68 lines
1.2 KiB
Plaintext
68 lines
1.2 KiB
Plaintext
|
/*
|
||
|
|
* Modeled from ISO/IEC 9798
|
||
|
|
* Modeler: Cas Cremers, Dec. 2010
|
||
|
|
*
|
||
|
|
* symmetric
|
||
|
|
* two-pass
|
||
|
|
* mutual
|
||
|
|
*
|
||
|
|
* Note: the identity inside the encryption may be ommitted, if
|
||
|
|
* (a) the environment disallows such attacks, or
|
||
|
|
* (b) a unidirectional key is used
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
protocol @keysymm-23(A,B)
|
||
|
|
{
|
||
|
|
role A
|
||
|
|
{
|
||
|
|
var T: Nonce;
|
||
|
|
var Text: Ticket;
|
||
|
|
|
||
|
|
recv_!1(B,A, { T, A, Text }k(A,B) );
|
||
|
|
send_!2(A,B, { T, A, Text }k(B,A) );
|
||
|
|
}
|
||
|
|
role B
|
||
|
|
{
|
||
|
|
var T: Nonce;
|
||
|
|
var Text: Ticket;
|
||
|
|
|
||
|
|
recv_!3(A,B, { T, B, Text }k(A,B) );
|
||
|
|
send_!4(B,A, { T, B, Text }k(B,A) );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
protocol isoiec-9798-2-3(A,B)
|
||
|
|
{
|
||
|
|
role A
|
||
|
|
{
|
||
|
|
fresh TNA: Nonce;
|
||
|
|
var TNB: Nonce;
|
||
|
|
fresh Text1,Text2: Ticket;
|
||
|
|
var Text3,Text4: Ticket;
|
||
|
|
|
||
|
|
claim(A,Running,B,TNA,Text1);
|
||
|
|
send_1(A,B, Text2, { TNA, B, Text1 }k(A,B) );
|
||
|
|
recv_2(B,A, Text4, { TNB, A, Text3 }k(A,B) );
|
||
|
|
|
||
|
|
claim(A,Commit,B,TNB,Text3);
|
||
|
|
claim(A,Alive);
|
||
|
|
claim(A,Weakagree);
|
||
|
|
}
|
||
|
|
role B
|
||
|
|
{
|
||
|
|
var TNA: Nonce;
|
||
|
|
fresh TNB: Nonce;
|
||
|
|
var Text1,Text2: Ticket;
|
||
|
|
fresh Text3,Text4: Ticket;
|
||
|
|
|
||
|
|
recv_1(A,B, Text2, { TNA, B, Text1 }k(A,B) );
|
||
|
|
claim(B,Running,A,TNB,Text3);
|
||
|
|
send_2(B,A, Text4, { TNB, A, Text3 }k(A,B) );
|
||
|
|
|
||
|
|
claim(B,Commit,A,TNA,Text1);
|
||
|
|
claim(B,Alive);
|
||
|
|
claim(B,Weakagree);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|