一种适用于SM2公钥密码算法的可变密钥生成方法及装置

By using the variable key generation method of the SM2 public-key cryptography algorithm, public and private key pairs are dynamically generated, solving the problems of private key security and resource waste. This allows for periodic updates of the private key without the need for frequent certificate signing, thus saving resources.

CN116743365BActive Publication Date: 2026-07-17BEIJING YIFANG XINAN TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING YIFANG XINAN TECH CO LTD
Filing Date
2023-06-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the security of private keys is difficult to guarantee, resulting in short lifecycles for digital certificates and high frequency of certificate signing by CA authorities, which wastes computing, storage, and network communication resources.

Method used

Using the SM2 public-key cryptography algorithm, and through the new certificate signing strategy of digital certificate authorities, multiple random numbers are generated and the value of n is calculated to dynamically generate public and private key pairs. The private key is changed periodically, reducing the number of signings required by the CA.

Benefits of technology

It effectively saves computing, storage, and network communication resources, enables periodic updates of private keys without the need for frequent certificate signing, and improves private key security.

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Abstract

本发明公开了一种适用于SM2公钥密码算法的可变密钥生成方法及装置,本发明通过数字证书认证机构公开了一种全新的证书签署策略,签署的证书中的公钥,不再与一对公私钥对应,可以对应于无数公私钥。实际应用中,可以根据私钥变化周期,计算证书生存周期内需要变换的次数n,作为证书公钥对应的私钥个数。用户端根据签署策略中的证书生存周期以及私钥变换周期,计算n的数值,并基于多个随机数以及n的数值,生成第i对公私钥。从而,在数字证书认证机构签署了某证书后,允许证书对应在全生命周期内,私钥按照私钥变换周期动态更改,数字证书认证机构无需动态签署证书,有效节省了计算资源、存储资源以及网络通信资源。
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