S/MIME digital signature mail tamper-proofing authentication and signature information analysis method

The invention discloses a tamper-proof authentication and signature information analysis method for an S/MIME digital signature mail. The tamper-proof authentication and signature information analysis method comprises the steps that S1, a user sends the S/MIME digital signature mail through a client or the user receives the S/MIME digital signature mail; s2, the post office ma obtains a physical mail of the S/MIME digital signature mail; and S3, performing authentication through the physical mail of the S/MIME digital signature mail, and judging whether the S/MIME digital signature mail is tampered or not. According to the tamper-proof authentication and signature information analysis method for the S/MIME digital signature mail, the authentication result of the signed mail and the S/MIME digital signature certificate information can be displayed at the webpage end. 本发明公开了一种S/MIME数字签名邮件防篡改认证及签名信息解析方法，所述防篡改认证及签名信息解析方法包括：S1：用户通过客户端发送S/MIME数字签名邮件或用户收到S/MIME数字签名邮件；S2：邮局ma获取S/MIME数字签名邮件的物理邮件；S3：通过S/MIME数字签名邮件的物理邮件