E-mail data security protection method based on hybrid encryption

Abstract

The invention relates to an e-mail data security protection method based on hybrid encryption. An existing data encryption method is relatively low in confidentiality or more in memory resources. Thepresent invention includes a data encryption method for e-mail communication between terminals and a data encryption method for communication between terminals and a server. The server generates a pair of public key and private key for asymmetric encryption, and issues the server public key to the client for storage. A client generates a pair of public and private keys for asymmetric encryption, and uploads the public key of the client to the server; the server sets a client public key library, and stores each client public key and the registration ID serving as the identifier in the client public key library; the client is provided with a key stream generator, and generates a symmetric key by setting the number of registers. A symmetric encryption method and an asymmetric encryption method are combined so thatthe advantages of high speed of a symmetric encryption mechanism and higher security of asymmetric encryption are integrated, the occupied resources are few, and the confidentiality is high.

Description

technical field [0001] The invention belongs to the field of information communication technology, in particular to the field of information security, and relates to a hybrid encryption-based email data security protection method. Background technique [0002] With the development of network technology, the function of the network is becoming more and more powerful, and the field of network application involves all aspects of people's work, study and life. In terms of network communication, e-mail has been widely used because of its real-time and convenient characteristics, and the information forms used are also various. While the application scale of e-mail is getting larger and wider, its security is also subject to more threats and challenges. Including criminals' network attacks causing information leakage and malicious tampering and destroying the authenticity of information, etc., causing a lot of privacy and indirect property losses to network users. [0003] Moder...

AI Technical Summary

Problems solved by technology

Including cyber attacks by criminals causing information leakage and malicious tampering and destroying the authenticity of information, etc., causing a lot of privacy and indirect property losses to network users

[0003] Modern data encryption methods mainly include symmetric encryption and asymmetric encryption. The former has fast encryption speed but relatively low confidentiality, while the latter has higher security but consumes more time and memory resources for encryption.

However, existing e-mail encryption methods seldom involve the verification of information integrity.