A Biometric Identity Based Signature Scheme with Convenient Verification

We describe an identity based signature scheme that uses biometric data to construct the public key. A biometric reading provided by the alleged signer would be enough to verify the signature. We make use of fractal transform and entropy arrangement algorithm to generate the public key string from a biometric measurement. We then make use of Shamir scheme [1] to perform signing and verification. Finally, we describe two possible attacks on this system and suggest ways to combat it. The result of experiments have shown that the scheme could satisfy the practical applies.