Combination of Iris Recognition and Cryptography for Information Security

The combination of biometrics and cryptography is a promising information security technique which offers an efficient way to protect the biometric template, as well as to facilitate user authentication and key management. We propose a key-binding scheme based on iris data, in which reliable region is selected to reduce the intra-class variation, and error control technique that combines RS and convolutional codes is used to increase the key length. The scheme does not reveal any significant information about the key and the original iris template, and the system achieves a false rejection rate (FRR) of less than 0.5% with the key length of 218 bits.