WO2020110536A1 - Dispositif de vérification et procédé de vérification - Google Patents

Dispositif de vérification et procédé de vérification Download PDF

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Publication number
WO2020110536A1
WO2020110536A1 PCT/JP2019/041885 JP2019041885W WO2020110536A1 WO 2020110536 A1 WO2020110536 A1 WO 2020110536A1 JP 2019041885 W JP2019041885 W JP 2019041885W WO 2020110536 A1 WO2020110536 A1 WO 2020110536A1
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WIPO (PCT)
Prior art keywords
image
verification
data
face
feature value
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PCT/JP2019/041885
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English (en)
Japanese (ja)
Inventor
一順 田島
陽志 野崎
尚生 坂崎
陽介 加賀
繁幸 根本
冠 中前
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株式会社日立製作所
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Publication of WO2020110536A1 publication Critical patent/WO2020110536A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials

Definitions

  • the present invention relates to a verification device and a verification method.
  • ID cards are issued by printing face information and attribute information such as names on the face of IC cards and plastic cards.
  • attribute information such as names on the face of IC cards and plastic cards.
  • mobile devices such as smartphones, there is a demand for proof of identity not by a card-like identification card but by a mobile device that is always carried.
  • the identification card When the identification card is implemented on a mobile device, for example, a device that verifies the data through communication when certifying the identity by digitizing attribute information such as a facial photograph and name (hereinafter referred to as a verification device) ), and the verification device mechanically verifies the authenticity of the identification data.
  • a verification device a device that verifies the data through communication when certifying the identity by digitizing attribute information such as a facial photograph and name
  • the verification device mechanically verifies the authenticity of the identification data.
  • the identification data is displayed on a display of a mobile device and presented, and information is exchanged with the verification device by visual inspection or by photographing with the verification device to verify the authenticity of the identification card.
  • the owner of the mobile device may be a citizen, or the owner of the verification device may be different organizations. Therefore, it is assumed that the functions of the mobile device and the verification device have variations, and a verification method corresponding to the functions of the mobile device and the verification device is required.
  • the image of the face photograph and the two-dimensional code in which the data of the face photograph is embedded is used as the identification card to prove the identity.
  • a technique has been proposed in which a face photograph is restored from a two-dimensional code and compared with the original face photograph to determine authenticity (see Patent Document 1).
  • the amount of data to be sent becomes large when the identification card is mounted on the mobile device and exchanged with the verification device. Therefore, depending on the functions of the mobile device and the verification device, there is a problem that a verification method for transmitting and receiving a large amount of data cannot be selected and cannot be sent.
  • Patent Document 1 cited as a method of displaying and presenting on a display of a mobile device, since the facial photograph data itself is embedded in the two-dimensional code, there is a problem that the two-dimensional code becomes large.
  • An object of the present invention is to verify the authenticity of acquired data such as identification data with a small amount of data in a verification device.
  • a verification device is a verification device that is connected to an image capturing device and a data receiving device, and the verification device includes a signature verification unit and an image verification unit, and a first process or a second process.
  • the signature verification unit extracts an identifier image and a face image from an acquired image acquired by capturing a screen of a terminal and uses the identifier image as the identifier image.
  • the identifier image is verified from the included electronic signature
  • the image verification unit compares the first feature value information extracted from the face image with the second feature value information included in the identifier image, and The authenticity of the face image is verified, and in the second process, the signature verification unit verifies the electronic signature from the acquired data received and acquired from the terminal, and the image verification unit determines the acquired data. It is characterized in that the authenticity of the face image is verified by comparing the first feature value information extracted from the face image included in 1) with the second feature value information included in the acquired data.
  • a verification method is a verification method using a verification device connected to an image capturing device and a data receiving device, the verification method including a signature verification step and an image verification step.
  • the signature verification step the identifier image and the face image are extracted from the acquired image acquired by capturing the screen of the terminal. And verify the identifier image from the electronic signature included in the identifier image, the image verification step, the first feature value information extracted from the face image, and second feature value information included in the identifier image, To verify the authenticity of the face image, and in the second process, the signature verification step verifies the electronic signature from the acquired data received and acquired from the terminal, and the image verification step. Is characterized by verifying the authenticity of the face image by comparing the first feature value information extracted from the face image included in the acquired data with the second feature value information included in the acquired data. And
  • the verification device can verify the authenticity of acquired data such as identification data with a small amount of data.
  • FIG. 1 is a diagram showing an example of a system configuration of Example 1. It is a figure showing an example of hardware constitutions of an issuing device, a verification device, and a smart phone. It is a sequence diagram which shows the issuing process procedure of a digital identification card.
  • FIG. 6 is a sequence diagram showing a procedure of a method of displaying on a display of a mobile device in a process of verifying a digital identification certificate according to the first embodiment.
  • FIG. 6 is a sequence diagram showing a procedure in a method of verifying the data transmitted and received via communication in the verification process of the digital identification certificate according to the first embodiment.
  • FIG. 5 is a diagram showing a verification result of the verification device in the first embodiment.
  • FIG. 3 is a diagram (a difference from FIG.
  • FIG. 7 is a sequence diagram showing a digital identification certificate verification processing procedure and a digital identification certificate holder authentication processing procedure according to the second embodiment.
  • FIG. 9 is a diagram (a difference from FIG. 6) displaying an authentication result of the verification device in the second embodiment.
  • FIG. 1 is a diagram illustrating an example of the overall configuration of the digital identification system 1 according to the first embodiment. In this figure, an example of the functional configuration of each computer that constitutes the digital identification system 1 is shown along with the overall configuration.
  • the digital identification system 1 shown in FIG. 1 has an issuing device 10 and a verification device 20.
  • the issuing device 10 generates digital identification data 305 and digital identification (image data) 301 for the smartphone 30.
  • the verification device 20 acquires the image of the digital identification card 301 displayed on the display of the smartphone 30 or the identification card data 305 transmitted from the smartphone 30, and the digital identification card 301 presented from the identification card data 301. Alternatively, the authenticity of the identification certificate data 305 is determined.
  • the issuing device 10 manages a signature key SK104 for generating an electronic signature and a common key K105 between the verification device 20 and a feature value extracting function 106 for extracting a feature value from face photograph data.
  • the two-dimensional code generation function 102 for generating a two-dimensional code, the facial photograph data 302, the attribute information 303 such as a name, and the two-dimensional code 304. It has an identification card forming function 101 for forming a digital identification card (image data) 301.
  • the verification device 20 is connected to the image capturing device 21.
  • the verification device 20 manages a verification key PK204 for verifying an electronic signature and a common key K205 of the issuing device 10, and a data reading function 201 for reading an image of the digital identification card 301 displayed on the display of the smartphone 30.
  • a data receiving function for example, a data receiving device 22 that receives the digital identification data 305 transmitted from the smartphone 30, and a two-dimensional code part 304 that extracts the two-dimensional code portion 304 from the read image and decodes the two-dimensional code.
  • a matching function 207 for comparing and verifying the feature value embedded in the two-dimensional code and the facial photograph image 302 included in the read image of the digital identification card 301, and a screen display according to the verification result.
  • It has a verification result processing function 208 for performing or instructing opening/closing of a gate for entering/leaving a room.
  • the data receiving function 22 may not be provided depending on the verification device 20.
  • the smartphone 30 installs and stores the corresponding digital identification card (image data) 301 and digital identification card data 305 obtained through network or media transfer, and displays the digital identification card 301 as necessary. And a function of transmitting the digital identification data 305 by wireless LAN, BlueTooth (registered trademark) communication, NFC communication, or the like. The function of transmitting data may not be provided depending on the smartphone.
  • the issuing device 10, the verification device 20, and the smartphone 30 having such functions can be realized by a general information processing device 40 as illustrated in FIG.
  • the function 203, the character recognition function 206, the matching function 207, and the verification result processing function 208 can be realized as a computer program executed by the CPU 405 such as a CPU (CENTRAL PROCESSING UNIT).
  • Such a computer program can be stored and held in a storage device 404 such as a hard disk in advance, or can be distributed from a network and expanded on the memory 403 for use.
  • an instruction from a user who uses the digital identification card system 1 is input by an input device 401 such as a keyboard, a mouse, or a touch panel that receives an input, and a processing result by the instruction is a liquid crystal display device or an organic device. It is output by an output device 402 such as an EL (ELECTRO LUMINESCENCE) display.
  • an input device 401 such as a keyboard, a mouse, or a touch panel that receives an input
  • a processing result by the instruction is a liquid crystal display device or an organic device. It is output by an output device 402 such as an EL (ELECTRO LUMINESCENCE) display.
  • These devices such as the issuing device 10, the verification device 20, and the smartphone 30 can be configured on the information processing device 40 connected by an internal communication line (hereinafter referred to as a bus) 406 such as a bus.
  • a bus an internal communication line
  • the image capturing device 21 connected to the verification device 20 is realized by devices such as a digital camera, a WEB camera, and a scanner.
  • the data reception function 22 connected to the verification device 20 is realized by a communication function such as wireless LAN, BlueTooth (registered trademark) communication, NFC communication, or the like.
  • FIG. 3 is a sequence diagram showing a procedure for issuing the digital identification card 301 according to the first embodiment.
  • the facial photograph data 302 of the person who is the holder of the digital identification card 301 is input to the issuing apparatus 10, and the issuing apparatus 10 can uniquely identify the facial photograph from the facial photograph data 302 by the feature value extraction function 106.
  • a feature value that is a relatively small amount of data (such as "feature point position of face such as eyes, nose, mouth edge” or "image cut out of eyes") is extracted (step S101).
  • the issuing device 10 uses the cryptographic processing function 103 to encrypt the characteristic value with the common key K105 with the verification device 20 (step S102).
  • the attribute information 303 such as the name of the person who is the holder of the digital identification certificate 301 is input to the issuing device 10, and the issuing device 10 concatenates the attribute information 303 with the encrypted characteristic value (step S103). ).
  • the issuing device 10 calculates an electronic signature value with the signature key SK104 of the issuing device 10 for the data obtained by concatenating the encrypted characteristic value and the attribute information 303, and concatenates the encrypted characteristic value and the attribute information 303. It is added to the data (step S104).
  • the combination of the face photograph data 302, the encrypted feature value, the attribute information, and the electronic signature value is referred to as digital certificate data 305.
  • the two-dimensional code generation function 102 generates the two-dimensional code 304 by inputting the concatenated encrypted feature value, the attribute information 303 and the electronic signature data. That is, the two-dimensional code encoding of the concatenated data is performed (step S105).
  • the issuing device 10 arranges and molds the face photograph data 302, the attribute information 303, and the two-dimensional code 304 so that they can be simultaneously displayed on the display of the smartphone by the identification card molding function 101 (step S106), and the digital ID.
  • the certificate (image data) 301 and the digital identification certificate data 305 are externally output (step S107).
  • the smartphone 30 acquires the digital identification card (image data) 301 through a network or a medium transfer (step S108), and stores the digital identification card (image data) 301 in the storage device 404 of the smartphone 30 (step S108). S109).
  • the issuing device In steps S105 and S106, the issuing device generates the digital identification card (image data) 301.
  • the digital identification data (image data) 301 is used in the smartphone 30 by using the digital identification data 305. May be generated.
  • the owner of the smartphone 30 understands the functions of the verification device 20 and the functions of the smartphone 30, and both the verification device 20 and the smartphone 30 can communicate with each other by wireless LAN, BlueTooth (registered trademark) communication, NFC communication, or the like.
  • the procedure proceeds to the procedure of displaying the verification on the display of the smartphone shown in FIG. 4 for verification. If it has a communication function, the procedure transfers to and from the communication shown in FIG. 5 to verify the data.
  • FIG. 4 is a sequence diagram showing the verification processing procedure by displaying the digital ID card according to the first embodiment on the display.
  • the smartphone 30 displays the digital ID (image data) 301 stored in step S109 on the display of the smartphone 30 and presents it to the image capturing device 21 (step S200).
  • the image capturing device 21 captures the image displayed on the display of the smartphone 30 (step S201), and the verification device 20 acquires the screen image captured by the image capturing device 21 from the image capturing device 21 (step S202). ).
  • the verification device 20 uses the two-dimensional code reading function 202 to read the two-dimensional code from the screen image acquired in step S202 and decode the two-dimensional code (step S203).
  • the decoded data is composed of the encrypted feature value, the attribute information, and the digital signature value, and the digital signature is verified from these data using the cryptographic processing function 203 (step S204).
  • the error verification process fails, as shown in FIG. 6A, for example, as shown in FIG. 6A, there is an error in the two-dimensional code 304 of the digital identification card 301 on the display of the verification device 20, and the signature verification fails.
  • a message is displayed (step S205).
  • step S206 If the signature verification is successful, the character related to the attribute information 303 is recognized from the screen image acquired in step S202 by using the character recognition function 206, and the characters are compared and verified with the attribute information decoded in step S203 (step S206).
  • step S207 If the two pieces of information do not match, as error processing, for example, as shown in FIG. 6B, the attribute information 303 portion of the digital identification card 301 is incorrect on the display of the verification device 20, and the attribute information is misrepresented. And the correct attribute information is displayed (step S207).
  • the encryption processing function 203 decrypts the encrypted feature value decoded in step S203 with the common key K205 (step S208), and the decrypted feature value and the face image of the screen image acquired in step S202.
  • the part and the part are compared and verified by using the matching function 207, and it is verified whether or not the feature value is the data extracted from the face photograph (step S209).
  • the matching function 207 represents the correlation between the face photograph and the feature value as a numerical value, and when the matching rate between the face photograph and the feature value is less than or equal to the threshold value, as the error processing, for example, as illustrated in FIG.
  • the display shows that the face photograph 302 of the digital identification card 301 is illegal and the face photograph is forged (step S210).
  • step S211 When the matching rate between the facial photograph and the feature value is equal to or more than the threshold value, as the authenticity result process, as shown in FIG. 5D, the display of the verification device 20 displays that the digital identification card 301 is correct. Yes (step S211).
  • the matching between the face photograph and the feature value is performed by using the first feature value information extracted from the face photograph data (face image) 302 and the second feature value information included in the two-dimensional code 304 (identifier image). It is done by comparison.
  • the first feature value and the second feature value are, for example, information regarding the position of the feature points of the face.
  • FIG. 5 is a sequence diagram showing a procedure for exchanging the digital identification certificate according to the first embodiment through communication and verifying the identification data.
  • the smartphone 30 transmits the digital ID data 305 stored in step S109 (step S400).
  • the data reception function 22 receives the identification certificate data 305 transmitted from the smartphone 30 (step S401), and the verification device 20 acquires the identification certificate data 305 received by the data reception function 22 (step S402). ).
  • the received data consists of face photograph data 302, encrypted characteristic values, attribute information, and electronic signature value. Verification of the electronic signature from the encrypted characteristic value, attribute information, and electronic signature value using the cryptographic processing function 203. Is performed (step S404).
  • step S405 If the signature verification has failed, the fact that the signature verification has failed is displayed as error processing (step S405).
  • the encryption processing function 203 decrypts the encrypted feature value acquired in step S402 with the common key K205 (step S406), and the decrypted feature value and the face photograph data 305 acquired in step S402. Are compared and verified by using the matching function 207, and it is verified whether or not the feature value is data extracted from the face photograph (step S407).
  • the matching function 207 represents the correlation between the face photograph and the feature value as a numerical value, and when the matching rate between the face photograph and the feature value is less than or equal to the threshold value, as the error processing, for example, as illustrated in FIG.
  • the display shows that the face photograph 302 of the digital identification card 301 is illegal and the face photograph is forged (step S409).
  • step S409 When the matching rate between the facial photograph and the feature value is equal to or more than the threshold value, as the authenticity result processing, for example, as shown in FIG. 5D, it is indicated that the digital identification card 301 is correct on the display of the verification device 20. It is displayed (step S409).
  • the matching between the face photograph and the feature value is performed by the first feature value information extracted from the face photograph data (face image) 302 included in the ID card data 305 and the second feature value information included in the ID card data 305. It is performed by comparing with the characteristic value information.
  • the first feature value and the second feature value are, for example, information regarding the position of the feature points of the face.
  • the verification device of the first embodiment is the verification device 20 connected to the image capturing device 21 and the data receiving device 22.
  • the verification device 20 has a signature verification unit and an image verification unit (see FIGS. 1, 4, and 5) and performs the first process (see FIG. 4) or the second process (see FIG. 5).
  • the signature verification unit acquires the two-dimensional code (identifier image) 304 and the face from the acquired image (digital identification card) 301 acquired by photographing the screen of the smartphone 30 (terminal).
  • the photograph data (face image) 302 is extracted and the two-dimensional code (identifier image) 304 is verified from the electronic signature included in the two-dimensional code (identifier image) 304.
  • the image verification unit compares the first feature value information extracted from the face photograph data (face image) 302 with the second feature value information included in the two-dimensional code (identifier image) 304, and the face photograph. The authenticity of the data (face image) 302 is verified.
  • the signature verification unit verifies the electronic signature from the acquired data (identification certificate data) 305 received and acquired from the smartphone 30 (terminal). Then, the image verification unit compares the first feature value information extracted from the face photograph data (face image) 302 included in the acquired data 305 with the second feature value information included in the acquired data 305 to compare the face. The authenticity of the photographic data (face image) 302 is verified.
  • the verification device when the owner of the terminal grasps the function of the terminal and the terminal has the communication function (data transmission function), the verification device receives and acquires from the terminal using the data receiving device. The electronic signature is verified from the acquired data (the second process).
  • the verification device extracts the identifier image and the face image from the acquired image acquired by photographing the screen of the terminal using the image capturing device, and the electronic device included in the identifier image. The identifier image is verified from the signature (the first process).
  • the owner of the terminal can select the verification method according to the function (communication function or the like) of the terminal in the verification device connected to the image capturing device and the data receiving device.
  • the terminal since the function of the terminal differs depending on the model, the terminal may not have the communication function depending on the model. According to the first embodiment described above, even when the function is different depending on the model of the terminal, the verification method according to the function of the terminal can be selected.
  • the technology used in biometrics authentication is applied, and the feature value (“feature point position of face such as eyes, nose, mouth edge” or “face” that can uniquely identify the face photograph from the face photograph data is applied.
  • feature point position of face such as eyes, nose, mouth edge” or “face” that can uniquely identify the face photograph from the face photograph data
  • the image that is obtained by cutting out only the eye portion that characterizes the image is added, and an electronic signature is added to the information, thereby reducing the amount of data to be sent. Since the amount of data is reduced by making the information to be sent, it becomes possible to select the verification method according to the functions of the mobile device and the verification device. That is, by setting the feature amount of the face photograph data as the verification target, it becomes possible to verify the validity of the data of the identification card with a small data amount.
  • Example 2 is implemented in addition to Example 1.
  • FIG. 7 is a diagram (difference from FIG. 1) showing an example of the overall configuration of the digital identification system 2 according to the second embodiment.
  • the verification device 20 is also connected to the person photographing device 23, and from the face photograph 302 and the video/image photographed by the person photographing device 23, via the face recognition function 209 used in biometrics authentication, The system also verifies whether the person who presents the digital identification card 301 is the correct holder.
  • the person photographing device 23 connected to the verification device is realized by a device such as a digital camera or a WEB camera.
  • the digital identification card 301 is issued as in the first embodiment.
  • FIG. 8 is a sequence diagram showing a digital identification certificate verification processing procedure and a digital identification certificate holder authentication processing procedure according to the second embodiment.
  • the process up to step S210 is the same as that of the first embodiment.
  • the person photographing device 23 photographs the person who presented the digital identification card 301 (step S301), and the verification device 20 acquires the person image photographed in step S301 from the person photographing device 23 (step S302).
  • the verification device 20 compares and verifies the face photograph data determined to be authentic in step S209 and the person image data acquired in step S301 using the face authentication function 209, and presents the digital identification card 301. Is verified to be the correct holder (step S303).
  • the face authentication function 209 expresses the correlation between the face photograph and the person image as a numerical value.
  • error processing is performed as shown in FIG. 9A, for example.
  • the fact that the face photograph 302 of the digital identification card 301 and the face of the person who presented the digital identification card 301 do not match is displayed on the display of the verification device 20 (step S304).
  • the digital identification card 301 is authentic and the digital identification card 301 is displayed on the display of the verification device 20.
  • the fact that the face of the person who presented 301 is matched is displayed (step S305).
  • the procedure of displaying on the display of the smartphone and verifying was taken as an example, but the procedure of verifying the data transmitted and received via communication can be similarly added.
  • the subject of the camera is authenticated from the face image taken by the external camera and the like and the face photograph that is verified to be valid.
  • the feature amount of the face photograph data is set as the verification target, so that the legitimacy of the data of the identification card can be verified with a small data amount.
  • the identification certificate image and the identification certificate data are described as an example, but the present invention is not limited to this and can be applied to other images and data.

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Abstract

La présente invention concerne un dispositif de vérification qui doit être connecté à un dispositif de capture d'image et à un dispositif de réception de données et qui vérifie, dans un premier processus, un code bidimensionnel à partir d'une signature électronique comprise dans le code bidimensionnel. Dans un second processus, le dispositif de vérification vérifie la signature électronique à partir de données acquises qui sont reçues et acquises à partir d'un terminal. Le dispositif de vérification vérifie ensuite l'authenticité de données de photographie faciale par comparaison entre des premières informations de valeur de caractéristique et des secondes informations de valeur de caractéristique.
PCT/JP2019/041885 2018-11-27 2019-10-25 Dispositif de vérification et procédé de vérification WO2020110536A1 (fr)

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