基于证书权威(CA)中心的时间戳服务系统的实现

介绍了数字签名不具有抗抵赖的问题 ,以及数据抗抵赖在信息安全中的重要性。在对原有的时间戳协议缺乏可靠的身份认证和可信性分析后 ,提出了一种新的基于证书权威 (CA)中心的时间戳服务协议。利用CA中心的信任原理和数字证书的身份认证作用 ,使提供时间戳服务的服务方具备了可靠的身份鉴别和可信性。并利用XML标记对时间戳的数据内容进行描述 ,形成简单、直观的时间戳 ,且无需复杂的编解码过程。通过正确和可信的时间戳可以判定用户数据产生的时间 ,防止用户事后的抵赖行为 ,为网络应用提供更为安全的数据。

Realization of Time Stamp Service System Based on Certificate Authority Center

The denying problem of digital signature and the importance of data anti-denying in information security are introduced. After analyzing the old time stamp protocol, which lacks reliable identification and trust, a novel time stamp service protocol based on certificate authority center is presented. By using the trust principle of certificate authority center and the identification function of digital certificate, the server providing time stamp service can be reliably identified and trusted. Using XML without any complex encoding and decoding procedure forms the simple and direct time stamp. The true and trusting time stamp can indicate the producing time of user data, prevent user's denying afterwards, and provide more secure data for network application.