This paper analyses the problem of distrust in the handshake of SSL protocol,discusses the principle of trustnegotiation, puts forward an extension of SSL using trust negotiation and the implementation of it.

• 首先分析了安全套接层(SSL)协议在握手阶段的信任不足问题,然后讨论了信任协商机制的原理,提出了采用信任协商机制来扩充SSL协议,并给出了具体的实现方案。