JP4742846B2 - Biological information verification system - Google Patents

Description

  The present invention relates to a collation device and a collation system using biometric information, and in particular, relates to generation of three-dimensional biometric information combining two-dimensional biometric information, setting of a reference position for three-dimensional biometric information, and grasping the position of a biometric feature point. .

In general, the biometric information matching system has high security because the biometric information is provided in the individual's body and is not stolen like a key. However, it is not impossible to make a copy of biometric information. For example, when the biometric information is a fingerprint, a finger model that duplicates the fingerprint of a registered person can be created and read by the biometric information recognition device. it can.
In order to solve such a problem, for example, when the biometric information is a fingerprint pattern, the type and order of the fingers to be collated are determined, and the technique in which the person is read in the determined order is there were. (For example, Patent Document 1)
Moreover, in the fingerprint collation device in Patent Document 1, since the types and order of a plurality of fingers to be collated are fixedly set, a plurality of pieces of biological information are registered in advance for each type, and the registered biometrics are registered. There has been a collation method in which at least one of information is selected at random, and input of biological information of a randomly selected type is instructed. (For example, Patent Document 2)
JP 61-175865 JP 11-53540 A

  However, among the above-described prior arts, in Patent Document 1, the biometric matching device is made to recognize a plurality of specific fingers in the order in which the person recognizes. It must be said that there is an inconvenience.

  Further, among the above-described conventional techniques, in Patent Document 2, the apparatus randomly selects biometric information, indicates the selected biometric information, and collates at least one instructed biometric information. It must be said that there are inconveniences for users.

  Further, the above-described conventional technology relates to a process of collating in one apparatus biometric information read from a biometric information recognition apparatus and biometric information stored in advance in the biometric information collating apparatus. .

  In other words, the network does not include the process of transmitting the biometric information read from the biometric information recognition device to the biometric information management subsystem via the network and checking the biometric information stored in advance in the biometric information management subsystem. It does not include measures related to reading biological information flowing through. Further, in the above-described conventional technology, biological information is handled (processed) as two-dimensional information, and is not handled as.

  In the biometric information collation system which is an example of the present invention, user authentication that is convenient for the user can be performed by using one type of biometric information instead of using a plurality of pieces of biometric information.

  On the other hand, using only one type of biometric information may increase the risk of duplication of biometric information, and the above-described conventional technology has been developed to address these problems. Therefore, in the present invention, it is difficult to duplicate biological information by using, for example, part or all of a fingerprint or finger vein as three-dimensional information, instead of using a plurality of biological information. It is much more difficult to imitate a three-dimensional feature point compared to, for example, fingerprint replication as two-dimensional information.

  On the other hand, when biometric information is handled as three-dimensional information, complicated calculation is required, so that processing time is required and user convenience is reduced.

  Therefore, in the present invention, the strictness of identity verification is increased by using three-dimensional biological information, and the coordinates in a complete three-dimensional space composed of vertical, horizontal, and height are not used, but will be described below. By using the processing, the position of the biometric feature point can be calculated in a short time.

The biometric information collation system according to the present invention is composed of a biometric information collation subsystem and a biometric information management subsystem, and the biometric information read from the biometric information recognition device of the biometric information collation subsystem is converted to biometric information via the network. The personal authentication is performed by transmitting it to the management subsystem and collating it with the biological information registered in the biological information management subsystem.
Hereinafter, the two position grasping processes in the present invention will be described using a biological information matching system in which each process is incorporated.

  First, processing for grasping the position of one biometric feature point using latitude, longitude, altitude, and distance will be described. In this process, the position of one biological feature point in the three-dimensional space, including the latitude and longitude, and using either the distance from the reference point or the altitude from the altitude reference plane, To grasp.

For example, in the case of a finger vein, the vein pattern formed by the branch point of the blood vessel that is the feature point and the blood vessel that connects the branch point has inherently three-dimensional properties, and is vertical, horizontal, and high compared to the fingerprint. In this respect, it is more varied, and is suitable for application of this processing.
In this process, a near-infrared light source and a camera are used to first photograph biological feature points such as vein branch points from a specific direction, and then photograph the same biological feature point from another direction orthogonal to the specific direction. Then, the photographed photograph is subjected to image processing to extract coordinate information regarding the feature points of the finger vein.

In addition, grasp the coordinates of the vein branch point, which is a biometric feature point, as three types of information, including latitude and longitude, plus either the distance from the reference point or the altitude from the altitude reference plane. The biometric information thus registered is registered in advance in the biometric information management subsystem as coordinate information.
In this case, the biometric information registered in the biometric information management subsystem may be a pattern formed by the coordinates of the individual biometric feature points instead of the coordinates of the individual biometric feature points.
When performing identity verification, first, when the user starts the operation of the biometric information matching subsystem, the biometric information recognition apparatus sets the center of latitude and longitude on the first plane according to the type of the biometrics. And measuring the latitude and longitude of the biometric feature point with reference to the set center, and then setting the center of the latitude and longitude according to the type of the living body on the second plane orthogonal to the first plane, The latitude and longitude of the biometric feature point are measured with the set center as a reference.

  Next, in each plane, three types are extracted including the latitude and longitude, and adding either the distance from the reference point of the three-dimensional information to the biometric feature point or the altitude from the altitude reference plane. The extracted information is transmitted as coordinate information to the biological information management subsystem via the network.

  Next, in the biometric information management subsystem, the management program performs identity verification by comparing the coordinate information received from the biometric information matching subsystem with the coordinate information registered in advance.

  In this processing, one target biological feature point is measured as a complete three-dimensional coordinate composed of vertical, horizontal, and height, and the longitude measured on one plane is measured on the other plane. The same number as the altitude.

  Next, regarding the position of two biometric feature points, the position of one biometric feature point is measured using one of the two orthogonal planes, and the other biometric feature point is simultaneously measured using the other of the two orthogonal planes. A process for measuring the position of will be described.

  In this process, the position of the target biometric feature point is not measured as a complete three-dimensional coordinate consisting of vertical, horizontal, and height, but on two two-dimensional planes with a 90-degree crossing angle. The position of each biometric feature point is measured simultaneously as coordinates using latitude and longitude, and the two measured coordinates are recognized in association with each other.

  The aim is to make it difficult to forge the living body by recognizing the positions of the two biological feature points on a two-dimensional plane having an intersection angle of 90 degrees.

This processing can be applied to biological information that has a feature on the surface of a living body such as a fingerprint and it is difficult to measure one feature point in three dimensions. For example, in the case of a fingerprint, a projection image is created on a plane composed of vertical and horizontal planes using two-dimensional information about feature points obtained by placing the lower plane of the finger on the fingerprint sensor, and the side plane of the finger Using the two-dimensional information about the feature points obtained by bonding the image sensor to the fingerprint sensor, a projected image on the surface composed of the width and height is created. Three-dimensional biological information that combines projection images composed of heights is created and registered in advance in the biological information management subsystem as a master.
When performing identity verification, first, when the user starts the operation of the biometric information matching subsystem, the biometric information recognition device collects feature points on the lower plane of the finger as two-dimensional position information, and then the finger side Feature points are collected from the plane as two-dimensional information.

  Next, in the biometric information matching subsystem, the recognition program creates a projection image of the two-dimensional information about the feature points collected from the lower plane of the finger onto a plane composed of length and width, and collects it from the side plane of the finger Using the two-dimensional information on the feature points, a projected image is created on the surface composed of the horizontal and height, and a projected image composed of the vertical and horizontal and a projected image composed of the horizontal and height The three-dimensional biological information is created in combination, and the created three-dimensional biological information is transmitted to the biological information management subsystem via the network.

  In the biometric information management subsystem, the management program performs identity verification by comparing the three-dimensional biometric information received from the biometric information matching subsystem with the pre-registered three-dimensional biometric information.

  In the following, based on the above description, a detailed explanation will be given focusing on the position measurement corresponding to the type of biometric feature point.

First, fingerprints will be described.
Types of feature points related to fingerprints include a central point that represents the center of the fingerprint pattern, a triangle that represents a gathering from three directions, an endpoint that represents the dead end of the fingerprint convex pattern, and a branch point that represents the branching of the fingerprint convex pattern. There is.

  In the present invention, the coordinate system is set based on the center point of the fingerprint pattern, and when measuring the coordinates of the target biological feature point using the latitude and longitude, the fingerprint on the lower plane of the finger stretched horizontally is used. The center point of is the reference point of the lower plane composed of width and depth, and the side plane is extended perpendicularly to the lower plane from the reference point of the lower plane and the line drawn to half the height of the finger The point where the lines intersect is set as the reference point of the side plane.

This process combines two-dimensional information of feature points acquired from the lower plane of the finger and two-dimensional information of feature points acquired from the side plane of the finger into three-dimensional information, but the two planes are the center of the fingerprint pattern. Are shared as coordinate axes, so the two measurement results are related to each other.
Therefore, the three-dimensional information created by using this process can maintain a higher level of security than the two-dimensional information that can be easily replicated. Further, since the processing is a combination of two-dimensional information, position information can be calculated in less time than three-dimensional information, and its practicality is high.
Next, the finger vein will be described.

  As described above, the vein pattern formed by the branch point of the blood vessel that is the feature point and the blood vessel that connects the branch point has more three-dimensional properties than the fingerprint, and it has vertical, horizontal, and height points. It is rich in change.

Therefore, in the present invention, the point at which a line extending perpendicularly to the lens from the focal point of two photographing machines installed with the center of the coordinates on the same plane intersects is set as a reference position in the three-dimensional space, and two orthogonal Two planes are used to measure the position of the target biometric feature point.
Regarding finger veins, it can be handled as a complete cubic model consisting of vein patterns formed by blood vessel branch points inside the finger and blood vessels connecting the branch points. A process in which two-dimensional information recognized from the lower plane of the finger and two-dimensional information recognized from the side plane of the finger may be applied.

Below, the general matter regarding this invention is demonstrated supplementarily.
Regarding the use of the three-dimensional biometric information in the present invention, biometric information master data may be stored in a biometric information collating subsystem, and biometric information may be collated alone as a biometric information collating device.

  Further, the present invention targets biometric information that can be handled in three dimensions, and includes, for example, fingerprints, finger veins, etc., but is not limited thereto, and includes wrists, ankles, toes, and others. Including. Further, a part of the function performed by the recognition program in the present invention, for example, two-dimensional biological information collected from the lower plane of the finger and two-dimensional biological information collected from the side plane of the finger are configured as three-dimensional biological information The functions to be performed may be shared by other devices or systems that are not processors.

The device for measuring the position of the biometric feature point may be any device having a function capable of measuring the position of the biometric feature point. For example, a camera using visible light, a camera using near infrared, a fingerprint sensor However, it is not limited to these.
In addition, by using 3D biological information created by combining the feature points of multiple 2D biological information used to identify individuals using 2D biological information such as fingerprints as usual, You may improve the authenticity of the used two-dimensional biological information.

  In addition, the biometric information may be handled as a pattern formed by the coordinates of a plurality of feature points as well as being handled as the coordinates of the feature points measured from the reference point, and identity verification may be performed based on this pattern.

  In the present invention, for example, when a living body is recognized as a cube composed of two orthogonal surfaces, a combination of two-dimensional information recognized from one direction and two-dimensional information recognized from the other direction, The position of the living body is measured by forming a three-dimensional environment composed of two orthogonal surfaces, but any value from two to six surfaces may be used. The storage device may be any device having a function of holding data, and includes, for example, a memory, a magnetic disk, a semiconductor storage device, and the like.

  In the biometric information verification subsystem, for example, when the biometric information recognition apparatus collects feature points of a fingerprint, the order may be that the side plane of the finger is first and the lower plane of the finger is after.

  Furthermore, the following aspects are also included in the present invention. In the present invention, even when the biometric information is randomly selected from a plurality of biometric information set to increase the strictness of the personal authentication, the test pattern is set, and the three-dimensional information is handled. By limiting, it was possible to cope with a short calculation time.

  The biometric information collation system according to the present invention is composed of a biometric information collation subsystem and a biometric information management subsystem, and the biometric information read from the biometric information recognition device of the biometric information collation subsystem is transmitted via the network to the biometric information management sub-system. User authentication is performed by checking the biometric information transmitted to the system and registered in the biometric information management subsystem.

  In the biometric information management subsystem according to the present invention, a projection image on a plane composed of vertical and horizontal planes is created using two-dimensional information about feature points acquired by placing the lower surface of the finger on the fingerprint sensor, Using the two-dimensional information about the feature points acquired by bonding the side of the image to the fingerprint sensor, create a projection elephant on the surface composed of the horizontal and height, and Three-dimensional biological information that combines projected elephants composed of width and height is created and registered in advance.

  When the user starts the operation of the biometric information verification subsystem, the biometric information verification subsystem recognition program operates to request the biometric information management subsystem to select a test pattern to be used. In the information management subsystem, the management program randomly selects an inspection pattern and transmits the selected inspection pattern to the biometric information matching subsystem via the network.

  In the biometric information matching subsystem, the biometric information recognition apparatus first collects feature points on the lower surface of the finger as two-dimensional position information, and then collects feature points as two-dimensional information also from the side of the finger.

Next, in the biometric information matching subsystem, the recognition program projects two-dimensional information about the feature points collected from the lower surface of the finger onto a plane composed of vertical and horizontal according to the inspection pattern received from the biometric information management subsystem. create an image, to create a projected image of the surface formed from the side and height using a two-dimensional information about the feature points taken from the side of the finger, further longitudinal projection image composed of horizontal and transverse 3D biological information is created by combining projected images composed of height and height, and the created 3D biological information is transmitted to the biological information management subsystem via the network.
In the biometric information management subsystem, the management program compares the three-dimensional biometric information received from the biometric information matching subsystem with the pre-registered three-dimensional biometric information, thereby performing personal authentication.

Hereinafter, the position information of feature points will be described in detail.
Types of feature points related to fingerprints include a central point that represents the center of the fingerprint pattern, a triangle that represents a gathering from three directions, an endpoint that represents the dead end of the fingerprint convex pattern, and a branch point that represents the branching of the fingerprint convex pattern. However, handling these feature points as three-dimensional information means that all feature points are handled as position information having a width, a depth, and a height.
However, for example, in the case of fingerprint information, it is difficult to recognize feature points as complete three-dimensional position information.

  Therefore, in the present invention, for example, with respect to a fingerprint, the center point of the fingerprint on the lower surface of the finger is used as a reference plane for width and depth, and an intermediate point set between the center point of the fingerprint on the lower surface of the finger and the upper surface of the finger is a high point. As a reference plane for height, one point where two reference planes overlap was set as the center point of coordinates.

  For the feature points on the lower surface of the finger, the distance from the center point of the coordinate to the target feature point is measured as the width and depth, respectively, and the height of all feature points is the length from the center point to the lower surface of the finger. Say it.

  For the feature points on the finger side, the distance from the center point of the coordinate to the target feature point is measured as depth and height, and the width of all feature points is from the center point of the coordinate to the side of the finger. And the length.

  For example, with regard to fingerprints, it is assumed that the finger is a rectangular parallelepiped, and the distance from the center point of the coordinate axis in which the position information of the feature point recognized from the horizontal plane and the position information of the feature point recognized from the vertical plane are set in a pseudo manner To grasp.

  In addition, the three-dimensional biological information in one embodiment of the present invention is a pseudo three-dimensional method by projecting biological feature points on at least two adjacent surfaces among six surfaces constituting a rectangular parallelepiped. Information should be constructed.

  In the present invention, since the three-dimensional information is created using the two-dimensional information of the feature points acquired from the lower surface of the finger and the two-dimensional information of the feature points acquired from the side surface of the finger, highly accurate three-dimensional information is obtained. However, since it is three-dimensional information based on the center point of the coordinate axis, a higher security level can be maintained as compared with two-dimensional information that can be easily replicated.

  Moreover, since it is not complete three-dimensional biological information, position information can be calculated with less calculation processing time, and its practicality is high.

  In addition, finger veins can be handled as a complete cubic model composed of vein patterns formed by the branch points of blood vessels inside the fingers and blood vessels connecting the branch points. It may be handled as pseudo three-dimensional information in which two-dimensional information recognized from the lower surface of the finger and two-dimensional information recognized from the side surface of the finger are combined.

  In the present invention, a test pattern for randomly selecting biometric information from a plurality of biometric information is created in the biometric information management subsystem, and the created test pattern is transmitted to the biometric information matching subsystem. Collects biological information of the person to be inspected according to the received test pattern, sends the collected biological information to the biological information management subsystem, and collates the biological information received by the biological information management subsystem with the biological information registered in advance Therefore, it is possible to cope with replacement or forgery of biological information in the transmission process.

  In addition, when only fixed biometric information is used, there is a possibility that biometric information stored in a device counterfeited by the biometric information recognition device may be read. However, according to the biometric matching system of the present invention, it is higher. A level of security can be maintained.

  Next, after recognizing the feature point selected according to the type of living body as position information composed of vertical, horizontal, and height, the latitude, longitude, altitude, which can further identify the feature point from the center point of the coordinate axis, The processing treated as a distance will be described.

  For example, a finger vein has a feature that it is easier to grasp a position in three dimensions than a planar fingerprint. That is, the vein pattern formed by the branch point of the blood vessel that is the feature point and the blood vessel that connects the branch point inherently has a three-dimensional property, and in terms of vertical, horizontal, and height compared to the fingerprint, It is rich in change.

  In the present invention, in the case of a finger vein, the finger vein is photographed by rotating the near-infrared light source and the photographing device at right angles to the long axis of the finger, and the photographed image is image-processed. Three-dimensional biological information about the points was extracted.

  In the present invention, for example, after recognizing a branch point or vein pattern as a vein feature point as position information composed of vertical, horizontal, and height, the feature point can be further specified from the center point of the coordinate axis. Measures the latitude, longitude, altitude, and distance, and based on the measured latitude, longitude, altitude, and distance, compares the collected 3D biometric information with the prestored 3D biometric information to achieve identity authentication. ing.

  In addition, in the biometric information collation system according to the present invention, the biometric information management subsystem and the biometric information collation subsystem each have a pair of encryptions configured with a password that is used only once for cryptographic processing and a management number assigned to the password. Store the table in advance.

  First, when the user operates the biometric information verification subsystem, the recognition program encrypts the biometric information extracted from the biometric information read from the biometric information recognition device using the password of the encryption table. The encrypted biometric information and password management number are transmitted to the biometric information management subsystem via the network.

  Next, in the biometric information management subsystem, the management program uses the password management number received from the biometric information verification subsystem to extract the corresponding password from the encryption table stored in advance, and the extracted password Is used to decode the biometric information received from the biometric information matching subsystem.

  By using a one-time password, in the present invention, the biological information flowing through the network is changed every time, so that a higher level of security can be maintained with respect to theft, replacement, and forgery than those that do not.

  Further, regarding the use of the three-dimensional biological information in the present invention, the biological information master data may be stored in the biological information verification subsystem, and the biological information verification may be performed independently as a biological information verification device.

  In the present invention, the position of the feature point is expressed by latitude, longitude, altitude, and distance with the center point of the coordinate axis as a reference point. This is for ease of calculation processing, for example, The reference plane may be set, and the position of the feature point may be expressed by the distance from the set reference planes.

  In the case of a biometric matching system that uses only two-dimensional biometric information, for example, a fingerprint can be copied relatively easily using gelatin, but the biometric matching system according to the present invention uses three-dimensional biometric information. The possibility that the living body itself is replicated is lower, and as a result, the safety of the entire system is improved.

  Further, the present invention targets biometric information that can be handled in three dimensions, and includes, for example, fingerprints, finger veins, etc., but is not limited thereto, and includes wrists, ankles, toes, and others. Including.

In addition, a part of the functions performed by the recognition program according to the present invention, for example, the function of configuring two-dimensional biological information collected from the lower surface of the finger and two-dimensional biological information collected from the side surface of the finger as three-dimensional biological information May be shared by other devices or systems that are not processors.
In the present invention, two-dimensional information that recognizes a living body from one direction and two-dimensional information that is recognized from another direction are combined and explained using a three-dimensional structure composed of two surfaces. Any value from 2 to 6 may be used for.

  In addition, by using 3D biological information created by combining the feature points of multiple 2D biological information used to identify individuals using 2D biological information such as fingerprints as usual, You may improve the authenticity of the used two-dimensional biological information.

  The storage device may be any device having a function of holding data, and includes, for example, a memory, a magnetic disk, a semiconductor storage device, and the like.

  Further, in the biometric information matching subsystem, when the biometric information recognition apparatus, for example, collects fingerprint feature points, the order of the finger side may be first and the lower surface of the finger may be rearward.

  According to the present invention, since it is difficult to forge a living body by using three-dimensional biological information, the biological information matching device and the biological information matching system are compared with those using two-dimensional biological information. , Can keep a higher security level.

Hereinafter, an embodiment of the present invention will be described using an example in which three-dimensional biological information, a randomly generated inspection pattern, and encryption processing using a one-time password are combined.
In this embodiment, in order to ensure the security of data exchanged via the network, first, three-dimensional biometric information as master data is registered in the biometric information management subsystem and randomly generated test patterns And the one-time password are registered in advance in the biometric information management subsystem and the biometric information verification subsystem.
Next, when the user operates the biometric information collating subsystem, the biometric information collating subsystem collects the user's biometric information and at the same time requests the biometric information management subsystem to select a test pattern.

  Then, the requested biometric information management system randomly selects one from a plurality of test patterns, replies the selected test pattern to the biometric information verification subsystem, and the received biometric information verification subsystem is Extracts feature points of interest from biometric information collected based on the inspection pattern, encrypts them using a randomly extracted one-time password, and manages the biometric information feature points together with the password management number. Send to subsystem.

  Next, the biometric information management subsystem uses the password management number received from the biometric information verification subsystem, extracts the corresponding password from the encryption table stored in advance, and uses the extracted password. The biometric information feature point received from the biometric information verification subsystem is decoded and compared with the registered master three-dimensional biometric information to authenticate the person.

  FIG. 1 is a configuration diagram showing a configuration of a biometric information matching system according to an embodiment of the present invention. In the figure, the biometric information matching system includes a biometric information matching subsystem 100 and a biological information management subsystem 200, and the biological information matching subsystem 100 and the biological information management system 200 are connected by a network 10.

First, the biometric information verification subsystem 100 will be described.
The biometric information matching subsystem 100 includes a biometric information recognition device 101, a sensor 102, a processor 103, and a storage device 105 for reading a user's biometric information.
Inside the processor 103, a recognition program 104 operates.
The storage device 105 stores an encryption table 106, an inspection pattern table 107, biometric information 108 read from the biometric information recognition measure 101, and encrypted biometric information 109.

Next, the biological information management subsystem 200 will be described.
The biological information management subsystem 200 includes a server 201 and a storage device 203.
In addition, the management program 202 operates inside the server 201.
The storage device 203 stores an encryption table 204, a pattern table 205, biometric information master data 206, encrypted biometric information 207, and decrypted biometric information 208.

  FIG. 2 shows an example of data setting items stored in the storage device 105 of the biometric information matching subsystem 100, and FIG. 3 shows an example of data setting items stored in the biometric information management subsystem 200. FIG.

First, data stored in the storage device of the biometric information verification subsystem 100 will be described.
In the encryption table 106, a password management number, a password, a valid period, a used category, and a creation date are set as items. The used category is a category set to prevent reuse. The inspection pattern table 107 includes the pattern number, the number of surfaces used, the type of center point / latitude / longitude / altitude, the type of feature point number a / latitude / longitude / altitude / distance, the type of feature point number b, latitude / longitude, From altitude / distance to feature point number x type / latitude / longitude / altitude / distance and creation date are set as items (Note that latitude, longitude, and altitude in this application are It is not a coordinate but a general one that shows coordinates).

In addition, the number of surfaces used is used to specify how many of the surfaces orthogonal to each other are used to calculate the coordinates in three dimensions. Values between two and six surfaces are used. .
For example, when three planes are specified, the coordinates of the target feature point need only be calculated two times, and the calculation time can be shortened and a considerable level of security can be achieved compared to calculating the three-dimensional coordinates. Can hold. The feature point number a, the feature point number b, and the feature point number x are numbers for specifying the feature point designated as the inspection target by the inspection pattern number.
Also, the type is a type of feature point that differs for each biometric information.For example, in the case of a fingerprint, the center point representing the center of the fingerprint pattern, the triangle representing the gathering from three directions, and the dead end of the fingerprint convex pattern. The end point to be represented, the branch point representing the branching of the pattern of the fingerprint convex portion, and the like correspond to this.

  The biometric information 108 includes the biometric information management number, the number of surfaces used, the type of center point / latitude / longitude / altitude, the type of feature point number a / latitude / longitude / altitude / distance, the type of feature point number b, latitude, Items from the longitude / altitude / distance to the type / latitude / longitude / altitude / distance of the feature point number x and the creation date are set as items.

  In addition, in the latitude, longitude, altitude, and distance of the feature point number a of the biological information 108, position information related to the feature point of the biological information indicated by the feature point number a of the inspection pattern table 107 is stored.

  The encrypted biometric information 109 includes the biometric information management number, the number of used surfaces, the latitude / longitude / altitude of the center point, the type / latitude / longitude / altitude / distance of the feature point number, the type / latitude of the feature point number b -Items from the longitude / altitude / distance to the type of feature point number x / latitude / longitude / altitude / distance and creation date are set as items.

  Next, data stored in the storage device of the biological information management subsystem 200 will be described. In the encryption table 204, a password management number, a password, a valid period, a used category, and a creation date are set as items.

  The inspection pattern table 205 includes the pattern number, the number of surfaces used, the type of center point, latitude / longitude / altitude, the type of feature point number a / latitude / longitude / altitude / distance, the type of feature point number b, latitude / longitude・ From altitude / distance to feature point number x type / latitude / longitude / altitude / distance and creation date are set as items. The biometric information master data 206 includes the biometric information management number, the number of surfaces used, the type of center point / latitude / longitude / altitude, the type of feature point number 1 / latitude / longitude / altitude / distance, the type of feature point number 2 Items from the latitude / longitude / altitude / distance to the type / latitude / longitude / altitude / distance of the feature point number n and the creation date are set as items.

The biometric information master data 206 is data stored in advance in the storage device 203 in order to collate with the three-dimensional biometric information inquired from the biometric information collation subsystem 100 to the biometric information management subsystem 200.
Encrypted biometric information 206 includes biometric information management number, number of used surfaces, center point type / latitude / longitude / altitude, feature point number a type / latitude / longitude / altitude / distance, feature point number b type -The items from latitude / longitude / altitude / distance to the type of feature point number x / latitude / longitude / altitude / distance and creation date are set as items. The decrypted biometric information 207 includes the biometric information management number, the number of used surfaces, the type of center point / latitude / longitude / altitude, the type of feature point number a / latitude / longitude / altitude / distance, the type of feature point number b, The items from the latitude / longitude / altitude / distance to the type / latitude / longitude / altitude / distance of the feature point number x and the creation date are set as items.

Next, the operation in this embodiment will be described.
FIG. 4 is a flowchart necessary for performing encryption table registration processing, FIG. 5 is a flowchart necessary for performing search pattern table registration processing, FIG. 6 is a flowchart necessary for performing fingerprint registration processing, and FIG. Is a flowchart necessary for performing finger vein pattern registration processing, FIG. 8 is a flowchart necessary for performing fingerprint collation processing, and FIG. 9 is a flowchart necessary for performing finger vein collation processing.

  In FIG. 4, the management program 202 of the biometric information management subsystem 200 creates a plurality of encryption tables 204 that include consecutive password management numbers, randomly generated passwords, validity periods, used categories, and creation dates. Then, the created encryption table 204 is stored in the storage device 203 (S101).

Next, the created encryption table 204 is transmitted to the biometric information verification subsystem (S102).
The recognition program 104 of the biometric information verification subsystem 100 receives the encryption table 204 from the biometric information management subsystem 200 (S103), and stores the received encryption table 204 as the encryption table 106 in the storage device 105 (S104).

  In FIG. 5, the management program 202 of the biometric information management subsystem 200 includes an inspection pattern table composed of continuous pattern numbers, items from randomly generated feature point numbers a to feature point numbers x, and creation dates. A plurality of 205 are created (S110), and the created inspection pattern table 205 is stored in the storage device 203 (S111).

  Next, the created inspection pattern table 205 is transmitted to the biometric information verification subsystem (S112). The recognition program 104 of the biometric information matching subsystem 100 receives the test pattern table 205 from the biometric information management subsystem 200 (S113), and stores the received test pattern table 205 in the storage device 105 as the test pattern table 107 (S114). ).

  With regard to FIG. 6, first, a fingerprint is taken as an example in the registration process of three-dimensional biometric information that combines two-dimensional position information of feature points recognized from one direction and two-dimensional position information of feature points recognized from another direction. explain.

  In FIG. 6, the biometric information recognition apparatus 101 of the biometric information matching subsystem 100 collects two-dimensional information related to the feature points obtained by placing the lower surface of the finger on the fingerprint sensor (S120), and transmits it to the processor 103. (S121).

  Next, the biometric information recognition apparatus 101 of the biometric information matching subsystem 100 collects two-dimensional information related to the feature points acquired by adhering the side surface of the finger to the fingerprint sensor (S122) and transmits it to the processor 103 (S123). ). Next, in the processor 103, the recognition program 104 performs data processing on the two-dimensional information regarding the feature points on the lower surface of the finger received from the biological information recognition apparatus 101 (S124), and a system determined for each feature point. Then, the feature point number and the latitude, longitude, altitude, and distance with the center point of the coordinates as the reference point are given to create three-dimensional biological information (S125).

  Next, in the processor 103, the recognition program 104 reads the encryption table 106 stored in the storage device 105 (S126), and uses the password management number and password of the read encryption table, and features on the lower surface of the finger Encrypt 3D biometric information and 3D biometric information on finger side feature points (S127), and send the encrypted 3D biometric information and password management number via the network 10 to the biometric information management subsystem 200 server It is transmitted to 201 (S128).

  Next, in the server 201, the management program 202 receives the encrypted three-dimensional biometric information and the password management number (S129), and uses the password management number as a key to store the encryption table 204 stored in the storage device 203. The password is read (S130), and the read password is used to decode the three-dimensional biological information related to the feature point on the lower surface of the finger and the three-dimensional biological information related to the feature point on the side surface of the finger (S131). The three-dimensional biological information relating to the feature points and the three-dimensional biological information relating to the feature points on the side surface of the finger are registered in the storage device 203 as the biological information master data 206 (S132).

  In FIG. 7, the recognition program 104 of the biometric information matching subsystem 100 operates to request the biometric information management subsystem to select the test pattern to be used (S140). The management program 202 randomly selects an inspection pattern, and transmits the selected inspection pattern number to the biometric information matching subsystem 100 via the network 10 (S141). In the processor 103 of the biometric information matching subsystem 100, the recognition program 104 receives the test pattern number from the biometric information management subsystem 200 via the network 10 (S142).

The biometric information recognition apparatus 101 of the biometric information matching subsystem 100 collects two-dimensional information related to the feature points obtained by placing the lower surface of the finger on the fingerprint sensor and transmits it to the processor 103 (S143).
Next, the biometric information recognition apparatus 101 of the biometric information matching subsystem 100 collects two-dimensional information regarding the feature points acquired by bonding the side surface of the finger to the fingerprint sensor, and transmits the two-dimensional information to the processor 103 (S144). Next, in the processor 103, the recognition program 104 performs data processing on the two-dimensional information regarding the feature points on the lower surface of the finger received from the biological information recognition apparatus 101 (S145), and a system determined for each feature point. The three-dimensional biological information is created by assigning the latitude, longitude, altitude, and distance with the feature point number and the coordinate center point as the reference point according to (S146).

  Next, in the processor 103, the recognition program 104 reads the inspection pattern table 107 stored in the storage device 105 using the received inspection pattern number as a key (S147), and the read inspection pattern table is described. A point number is extracted (S148).

  Next, in the processor 103, the recognition program 104 has the features described in the inspection pattern table read out from the three-dimensional biological information about the feature points on the lower surface of the finger and the three-dimensional biological information about the feature points on the side surface of the finger. The latitude, longitude, altitude, and distance corresponding to the point number are extracted (S149).

  Next, in the processor 103, the recognition program 104 randomly extracts the password management number and password of the encryption table 106 stored in the storage device 105 (S150), and uses all the feature point numbers using the extracted password. The latitude, longitude, altitude, and distance are encrypted (S151), and the encrypted three-dimensional biological information, biological information management number, and password management number are transmitted to the server 201 of the biological information management subsystem 200 via the network 10. (S152).

  Next, in the server 201, the management program 202 receives the encrypted three-dimensional biometric information and the password management number (S153), and stores the encrypted table 204 stored in the storage device 203 using the password management number as a key. Read the password (S154), use the read password to decrypt the latitude, longitude, altitude and distance of the feature point number of the 3D biological information (S155), and store the decrypted biometric management number and feature point number as keys The latitude, longitude, altitude, and distance of the feature point number described as items of the biometric information master data 206 registered in the device 203 are read (S156).

  Then, the latitude, longitude, altitude and distance of the feature point number described as the items of the biometric information master data 206 are compared with the latitude, longitude, altitude and distance of the feature point number received from the biometric information matching subsystem 100 ( (S157), if the contents of the compared items match, send a message clearly indicating that the person has been approved to the biometric information matching subsystem 100 (S158), and if the compared items do not match, A message clearly indicating the denial is transmitted to the biometric information matching subsystem 100 (S159).

  The present invention can be applied to a biometric information matching apparatus and a biometric information matching system that performs personal authentication using a network.

It is the block diagram which showed the structure of the biometric information collation system in one Embodiment of this invention. It is a data format in the biometric information collation subsystem in one embodiment of the present invention. It is a data format in the biometric information management system in one Embodiment of this invention. It is a flowchart which shows operation | movement of the encryption table registration processing program in one embodiment of this invention. It is a flowchart which shows operation | movement of the search pattern table registration processing program in one embodiment of this invention. It is a flowchart which shows operation | movement of the program required in order to perform the fingerprint registration process in one embodiment of this invention. It is a flowchart which shows operation | movement of the program required in order to perform the fingerprint collation process in one embodiment of this invention.

Explanation of symbols

10: Network that connects the biometric information verification subsystem and the biometric information management subsystem, 100: Biometric information verification subsystem, 101: Biometric information recognition device, 102: Sensor, 103: Processor, 104: Recognition program, 105: Storage device , 106: encryption table, 107: inspection pattern table, 108: biometric information, 109: encrypted biometric information, 200: biometric information management subsystem, 201: server, 202: management program, 203: storage device, 204: encryption Table, 205: inspection pattern table, 206: biometric information master data, 207: encrypted biometric information, 208: decrypted biometric information.

Claims (5)

In the biometric information matching system in which the biometric information management subsystem and the biometric information matching subsystem are connected via a network and authenticate the user using the biological information.
The biological information management subsystem has a storage device for registering three-dimensional biological information related to a user's biological body,
The biometric information verification subsystem includes:
User's biometric information, the coordinate information of the feature points in the biometric data from the first direction is the direction of the lower surface of the living body as a first two-dimensional information, the biological perpendicular to said first direction Means for collecting the coordinate information of the feature points of the biological information from the second direction that is the direction of the side surface as second two-dimensional information;
The first two-dimensional information is created as a first projection image on a plane composed of length and width, and the second two-dimensional information is projected onto a plane composed of width and height. means to create an image, for generating the first and second projected image by combining the three-dimensional biometric information which is a combination of the first and second two-dimensional information,
Means for transmitting the generated three-dimensional biological information to the biological information management subsystem via a network;
The biological information management subsystem includes:
By providing means for authenticating the person by comparing the transmitted three-dimensional biological information with the three-dimensional biological information registered in the storage device,
A biometric information matching system that performs personal authentication using three-dimensional biometric information generated by combining a plurality of two-dimensional information related to a biometric. The biometric information matching subsystem according to claim 1,
The storage device registers, as the three-dimensional biological information, the reference position of the coordinate axis corresponding to the type of the biological information and the positional information indicating the positional relationship between the feature points indicating the characteristics of the biological information,
The means for collecting collects the reference position and feature point position of the living body as the first and second two-dimensional information,
The generating means calculates the latitude and longitude of the feature point on each of the surface composed of the vertical and horizontal and the surface composed of the horizontal and height from the collected reference position and feature point position. Including the three-dimensional biological information as the three-dimensional biological information, including three types of information including a distance from the reference position to the feature point position or an altitude from the height reference plane. A biometric information matching system characterized by In biometric authentication system according to claim 1 or 2,
The biometric information matching system , wherein the biometric information is finger vein information of the user. The biological information matching system according to claim 3,
The biometric information matching system , wherein the feature point is a branch point of a finger vein . The biological information matching system according to any one of claims 2 to 4,
The biometric information matching system, wherein the reference position is a position set based on a center position of a coordinate axis of the two-dimensional information.

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