Modified private key generation for Biometric Signatures

Although PKI offers many advantages like authentication, integrity, non-repudiation and confidentiality, it cannot identify the maker of a transaction. It can only identify maker's belongings (disks, smart cards) or what he remembers (passwords, PINs etc). Integrating biometrics with PKI to directly generate private key can not only identify the maker accurately but can also resolve the key management issue by not having to store the private key anywhere. We proposed a new system to generate digital signatures using biometrics and denominated it as Biometric Signatures in [1,2]. We also discussed two schemes to generate Biometric Signatures using RSA and DSA. This paper gives detail description of the modifications suggested for private key generation in [1,2] using both schemes to allow certificate renewal. This paper also proposes a new method to generate private keys for Biometric Signatures using RSA. Speed of Biometric Signatures using modified schemes for iris recognition and comparative key generation speeds for various biometrics is presented using JAVA implementation of both approaches.