密文类型可修改的基于格代理重加密方案
针对如何构造一个有效的抗量子攻击的类型代理重加密方案这个问题,对Zhang等人提出的格上基于身份的代理重加密方案进行分析,证明其存在私钥泄露和不能抗合谋攻击的问题;基于格上的LWE困难问题提出了第一个基于格的密文类型可以修改的类型代理重加密方案,其安全性可以规约为LWE困难性假设,并证明该方案是IND-CPA安全的。该方案不仅具有传统类型代理重加密方案的功能,而且可以抗量子攻击,密文的授权人可以随时修改密文的类型,具有更加广泛的应用场景。...
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| Published in | 计算机应用研究 Vol. 34; no. 1; pp. 224 - 228 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
北京印刷学院，北京 102600
2017
北京电子科技学院，北京 100070%北京电子科技学院,北京,100070 西安电子科技大学 通信工程学院，西安710071%西安电子科技大学 通信工程学院，西安710071 |
| Subjects | |
| Online Access | Get full text |
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| Summary: | 针对如何构造一个有效的抗量子攻击的类型代理重加密方案这个问题,对Zhang等人提出的格上基于身份的代理重加密方案进行分析,证明其存在私钥泄露和不能抗合谋攻击的问题;基于格上的LWE困难问题提出了第一个基于格的密文类型可以修改的类型代理重加密方案,其安全性可以规约为LWE困难性假设,并证明该方案是IND-CPA安全的。该方案不仅具有传统类型代理重加密方案的功能,而且可以抗量子攻击,密文的授权人可以随时修改密文的类型,具有更加广泛的应用场景。 |
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| Bibliography: | 51-1196/TP In order to construct an efficient type-based proxy re-encryption scheme that can resist the quantum attack, this paper eryptanalyzed Zhang＇ s IBPRE scheme based on lattice, and shown that the scheme was vulnerable to collusion attack so that the private key was leaked. It presented the first dynamic type-based proxy re-eneryption scheme based on lattice hard problem, whose security proved reduced to LWE assumption tightly. The construction was IND-CPA-secure cryptosystem. The scheme not only had the functions of the traditional type-based proxy re-encryption scheme, but also could resist the quantum attack, and the delegator of the ciphertext could modify the type of ciphertext dynamically. The proposed scheme is more useful in practical applications. Li Zichen1,2, Zhang Yuiong2,3 , Yang Yatao3 （1. Beijing Institute of Graphic Communication, Beijing 102600, China; 2. School of Telecommunications Engineering, Xidian University Xi ＇ an 710071, China ; 3. Beijing Electronic Science ＆ Technology Institu |
| ISSN: | 1001-3695 |
| DOI: | 10.3969/j.issn.1001-3695.2017.01.051 |