一种指纹生物特征的隐私保护和认证方法

Privacy Protection and Certification Method for Fingerprint Biometric Characteristics

近年来,越来越多的智能终端和信息系统集成了生物识别技术,并在金融、安防等领域中广泛使用。用户的生物特征信息一旦泄露,将严重威胁用户的切身利益。依托模糊提取技术、纠错算法和安全散列算法,提出了一种指纹生物特征的隐私保护和认证方法。该方法中,指纹注册阶段并不保存指纹图像、细节点特征等原始信息,仅保留由纠错编码算法和安全散列算法生成的辅助数据,从而达到隐私保护的目的。身份认证时,通过辅助数据结合纠错运算去除图像采集误差并进行安全散列运算密文比对,完成用户身份的识别。

In recent years,more and more intelligent terminals and information systems have integrated biometric technology,and are widely used in financial security or other fields.Once the user's biometric information is leaked,it will seriously threaten the user's personal interests.Relying on fuzzy extraction technology and safety hash algorithm,a privacy protection and identify authentication method of fingerprint biometric characteristics is proposed.In this method,the fingerprint registration phase does not save the original information such as fingerprint images and detail point features,but only retains the auxiliary data generated by the error correction coding algorithm and the secure hash algorithm,so as to achieve the purpose of privacy protection.When performing identity authentication,the auxiliary data is combined with the error correction operation to remove the image acquisition error and perform the secure hash operation cipher text comparison to complete the identification of the user.