Speech cryptographic key regeneration based on password

In this paper, we propose a way to combine a password with a speech biometric cryptosystem. We present two schemes to enhance verification performance in a biometric cryptosystem using password. Both can resist a password brute-force search if biometrics are not compromised. Even if the biometrics are compromised, attackers have to spend many more attempts in searching for cryptographic keys when we compare ours with a traditional password-based approach. In addition, the experimental results show that the verification performance is significantly improved.