RELATION ENCRYPTION OF APPROXIMATION RELATION BASED ON IDENTIFICATION OF PARITY VALUE UNDER PRESENCE OF NOISE

摘要

PROBLEM TO BE SOLVED: To provide a method for biometric authentication using a relation linear encryption system and a non-temporary computer readable medium.;SOLUTION: A method includes the steps of: receiving first and second linear cipher texts representing first and second biometric templates encrypted by using a relation linear encryption system (linear system) on the basis of learning of parity having noise; discovering linear relation between the first and second linear cipher texts; receiving first and second approximation hash values representing the first and second biometric templates encrypted by using a relation approximation hash system (approximation system) on the basis of the linear system and an error correction code; detecting approximation between the first and second approximation hash values at the point of view of Hamming distance; and verifying the sameness of a user on the basis of the approximation and the linear relation.;SELECTED DRAWING: Figure 4;COPYRIGHT: (C)2018,JPO&INPIT