Techniques for Enhancing the Security of Fuzzy Vault: A Review

Biometric Systems are the personal identification systems that use behavioral and physiological characteristics of a person. One of the main concerns in biometrics systems is template security. Fuzzy vault, a bio-cryptosystem, is used to provide security to the stored templates. Fuzzy vault has proven to be a very good security technique, nonetheless it lacks in providing revocability and security against correlation attacks. Thus for the enhancement of the security of fuzzy vault and to overcome the limitation of correlation attack, techniques like hybrid model and multimodal biometrics can be used. This paper gives a review of the above mentioned techniques, viz. hybrid and multimodal, and how they can be effective in enhancing the security of the system.