An email encryption method, mail server and system

Abstract

The invention discloses an email encryption method, which includes: acquiring the email information of the email sent by the terminal, the email information including the addressee, title, text and attachment; judging whether the email information contains an encrypted password, judging as If so, encrypt the email according to the email information, the encrypted email includes a header, a template text, an encrypted text, and an encrypted attachment, and the header also includes an encryption identifier corresponding to the email. The invention also discloses a mail server and an electronic mail encryption system. By adopting the invention, the standard format of e-mail is expanded, each e-mail can have an independent encryption password, and the security of e-mail data is greatly improved. Also, since the entire encrypted data is placed in the original text of the e-mail, the e-mail can be downloaded and decrypted individually. In addition, the Rijndael encryption method is used to encrypt emails, effectively ensuring the security of each email entity data.

Description

technical field [0001] The invention relates to the field of communication security, in particular to an email encryption method, server and system. Background technique [0002] Nowadays, with the development and popularization of the network, e-mail has become an important communication tool, and its security has been paid more and more attention. [0003] Emails must contain additional service information in addition to information passed from one user to another. The mail server uses this information to deliver the mail, and the client's mail receiving software uses this information to classify the mail. [0004] At present, the disadvantage of the mail server is that the protection method for mail security is relatively single, and the security of all mails is mainly managed through the login password of the mailbox, and the content of the mail is basically stored in plain text or simply encoded with Base64, etc., and depends on the user A password or other single aut...

AI Technical Summary

Problems solved by technology

[0004] At present, the disadvantage of the mail server is that the protection method for mail security is relatively single, and the security of all mails is mainly managed through the login password of the mailbox, and the content of the mail is basically stored in plain text or simply encoded with Base64, etc., and depends on the user A password or other single authentication method is used to determine whether the user has the right to view the content of the email. If there is a problem with the authentication or the mail server is modified, the data of all the user's emails will be completely exposed, which seriously threatens the security of the user's email

At the same time, once the address of the mail server is disclosed, it is easy to become the target of hackers, which increases the probability of server data being stolen

For example, when the user selects the remember password function of the browser, as long as the user's computer password is stolen, the user can freely log in to the user's mailbox, and the security of the email in the user's mailbox cannot be guaranteed.

[0005] According to conventional thinking, the mail server often adopts the method of accessing all the data of the user in the system once the authentication is passed, but many users lack sufficient awareness of security protection, the password set is too simple, and often the mailbox password is stolen situation, resulting in email data can also be easily stolen

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