Fingerprint Based Cryptographic Key Generation

Abstract

Secure storage of a cryptographic key is a challenging task. In this paper, a fingerprint based cryptographic key generation approach has been proposed. It can be used in a symmetric key setup. The use of gray code makes the approach interesting, as gray code reduces the mismatch of binary representations of two successive integers. It has been experimentally shown that it is impossible to generate the same key from the fingerprint of an intruder. Moreover, it does not require to store neither the fingerprint of the user nor the cryptographic key. It makes the scheme more secure.