Program key exchange devices, key exchange processing system, and key exchange method

摘要

An arithmetic control section 260 and storage 250, the key exchange apparatus of the present invention is performed as follows: the key exchange process with the other external devices via a network. Start instruction random, secret key, public key self, partner public key, and the initial session number is entered, to generate a hash value of the first session and the first number, the arithmetic control unit 260, the first session When transmitted to the remote device initiator message containing the hash value and the first number, to receive the initiator message from the other unit, the first hash value and second hash value that is generated if the match , and stored as a key by generating a hash value of the third by using the information on the session number of the second added to the session number of the first responder session number generated hash and the third session number of the second When transmitted to the remote device by generating a responder message containing the value, to receive a responder message from the other unit, the hash value of the third and fourth hash value that is generated if a match is found, the fifth In the storage section 250 as a key to generate a hash value.