计算机技术与发展2024，Vol.34Issue(5)：95-102,8.DOI:10.20165/j.cnki.ISSN1673-629X.2024.0046
基于CL加密的改进分布式解密系统
An Improved Distributed Decryption System from CL Encryption
摘要
Abstract
In recent years,Wireless Medicine Sensor Networks(WMSNs)have been widely used.WMSNs improve the quality of patient care,but also bring many safety danger.In order to protect the privacy of patient data,Yi et al.proposed a distributed ElGamal cryptosystem based on Paillier cryptosystem.However,Rao analyzed their scheme and demonstrated a viable attack that allows an attacker to obtain the key.Therefore,it remains a challenge whether cryptosystems with additive homomorphic properties can be modified into secure distributed cryptosystems for simpler distributed key generation and more efficient distributed decryption.Aiming at the above challenges,we propose an improved distributed decryptosystem based on Castagnos and Laguillaumie(CL)encryption,and give an effective zero-knowledge proof for the discrete logarithm relationship on the unknown order group G.Compared with other distributed cryptosystems,the improved distributed system based on CL encryption has better performance,more reliable setup,and higher security level.关键词
分布式解密系统/加法同态/HSM群/零知识证明/自适应根子群假设Key words
distributed decryption system/additive homomorphism/hard subgroup membership assumption group/zero-knowledge proof/adaptive root subgroup assumption分类
信息技术与安全科学引用本文复制引用
张志莹,王志伟..基于CL加密的改进分布式解密系统[J].计算机技术与发展,2024,34(5):95-102,8.基金项目
2022年信息安全国家重点实验室开放课题项目(2022-MS-5) （2022-MS-5）
江苏省研究生科研与创新计划项目(KYCX22_0987) （KYCX22_0987）
