摘要
提出了一种新的思路,即由生物特征直接生成系统所需的密钥,从而降低了系统的成本和复杂性,并方便用户操作.为了保证该方法的安全性,采用改进后的切延迟椭圆反射腔混沌系统(TD-ERCS)对生物特征进行处理.实验结果表明该算法具有极高的运算速度,良好的生物特征敏感性、抗碰撞性和随机性,可实际用于生物特征密码系统.
Biometric cryptosystems are widely studied recently, which bind a cryptographic key with the biometric characteristic of a user in such a way that the key cannot be recovered without a successful biometric authentication. By now, the key is generated from extra random number generators, which makes the system more complex. A novel method is proposed, which generates the key from biometric characteristics directly, and makes the biometric cryptosystems much cheaper, simpler and more convenient. To make the keys secure enough, the TD-ERCS is adopted and revised in the proposed algorithm. Experiments show that the algorithm is sensitive to biometric characteristics, free of collision, and the generated keys seem also random. It is believed that such a algorithm can be practically used for various biometric cryptosystems.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第7期4477-4484,共8页
Acta Physica Sinica
基金
国家自然科学基金(批准号:60573047
60703035和60873201)
重庆市自然科学基金(批准号:2009BA2024)资助的课题~~