50 lines
793 B
Plaintext
50 lines
793 B
Plaintext
/*
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Bilateral Key Exchange with Public Key protocol (BKEPK)
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Variation for exercise 2r890
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*/
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usertype Key;
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const pk,hash: Function;
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secret sk,unhash: Function;
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inversekeys (pk,sk);
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inversekeys (hash,unhash);
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protocol bkevariation(I,R)
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{
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role I
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{
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fresh ni: Nonce;
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var nr: Nonce;
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var kir: Key;
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send_1 (I,R, { ni,I }pk(R) );
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recv_2 (R,I, { hash(ni),nr,kir }pk(I) );
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send_3 (I,R, { hash(nr) }kir );
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claim_4 (I, Secret, kir );
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claim_5 (I, Niagree );
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claim_6 (I, Nisynch );
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}
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role R
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{
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var ni: Nonce;
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fresh nr: Nonce;
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fresh kir: Key;
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recv_1 (I,R, { ni,I }pk(R) );
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send_2 (R,I, { hash(ni),nr,kir }pk(I) );
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recv_3 (I,R, { hash(nr) }kir );
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claim_7 (R, Secret, kir );
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claim_8 (R, Niagree );
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claim_9 (R, Nisynch );
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}
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}
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untrusted e;
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compromised sk(e);
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