基于多线性映射的可公开验证加密方案

基于多线性映射的可公开验证加密方案 Publicly Verifiable Encryption in Multilinear Maps 张敏情 ZHANG Minqing 1 2 first-author 张腾飞 ZHANG Tengfei 2 王绪安 WANG Xu’an 2 西北工业大学计算机学院 西北工业大学计算机学院 School of Computer Science,Northwestern Polytechnical University School of Computer Science,Northwestern Polytechnical University 武警工程大学电子技术系 武警工程大学电子技术系 Department of Electronic Technology,Engineering College of Chinese Armed Police Force Department of Electronic Technology,Engineering College of Chinese Armed Police Force 为提高可公开验证加密方案的安全性,提出一种标准模型下基于多线性映射的可公开验证加密方案.通过用户公钥验证密文中陷门的合法性,结合多线性映射性质实现可公开验证,使用一次签名算法提升方案的安全性,并进行了安全性证明.分析结果表明,该方案是标准模型下选择密文攻击安全,不需要用户的私钥就能对密文进行验证,在安全性上有很大提高. To improve the security of the existing publicly verifiable algorithms,apublicly verifiable encryption scheme in the standard model was proposed in this paper.The scheme was constructed in multilinear maps.Users’ public key was used to verify the validity of the trapdoor in the cipher text,and the properties of multilinear maps were also used in public verification.One-time signatures were used to improve the security of the scheme,and the security proof was given.Analysis indicates that the scheme can resist chosen ciphertext attack effectively in standard model,and verify the cipher without users’ private key.It can improve a lot on safety. 可公开验证 标准模型 多线性映射 选择密文攻击安全 加密 publicly verifiable standard model multilinear map chosen ciphertext attack security encryption 10.14188/j.1671-8836.2014.06.010 TP309.7 国家自然科学基金资助项目（61103230）;陕西省自然科学基础研究计划项目（2014JM8300） 2014-06-01 2021-04-01 6 60