how to demonstrate that a protocol is certain with those specifications.
- by kawtousse
Hi every one,
we have 4 persons A, B, C and D witch want to know the averge of their salary SA SB SC SD but no one wants that the others know his salary. For that they use this protocol:
A-B: [N+SA ]KB
B-C:[N+SA+SB]KC
C-D:[N+SA+SB+SC]KD
D-A:[N+SA+SB+SC+SD]KA
where the notation [m]KY represents the message x crypted xith the public key of y
Is this protocol certain. can we trust it.
want you please give me justification.
thanks for help.