A relation between irreversibility and unlinkability for biometric template protection algorithms
学 井沼 · Institutional Repositories DataBase (IRDB) · 2014
For biometric recognition systems, privacy protection of enrolled users’ biometric information, which are called biometric templates, is a critical problem. Recently, various template protection algorithms have been proposed and many related previous works have discussed security notions to evaluate the protection performance of these protection algorithms. Irreversibility and unlinkability are important security notions discussed in many related previous works. In this paper, we prove that unlinkability is a stronger security notion than irreversibility.