为克服基于身份的签名体制中的密钥管理问题,给出一个新的无可信PKG的基于身份的签名方案。在离散对数问题(DLP)和计算Diffie-Hellman问题(CDHP)困难假设下,它可抵抗适应性选择消息和ID攻击的签名存在性伪造。
To avoid the key escrow problem in ID-based signature scheme,a new ID-based signature scheme without trusted PKG is proposed ,which is proved to be secure against existential forgery on adaptively chosen messages and ID attacks under the assumptions of Discrete Logarithm Problem (DLP) and Computational Diffie-Hellman Problem (CDHP).