Data leakage prevention method and system for realizing non-perception encryption and decryption of e-mail attachment

Abstract

The invention provides a data leakage prevention method and system for realizing non-perception encryption and decryption of email attachment, and the method comprises the steps that an email client transmits an email obtaining request; a redirection module requests the information, carries out the verification, and transmits the information to an email server; the mail server establishes connection with the mail client through the redirection module; the mail server sends a mail and an attachment of the current mail client to the redirection module; the redirection module intercepts and analyzes the email, encrypts the attachment, reassembles the email, and sends the email to the email client; and the mail client decrypts the mail attachment. According to the invention, the mail client isauthenticated through the redirection module, and mail interception, mail analysis, attachment encryption, attachment decryption, mail recombination and other operations are carried out on the mail and the attachment of the mail client passing the authentication, so that the attachment in the sent mail is an encrypted file in a network environment, and the security of the mail attachment is improved.

Description

technical field [0001] The invention belongs to the technical field of data security, and in particular relates to a data leakage prevention method and system for realizing non-perceptual encryption and decryption of email attachments. Background technique [0002] With the rapid development of computer technology, e-mail is more and more used in all aspects of social production, life and study, playing a pivotal role. While enjoying the convenience and speed brought by e-mail, people must also face the e-mail security problems brought about by the openness of the Internet and computer software vulnerabilities, such as: attackers obtain or tamper with e-mails, virus e-mails, spam e-mails, Mail bombs seriously endanger the normal use of e-mail, and even cause serious damage to computers and networks. E-mail attachments are the most important carrier of information transmission in e-mails. Certain attachments are intercepted or tampered with, which will bring unspeakable damag...

AI Technical Summary

Problems solved by technology

In the existing encryption methods, the gateway centralized scanning method and the terminal distributed scanning method are generally adopted. The gateway centralized scanning often requires special equipment, and the configuration requirements are relatively high, which causes a certain burden on the actual customers of the data leakage prevention system, which is not conducive to the The promotion and application of such equipment; the terminal distributed scanning is based on the client's PC terminal. Due to the limitation of the existing technology, it often takes up more resources of the PC terminal when scanning, especially when scanning a large amount of data, causing serious damage to the user's other work. A certain impact, resulting in the possibility that the auxiliary function affects the normal business development

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