f9a34f4de5
After the new function implementation, the 'Function' type is no longer one-way by default. However, many protocol description files relied on this implicit assumption. The solution is to use 'hashfunction' declarations instead to model one-wayness. Original bug report by Binh Thanh Nguyen.
113 lines
1.3 KiB
Plaintext
113 lines
1.3 KiB
Plaintext
# 1 "sts-mac.cpp"
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# 1 "<command-line>"
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# 1 "sts-mac.cpp"
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# 16 "sts-mac.cpp"
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# 1 "common.h" 1
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hashfunction prf, KDF;
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hashfunction g, h;
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# 94 "common.h"
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hashfunction MAC;
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protocol @oracle (DH, SWAP) {
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role DH {
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var i, r: Nonce;
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recv_!DH1( DH, DH, h(g(r),i) );
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send_!DH2( DH, DH, h(g(i),r) );
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}
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role SWAP {
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var i, r, Ni, Nr: Nonce;
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# 150 "common.h"
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recv_!SWAP1( SWAP, SWAP, KDF(h(g(r),i)) );
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send_!SWAP2( SWAP, SWAP, KDF(h(g(i),r)) );
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}
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}
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# 17 "sts-mac.cpp" 2
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protocol @executability(O) {
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role O {
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var i, r: Nonce;
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recv_!O1( O, O, MAC(h(g(i),r), g(r), g(i)) );
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send_!O2( O, O, MAC(h(g(r),i), g(r), g(i)) );
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recv_!O3( O, O, MAC(h(g(r),i), g(i), g(r)) );
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send_!O4( O, O, MAC(h(g(i),r), g(i), g(r)) );
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}
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}
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protocol sts-mac(I, R)
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{
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role I {
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fresh i: Nonce;
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var Gr: Ticket;
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send_1( I, R, g(i) );
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recv_!2( R, I, Gr, {Gr, g(i)}sk(R), MAC(h(Gr,i), Gr, g(i)) );
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send_!3( I, R, {g(i), Gr}sk(I), MAC(h(Gr,i), g(i), Gr) );
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claim( I, SKR, KDF(h(Gr,i)) );
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claim( I, Alive );
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claim( I, Weakagree );
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}
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role R {
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fresh r: Nonce;
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var Gi: Ticket;
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recv_1( I, R, Gi );
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send_!2( R, I, Gi, {g(r), Gi}sk(R), MAC(h(Gi,r), g(r), Gi) );
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recv_!3( I, R, {Gi, g(r)}sk(I), MAC(h(Gi,r), Gi, g(r)) );
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claim( R, SKR, KDF(h(Gi,r)) );
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claim( R, Alive );
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claim( R, Weakagree );
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}
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}
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