| 摘要 |
PURPOSE: A key control device, a terminal, and a communication apparatus are provided to safely generate a session group key in real time by safely obtaining a session group key. CONSTITUTION: A blind key of a call requester hides a private key of the call requester based on a Diffie-Hellman base key exchange mechanism. The blind key of a call receiver hides the private key of the information transmitted from the call receiver to the call requester in response of the call requester. A session key is generated by exchanging each blind key between the call requester and the call receiver. The blind keys are calculated with respect to the private keys of the call requester and the call receiver. Security terminals of the call requester and the call receiver include a means which searches the same key value as the session key value in real time. |
