:imagerect="300, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Needham Schroeder Protocol" xmpDM:startTime="378000" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="5" tscDM:imageoffset="0" tscDM:imagerect="375, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Denning’s Modification" xmpDM:startTime="533133" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="6" tscDM:imageoffset="0" tscDM:imagerect="450, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Needham Schroeder Protocol" xmpDM:startTime="572833" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="7" tscDM:imageoffset="0" tscDM:imagerect="525, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Denning’s Modification" xmpDM:startTime="599067" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="8" tscDM:imageoffset="0" tscDM:imagerect="600, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Corrected Protocol" xmpDM:startTime="625600" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="9" tscDM:imageoffset="0" tscDM:imagerect="675, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="One-Way Authentication for Email" xmpDM:startTime="899867" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="10" tscDM:imageoffset="0" tscDM:imagerect="750, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview of Kerberos" xmpDM:startTime="1076967" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="11" tscDM:imageoffset="0" tscDM:imagerect="825, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview (Cont)" xmpDM:startTime="1210067" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="12" tscDM:imageoffset="0" tscDM:imagerect="900, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="1300733" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="13" tscDM:imageoffset="0" tscDM:imagerect="975, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="1841900" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="14" tscDM:imageoffset="0" tscDM:imagerect="1050, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="1861533" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="15" tscDM:imageoffset="0" tscDM:imagerect="1125, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="1865567" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="16" tscDM:imageoffset="0" tscDM:imagerect="1200, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="1888300" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="17" tscDM:imageoffset="0" tscDM:imagerect="1275, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="1945267" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="18" tscDM:imageoffset="0" tscDM:imagerect="1350, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="1957167" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="19" tscDM:imageoffset="0" tscDM:imagerect="1425, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="1966033" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="20" tscDM:imageoffset="0" tscDM:imagerect="1500, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="1995067" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="21" tscDM:imageoffset="0" tscDM:imagerect="1575, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2013667" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="22" tscDM:imageoffset="0" tscDM:imagerect="1650, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2051167" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="23" tscDM:imageoffset="0" tscDM:imagerect="1725, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2060633" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="24" tscDM:imageoffset="0" tscDM:imagerect="1800, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2087100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="25" tscDM:imageoffset="0" tscDM:imagerect="1875, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview (Cont)" xmpDM:startTime="2089400" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="26" tscDM:imageoffset="0" tscDM:imagerect="1950, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2090267" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="27" tscDM:imageoffset="0" tscDM:imagerect="2025, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview (Cont)" xmpDM:startTime="2128100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="28" tscDM:imageoffset="0" tscDM:imagerect="2100, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2128933" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="29" tscDM:imageoffset="0" tscDM:imagerect="2175, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2129600" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="30" tscDM:imageoffset="0" tscDM:imagerect="2250, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont)" xmpDM:startTime="2133100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="31" tscDM:imageoffset="0" tscDM:imagerect="2325, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2133767" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="32" tscDM:imageoffset="0" tscDM:imagerect="2400, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2134933" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="33" tscDM:imageoffset="0" tscDM:imagerect="2475, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2137633" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="34" tscDM:imageoffset="0" tscDM:imagerect="2550, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2142367" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="35" tscDM:imageoffset="0" tscDM:imagerect="2625, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2143933" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="36" tscDM:imageoffset="0" tscDM:imagerect="2700, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2146100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="37" tscDM:imageoffset="0" tscDM:imagerect="2775, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2150000" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="38" tscDM:imageoffset="0" tscDM:imagerect="2850, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2158933" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="39" tscDM:imageoffset="0" tscDM:imagerect="2925, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2159567" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="40" tscDM:imageoffset="0" tscDM:imagerect="3000, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2182633" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="41" tscDM:imageoffset="0" tscDM:imagerect="3075, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2193533" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="42" tscDM:imageoffset="0" tscDM:imagerect="3150, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2241767" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="43" tscDM:imageoffset="0" tscDM:imagerect="3225, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2242900" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="44" tscDM:imageoffset="0" tscDM:imagerect="3300, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2244700" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="45" tscDM:imageoffset="0" tscDM:imagerect="3375, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2419733" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="46" tscDM:imageoffset="0" tscDM:imagerect="3450, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont)" xmpDM:startTime="2446800" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="47" tscDM:imageoffset="0" tscDM:imagerect="3525, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2458733" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="48" tscDM:imageoffset="0" tscDM:imagerect="3600, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2459367" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="49" tscDM:imageoffset="0" tscDM:imagerect="3675, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2509867" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="50" tscDM:imageoffset="0" tscDM:imagerect="3750, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont)" xmpDM:startTime="2510767" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="51" tscDM:imageoffset="0" tscDM:imagerect="3825, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2519600" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="52" tscDM:imageoffset="0" tscDM:imagerect="3900, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2520100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="53" tscDM:imageoffset="0" tscDM:imagerect="3975, 0, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Overview (Cont)" xmpDM:startTime="2520233" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="54" tscDM:imageoffset="0" tscDM:imagerect="50, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2520767" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="55" tscDM:imageoffset="0" tscDM:imagerect="125, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2545433" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="56" tscDM:imageoffset="0" tscDM:imagerect="200, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2548033" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="57" tscDM:imageoffset="0" tscDM:imagerect="275, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2548500" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="58" tscDM:imageoffset="0" tscDM:imagerect="350, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont)" xmpDM:startTime="2548600" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="59" tscDM:imageoffset="0" tscDM:imagerect="425, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Key Design Principles" xmpDM:startTime="2588400" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="60" tscDM:imageoffset="0" tscDM:imagerect="500, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont)" xmpDM:startTime="2609267" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="61" tscDM:imageoffset="0" tscDM:imagerect="575, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2609667" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="62" tscDM:imageoffset="0" tscDM:imagerect="650, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2642667" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="63" tscDM:imageoffset="0" tscDM:imagerect="725, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2643667" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="64" tscDM:imageoffset="0" tscDM:imagerect="800, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2644567" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="65" tscDM:imageoffset="0" tscDM:imagerect="875, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2648900" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="66" tscDM:imageoffset="0" tscDM:imagerect="950, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2654667" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="67" tscDM:imageoffset="0" tscDM:imagerect="1025, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2658100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="68" tscDM:imageoffset="0" tscDM:imagerect="1100, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2658900" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="69" tscDM:imageoffset="0" tscDM:imagerect="1175, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2660533" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="70" tscDM:imageoffset="0" tscDM:imagerect="1250, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2661267" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="71" tscDM:imageoffset="0" tscDM:imagerect="1325, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2662233" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="72" tscDM:imageoffset="0" tscDM:imagerect="1400, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Message Exchange" xmpDM:startTime="2663200" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="73" tscDM:imageoffset="0" tscDM:imagerect="1475, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Concepts" xmpDM:startTime="2665967" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="74" tscDM:imageoffset="0" tscDM:imagerect="1550, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Concepts (Cont)" xmpDM:startTime="2667133" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="75" tscDM:imageoffset="0" tscDM:imagerect="1625, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Key Design Principles" xmpDM:startTime="2675200" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="76" tscDM:imageoffset="0" tscDM:imagerect="1700, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-Realm Authentication" xmpDM:startTime="2873800" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="77" tscDM:imageoffset="0" tscDM:imagerect="1775, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Key Design Principles" xmpDM:startTime="2875100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="78" tscDM:imageoffset="0" tscDM:imagerect="1850, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-Realm Authentication" xmpDM:startTime="2877067" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="79" tscDM:imageoffset="0" tscDM:imagerect="1925, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Privacy and Integrity" xmpDM:startTime="3026367" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="80" tscDM:imageoffset="0" tscDM:imagerect="2000, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-Realm Authentication" xmpDM:startTime="3026867" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="81" tscDM:imageoffset="0" tscDM:imagerect="2075, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Privacy and Integrity" xmpDM:startTime="3076367" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="82" tscDM:imageoffset="0" tscDM:imagerect="2150, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Inter-Realm Authentication" xmpDM:startTime="3077633" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="83" tscDM:imageoffset="0" tscDM:imagerect="2225, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Privacy and Integrity" xmpDM:startTime="3253167" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="84" tscDM:imageoffset="0" tscDM:imagerect="2300, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Issues" xmpDM:startTime="3442000" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="85" tscDM:imageoffset="0" tscDM:imagerect="2375, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="3803000" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="86" tscDM:imageoffset="0" tscDM:imagerect="2450, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="3915633" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="87" tscDM:imageoffset="0" tscDM:imagerect="2525, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="3989467" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="88" tscDM:imageoffset="0" tscDM:imagerect="2600, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4006033" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="89" tscDM:imageoffset="0" tscDM:imagerect="2675, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4018800" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="90" tscDM:imageoffset="0" tscDM:imagerect="2750, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4060367" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="91" tscDM:imageoffset="0" tscDM:imagerect="2825, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4081100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="92" tscDM:imageoffset="0" tscDM:imagerect="2900, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4081667" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="93" tscDM:imageoffset="0" tscDM:imagerect="2975, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4084567" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="94" tscDM:imageoffset="0" tscDM:imagerect="3050, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4085233" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="95" tscDM:imageoffset="0" tscDM:imagerect="3125, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4086200" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="96" tscDM:imageoffset="0" tscDM:imagerect="3200, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4086600" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="97" tscDM:imageoffset="0" tscDM:imagerect="3275, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4262600" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="98" tscDM:imageoffset="0" tscDM:imagerect="3350, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4262933" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="99" tscDM:imageoffset="0" tscDM:imagerect="3425, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4263100" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="100" tscDM:imageoffset="0" tscDM:imagerect="3500, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4263700" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="101" tscDM:imageoffset="0" tscDM:imagerect="3575, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4273033" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="102" tscDM:imageoffset="0" tscDM:imagerect="3650, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4273967" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="103" tscDM:imageoffset="0" tscDM:imagerect="3725, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4290233" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="104" tscDM:imageoffset="0" tscDM:imagerect="3800, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4290433" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="105" tscDM:imageoffset="0" tscDM:imagerect="3875, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4290900" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="106" tscDM:imageoffset="0" tscDM:imagerect="3950, 56, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4295300" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="107" tscDM:imageoffset="0" tscDM:imagerect="25, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4295900" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="108" tscDM:imageoffset="0" tscDM:imagerect="100, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4297367" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="109" tscDM:imageoffset="0" tscDM:imagerect="175, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4298333" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="110" tscDM:imageoffset="0" tscDM:imagerect="250, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4299133" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="111" tscDM:imageoffset="0" tscDM:imagerect="325, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4299700" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="112" tscDM:imageoffset="0" tscDM:imagerect="400, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4299867" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="113" tscDM:imageoffset="0" tscDM:imagerect="475, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4300267" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="114" tscDM:imageoffset="0" tscDM:imagerect="550, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4301267" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="115" tscDM:imageoffset="0" tscDM:imagerect="625, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4301633" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="116" tscDM:imageoffset="0" tscDM:imagerect="700, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4302000" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="117" tscDM:imageoffset="0" tscDM:imagerect="775, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V5" xmpDM:startTime="4317933" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="118" tscDM:imageoffset="0" tscDM:imagerect="850, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4319367" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="119" tscDM:imageoffset="0" tscDM:imagerect="925, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V5" xmpDM:startTime="4323667" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="120" tscDM:imageoffset="0" tscDM:imagerect="1000, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4335167" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="121" tscDM:imageoffset="0" tscDM:imagerect="1075, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4335267" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="122" tscDM:imageoffset="0" tscDM:imagerect="1150, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4335600" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="123" tscDM:imageoffset="0" tscDM:imagerect="1225, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4336200" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="124" tscDM:imageoffset="0" tscDM:imagerect="1300, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V4 Issues" xmpDM:startTime="4336833" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="125" tscDM:imageoffset="0" tscDM:imagerect="1375, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1" xmpDM:startTime="4341300" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="126" tscDM:imageoffset="0" tscDM:imagerect="1450, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="ASN.1 Example" xmpDM:startTime="4341900" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="127" tscDM:imageoffset="0" tscDM:imagerect="1525, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Encoding Rules" xmpDM:startTime="4342300" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="128" tscDM:imageoffset="0" tscDM:imagerect="1600, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4342733" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="129" tscDM:imageoffset="0" tscDM:imagerect="1675, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V5" xmpDM:startTime="4343167" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="130" tscDM:imageoffset="0" tscDM:imagerect="1750, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="BER Example" xmpDM:startTime="4377800" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="131" tscDM:imageoffset="0" tscDM:imagerect="1825, 112, 75, 56"/></rdf:li><rdf:li><rdf:Description xmpDM:name="Kerberos V5" xmpDM:startTime="4383867" tscDM:image="l_15uap1_Thumbnails.png" tscDM:imageindex="132" tscDM:imageoffset="0" tscDM:imagerect="1900, 112, 75, 56"/></rdf:li></rdf:Seq>
                     </xmpDM:markers>
                  </rdf:Description>
               </rdf:li>
            </rdf:Bag>
         </xmpDM:Tracks>
         <tscDM:controller>
            <rdf:Description xmpDM:name="tscplayer">
               <tscDM:parameters>
                  <rdf:Bag>
                     <rdf:li xmpDM:name="autohide" xmpDM:value="false"/><rdf:li xmpDM:name="autoplay" xmpDM:value="true"/><rdf:li xmpDM:name="loop" xmpDM:value="false"/><rdf:li xmpDM:name="searchable" xmpDM:value="true"/><rdf:li xmpDM:name="captionsenabled" xmpDM:value="false"/><rdf:li xmpDM:name="sidebarenabled" xmpDM:value="false"/><rdf:li xmpDM:name="unicodeenabled" xmpDM:value="false"/><rdf:li xmpDM:name="backgroundcolor" xmpDM:value="000000"/><rdf:li xmpDM:name="sidebarlocation" xmpDM:value="left"/><rdf:li xmpDM:name="endaction" xmpDM:value="stop"/><rdf:li xmpDM:name="endactionparam" xmpDM:value="true"/><rdf:li xmpDM:name="locale" xmpDM:value="en-US"/></rdf:Bag>
               </tscDM:parameters>
               <tscDM:controllerText>
                  <rdf:Bag>
                  </rdf:Bag>
               </tscDM:controllerText>
            </rdf:Description>
         </tscDM:controller>
         <tscDM:contentList>
            <rdf:Description>
               <tscDM:files>
                  <rdf:Seq>
                     <rdf:li xmpDM:name="0" xmpDM:value="l_15uap1.mp4"/><rdf:li xmpDM:name="1" xmpDM:value="l_15uap1_First_Frame.png"/><rdf:li xmpDM:name="2" xmpDM:value="l_15uap1_Thumbnails.png"/></rdf:Seq>
               </tscDM:files>
            </rdf:Description>
         </tscDM:contentList>
      </rdf:Description>
   </rdf:RDF>
</x:xmpmeta>