[1]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(05):95-102.[doi:10.20165/j.cnki.ISSN1673-629X.2024.0046]
　ZHANG Zhi-ying*,WANG Zhi-wei.An Improved Distributed Decryption System from CL Encryption[J].,2024,34(05):95-102.[doi:10.20165/j.cnki.ISSN1673-629X.2024.0046]
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基于CL加密的改进分布式解密系统()

《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
34
期数:
2024年05期
页码:
95-102
栏目:
网络空间安全
出版日期:
2024-05-10

文章信息/Info

Title:
An Improved Distributed Decryption System from CL Encryption
文章编号:
1673-629X(2024)05-0095-08
作者:
张志莹*; 王志伟
南京邮电大学 计算机学院,江苏 南京 210023
Author(s):
ZHANG Zhi-ying*; WANG Zhi-wei
School of Computer Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China
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
Keywords:
distributed decryption system; additive homomorphism; hard subgroup membership assumption group; zero-knowledge proof; adaptive root subgroup assumption
分类号:
TP309.7
DOI:
10.20165/j.cnki.ISSN1673-629X.2024.0046
摘要:
近些年,无线医疗传感器网络(Wireless Medicine Sensor Networks,WMSNs)得到了广泛的应用。 WMSNs 提高了患者护理质量,但同时也存在许多安全隐患。 为了保护患者数据的隐私安全,Yi 等人提出了一个基于 Paillier 密码系统的分布式 ElGamal 密码系统。 然而,Rao 分析了他们的方案并展示了一种可行的攻击,该攻击允许攻击者获取密钥。 因此,是否可以将具有加法同态性质的密码系统修改为安全的分布式解密系统,以实现更简单的分布式密钥生成和更高效的分布式解密仍然是一个挑战。 针对上述挑战,该文提出了一种基于 Castagnos 和Laguillaumie(CL)加密的改进分布式解密系统,并对未知阶群 G 上的离散对数关系给出了有效的零知识证明。 与其他分布式解密系统相比,基于 CL 加密的改进分布式系统具有良好的性能、更可靠的设置、更高的安全级别。
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 aneffective 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.

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更新日期/Last Update: 2024-05-10