Biometric signature system and biometric signature method

摘要

To execute authentication in a biometric signature at high speed.SOLUTION: A biometric signature system holds a first template that first biometric information obtained by a position of a user is converted; and a second template that second biometric information obtained by the position of the user is converted by a unidirectional conversion. The first template is formed by the first biometric information of an authentication object person, and a parameter that a similarity in the first template of the authentication object person corrected by using the parameter and the first template held by the biometric signature system becomes high is specified. The second templates is generated from each second biometric information of the authentication object person corrected by using each parameter included in a predetermined range including the specified parameter. Each generated second template and the second template held by the biometric signature system are compered, and thus, success and failure of the authentication object person is determined.SELECTED DRAWING: Figure 1