在基于ID的无证书签名方案的基础上,通过模糊提取器获取生物特征信息来构造密钥,结合CL-PKC私钥生成原理,提出了一种基于生物特征的无证书签名方案.新方案在随机预言模型下是可证安全的,而且能够抵抗适应性选择消息攻击和ID攻击下的存在性伪造.该方案不仅解决了密钥托管问题而且与传统的方案相比具有较高的效率. Based on the certificateless signature scheme based on ID, a key is constructed by using fuzzy extractor to obtain biometric information, and a certificateless signature scheme based on biometric feature is proposed based on the principle of CL-PKC private key generation. It is provably secure under the stochastic predictive model, and it can resist the existence of selective spoofing under adaptive selective message attack and ID attack. This scheme not only solves the key escrow problem but also has higher efficiency than the traditional scheme.