Biometric key generation based on generated intervals and two-layer error correcting technique

Abstract

Abstract As for a biometric key, key management and biometric data security are both important. Existing bio-key generation methods are usually based on the biometric templates or features directly, it may expose user’s biometric data and will further make the biometric data permanently unusable for his secure identification recognitions. In this paper, a fingerprint bio-key generation approach using the feature distance is proposed. We utilize the relative distances among user’s fingerprint minutiae to generate a unique bio-key. Such bio-key is determinable and recoverable via the generation interval scheme. In addition, we use a two-layer error correcting technique to guarantee a better reliability during the data transmission. The experimental results positively show that our approach can ensure higher security of the bio-key and guarantee a good key regeneration rate. Besides, the storage of the original bio-key or any fingerprint template is unnecessary.