本文以电子邮件系统为研究背景,在数字签名技术的基础上,提出了一种基于数字签名技术的安全电子邮件系统的设计方案,并给出了发送电子邮件模块和接收电子邮件模块的详细的设计流程以及基于Java 语言的具体的代码实现。 关键词: 数字签名;电子邮件系统;认证机构;加密 Abstract: Given secure E-mail system as the research background, based on signature technology, this paper puts forward a design scheme of secure E-mail system based on signature technology and gives the detailed design flow and code implement of sending and receiving E-mail’s module. Key words: signature; e-mail system; ca; encrypt