E-mail encryption transmitting-receiving system

Abstract

An E-mail encryption / reception / transmission system is provided, which comprises an encryption transmitter, a decryption receiver and a key packet. The system is characterized in that the encryption transmitter and the decryption receiver are equipped with Liao's chaos generators which produce required chaotic sequence data. An encryption controller calculates and encrypts E-mail information by using the chaotic sequence data to produce encrypted data, and sends an encrypted E-mail. The decryption receiver calculates and decrypts the E-mail information by using the chaotic sequence data to produce a primary file. The invention has the advantages that the Liao's chaos generators are excellent in the data encryption; the system is simple, rapid and safe to operate, and the E-mail can be encrypted, decrypted and transmitted safely and quickly.

Description

technical field [0001] The invention belongs to an encryption / decryption system for electronic files, in particular to an email encryption sending and receiving system. Background technique [0002] SMTP and POP3 protocols are standards for sending and receiving e-mail on the Internet. Since these two standards do not require encryption of e-mail content, and e-mail content often involves privacy and important data, it is urgent for e-mail users to encrypt e-mail. Require. [0003] Since 2005, there have been many patented technologies on email encryption in my country. For example, "Achieving Method for Ensuring E-mail Security" (Patent Application No. 200510137623) proposes a method for generating mail encryption keys through multiple steps; "A Simple, Reliable E-mail (EMail) Security Solution Scheme" (Patent Application No. 200510130206) proposes a mail encryption key management scheme based on public key system; For the encryption method of the image in the mail; "E-m...

AI Technical Summary

Problems solved by technology

But the disadvantages of these technologies are: they mainly focus on the peripheral technologies of email encryption, such as identity authentication and key management, but there is no detailed description of the core technology of email encryption, that is, the encryption algorithm of email itself

From this, it can be guessed that there may be some unsafe factors in the AES algorithm, so that the United States or some other countries can crack this algorithm

Since emails may involve some more confidential information, the AES algorithm is not suitable for encrypting emails

[0007] 2. The AES algorithm is relatively complicated: the 128-bit AES algorithm consists of 10 rounds of encryption, and each round of encryption consists of four encryption operations: Addkey, SubByte, ShiftRow and MixCoulmn, so the implementation is more complicated

Inefficient for encrypted email data, especially large email attachments

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