云计算中基于身份的双服务器密文等值判定协议
发布时间：2018-10-30 06:24
【摘要】：随着云存储的快速普及以及公众隐私保护意识的提升,越来越多的隐私数据被加密存储在云上.因而,如何对密文数据特别是采用公钥密码体制加密的数据进行高效检索成为了一个重要研究内容.带密文等值判定的公钥加密协议是其中一种检索方法,它可以在不泄漏明文内容的情况下判定2段密文对应的明文是否相同.最近,一系列带密文等值判定的公钥加密协议被提出.然而,在这些协议中,只用了一个服务器来执行等值判定操作,不能抵抗恶意服务器的内部关键字猜测攻击.为了解决这个问题,首次提出了基于双服务器的带密文等值判定的公钥加密协议,并在随机预言机模型下证明了它的安全性.同时,也对设计的协议进行了性能分析,分析表明:该协议适合资源受限的移动设备.
[Abstract]:With the rapid popularization of cloud storage and the improvement of public privacy awareness, more and more privacy data are encrypted and stored in the cloud. Therefore, how to efficiently retrieve ciphertext data, especially those encrypted by public key cryptosystem, has become an important research content. The public key encryption protocol with ciphertext equivalence determination is one of the retrieval methods. It can determine whether the plaintext corresponding to two ciphertext sections is the same or not without revealing the contents of plaintext. Recently, a series of public-key encryption protocols with ciphertext equivalence decision have been proposed. However, in these protocols, only one server is used to perform the equivalent decision operation, which cannot resist the internal keyword guessing attack of the malicious server. In order to solve this problem, a public key encryption protocol with ciphertext equivalence judgment based on dual servers is proposed for the first time, and its security is proved under the stochastic oracle model. At the same time, the performance analysis of the designed protocol shows that the protocol is suitable for mobile devices with limited resources.
【作者单位】： 软件工程国家重点实验室(武汉大学);武汉大学计算机学院;
【基金】：国家自然科学基金项目(61472287) 湖北省自然科学基金重点项目(2015CFA068)~~
【分类号】：TP309
，
本文编号：2299175
[Abstract]:With the rapid popularization of cloud storage and the improvement of public privacy awareness, more and more privacy data are encrypted and stored in the cloud. Therefore, how to efficiently retrieve ciphertext data, especially those encrypted by public key cryptosystem, has become an important research content. The public key encryption protocol with ciphertext equivalence determination is one of the retrieval methods. It can determine whether the plaintext corresponding to two ciphertext sections is the same or not without revealing the contents of plaintext. Recently, a series of public-key encryption protocols with ciphertext equivalence decision have been proposed. However, in these protocols, only one server is used to perform the equivalent decision operation, which cannot resist the internal keyword guessing attack of the malicious server. In order to solve this problem, a public key encryption protocol with ciphertext equivalence judgment based on dual servers is proposed for the first time, and its security is proved under the stochastic oracle model. At the same time, the performance analysis of the designed protocol shows that the protocol is suitable for mobile devices with limited resources.
【作者单位】： 软件工程国家重点实验室(武汉大学);武汉大学计算机学院;
【基金】：国家自然科学基金项目(61472287) 湖北省自然科学基金重点项目(2015CFA068)~~
【分类号】：TP309
，
本文编号：2299175
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