| 摘要 |
PROBLEM TO BE SOLVED: To attain safe cancellable biometrics with less deterioration of accuracy to displacement or distortion of fingerprint. SOLUTION: A client extracts a plurality of feature points and information for identifying each feature point (identification information) from a fingerprint of an individual in registration, randomly creates a transformation parameter for each feature point, and converts the coordinates and direction thereof. The converted identification information (template) is transmitted to an authentication server and registered in a storage part. The identification information and transformation parameter of each feature point are stored in a user's storage medium. In individual authentication, the client extracts feature points from the fingerprint of the individual, and identifies the feature points by use of the identification information in the storage medium. With respect to each identified feature point, a corresponding transformation parameter is read from the storage medium to be converted, and the converted information is transmitted to the authentication server. The server authenticates the individual by collating the received identification information with the template previously registered. COPYRIGHT: (C)2008,JPO&INPIT |
