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- Improved description of protocol as in Corin/Etalle paper.

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This commit is contained in:
ccremers 2006-11-23 18:51:28 +00:00
parent f2f35f5548
commit 96da9e087a
1 changed files with 17 additions and 25 deletions
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42
spdl/misc/bkepk-ce.spdl
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@ -8,23 +8,13 @@
usertype Key; usertype Key;
const pk,hash: Function; const pk,hash: Function;
secret sk: Function; secret sk,unhash: Function;
inversekeys (pk,sk); inversekeys (pk,sk);
inversekeys (hash,unhash);
protocol bkeCE(A,B,testnonce) protocol bkeCE(A,B)
{ {
role B
{
const nb: Nonce;
var na: Nonce;
var kab: Key;
send_1 (B,A, B,{ nb,B }pk(A) );
read_2 (A,B, { hash(nb),na,A,kab }pk(B) );
send_3 (B,A, { hash(na) }kab );
}
role A role A
{ {
var nb: Nonce; var nb: Nonce;
@ -34,14 +24,25 @@ protocol bkeCE(A,B,testnonce)
read_1 (B,A, B,{ nb,B }pk(A) ); read_1 (B,A, B,{ nb,B }pk(A) );
send_2 (A,B, { hash(nb),na,A,kab }pk(B) ); send_2 (A,B, { hash(nb),na,A,kab }pk(B) );
read_3 (B,A, { hash(na) }kab ); read_3 (B,A, { hash(na) }kab );
claim_A1 (A, Secret, na);
claim_A2 (A, Secret, nb);
} }
role testnonce role B
{ {
var n: Nonce; const nb: Nonce;
var na: Nonce;
var kab: Key;
read_4 (testnonce,testnonce, n); send_1 (B,A, B,{ nb,B }pk(A) );
read_2 (A,B, { hash(nb),na,A,kab }pk(B) );
send_3 (B,A, { hash(na) }kab );
claim_B1 (B, Secret, na);
claim_B2 (B, Secret, nb);
} }
} }
const Alice,Bob,Eve; const Alice,Bob,Eve;
@ -50,12 +51,3 @@ compromised sk(Eve);
untrusted Eve; untrusted Eve;
run bkeCE.A(Alice,Bob,Alice);
run bkeCE.A(Alice,Bob,Alice);
run bkeCE.B(Alice,Bob,Alice);
run bkeCE.B(Alice,Bob,Alice);
run bkeCE.testnonce(Alice,Bob,Alice);
run bkeCE.testnonce(Alice,Bob,Alice);
run bkeCE.A(Alice,Bob,Alice);
run bkeCE.testnonce(Alice,Bob,Alice);