A security- and privacy-driven hybrid biometric template protection technique

Biometric template protection techniques are used to secure biometric templates from various attacks and threats. As the trade-off between the performance and the security and privacy of said techniques has drawn increasing concerns from the researchers, a single approach can no longer satisfy the elevated requirement. In this paper, a state-of-the-art hybrid template protection method, called the cancelable secure sketch (CaSS) is proposed. The concept of CaSS is demonstrated via a cancelable fingerprint, namely the multi-line code (MLC) with the code-offset construction of secure sketch. The proposed method boasts high security and privacy by virtue of the revocability of MLC. Besides, inheriting the high performance of binary MLC, the CaSS method is able to achieve 0% FRR and FAR.