一种概率型非对称公钥密码体制的设计和实现  

DESIGN AND REALIZATION OF A PROBABILITY ASYMMETRIC PUBLIC-KEY ENCRYPTION SCHEME

作　　者：郭伟青[1] 陈丹[2] 童华章[3] 

机构地区：[1]浙江工业大学之江学院,浙江杭州310024 [2]浙江大学城市学院,浙江杭州310015 [3]浙江大学信息学院,浙江杭州310027

出　　处：《计算机应用与软件》2007年第6期170-172,共3页Computer Applications and Software

摘　　要：在分析传统公钥密码体制的基础上,设计并实现了一种基于Diffie Hellman判定问题,辅以抗碰撞的Hash函数和公钥证书进行加密和解密,安全性可证明的概率型非对称密码系统。它比基本Cramer-Shoup体制具有更高的效率,且同样具有抵抗自适应选择密文攻击的能力。Based on the existing basic public key encryption schemes, an efficient certificate-associated public key encryption scheme is designed and implemented. The scheme is based on certificate data and the collision-free hash functions. It is more efficient than the basic Cramer-Shoup＇s encryption scheme while its security against self-adaptive chosen ciphertext attacks can be proved under the hardness assumption of decisional Difie-Hellman problem.

关 键 词：加密和解密 Diffie Hellman判定问题 公钥 算法 

分 类 号：TN918.1[电子电信—通信与信息系统]