基于无证书公钥密码体制的身份鉴别方案

An Identification Scheme Based on Certificateless Public-Key Cryptosystem

基于双线性加群G1上计算Diffie-Hellman问题的困难性假设下,采用无证书公钥密码体制密钥生成原理,首次提出了一个能有效抵抗重置攻击和冒充攻击的基于ID的身份鉴别方案,避免了基于身份的诸多方案所涉及敏感的密钥托管问题.最后在随机预言模型下给出了方案的安全性证明.

Based on the hardness assumption of Computational Diffie-Hellman problem（CDHP） in a bilinear additive group, an ID-based identification scheme is proposed. The new ID-based identification scheme can with- stand the reset attacks and impersonation attacks, and avoid the key escrow problem of many ID-based schemes by using secret key generation technique of the certificateless public key cryptosystem. Finally, security proofs of the proposed identification scheme are given under the random oracle model.