摘要: “(1)应用层安全(Security at the Application Layer):邮件系统安全(Electronic Mail Security)电子邮件安全要素(Email security issues)PGP协议(PGP-Pretty Good Priv... 阅读全文
posted @ 2016-06-11 15:43 Victor_Lv 阅读(974) 评论(0) 推荐(0) 编辑