采用与传统加密传真通信不同的点对点传输方法, 根据传真通信协议的特点, 针对商密的特殊要求, 对T 30 通信协

议进行改造, 研究出一种无中心密钥分配新方法. 介绍了通过改造T 30 通信协议, 把对称、非对称密码算法结合到T30 协议

中 用自定义非标帧进行身份鉴别和起点密钥分发 在C 进程采用附加密码算法解决页工作密钥同步等问题.-Different point-to-point transmission method with the conventional encryption facsimile communication, in accordance with the characteristics of the facsimile communication protocol, for the special requirements of business secret, T 30 communication protocol transformation, have developed a new method of the central key distribution. Introduced transformation T 30 communication protocols, symmetric and asymmetric cryptographic algorithm to the T30 protocol　custom non-standard frame authentication and the starting point for key distribution　additional cryptographic algorithms to solve page working key in the C process synchronization and other issues .