指纹IRLRD特征数字签名技术

DIGITAL SIGNATURE TECHNOLOGY BASED ON IRLRD FEATURE OF FINGERPRINT

指纹密码技术是密码学研究的新领域。在深入研究指纹生物特征识别、密码技术发展、加密算法原理的基础上,结合指纹密码技术,提出指纹IRLRD(Intensive Random Local Regoin Descriptor)特征,并将其融入数字签名技术。指纹IRLRD特征是基于方向场的指纹奇异点检测与提取,利用随机局部区域描述子特征来确定指纹特征。该技术利用指纹IRLRD特征生成密钥对明文进行数字签名,解决了密钥的隐秘问题和公开的自认证问题。指纹特征密码的保密性和密码学计算困难问题为该技术提供了双重安全保障,安全性分析表明该技术抗攻击性能强。

Fingerprint cryptography is a new field of cryptography. Based on the research of fingerprint biometrics, cryptography and cryptographic algorithm, combined with fingerprint cipher technology, the fingerprint IRLRD feature is proposed and integrated into the digital signature technology. The IRLRD feature of the fingerprint is to detect and extract the singular points of fingerprint based on directional field, to determine the fingerprint features by using random local descriptors. The technique uses the fingerprint IRLRD feature to generate the key to digitally sign the plaintext, which solves the problem of secret key and public self-authentication. Security of fingerprint feature and cryptography computing difficulties provide a double security safeguard for the technique. And the security analysis shows that the encryption technology is highly resistant to attack.