53 lines
985 B
Plaintext
53 lines
985 B
Plaintext
/*
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* Modeled from ISO/IEC 9798
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* Modeler: Cas Cremers, Dec. 2010
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*
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* ccf
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* mutual
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* three-pass
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*
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* Unidirectional key version.
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*
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* Modeling notes:
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*
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* - The keyed CCF (f_kab(x)) is modeled as f(x,kab)
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*/
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hashfunction f;
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protocol isoiec-9798-4-4-udkey(A,B)
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{
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role A
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{
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fresh Ra: Nonce;
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var Rb: Nonce;
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var Text1,Text4,Text5: Ticket;
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fresh Text2,Text3: Ticket;
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recv_1(B,A, Rb, Text1 );
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claim(A,Running,B,Ra,Rb,Text2);
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send_2(A,B, Ra, Text3, f(Ra,Rb,Text2, k(A,B) ) );
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recv_3(B,A, Text5, f(Rb,Ra,Text4, k(B,A) ) );
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claim(A,Commit,B,Ra,Rb,Text2,Text4);
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claim(A,Alive);
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claim(A,Weakagree);
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}
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role B
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{
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var Ra: Nonce;
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fresh Rb: Nonce;
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fresh Text1,Text4,Text5: Ticket;
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var Text2,Text3: Ticket;
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send_1(B,A, Rb, Text1 );
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recv_2(A,B, Ra, Text3, f(Ra,Rb,Text2, k(A,B) ) );
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claim(B,Running,A,Ra,Rb,Text2,Text4);
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send_3(B,A, Text5, f(Rb,Ra,Text4, k(B,A) ) );
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claim(B,Commit,A,Ra,Rb,Text2);
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claim(B,Alive);
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claim(B,Weakagree);
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}
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}
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