Abstract: Certificateless Public Key Cryptography（CL-PKC） eliminates the inherent key escrow problem of Identity-Based Cryptography（IBC），while preserving the attractive advantage of IBC which dispenses with certificates of traditional Public Key Cryptography（PKC） and their costly management overhead.In this paper，the author propose an efficient concrete certificateless signature scheme that is provably secure against strong adversaries in the standard model，and that can be implemented on wider elliptic curves suitable for pairings.

Key words: certificateless signature, standard model, pairings, ECC

摘要： 无证书公钥密码体制消除了基于身份公钥密码体制中固有的密钥托管问题，同时还保持了基于身份公钥密码体制的优点，那就是没有传统公钥密码体制中的证书以及证书管理带来的额外开销。提出了一种高效的可使用更多适合配对的椭圆曲线的，同时在标准模型下可证明安全的无证书签名方案。

关键词: 无证书签名, 标准模型, 配对, 椭圆曲线密码体制