Patent ID: 9009486
Filing Date: 2015-04-14
Classification: G06F,G06K,H04L

Abstract:
1. A biometric authentication apparatus comprising: a memory storing, as registration biometric information, biometric information that is transformed by using a first transformation variable; and a processor coupled to the memory, wherein the processor executes a process comprising: first transforming, by using a second transformation variable, biometric information that is an input checking target to create checking biometric information; second transforming the checking biometric information created at the first transforming biometric information by using a differential transformation variable by which a transformation state of the registration biometric information generated by the first transformation variable and a transformation state of the checking biometric information generated by the second transformation variable have a same state; and checking the checking biometric information transformed at the second transforming the checking biometric information against the registration biometric information stored in the registration biometric information storing unit to perform authentication, wherein the first transforming biometric information creates the checking biometric information by using the second transformation variable that is created in accordance with the differential transformation variable.