Patent application number | Description | Published |
20090007257 | SYSTEM, METHOD, SERVER, CLIENT TERMINAL, PROGRAM FOR BIOMETRIC AUTHENTICATION - The present invention provides a biometric authentication system including: a parameter manage server having a user parameter generating portion for generating a user parameter using a user ID transmitted from a client terminal, a master key and a temporary parameter; the client terminal having an input unit by which a user ID provided in advance for a user is input, a biological information sensor which acquires biological information of a user, a feature extracting portion which extracts feature from the biological information acquired by the biological information sensor and a transforming portion which transforms the feature using the user parameter generated by the parameter manage server to generate transformation feature; and an authentication server having a matching portion which matches the transformation feature transmitted from the client terminal against a template stored in advance in the storing portion. | 01-01-2009 |
20090070860 | AUTHENTICATION SERVER, CLIENT TERMINAL FOR AUTHENTICATION, BIOMETRICS AUTHENTICATION SYSTEM, BIOMETRICS AUTHENTICATION METHOD, AND PROGRAM FOR BIOMETRICS AUTHENTICATION - A template sharing processing is performed between a first authentication server and a second authentication server. A client terminal generates two parameter differences, one of which is sent to the first authentication server, and the other to the second authentication server. The first authentication server transforms an already-registered template with the received parameter difference to create a temporary template and sends the temporary template to the second authentication server. The second authentication server transforms the received temporary template with the already-received parameter difference to create and register therein a further transformed template. A storage medium stores therein only a single master key for generating a parameter. | 03-12-2009 |
20100106964 | AUTHENTICATION TERMINAL, AUTHENTICATION SERVER, AND AUTHENTICATION SYSTEM - In registration, a feature array x[i] obtained by client is basis-transformed into array X[i], transformed with a transformation filter array K[i] into a template array T[i] to be registered in the client. In authentication, the feature array y[i] is basis-transformed into an array Y[i] after inversely sorting and applied to filter K by computation V[i]=Y[i]K[i]. The server obtains array e[i]=Enc (T[i]), and the client obtains e′[i]=Enc (Σ | 04-29-2010 |
20110200234 | METHOD, SYSTEM AND PROGRAM FOR AUTHENTICATING A USER BY BIOMETRIC INFORMATION - A computer readable medium embodying a program to be executed by a terminal device used for a biometric authentication, the program including: an image generation code generating an enrolled image and a verification image from biometric information of a user collected at a sensor coupled to the terminal device; a filter generation code generating a random filter for scrambling the enrolled image and an inverse filter of the random filter; a transformation code transforming the enrolled image to a registration template by applying the random filter to the enrolled image and transforming the verification image to a filtered verification image by applying the inverse filter to the verification image; communication code transmitting the registration template and the filtered verification image to a biometric server thereby the biometric server performs biometric authentication of the user based on the cross-correlation between the registration template and the filtered verification image. | 08-18-2011 |
Patent application number | Description | Published |
20110185176 | BIOMETRIC AUTHENTICATION METHOD AND SYSTEM - At a registration time, a feature data array for registration is generated from biometric information acquired by a client, and a position correction template and a comparison template obtained by converting the feature data array for registration are registered in a server. | 07-28-2011 |
20110314285 | REGISTRATION METHOD OF BIOLOGIC INFORMATION, APPLICATION METHOD OF USING TEMPLATE AND AUTHENTICATION METHOD IN BIOMETRIC AUTHENTICATION - When a registration station appends an anonymous ID (AID), a linking validity of the anonymous ID and actual user ID (UID) is assured for an application businessperson in the case of applying to use a biometric authentication. Specifically, a biometric authentication service system includes a biometric authentication server, an application server, a registration station server and a client server, for holding a hash value alone of personal information (P) in the registration station server, supplying again the personal information on applying to use a template (T) for the application server, collating the hash with the previously held hash, and verifying that the user applying to use the template is identical with the user registered the biologic information in the registration station server, in addition, secret information (S) different for every user is added to the personal information to generate unique data and identify the user correctly. | 12-22-2011 |
20120005736 | BIOMETRIC AUTHENTICATION SYSTEM AND METHOD THEREFOR - In the client, a feature quantity extraction unit extracts a feature quantity from biometric information of a user. A feature quantity conversion unit converts the feature quantity by a one-time parameter. In the first server, a parameter DB stores a parameter in association with the ID. A data generation unit generates data based on the parameter corresponding to the ID transmitted from the client. In the second server, a template DB stores a template to which the feature quantity of the biometric information of the user is converted by the parameter, in association with the ID. A template conversion unit generates a one-time template by converting the template corresponding to the ID transmitted from the first server. Then, a match determination unit compares the converted feature quantity transmitted from the client or the data transmitted from the first server with the one-time template to determine whether they match or not. | 01-05-2012 |