SM2-based certificateless key generation method and device, electronic equipment and medium

Abstract

The invention provides an SM2-based certificateless key generation method and apparatus, electronic equipment and a medium, and is applied to a key generation server. The method comprises steps of obtaining an elliptic curve parameter applied by an SM2 algorithm; generating a first random number, and generating a system public key based on the elliptic curve parameter and the first random number; acquiring identity information of the client and a part of public keys of the client; generating a public key generation parameter and a private key generation parameter based on identity information of a key generation server, an elliptic curve parameter, a system public key, identity information of the client and a part of public keys according to a key generation mode negotiated with the client; and sending the public key generation parameter and the private key generation parameter to the client, so that the client generates an identity public key based on the public key generation parameter and generates an identity private key based on the private key generation parameter. The public and private key generation method provided by the invention is simple in process, a certificate mechanism does not need to be used in subsequent application, the key generation server is prevented from acquiring the private key of the client, and the security is high.

Description

technical field [0001] The present disclosure relates to the technical field of information security, and more specifically, relates to an SM2-based non-certificate key generation method, device, electronic equipment and media. Background technique [0002] With the development of the Internet industry, cryptography application scenarios are becoming more and more diverse. During the use of cryptography, public and private keys need to be generated, such as key generation in traditional public key systems or key generation in identification cryptography systems. [0003] The key generation of the traditional public key system, the public key is a string of random numbers, it is difficult to connect with the identifiable identification of the user in the actual application, an additional certificate authentication mechanism is required, and the certificate management is relatively cumbersome. In addition, although the identity cryptography system can directly use the user's i...

AI Technical Summary

Problems solved by technology

There are few existing certificateless key generation methods based on the design method of SM2 signature structure

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