67 lines
1.4 KiB
Plaintext
67 lines
1.4 KiB
Plaintext
/*
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* Modeled from ISO standard
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*
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* signature
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* ttp
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* five-pass
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* mutual
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*
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* B initiates and A communicates with T
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*
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* parameters:
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*
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* NAME
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* IA
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* IB
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* ResA
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* ResB
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* TokenAB
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* TokenBA (although identical in both cases)
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* TokenTA
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*
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*/
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protocol isoiec-9798-3-7-1(A,B,T)
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{
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role A
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{
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fresh Ra,Rpa: Nonce;
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var Rb: Nonce;
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var Text1,Text3,Text4,Text5,Text8,Text9: Ticket;
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fresh Text2,Text6,Text7: Ticket;
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recv_1(B,A, Rb,B,Text1 );
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send_2(A,T, Rpa,Rb,A,Text2 );
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recv_3(T,A, Text5, A,pk(A),B,pk(B),{Rpa,B,pk(B),Text4}sk(T),{Rb,A,pk(A),Text3}sk(T) );
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claim(A,Running,B,Ra,Rb,Text6);
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send_4(A,B, A, Text7,Ra,A,pk(A),{Rb,A,pk(A),Text3}sk(T),{Rb,Ra,B,A,Text6}sk(A) );
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recv_5(B,A, Ra,Rb,Text9,{A,Ra,Rb,B,Text8}sk(B) );
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claim(A,Commit,B,Ra,Rb,Text8);
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claim(A,Alive);
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}
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role B
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{
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fresh Text1,Text8,Text9: Ticket;
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fresh Rb: Nonce;
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var Text3,Text4,Text6,Text7: Ticket;
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var Ra,Rpa: Nonce;
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send_1(B,A, Rb,B,Text1 );
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recv_4(A,B, A, Text7,Ra,A,pk(A),{Rb,A,pk(A),Text3}sk(T),{Rb,Ra,B,A,Text6}sk(A) );
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claim(B,Running,A,Ra,Rb,Text8);
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send_5(B,A, Ra,Rb,Text9,{A,Ra,Rb,B,Text8}sk(B) );
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claim(B,Commit,A,Ra,Rb,Text6);
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claim(B,Alive);
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}
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role T
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{
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var Rpa,Rb: Nonce;
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var Text2: Ticket;
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fresh Text3,Text4,Text5: Ticket;
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recv_2(A,T, Rpa,Rb,A,Text2 );
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send_3(T,A, Text5, A,pk(A),B,pk(B),{Rpa,B,pk(B),Text4}sk(T),{Rb,A,pk(A),Text3}sk(T) );
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}
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}
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