| 摘要 |
<p>The present invention discloses a method for securely negotiating a session key and includes: after an access gateway registered to a softswitch successfully, both the access gateway and the softswitch obtaining a shared key separately and storing the shared key in itself separately; before the registered access gateway implements each session, the softswitch distributing a session key for the session according to the request of the access gateway and encrypting the session key distributed every time with the shared key, and then transferring the encrypted session key to the access gateway; the access gateway decrypting the encrypted session key with the shared key and obtaining the session key every time when it receives the encrypted session key. The present invention also discloses an apparatus for securely negotiating a session key. The present invention can further assure the safety of the voice communication at the same time with assuring the safety of the session key, and is easy to be implemented.</p> |
