Asymmetric secret key distribution and message encryption method based on identity information

Abstract

The invention relates to the field of information security, and provides an asymmetric secret key distribution and message encryption method based on identity information. The method comprises enterprise administrator initialization, a user registration process, a user point-to-point communication process and a user many-to-man communication process. User personal secret keys can be distributed more securely; secret key management systems can be constructed according to enterprises and conditions; the user public key management quantity can be reduced, and public key experiment of a user end is simplified; the probability that private keys are intercepted and stolen is reduced; the speed of a whole public key system and the operation feasibility can be improved; the adaptability of the public key system to mobile ends or other ends is enhanced; and a symmetric encryption system and an asymmetric encryption system are applied to an authentication and data transmission phase in a combined mode.

Description

technical field [0001] The invention relates to the field of information security, in particular to an asymmetric key distribution and message encryption method based on identity information. Background technique [0002] In the process of modern information transmission, more and more third-party communication tools appear on the market, and more and more intelligence traffickers, foreign evil force personnel, etc. (hereinafter referred to as hackers) start information interception work. But in the process, we found that hackers can not only attack the client and intercept the transmitted data, they are more inclined to attack the server of the third-party communication tool, and some third-party communication tool manufacturers even back up user data unconsciously. However, the traditional symmetric encryption scheme is easy to blast, and the key storage capacity is huge, so it is not suitable for complex network environments. [0003] In the process of information transm...

AI Technical Summary

Problems solved by technology

[0010] One is that we still need to store a large number of public keys (even though we may not need to store them, we still need to obtain the corresponding person’s public key from a fixed place, which has a slight delay in communication)

[0011] Furthermore, the asymmetric public-private key is obtained from a third-party server, and we cannot believe whether the communication provider will help us keep the secret (referring to unintentional disclosure or intrusion)

[0012] The most important thing is that during the key distribution process, there will be a lot of information leakage security issues

Especially in the company cluster scenario, the key distribution and management mechanism is chaotic, and it will be attacked by a man in the middle.

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