51 lines
904 B
Plaintext
51 lines
904 B
Plaintext
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/*
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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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* two-pass
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* mutual
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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-9798-4-3-udkey(A,B)
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{
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role A
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{
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fresh Text1,Text2: Ticket;
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var Text3,Text4: Ticket;
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fresh TNa: Nonce;
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var TNb: Nonce;
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claim(A,Running,B,TNa,Text1);
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send_1(A,B, TNa, Text2, f(TNa,Text1, k(A,B) ) );
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recv_2(B,A, TNb, Text4, f(TNb,Text3, k(B,A) ) );
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claim(A,Commit,B,TNb,Text3);
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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 TNa: Nonce;
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fresh TNb: Nonce;
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var Text1,Text2: Ticket;
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fresh Text3,Text4: Ticket;
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recv_1(A,B, TNa, Text2, f(TNa,Text1, k(A,B) ) );
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claim(B,Running,A,TNb,Text3);
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send_2(B,A, TNb, Text4, f(TNb,Text3, k(B,A) ) );
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claim(B,Commit,A,TNa,Text1);
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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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