| 摘要 |
PROBLEM TO BE SOLVED: To automate security analysis of a communication method. SOLUTION: A user device disturbs information to be transmitted, by a random number component and then transmits the information to a manager device; the manager device signs the disturbed information, by adding a blind signature of the manager device to generate manager second signed disturbed information; the user device decides whether an attacker device intervening between the user device and the manager device has made an attack, on the basis of the signature of the manager device in the manager second signed disturbed information and obtains the signature of the manager device, to the information, by eliminating an influence of the random number component of manager first signed disturbed information, when it is determined that the attacker device has not made an attack; when it is determined that the attacker device has made an attack, stops processing and transmits the information and signature of the manager device to this information to a verifier device; and the verifying device verifies whether the signature of the manager device has been given by the manager device and discards information, when that it has not been given by the manager device is verified. COPYRIGHT: (C)2009,JPO&INPIT
|
