| 摘要 |
A protocol for secure peer-to-peer communications is established based on existing cryptographic techniques and encryption algorithms. The peers ( 120, 130, 140 ) and a central security agent ( 110 ) undergo mutual authentication. A newly generated nonce is used for authentication, and a random session key is used for a session. The security agent ( 110 ) generates unique session keys for communication between peers ( 120, 130, 140 ). The security agent ( 110 ) removes the burden of mutual authentication between requested peer ( 130, 140 ) and the requesting peer ( 120 ), as the security agent ( 110 ) independently authenticates the requesting peer ( 120 ) and the requested peer ( 130, 140 ). The requested peer ( 130, 140 ) and the requesting peer ( 120 ) are sent a session key by the security agent ( 110 ).
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