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Research On Authentication Algorithm Of Biometrical Properties Information

Posted on:2011-10-05Degree:MasterType:Thesis
Country:ChinaCandidate:W X ZhuFull Text:PDF
GTID:2178360308450206Subject:Computer technology
Abstract/Summary:PDF Full Text Request
For the reason of stability and uniqueness, biometric properties become a reliable and effective way of identity authentication. Biometrics and identity authentication will be widely used in the future. The paper studies several methods of biometrics and identity authentication and supplies a gap in security aspect of Juels Wattenberg scheme.But there are some difficulties in the process of identity authentication based on biometric properties. For example, during the collection process, the information of biometric properties is always disturbed by some uncertain factor. So it can't be read correctly. Error-correcting codes will be helpful. By error-correcting coding, the interference will be removed and the biometric properties information can be read correctly. Equidistant codes are error-correcting codes with excellent properties. They are constant length, easily coding and decoding. The distance is constant between any of two codes which belong to the same code section. The paper studies coding theory of equidistant codes and describes two construction methods of equidistant codes. The problems in the process of identity authentication will be solved. The accuracy will be also improved.Juels Wattenberg scheme which based on error correcting codes is an authentication protocol of biometrical properties. It's quite simple and efficient. But it has some flaws. The intruder can easily gain false biometrical properties after comparison the information stored in the system. The improved scheme is proposed here. It modifies the enrollment process and coding methods. Both theoretical and experimental certification shows that the improved scheme will enhance the security compared to the original.In the paper, the improved scheme not only enhances the security, but also makes the authentication process of biometric properties more accurate and stable. It will be great significance to the wide application of biometric authentication technique in the future.
Keywords/Search Tags:biometrics, identity authentication, error correcting, equidistant code
PDF Full Text Request
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