期刊名称：International Journal of Electronics Communication and Computer Engineering
印刷版ISSN：2249-071X
电子版ISSN：2278-4209
出版年度：2013
卷号：4
期号：3
页码：1066-1070
出版社：IJECCE
摘要：The problem with traditional cryptography authentication is that the keys that are very long, difficult to memorize and can easily be attacked. Although it provides sample security but these algorithms are secure only when the key is secure. So instead of using conventional cryptographic approach for protecting or authenticating user data, biometric security techniques are used. In this paper the concept of bio-chaotic algorithm is proposed to generate a biometric chaotic -keys to encrypt and decrypt the data in cipher block chaining mode. The biometric template is first decomposed using discrete wavelet transform. The horizontal and vertical coefficients are processed to extract the features which generate the bio-chaotic keys on mixing with chaotic logistic function. The proposed bio-chaotic key based block encryption system provides two levels of security, which can be controlled through the random secret key and the biometric template as well. The experimental results of randomness, histogram distribution, mean value, correlation coefficient and entropy validate the high encryption performance of the proposed bio-chaotic block encryption algorithm
