Abstract
Password-based authentication schemes for server-client system are convenient to use, but vulnerable to dictionary attack or brute-force attack. To solve this vulnerability, Cryptographic secret key is used for security, but difficult to memorize. So, for the first time, Das proposed a biometric-based authentication scheme to solve various problems but it has various vulnerabilities. Afterwards, Jiping et al. improved Das`s scheme, but some vulnerabilities remain. In this paper, we analyze the cryptanalysis of Jiping et al.`s authentication scheme and then propose improved biometric based user authentication scheme to resolve the analyzed problem. Moreover, we conduct a security analysis for the proposed scheme and make a comparison between the proposed scheme and other biometric based user authentications.
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