摘要
该文在标准模型下构建了一个实用的无证书公钥加密体制(CL-PKE),相比于其他的CL-PKE加密体制,该体制在加密时没有椭圆曲线上的对运算,而且所基于的难解性问题假设是自然的双线性Diffie-Hellman(BDHP)问题。为提高安全性,该文的安全模型选用了标准模型下的选择性身份(Selective-ID)模型,在提高效率的同时也增强了安全性。
A certificateless public key encryption（CL-PKE） algorithm is presented.The proposed CL-PKE algorithm is based on the nature BDHP difficulty assumption and therefore avoids paring computation on elliptic curves,which is the most expensive operation in the encryption algorithm.In CL-PKE algorithm,the selective-ID model is applied instead of the random oracle model.The security and efficiency of the algorithm can be improved compared with some other CL-PKE schemes.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2010年第6期906-910,共5页
Journal of University of Electronic Science and Technology of China
基金
山东省自然科学基金(Y2007G37
2007G10001012)
