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.
95 lines
1.4 KiB
Plaintext
95 lines
1.4 KiB
Plaintext
# 1 "oakley-alt.cpp"
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# 1 "<command-line>"
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# 1 "oakley-alt.cpp"
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# 18 "oakley-alt.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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# 97 "common.h"
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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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# 141 "common.h"
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var Ci, Cr: Nonce;
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# 150 "common.h"
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recv_!SWAP1( SWAP, SWAP, KDF(Ni, Nr, h(g(r),i), Ci, Cr) );
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send_!SWAP2( SWAP, SWAP, KDF(Ni, Nr, h(g(i),r), Ci, Cr) );
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}
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}
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# 19 "oakley-alt.cpp" 2
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usertype String;
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const list, algo: String;
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protocol oakley-alt(I, R)
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{
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role I {
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fresh i, Ni, Ci: Nonce;
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var Nr, Cr: Nonce;
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var Gr: Ticket;
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send_1( I, R, Ci, g(i), list, pk(R), {I, R, Ni}pk(R) );
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recv_2( R, I, Cr, Ci, Gr, algo, {R, I, Nr}pk(I), prf(prf(Ni,Nr), R, I, Gr, g(i), algo) );
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send_3( I, R, Ci, Cr, prf(prf(Ni,Nr), I, R, g(i), Gr, algo) );
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claim( I, SKR, KDF(Ni, Nr, h(Gr,i), Ci, Cr) );
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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, Nr, Cr: Nonce;
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var Ni, Ci: Nonce;
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var Gi: Ticket;
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recv_1( I, R, Ci, Gi, list, pk(R), {I, R, Ni}pk(R) );
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send_2( R, I, Cr, Ci, g(r), algo, {R, I, Nr}pk(I), prf(prf(Ni,Nr), R, I, g(r), Gi, algo) );
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recv_3( I, R, Ci, Cr, prf(prf(Ni,Nr), I, R, Gi, g(r), algo) );
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claim( R, SKR, KDF(Ni, Nr, h(Gi,r), Ci, Cr) );
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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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