基于PKI的具有私钥可更新属性的公钥加密方案  

A Public Key Encryption Scheme Based on PKI with Updatable Private Key Attribute

作　　者：段鑫 夏喆[1] DUAN Xin;XIA Zhe(Wuhan University of Technology,Wuhan Hubei 430070,China)

机构地区：[1]武汉理工大学,湖北武汉430070

出　　处：《信息安全与通信保密》2024年第11期49-57,共9页Information Security and Communications Privacy

摘　　要：公钥加密技术的出现解决了对称加密技术长期存在的密钥分发、密钥管理、抵赖否认等问题。然而基于PKI的公钥加密方案仍存在2个问题,一是如果私钥长期使用不更新,易造成密钥泄露的问题,降低方案的安全性;二是如果私钥频繁更新,则公钥也需要随之更新,造成证书管理困难问题。针对现有公钥加密方案的不足,提出了一种基于PKI的具有私钥可更新属性的公钥加密方案,该方案可在保持公钥不变的前提下进行私钥更新,有效解决了上述问题。The emergence of public key encryption has addressed longstanding issues associated with symmetric encryption,such as key distribution,key management,and non-repudiation.However,public key encryption schemes based on PKI still face two problems:one is that if a private key is used for an extended period without updating,it becomes susceptible to key leakage,thus reducing the scheme’s security;the other is that if private keys are frequently updated,the corresponding public keys must also be updated,complicating certificate management.To address these deficiencies in existing public key encryption schemes,this paper proposes a public key encryption scheme based on PKI with updatable private key attribute.The scheme allows private key updates while keeping the public key unchanged,thus effectively solving the aforementioned problems.

关 键 词：公钥加密 密钥泄露 证书管理 私钥更新 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]