摘要:
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.
摘要:
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.At an authentication time, a feature data array for authentication is generated from biometric information acquired by the client, and converted feature data for position correction obtained by converting the feature data array for authentication is transmitted to the server. The server detects a position correction amount of the feature data array for authentication relative to the feature data array for registration using the position correction template and the converted feature data for position correction, and transmits the position correction amount to the client. The client corrects the feature data array for authentication using the position correction amount and transmits the converted feature data array for comparison to the server. The server calculates a distance between the comparison template and the converted feature data array for comparison and determines success or failure of the authentication on the basis of the distance.
摘要:
In a biometrics authentication system inputting biometric information and outputting a user ID, speedup of 1:N matching on the side of server achieved when cancelable biometrics authentication is realized in which matching is carried out. During registration, similarity of a feature to a dummy feature is searched and the feature is transformed by using a transform parameter corresponding to a nearest neighboring dummy feature. The transformed feature and a group ID are transmitted to the server and the server registers the transformed feature at the group in a DB. During authentication, like the registration process, similarity search of a feature is carried out and the feature is transformed by using transform parameter corresponding to a nearest neighboring dummy feature. The transformed feature and group ID are transmitted to the server. The server executes 1:1 matching between a template a the group in the DB and the transformed feature.
摘要:
The present invention captures user's biometric data during enrollment and converts it by a given conversion parameter to create a template. It creates verification information for the conversion parameter, and enrolls it in an authentication server together with the template. The conversion parameter is stored in an IC card or the like for issuance to the user. During authentication, the authentication server verifies that the authentication terminal knows the conversion parameter, using conversion parameter verification information. Next, the authentication terminal converts user's biometric data newly captured by a conversion parameter to create matching information, and transmits it to the authentication server. The authentication server matches the matching information with the template to determine whether the user is a principal.
摘要:
In a biometrics authentication system inputting biometric information and outputting a user ID, speedup of 1:N matching on the side of server is achieved when cancelable biometrics authentication is realized in which matching is carried out. During registration, similarity of a feature to a dummy feature is searched and the feature is transformed by using a transform parameter corresponding to a nearest neighboring dummy feature. The transformed feature and a group ID are transmitted to the server and the server registers the transformed feature at the group in a DB. During authentication, like the registration process, similarity search of a feature is carried out and the feature is transformed by using transform parameter corresponding to a nearest neighboring dummy feature. The transformed feature and group ID are transmitted to the server. The server executes 1:1 matching between a template a the group in the DB and the transformed feature.
摘要:
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.
摘要:
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.
摘要:
The authentication server authenticated by a public key certificate at the time of authentication generates a difference parameter, transforms a template by the difference parameter to create a temporary registration template, and transmits the difference parameter to a tamper resistant device. The tamper resistant device generates a temporary parameter from the held transformation parameter and the difference parameter. A client terminal transforms feature using the temporary parameter, and generates temporarily-transformed feature. An authentication server receives the temporarily-transformed feature, and verifies whether the temporary registration template is in agreement with the temporarily-transformed feature.
摘要:
At registration time, feature data array for registration is generated from biometric information, and position correction template and comparison template. At authentication time, feature data array for authentication is generated from biometric information acquired by the client, and converted feature data for position correction obtained by converting the feature data array for authentication is transmitted to the server. The server detects position correction amount of the feature data array for authentication relative to the feature data array for registration using the position correction template and the converted feature data, and transmits the position correction amount to client. Client corrects the feature data array for authentication and transmits the converted feature data array for comparison to the server. Server calculates a distance between the comparison template and the converted feature data array for comparison and determines success or failure of the authentication on the basis of the distance.
摘要:
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 (ΣjX[j]Y[j]α−ij) and shuffles each elements. The shuffled array eσ′[i] is transmitted to the server and then decoded to obtain Cσ′[i] which provides determination of whether the feature arrays x and y match with each other or not.
摘要翻译:在注册中,由客户端获得的特征数组x [i]被基变换为阵列X [i],并将其转换为要在客户端注册的模板阵列T [i]。 在认证中,特征阵列y [i]在反向排序后被基变换成阵列Y [i],并通过计算V [i] = Y [i] K [i]应用于滤波器K. 服务器获取数组e [i] = Enc(T [i]),并且客户端获得e'[i] = Enc(&Sgr; jX [j] Y [j]α-ij)并且洗牌每个元素。 混洗后的数组e&sgr;'[i]被发送到服务器,然后被解码以获得C&sgr;'[i],其确定特征数组x和y是否彼此匹配。