A cryptographic key binding method based on fingerprint features and the threshold scheme

作者：You Lin^*; Zhang Guowei; Zhang Fan

来源：International Journal of Advancements in Computing Technology, 2011, 3(4): 21-31.

DOI：10.4156/ijact.vol3.issue4.3

• Biometric cryptographic
• Biometric features
• Cryptographic key
• Cryptographic systems
• Cryptology
• Fingerprint
• Fingerprint features
• General model
• Key binding
• Key generation
• Key recovery
• Legitimate users
• Secret key
• Shamir threshold scheme
• Threshold schemes

The biometric cryptographic system can provide a secure integration of the biometric features and the traditional cryptology. The application of biometrics based key binding method or biometric keys can not only hide the information of the users'biometric features, but can also securely realize secret key production, key recovery and authentication. This paper first proposes a general model for biometrics based key binding algorithm, and then presents a novel (cryptographic) key generation method based on fingerprint features and the Shamir threshold scheme. Our method can not only protect the legitimate user's secret key but can also effectively prevent his biometric features from being revealed. Our experimental results show that our fingerprint features based key binding method is efficient and the key success recovery rite may approach to 91 percent. But the key recovery is not so much successful as for our method to be applied for practical cryptographic system. Hence, more work has to do for our method's optimization.

• 出版日期2011
• 单位杭州电子科技大学; 海南师范大学