Abstract:

 The secure problems of E-cheque used in electronic commerce payment were studied. Based on the analysis of the developing circumstance and the security gap of it, a security guarantee system combining watermarking and digital signature were proposed. The double entity authentication and watermarking content authentication made it impossible to gain illegal access to E-cheque, to edit or to forge it. According to the analysis, the security, creditability and authenticity of the E-cheque can be achieved by the system.

Key words: E-cheque, digital watermarking, digital signature, semi-fragile watermarking

摘要：

探讨了当前电子商务支付中电子支票的安全问题,分析了其发展的形势及存在的安全缺陷,提出了一种结合数字水印和数字签名的安全保障机制。该机制采用了双重身份认证方案和水印内容认证方案,使得非法接触以及修改电子支票,伪造其内容都是不可能的。分析表明,该方案使得电子支票具有认证精度高、可信度高、安全性强等特点。

关键词: 电子支票, 数字水印, 数字签名, 半易碎水印