本文件从法律、行政和技术方面定义了关于可信通信的要求。本文档展示了一种TCP系统架构，通过提供可信通信证据作为证据来保证可信通信并促进可信服务。 本文档从OSI（开放系统互连）参考模型的第7层应用层的角度重点介绍TCP。 受众是IT创新的决策者，如非物质化、电子活动方面的法律专家、单一窗口和安全交易的IT规划者、与分布式网络和账本相关的IT服务提供商、可信系统审计员、可信通信相关方等。

This document defines the requirements about trusted communication in legal, administrative and technical considerations. This document shows a TCP system architecture to guarantee trusted communication and promote trusted services by providing trusted communication evidence as the proof. This document focuses on TCP at the view of 7^th application layer of OSI (Open Systems Interconnection) Reference Model. The audiences are the policy makers for IT innovation such as dematerialization, legal experts regarding electronic activities, IT planners for single windows and secure transactions, IT service providers related to distributed networking and ledger, trusted system auditors, trusted communication concerned parties and so on.