在保密通信协议中,通信双方大多可直接执行协议,第三方主要扮演仲裁、裁决、密钥托管的角色。经第三方的保密通信协议是在双方无法直接执行的情况下,必需借助第三方完成的协议,该协议在交互支持协议等方面有广泛的应用前景。 In the confidential communication protocol, most of the parties in communication can directly implement the agreement, and the third party mainly plays the role of arbitration, ruling and key escrow. The third-party secure communication protocol is an agreement that must be completed by a third party under the circumstances that both parties can not directly enforce the agreement. The agreement has broad application prospects in terms of interactive support agreements and the like.