Method and apparatus for exchanging with the computer-aided encryption key between the computer unit and the second computer unit in the first

摘要

Is illegal or third parties for this key without can obtain useful information about the identity (U) of the computer unit of the first (57) [Abstract] The present invention is a computer the first unit 1 (U) on methods agreed session key (K) between the computer unit and the second (N) and. This is achieved by embedding in the method having the additional formation of a digital signature over the hash value, the principle of El-Gamal key exchange. Input value of the hash value has a value that uniquely attributable to at least the session key.