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    • 专利摘要:
    The invention relates to a biometric authentication device, comprising: a positioning module with measurement zone; • a cryptographic calculation module; • an ultrasound module; • a module for measuring heart rate and blood pressure; • a photographic module configured to create - a photograph of the venous network of the finger; - a photograph of the fingerprint of the finger; a contrast light spectrometry of the finger; - and a photograph of the venous network of the finger by intrinsic infrared emission of the finger. The cryptographic module is configured to authenticate the user according to the vector image relating to said ultrasound of the venous and nervous networks of said finger, the measurement of a heart rate and the measurement of a blood pressure, the photograph of the venous network of said finger, the photograph of the fingerprint of said finger, and the spectrometry of said finger.
    公开号:FR3049090A1
    申请号:FR1600460
    申请日:2016-03-21
    公开日:2017-09-22
    发明作者:Sebastien Jean Serge Dupont
    申请人:Sebastien Jean Serge Dupont；
    IPC主号:
    专利说明:

    INTRODUCTION
    The present invention relates to the field of biometric authentication. More particularly, the invention relates to biometric authentication means, portable, particularly adapted to secure transactions, without disclosure, through a decentralized computer network.
    Current biometric devices, such as fingerprint recognition systems embedded in mobile phones, have known limitations. In particular, it is possible to deceive these from reconstructed fingerprints, from a photograph for example. Other devices to overcome these limitations are thus known. In particular, it is possible to perform an impression of the venous network by means of an infrared photographic device. If the level of reliability and security is significantly improved, the necessary means are not suitable for mobile use, especially because of their size and their relative fragility. In addition, they require a prior enrollment of the user, in order to collect the information necessary for the analysis of the venous network. On the other hand, these means do not provide effective protections concerning the physical security of the user, such as the removal of a finger, for example. These do not specifically take into account the evolution or changes in the user's morphology - growth, weight gain, edema, cuts, superficial or deep burns, etc. -, observed throughout his life. This is why there is a need for biometric, portable authentication means adapted in particular for securing transactions, without prior disclosure or enrollment, through a decentralized computer network, having a very high level of security, able to discriminate against the Internet. the immense majority of individuals, guaranteeing the physical security of the individual, and offering an adaptability to the morphological evolutions of the individual observable throughout the life of the latter.
    An object of the invention is to provide biometric, portable authentication means adapted in particular for securing transactions, without prior disclosure or enrollment, through a decentralized computer network, having a very high level of security, capable of discriminating against the Internet. the immense majority of individuals, guaranteeing the physical security of the individual, and offering an adaptability to the morphological evolutions of the individual observable throughout the life of the latter. Another object of the invention is to provide means to make reliable and adapt to all sizes of fingers. Another object of the invention is to provide biometric and computer means having a very high degree of security and able to identify the vast majority of individuals. Another object of the invention is to provide biometric authentication means making it possible to dispense with any storage of the biometric keys or private keys of an individual to perform any type of computer transaction. The invention particularly relates to an adaptive biometric authentication device by ultrasound, photography in visible light, infrared light photography and spectrometric analysis of the fingers. The invention also incorporates a correlation verification device for validating other biometric fingerprints. The device according to the invention is particularly intended for biometric authentication, presenting a particularly high level of reliability and security, of individuals, with a view to carrying out computer transactions through a computing device, such as a mobile telephone, a computer or any other device likely to benefit from these authentication means, for example a car lock, safe, house, buildings, or border control device.
    ABSTRACT
    Thus, an embodiment provides a biometric measurement device, characterized in that it comprises: a positioning module comprising a measurement zone, said positioning device being configured to allow a user to have at least one finger in the measurement zone; • a calculation module; An ultrasound module, coupled to the calculation module, and configured to perform an ultrasound of venous and nervous networks of a finger after introduction of said finger into the measurement zone; and transmitting, to the calculation module, the biometric data relating to said ultrasound of the venous and nervous networks of said finger; A photographic module, comprising several light sources, coupled to the calculation module, and configured to produce, after insertion of a finger into the measurement zone: a first photograph of a venous network of said finger and by means of at least one an infrared light source arranged so as to allow, once illuminated, the photographic module to make a photograph of the venous network of said finger, the infrared light source is arranged in a particular way to avoid the bone of the phalanx and transmit said network photograph venous to the computation module; a second photograph of a fingerprint of said finger and by adding contrast light provided via coherent light sources having at least one wavelength between 400nm and 800nm; and transmitting said photograph of the fingerprint to the calculation module.
    The calculation module being configured to generate biometric measurements specific to a user, following the introduction of one of said user's fingers into the measurement zone, according to said ultrasound of the venous and nervous networks of said finger, of the photograph of the venous network of said finger, of the photograph of the fingerprint of said finger.
    According to one embodiment, the ultrasound module further comprises a measurement module (11), coupled to the calculation module, and configured to measure and transmit to the calculation module, a measurement of a heart rate and a measurement of a blood pressure, performed on a finger after introduction of said finger in the measurement zone.
    According to one embodiment, the photographic module, coupled to the calculation module, is configured to make a photograph in infrared light of a venous network of a finger, without adding external light after introduction of said finger, in the measurement zone ; and transmitting said photograph of the venous network to the calculation module.
    According to one embodiment, the calculation module is configured to perform a spectrometric analysis of the second photograph of a fingerprint, by adding contrast light and transmit said spectrometric analysis to the calculation module.
    According to one embodiment, the positioning module comprises a stop and a blocking module configured to apply, after introduction of a finger into the measurement zone, a pressure on said finger so as to block the nail of said finger against the stop, and temporarily constrain said finger to remain in a substantially fixed position in the measurement zone.
    According to one embodiment, the calculation module is further configured to authenticate a user, following the introduction of one of the user's fingers into the measurement zone, only if the vector image relating to said network ultrasound venous and nervous of said finger, the measurement of a heart rate and the measurement of an arterial pressure, the photographs of the venous network of said finger, the photograph of the fingerprint of said finger, and the spectrometry of said finger are considered as answering to a set of predefined compliance criteria.
    According to one embodiment, the calculation module is configured to generate at least one vector image, clipped at its ends, the biometric measurement relating to ultrasound (ECR1), biometric measurements relating to photographs in infrared light with (ECR2 ) addition of infrared light and the biometric measurement of fingerprint photography by addition of contrast light (ECR3).
    According to one embodiment, the calculation module is adapted to implement a cryptographic method of digital signature, encryption and decryption, the calculation module being configured for: • after introduction of a finger into the measurement zone, determining at least one biometric control key from each resulting clipped vector measure respectively of the ultrasound biometric measurement (ECR1), the first (ECR2) and the second (ECR3) photograph; • determine three private identification keys (PRIVa) (PRIVb) (PRIVc) by calculating three two-by-two combinations of said biometric control keys (CCMESa) (CCMESb) (CCMESc); • calculate three public identification keys (PUBa) (PUBb) (PUBc) relating to said three private identification keys; • calculating three identification control keys (CCa) (CCb) (CCc) relating to said three public identification keys; • transmit, to the external device, said three public identification keys and said three identification control keys; or, • Sign and / or decrypt and / or encrypt information transmitted by the external device.
    According to one embodiment, the calculation module is configured to identify a user, following the introduction of one of the user's fingers into the measurement zone and to transmit the identification control keys of said finger to a user. external device, only if: • the blood pressure measurement is below a predetermined threshold; and / or, • the heart rate measurement is below a predetermined threshold.
    According to one embodiment, the computing module is configured to record at least a second finger of the same individual, from the collected biometric data only if they are considered to meet a set of predefined compliance criteria.
    According to one embodiment, the calculation module is configured to define at least three previously registered finger identification control keys of a given individual: • a finger enabled to activate an alert; • a finger enabled to disable an alert; • a finger empowered for common use; At least one additional finger previously recorded makes it possible to recover the data of said individual according to predefined conditions.
    According to one embodiment, the calculation module is configured to certify an individual as unique if said individual has recorded at least six fingers through at least one device (5).
    According to one embodiment, the biometric device (5) is integrated inside a telephone, in a format for performing biometric measurements for fingers of different sizes (2a) (2b), integrated (2a) ( 2b) or not (2c) in the phone screen.
    BRIEF DESCRIPTION OF THE FIGURES Other features and advantages of the present invention will appear, in the following description of embodiments, with reference to the accompanying drawings, in which: [Figure 1a] schematic side view of a biometric device according to an embodiment of the invention, when a large finger of 5 mm is inserted; [Figure 1b] schematic front view of a biometric device according to one embodiment of the invention, when a large finger of 5 mm is inserted; [Figure 1c] schematic side view of a biometric device according to one embodiment of the invention, when a 25 mm wide finger is inserted; [Figure 1d] Figure 1d is a schematic front view of a biometric device according to one embodiment of the invention, when a 25 mm wide finger is inserted; [Figure 2a] schematic view of a biometric device according to one embodiment of the invention, integrated with a telephone whose screen is arranged all around said biometric device; [Figure 2b] schematic view of a biometric device according to one embodiment of the invention, integrated with a telephone adapted to small fingers; [Figure 2c] schematic view of a biometric device according to one embodiment of the invention, integrated into a phone with a small screen; [Figure 3a] schematic view of an ultrasonic sensor (9) according to one embodiment of the invention; [Figure 3b] schematic view of the integration of the ultrasonic sensor (9) on a support (8) of the biometric device (5) according to one embodiment of the invention; [Figure 3c] representation, respectively, of the raw (BR1), vector (VECU) and clipped (ECR1) results obtained using the ultrasonic sensor (9); [Figure 4a] schematic view of an infrared photographic sensor (18) by finger transparency from the infrared source (20) according to one embodiment of the invention; [Figure 4b] schematic view of the integration of the photographic sensor (18) on the support (16) and the infrared source (20) on a support (17) of the biometric device (5) according to an embodiment of the invention; [Figure 4c] Representation, respectively, of the raw (BR2), vector (VECT2) and clipped (ECR2) results obtained using the photographic sensor (18); [Figure 5a] schematic view of a photographic and spectrometric sensor (18) from the light sources (23) and (24) according to one embodiment of the invention; [Figure 5b] schematic view of the integration of the photographic sensor (18) and the light sources (23) and (24) on a support (16) of the biometric device (5) according to one embodiment of the invention; [Figure 5c] representation, respectively, of the raw (BR3), vector (VECT3) and clipped (ECR3) results obtained using the photographic sensor (18); [Figure 6a] schematic view of an infrared photographic sensor (18) by intrinsic infrared emission of the finger (4) according to one embodiment of the invention; [Figure 6b] schematic view of the integration of the photographic sensor (18) on the support (16) of the biometric device (5) according to one embodiment of the invention; [Figure 6c] representation, respectively, of the raw (BR4), vector (VECT4), clipped (ECR4), subtracted (ECR3), resulting (RES) and compared (COMP) results obtained using the photographic sensor (18). ); [Figure 7] schematic view of the communications between the different active components of the device (5) according to one embodiment of the invention; [Figure 8a] schematic view of the finger positioning mechanism consisting of a series of pistons (34c), a series of walls (34b) allowing the pistons (34c) to slide, a pocket of liquid (34a) connected to the pistons (34c), two sliding elements (34) and (17) positioning according to one embodiment of the invention; [Figure 8b] schematic view of the actual positioning device in open position incorporating the pressure elastic (35) according to one embodiment of the invention; [Figure 8c] schematic view of the actual positioning device in closed position integrating the pressure elastic (35) according to one embodiment of the invention; [Figure 9] is a schematic view of the first assembly step of the device (5), in which the supports (17) and (34) in vertical translation slide in the supports (8) and (16) of horizontal translation according to an embodiment of the invention; [Figure 10] schematic view of the second assembly step of the device (5), in which is added the pressure-retaining elastic (35) on six of the eight lugs provided for fixing the diaphragms (46) in a manner of embodiment of the invention; [Figure 11] schematic view in front view and profile of the silicone bag provided to be added to the device (5) to make it perfectly tight and elastic according to one embodiment of the invention; [Figure 12] Diagrammatic view of the inner housing of the device (5) in which will be added the components of Figures 10 and 11, this figure also shows the USB female connection device (31) according to one embodiment of the invention; [Figure 13a] schematic view of the assembly of the light strip (2) on the outer casing (44) according to one embodiment of the invention; [Figure 13b] schematic view of the light strip (2) assembled to the outer casing (44) according to one embodiment of the invention; [Figure 14] schematic view of the internal device mounted with the various components of Figures 10, 11 and 12 according to one embodiment of the invention; [Figure 15] schematic view of the cutting plane of the device (5) mounted according to the sectional plane described in Figure 14; [Figure 16] schematic view of the method of assembling the diaphragms (46) on the various locations (32) provided on the flexible membrane (36) according to one embodiment of the invention; [Figure 17] schematic view of the positioning of the inner housing (38) in the outer housing (44) on which the light strip (2) is already positioned, the air pockets (40) being provided to retract at the time of assembly according to one embodiment of the invention; [Figure 18a] schematic view of the final case as mounted in front view and left in one embodiment of the invention; [Figure 18b] schematic view of the final housing as mounted in rear and right view according to one embodiment of the invention; [Figure 19a] schematic view of the device for connection to telephones or tablets using the "USB-C" connector respectively in front, bottom, top and profile views according to one embodiment of the invention; [Figure 19b] schematic view of the integration of the connector (50) on the support (38) respectively in front, top and section views of the biometric device (5) according to one embodiment of the invention; [Figure 19c] Schematic view of the housing (38) empty, without the connector (50) and the wire connector (51) - Fig.19d- respectively in front and top views of the biometric device (5) according to one embodiment of the invention; [Figure 19d] Diagrammatic view of the wired connector (51), respectively in sectional, front, bottom, and top views and with the various USB connectors: USB-A, Ligthning, Micro-USB and USB-C, themselves same in front view and top view according to one embodiment of the invention; [Figure 20] schematic view of the cryptographic key calculation mechanism from the biometric measurements made by the device (5) according to one embodiment of the invention; [Figure 21a] schematic view of the content of the relative registration message of an individual's finger; [Figure 21b] schematic view of the contents of the emergency message (56) according to one embodiment of the invention; [Figure 21c] schematic view of the content of the signature (58) of a message according to one embodiment of the invention; [Figure 22] schematic view of the content of the message containing the data relating to an individual according to one embodiment of the invention; [Figure 23] schematic view of the integration of the device (5) on a telephone (26) in a peer-to-peer network of receiving devices (70) according to an embodiment of the invention; [Figure 24] schematic view of the databases contained on the receiving devices (70) according to one embodiment of the invention.
    DETAILED DESCRIPTION
    With reference in particular to FIGS. 1a, 1b, 1c and 1d, a device (5) according to an embodiment of the invention will now be described. FIGS. 1a, 1b, 1c, 1d, 18a and 18b show an assembled view of the device (5).
    The device (5) is intended to be integrated in a smartphone - more generally referred to by the English term "smartphone". The device (5) comprises for example a connector (50) capable of enabling coupling with a smartphone host terminal (26), computer (27) or any other computing device, for example by means of a connector of the type USB ("Universal Serial Bus"). The dimensions of the device (5) are chosen so as to be both the smallest possible, but also able to allow the identification, regardless of the size of the finger (reference 4 in the figures) - the width of a finger under relative pressure being typically between 5mm and 25mm. In the embodiment illustrated in the figures, excluding connectors (50) and (51) - the width of the device is substantially 55mm, the height, substantially 34mm, the thickness substantially 4.95mm. Each of the components of the device (5) has been designed for easy mounting and disassembly. The device (5) allows the vast majority of individuals to be able to authenticate and generate messages via this device. Generally, the device is intended to be used with the left index to authenticate. Nevertheless, the device also works with any finger of the hand and for some cases with the toes.
    Alternatively, as shown in Figures 2a, 2b and 2c, the device (5), by its small size, can be integrated inside mobile phones.
    The device (5) comprises: • a positioning module - Fig.8a - comprising a measurement zone so as to allow a user to reproducibly dispose at least one finger in the measurement zone; A calculation module (25); A first ultrasonic module (12) adapted to perform a high-precision ultrasound of the venous and nervous network of said finger in the measurement zone; and transmitting, to the calculation module, the biometric data relating to said ultrasound of the venous and nervous networks of said finger; A second ultrasonic module (11) adapted to perform a measurement of the cardiac rhythm and the arterial pressure; A third ultrasonic module (10) adapted to emit ultrasound whose echoes are measured by the first and second ultrasonic modules; A photographic module (18), comprising several light sources, coupled to the calculation module, and configured to produce, after insertion of a finger in the measurement zone: a first photograph of a venous network of said finger and by means of at least one infrared light source (20) arranged so as to allow, once illuminated, the photographic module to make a photograph of the venous network of said finger, the infrared light source is arranged in a particular way to avoid the bone of the phalanx - Fig.4a; and transmitting said photograph of the venous network to the calculation module; converted into a vector image by the calculation module; - a second photograph - Fig.5a - of a fingerprint of said finger with addition of contrast light provided via at least one light diode (23) and (24) having a wavelength of between 400nm and 800nm, and transmit said photograph of the fingerprint to the calculation module; a third photograph in infrared light and without the addition of an infrared light source, FIG. 6a, between 800 nm and 1 mm, of a venous network of said finger, after insertion of a finger into the measurement zone, using the infrared radiation clean said finger; - a spectrometric analysis of the first, second and third photographs - Fig.5d -; - a differential analysis of the first, second and third photographs - Fig.6c -; The calculation module being configured to generate biometric measurements specific to a user, following the introduction of one of the fingers of said user into the measurement zone, as a function of said ultrasound of the venous and nervous networks of said finger, of the photograph of the venous network of said finger, of the photograph of the fingerprint of said finger; • a mechanical device described in Figures 8a, 8b, 8c to ensure the reliability and reproducibility of measurements; A removable cryptoprocessor (28) for adding an authentication level to the device (5).
    FIG. 3a represents the ultrasonic sensor (9), of high precision, adapted to perform an ultrasound of the venous and nervous networks, converted into a vector image. The vector modeling of the finger - shown in Figure 3c - is the most accurate element of the device. Thanks to ultrasonic waves with hypersonic frequencies - typically of the order of 13Mhz, the ultrasonic receptor transducer array (12) makes it possible both to distinguish the superficial venous network (15), but also the nervous network (14) of the phalanx. distal. It should be noted that the physical properties of ultrasound require direct contact with the skin of the individual. The ultrasonic sensor (9) includes a concave ultrasonic transmitter transducer (10) configured to resonate at a frequency of substantially 13 MHz. The ultrasonic transducer (10) is substantially 3.5mm high and 1.5mm wide in size. This specific size allows the ultrasound emitted by this probe to remain in the Fresnel zone and to avoid any diffraction phenomenon to the bone (7) of the distal phalanx. The concave ultrasound probe (10) is configured to continuously transmit ultrasound at a frequency of substantially 13 MHz, said ultrasound being intended to be analyzed by a concave ultrasound receptor probe (11) and a network (12) comprising thirty-two transducers ultrasonic receivers.
    The concave ultrasonic receiver probe (11) has substantially dimensions 3.5mm in length and 1.5mm in width. It is configured to analyze by Doppler effect the blood pressure of the blood flow and the heart rate of the individual. These dimensions allow him to analyze the flow globally on the lateral part of the finger. The concave ultrasound receptor probe (11) also makes it possible to give the start of taking measurements - stopping the movement of the finger, but also the end signal at the reception of the second peak of the cardiac rhythm.
    The ultrasonic receptor transducer array (12) typically comprises thirty-two ultrasonic receptor transducers of size 0.8mm to 0.7mm capable of providing an ultrasound image of the distal phalanx side portion. The ultrasound image of the lateral portion of the distal phalanx, converted to a vector image, can thus be used as the first part of two of the three cryptographic keys - Fig.20 - (CCMES-a). This high-precision ultrasound allows complete visualization of the venous and nervous network of the finger.
    The ultrasonic sensor (9) is particularly advantageous in that: • it makes it possible to mix the sizes of the sensors; • the size of the probes makes it possible to avoid parasites; • the mechanism allowing both accurate positioning of the finger, but also a constant and reproducible pressure between the transducers and the skin of the individual - at this hypersonic frequency, any empty space would make measurement impossible; • the separation of the transmitter and receiver transducers allows both a continuous measurement in the device, but also to be able to separate the measurement of blood pressure by Doppler effect and the ultrasound itself without introducing parasites into the device.
    FIG. 3b illustrates an embodiment of the integration of the ultrasonic sensor (9) in a support (8) of the device (5).
    Measurements of the heart rate and blood pressure of the individual are made by the concave ultrasonic receptor probe (11) excited by the concave ultrasound probe (10). The concave ultrasound probe (10) continuously emits an ultrasonic wave, the ultrasonic sensor (11) measures the time between two peaks of blood pulsations, which is also the time required to take the biometric measurements. Measurement of blood flow by Doppler effect is not localized on a particular vein, but on the entire superficial venous network of the distal phalanx. The biometric measurement starts only in the event of immobility of the finger: indeed, any movement of the finger in the device would create such a peak that any measurement would be unusable. Thus, it is possible to ensure, in addition to the finger locking mechanism, that the finger of the user is immobile during the duration of a heartbeat.
    FIG. 4a represents the photographic sensor (18) able to take a photograph of the lateral venous network by infrared transparency via an infrared light-emitting diode (20) avoiding the bone (7) of the phalanx, converted into a vector image . The photographic sensor (18) consists of a photographic sensor (21), a converging meniscus (19) and an infrared light emitting diode (20). The photographic sensor (18) is positioned in a very specific way, to translate the image produced by a vector footprint of the venous network (15), but also to exclude the bone (7) from the measurement. The photographic sensor (18) makes it possible to use only an extremely small area of the finger. As shown in Figs. 4a and 4b, the infrared light emitting diode (20) is disposed on the lower portion of the device (5) at an angle of approximately 45 ° to the center of the bone (7) of the distal phalanx. The photograph used to generate the vector image shown in FIG. 4c is made by the photographic sensor (18) also used for the lateral fingerprints, the spectrometric analysis of the fingerprints and for the analysis of the venous network via intrinsic radiation of the finger (4).
    FIG. 5a shows the photographic sensor (18) capable of taking a photograph of the lateral fingerprints coupled with contrast light spectrometry. The photographic sensor (18) comprises a CMOS photographic sensor (21) - Anglo-Saxon acronym "CMOS" for "complementary metal-oxide-semiconductor - a converging meniscus (19), a light-emitting diode of contrast for example yellow (24) and a blue contrast electroluminescent diode (23). The photographic sensor (18) is configured to produce a contrast light for detecting a double skin by spectrometric analysis of the photographic sensor (21). Thus, the lateral imprints are much more difficult to obtain, because they are not left on the objects affected and very rarely exploitable from a photograph. The resolution of the photographic sensor (21) is also much greater because of the small size of the photographed area, especially since the light input is made by the light-emitting diodes (23) and (24) which illuminate by transparency of the skin the photographic sensor (21). The photographic sensor (18) makes it possible to obtain a contrast light photograph of the lateral fingerprints of the finger - the blue and yellow colors being particularly well processed by the photographic sensor (21). In order to allow an exploitable spectrometric analysis by the photographic sensor (21), the device integrates two light-emitting diodes (23) and (24) in the visible wavelength range. Said light-emitting diodes that emit at a fixed and stable wavelength, also called a coherent wavelength, make it possible both to provide the necessary light by transparency to the photographic sensor (21), but also to perform a spectrometric analysis. - Figure 5c - which differs between each color (amount of melatonin) and skin thickness. The type of camera used can be the same as that used in mobile phones (CMOS) with the advantage of integrating both the sensors, but also the components for the image processing.
    The wavelength of the infrared radiation of the human body being of the order of 10μηη, it is generally eliminated by a low-pass filter also called blocking filter on the photographic sensors directly at the level of the lens. Concerning the photographic sensor (18), this filter is deleted in order to be able to recover these data and thus allow the process of reliability and validation of concordance of the measurements made on the fingerprints and on the measurement of the venous network - Fig.6c.
    One of the advantages of the invention is to make reliable all measurements, regardless of the size of the fingers, but also regardless of the evolution of this size especially during periods of growth.
    The device previously described in FIG. 8a shows, in a real situation, the stresses applied to the pistons (34c) of silicone thus making it possible to block the nail of the finger by using the irregularities of the latter. This piston system in addition to forcing the finger to remain in a fixed position during the measurement, also allows and naturally to refocus said finger through the movements of these pistons. These pistons (34c) which bathe in Teflon oil never come into contact with the skin of the individual, the entire device being enclosed in a silicone membrane (36) particularly thin and elastic.
    The diagrams shown in FIGS. 8b and 8c respectively describe the state of the device in the maximum and minimum opening position. The movement of the four components is entirely constrained by the presence of the lugs (32) which impose for each finger width a defined height. The pressure of the device and the return to the state of rest in FIG. 8c are generated by the tension of the elastic (35), itself secured to the device by means of pins (33) also used to fix the upper diaphragms front and back.
    The cryptoprocessor (25) is the orchestra master of the various components of the device. Indeed, through the l2C protocol - Inter-Integrated Circuit, in English - it will control, schedule the actions of the components: Sensors, LEDs, removable cryptoprocessor, memory, 433 MHz network module, in order to recover the cryptographic keys , and then communicate with the host terminal and the decentralized network in which the data is stored - smartphone (26), computer (27), computing device - to communicate encrypted transactions to it, decrypt the received messages, sign and encrypt the transactions to transmit that have been requested.
    As in the diagram shown in FIG. 7, the set of cryptographic methods can be summarized as the only communication between the host terminal and the cryptoprocessor (25). The cryptoprocessor communicates directly with the other biometric components of the system via the data bus 12C of which it is the master. Finally and always by this data bus the cryptoprocessor uses the removable cryptoprocessor (28) to add a third level of authentication to the system, so that all or part of the transactions of an individual can be limited to the device (5) having the removable cryptoprocessor specified.
    For USB communication, the cryptoprocessor uses a UART - Universal Asynchronous Receiver Transmitter (UART) type microcontroller - from which it retrieves instructions from the host system and transmits encrypted and signed transmissions. An EEPROM (30) - Electrically-Erasable Programmable Read-Only Memory in English - is used as a data cache and can be seen as the only real exchange interface between the host system and the device. For each message filed by the smartphone or computer on this area of memory
    - specific directory, the central cryptoprocessor generates and signs the transaction and stores it in turn on another directory of this memory zone, the telephone or the computer then undertake to send the encrypted and signed message to the receiving devices (70) . In the context of "networkless" transactions, this memory area serves as storage for the various operations. The device (5) further integrates a second removable USB female connection (31) thus making it possible to connect other USB devices or a power cable that can also be used to supply electricity to the host system via the device (5). ). FIG. 12 illustrates an embodiment of the integration of the female USB connector (31) into a support (38) of the device (5).
    To ensure minimum impact on the environment the device is designed to improve the robustness - shocks, twists, immersion IP67, heat, cold - but also to be thrown to the garbage without adding plastics and harmful materials to the environment. The entire device is made of silicone with several levels of elasticity. The case is made of bamboo fiber and natural resins lacquered on the outside. The housing is also designed to be easily replaced in case of deterioration. None of the materials, electromagnetic and ultrasonic fields, as used in the device, has ever been incriminated in health problems. Finally the device, has a specific connector that both prevents water and moisture from entering the device as well as protect the phone from damage to its USB connector.
    Authentication keys are not calculated and stored as can be seen in traditional systems. In the device according to the invention, the cryptographic private keys are never stored - neither on the device nor in the databases on the decentralized network. Each time a finger is inserted, the device generates the three private keys (PRIVa, PRIVb and PRIVc) or more precisely the three pairs of control keys relating to the biometric measurements (CCMES1, CCMES2 and CCMES3) - Fig.20 - . Private keys thus generated are then calculated the public keys (PUBa, PUBb and PUBc) and the control keys (CCa, CCb and CCc) thus making it possible to retrieve the data of the individual in the databases from said keys of control. The recovered data being encrypted with the three public keys, they can therefore be automatically decrypted by the device that has the private keys. Thus the device never needs to store either the measurements or the private keys outside the biometric measurement itself. The use of biometric data as a cryptographic key is an innovation. The cryptographic algorithm used by the device is the ECDSA-Elliptic Curve Digital Signature Algorithm in English, although this invention does not exclude the use of other cryptographic algorithms. Indeed this one being particularly resistant, it is the privileged algorithm. Public keys and control keys are generated automatically from private keys. It should be noted that the calculation is considered impossible from the public key and even less possible for the control key which is only an irreversible imprint of the public key. To make the system inviolable, the system is based on temporary keys replaced as soon as the public key is unveiled - the control key, the public key and a message signed by the private key are sufficient to prove the possession of the private key and therefore the ability to perform transactions and generate messages on the associated control key. To make the system tamper-proof, private and public biometric keys never leave the device, no hardware or software device, is therefore considered reliable - smartphone, computers, etc. - unlike the device itself. Also, because privacy is an integral part of security, all transaction correlation elements are excluded from the device, except for certain smart contracts or "smart-contracts" in English that are necessary for the execution of Alert messages. "credit" transaction validations. The control key calculation algorithm used is the 256-bit encoded SHA-256 unlike the RIPEMD-160 algorithm used to generate bitcoin addresses - from the English "bit" bit and "bit" information unit piece of money. The first advantage is a better security provided by the SHA-256 algorithm, but also, and most importantly, this control key algorithm is directly integrated with almost all cryptoprocessors. Control keys are virtually the only unencrypted information of the device and these processes, hence the importance of avoiding address collisions, with a greater number of possible control keys than for the bitcoin network.
    Figures 21a and 22 describe the two basic transactions within the message chain on which it is stored. The messages (52) and (67) are the central points of the data stored on the message strings for a given individual, they allow the historization of the biometric public keys, the monitoring of the vital signs of the individual and the historization of the private keys that will be used to generate messages and others. This data is stored through messages stored in message strings themselves stored in several "column-oriented" NoSQL databases itself stored through a decentralized peer-to-peer network.
    As shown in FIGS. 21a and 22, with each new finger presented to the device (5), the latter is registered in a database relating to the identity data (ID) - FIG. 24 and gives rise to a new registration (FIG. 52), here is the detail of the content of the message (52) issued in the common case: • (53): this sequence integrates the control keys (CCa, CCb and CCc) of the keys resulting from the biometric measurements as described in FIG. allow the device (5) to retrieve all the transactions of an individual from the previous connections of a given individual, it should also be noted that after an individual has registered a new finger in the device (5 ), it is then possible for him from another message (52) to regain access to the data and this even after ablation of the common finger; • the reference (54) makes it possible to type the transactions, in this case "0" means that the transaction is of the type relating to the recording or updating of the biometric data of a finger; The cell (55) indicates the date of generation of the message; • the cell (56) contains the information designated by the English and international acronym "ICE" for "In case of Emergency" encrypted with a key common to the receiving devices - Fig.23 - (70) which allows the individual via the device (5) and the protection mechanism of the receiving devices (70) to restrict access thereto.
    These data to be used in particular by the services of first aid if however the individual gives the agreement. • The cell (57) contains the complete list of public keys (PUBa, PUBb, and PUBc) from the previous connections of a given individual and for all the previously recorded fingers. These public keys are encrypted using the public keys corresponding to the addresses (53) mentioned, which allows the device (5) to find all the previous transactions (67) and thus to find the content, whatever the finger used; • the cell (58) integrates the signature (65) of the device (5) to make this transaction irrevocable and inalienable by the device (5) on the one hand, but also by the receiving devices (70). This cell optionally integrates the signature (66) of the removable cryptoprocessor (28).
    As shown in FIG. 9c, here is the detail of the content of the transaction (67) issued in the common case: the reference (68) technically materializes the common finger used by a given individual on the device (5). In fact, the control keys (CC) mentioned are those of the common finger, and make it possible not to have to go through the messages (52) to find the transaction (67). It should also be noted that the number of key controls (CC) is not limited to ensure the adaptability of the device throughout the life of a given individual; • the reference (54) for typing the transaction: "1" means that the transaction contains on the one hand the encrypted individual data (69a) on the other hand the key (AES) for decrypting the data; The cell (55) indicates the date of generation of the message; • the reference (69a) contains the data encrypted with the key (AES) relating to the individual, the key (AES) is a symmetric or asymmetric key generated randomly by the device (5) and is renewed at each transaction, here is the content of the figures: - Biometric Common Data: - Biometric Public Key History (PUB) - Independent logging on each of the ten fingers; - The last two biometric public keys different from those already recorded and which will be used for the device learning and adaptability mechanism (5); - Heart rate and blood pressure (overall averages + last three measurements) which will be used to check that the individual is not in a state of alert; - Individual configuration of the alert contract to execute if necessary this contract without having to perform another transaction and the escape sequences of the alert message; - Public keys of the common finger (allowing normal transactions on the device (5)) to which is addressed (68); - Public keys of the alert finger; - Public keys of the alarm deactivation finger. - Data relating to the active digital identities of the individual: - Unique identity, digital identity (s) relative to a given country, a website, a service, an application, a reachability identifier (number telephone, email, etc.), a group or a company materialized by one or a series of cryptographic private keys and associated with a public key. This recording of the public key of the digital identity to which a key is associated allows mutual authentication between the individual and the latter, which also allows to secure communications and to authenticate irrevocably and mutual; - This section also includes additional information such as the criticality, the pseudonym or the associated typing of each of the digital identities listed above. - Data relating to the active smart contracts of the individual: - insurance contract (s), purchase-type contracts, loan agreements or delivery contracts materialized by one or a series of cryptographic private keys; - This section also includes additional information such as the criticality, the pseudonym or the associated typing of each of the accounts or contracts listed above. - Active Health Data - Cryptographic private keys related to Personal Health Records, criticality, associated pseudonym; - Data relating to the Internet of objects of active objects - Cryptographic private keys relating to connected objects associated with the individual, the criticality, the associated pseudonym (car, house lock ...); • The cell (69b) contains the encryption key (AES) used to encrypt the data (69a), this key (AES) is associated with a random number and is encrypted with each of the public keys (PUB) corresponding to the fingers of the individual, for example this key (AES) will be encrypted at least thirty times if the individual has previously recorded all of his ten fingers; • As is the case of all the transactions of the device (5), the cell (58) integrates the signature of the device (5) in order to make this transaction irrevocable and inalienable. This cell optionally integrates the signature (66) of the removable cryptoprocessor (28).
    Figures 21a and 22 show the different types of data that will be integrated into the database. These include the personal and key data of a given individual, the list of his different fingerprints to allow access to the device even after the removal of a finger, directory type data, groups, companies or institutions as well as certification and reputation mechanisms to certify and inform users about the reputation of a given identity.
    The signature illustrated in the transaction lines (52) and (67) is based on a method making it possible at the same time to ensure that the device is a recognized and authorized device, and also that it is not possible from of this signature to correlate with a particular device and therefore a user. To do so, from the assembly, the device is initialized with hundreds of private keys common to all devices and unknown to the receiving devices that will have only the list of public keys. A key update proposal is routinely sent by the devices (5) themselves. Each key will have a validity period of one month - maximum period of use of the device without connection to the network. The search for the public key associated with a signature of the device (5) is one of the proofs of work of the receiving devices (70) which thus prove that it is valid. The private keys of the devices are deposited in the technical data database - Fig.24- (TECH) and encrypted with one of the old public keys of the devices (5), which only allows the devices (5) to decrypt and to go up the key chain to access the last valid keys.
    To allow the device (5) to directly communicate the information to the user, the device uses a light strip (2) located on the front and at the eyelash of the eye (1). To propagate the light of the RGB LED (43) to the light strip (2), the device uses a fiberglass array (42) as shown in Figs. 13a and 13b.
    Referring to Figure 7. Each sensor is attached to a cryptoprocessor of the same type as the central cryptoprocessor (25). Each sensor is thus definitely authenticated by the central cryptoprocessor (25) by a "hash-based challenge-response" mechanism from a secret key initialized at the time of assembly of the components. The protocol mainly used is the l2C (Inter-lntegrated Circuit) which is a data bus that connects a microprocessor and different circuits. The central cryptoprocessor will send and receive orders and information through the l2C bus of: • (25 a): Ultrasonic Sensor Controller; • (25b): Controller of the photographic sensor; • (30): Cache memory; • (28): removable Cryptoprocessor; • (29): 433Mhz network controller. The lighting of the LEDs associated with the sensors is controlled by the GPIO ports of the controller (25), thus allowing the host system to be able to customize the light signals.
    In order to carry out contactless transactions and to distribute the transactions to the surrounding devices, the device integrates a communication module (29) operating in the 433Mhz band. This band being largely free on the whole of the Planet. The device integrates a transmitter and a receiver as well as two active antennas. The first antenna, limited in terms of transmission / reception works only a few tens of centimeters (also known as NFC: near-field communication) and is used to detect and initialize transactions without contacts around, this Antenna is also directional. The second antenna, unbridled, will issue transactions to a hundred meters on clear ground around. This radio transmission / reception is deactivated during biometric measurements as well as when the device is disconnected from the phone. The innovation in this device is to allow a set of devices to be able to operate almost autonomously through a mesh network - for example in a remote village in the world - by allowing devices around to know the status of transactions without however, to limit the confidentiality. Each device (5) is limited to one month of transaction without being connected to the network. The device (5) via the additional USB connection (31) further enables the host system to be connected to a satellite transceiver enabling it to receive and transmit messages via a satellite connection.
    Figure 9 shows the unassembled device. Figure 10 shows the four parts of the device to which was added an elastic (35) fixed on both sides of the device by two pins (33). FIG. 11 represents, in front view and on the side, the silicone membrane (36) which will cover the entire device, this figure also shows the mobile part (37), in dotted lines the glue points and in full lines the part "clipped" on the silicone housing (38) of the device (5). Figure 14 shows the device mounted in front view (excluding housing and glass fibers). FIG. 15 represents the sectional view mentioned in FIG. 14, making it possible to identify the positioning of the flexible silicone membrane (36), the finger positioning pistons (35), the pressure pocket (35a) or else a different from the shape of the membrane (36) on its moving part (37).
    Figure 16 shows the positioning of the diaphragms on the front face of the device - the process is the same on the rear face with the difference that they cover more surface to prevent the user from using the device in the opposite direction. The upper diaphragms are clipped on the pins of the elastic (33), themselves clipped on the positioning pins (32). The pins (33) also incorporate a slight transverse clearance to go up or down depending on the size of the nail. The bottom diaphragms are clipped on the positioning pins (32) of the lower mobile part of the device. The left and right diaphragms are clipped onto the panels next to the sensors (ultrasonic and photographic sensor). The light strip (2) described in FIG. 13a is used to inform the user of the state of the device by a set of colors that will appear on the eyelash. The headband is composed of four parts: • The tip of the fiberglass (41) which captures the light emitted by the LED RGB (43) and comes to fit in a zone contiguous to the LED (43) provided for this effect; • Fiberglass (42), which diffuses the emitted light to the "eyelash". The fiberglass (42) is accordionally assembled to allow separate mounting of the silicone housing (38) and the light strip (2); • The eyelash or strip light (2) itself composed of transparent silicone in which are fixed the endings of fiberglass (42); • The round of the black silicone eye (3) which allows the assembly to be secured to the case.
    The device (5) according to the invention is devoid of additional sensors for positioning the finger, the positioning is based only on three elements already described. The first being the mechanical device capable of imposing on the finger perfect and reproducible positioning described in Figure 8a. The second uses the Doppler effect - Fig.3a - (11) to wait for the immobility of the finger to start the process of biometric measurement, it also serves to check the good health of the individual and finally to stop the measurement following the second heartbeat. The latter uses the results generated by the measurements of the devices to check for any abnormal result, such as distal phalanx sense or results that are too unreadable to be exploited, in the case for example where the device is too dirty or damaged.
    权利要求:
    Claims (13)
    [1" id="c-fr-0001]
    1) biometric measurement device, characterized in that it comprises: a positioning module comprising a measurement zone, said positioning device being configured to allow a user to have at least one finger in the area of measures ; • a calculation module; An ultrasound module, coupled to the calculation module, and configured to perform an ultrasound of venous and nervous networks of a finger after introduction of said finger into the measurement zone; and transmitting, to the calculation module, the biometric data relating to said ultrasound of the venous and nervous networks of said finger; A photographic module, comprising several light sources, coupled to the calculation module, and configured to produce, after insertion of a finger into the measurement zone: a first photograph of a venous network of said finger and by means of less an infrared light source arranged to allow, once illuminated, the photographic module to make a photograph of the venous network of said finger, the infrared light source is arranged in a particular way to avoid the bone of the phalanx and transmit said photograph of the venous network to the calculation module; - a second photograph of a fingerprint of said finger and by adding contrast light provided through coherent light sources having at least one wavelength between 400nm and 800nm; and transmitting said photograph of the fingerprint to the calculation module. The calculation module being configured to generate biometric measurements specific to a user, following the introduction of one of said user's fingers into the measurement zone, according to said ultrasound of the venous and nervous networks of said finger, of the photograph of the venous network of said finger, of the photograph of the fingerprint of said finger.
    [0002]
    2) Device according to claim 1, wherein the ultrasound module further comprises a measuring module (11), coupled to the calculation module, and configured to measure and transmit to the calculation module, a measurement of a heart rate and a measuring a blood pressure, performed on a finger after introduction of said finger into the measurement zone.
    [0003]
    3) Device according to claim 1, wherein the photographic module, coupled to the calculation module, is configured to perform a photograph infrared light of a venous network of a finger, without external light input after introduction of said finger, in the measurement zone; and transmitting said photograph of the venous network to the calculation module.
    [0004]
    4) Device according to claim 1, wherein the calculation module is configured to perform a spectrometric analysis of the second photograph of a fingerprint, by adding contrast light and transmit said spectrometric analysis to the calculation module.
    [0005]
    5) Device according to any one of the preceding claims, wherein the positioning module comprises a stop and a blocking module configured to apply, after introduction of a finger in the measurement zone, a pressure on said finger so as to blocking the nail of said finger against the stop, and temporarily forcing said finger to remain in a substantially fixed position in the measurement zone.
    [0006]
    6) Device according to claims 1, 2, 3 and 4, wherein the calculation module is further configured to authenticate a user, following the introduction of one of the fingers of said user in the measurement zone, only if the vector image relating to said ultrasound of the venous and nervous networks of said finger, the measurement of a cardiac rhythm and the measurement of an arterial pressure, the photographs of the venous network of said finger, the photograph of the fingerprint of said finger , and the spectrometry of said finger are considered to meet a set of predefined compliance criteria.
    [0007]
    7) Device according to claim 1, wherein the calculation module is configured to generate at least one vector image, clipped of its ends, the biometric measurement relating to ultrasound (ECR1), biometric measurements relating to the photographs in light. infrared with (ECR2) addition of infrared light and the biometric measurement relating to the photography of fingerprints by addition of contrast light (ECR3).
    [0008]
    8) Device according to claims 1 and 7, wherein the calculation module is adapted to implement a cryptographic method of digital signature, encryption and decryption, the calculation module being configured for: • after introduction of a finger in the measurement zone, determining at least one biometric control key from each clipped vector measurement resulting respectively from the ultrasound biometric measurement (ECR1), the first (ECR2) and the second (ECR3) photography; • determine three private identification keys (PRIVa) (PRIVb) (PRIVc) by calculating three two-by-two combinations of said biometric control keys (CCMESa) (CCMESb) (CCMESc); • calculate three public identification keys (PUBa) (PUBb) (PUBc) relating to said three private identification keys; • calculating three identification control keys (CCa) (CCb) (CCc) relating to said three public identification keys; • transmit, to the external device, said three public identification keys and said three identification control keys; or, • Sign and / or decrypt and / or encrypt information transmitted by the external device.
    [0009]
    9) Device according to any one of the preceding claims, wherein the calculation module is configured to identify a user, following the introduction of one of the fingers of said user in the measurement zone and to transmit the keys of identification checks of said finger to an external device, only if: • the measurement of the blood pressure is below a predetermined threshold; and / or, • the heart rate measurement is below a predetermined threshold.
    [0010]
    10) Device according to any one of the preceding claims, wherein the calculation module is configured to record at least a second finger of the same individual, from the collected biometric data only if they are considered to respond to a set of predefined compliance criteria.
    [0011]
    11) Device according to claims 1, 2, 6, 8 and 10, wherein the calculation module is configured to allow to define in the form of at least three previously registered finger identification control keys of a given individual. • a finger enabled to activate an alert; • a finger enabled to disable an alert; • a finger empowered for common use; At least one additional finger previously recorded makes it possible to recover the data of said individual according to predefined conditions.
    [0012]
    Device according to claims 1, 2, 6, 8, 10 and 11, wherein the calculation module is configured to certify an individual as unique if said individual has registered at least six fingers through at least one device ( 5).
    [0013]
    13) Device according to claim 1, characterized by the integration of the biometric device (5) inside a telephone, in a format for performing biometric measurements for fingers of different sizes (2a) (2b), integrated (2a) (2b) or not (2c) in the phone screen.
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    同族专利:
    公开号 | 公开日
    WO2017162930A3|2017-12-07|
    CN109074478A|2018-12-21|
    WO2017162930A2|2017-09-28|
    US20190089539A1|2019-03-21|
    FR3049090B1|2021-06-25|
    CN108780501B|2021-12-28|
    CN108780501A|2018-11-09|
    US10985920B2|2021-04-20|
    CN109074478B|2021-10-15|
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    法律状态:
    2017-03-17| PLFP| Fee payment|Year of fee payment: 2 |
    2017-09-22| PLSC| Publication of the preliminary search report|Effective date: 20170922 |
    2018-02-20| PLFP| Fee payment|Year of fee payment: 3 |
    2019-11-29| ST| Notification of lapse|Effective date: 20191106 |
    2020-02-21| RN| Application for restoration|Effective date: 20200109 |
    2020-02-28| FC| Decision of inpi director general to approve request for restoration|Effective date: 20200122 |
    2020-11-10| PLFP| Fee payment|Year of fee payment: 6 |
    2021-08-14| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1600460A|FR3049090B1|2016-03-21|2016-03-21|ADAPTIVE BIOMETRIC AUTHENTICATION DEVICE BY ULTRASOUND, VISIBLE CONTRAST AND INFRARED LIGHT PHOTOGRAPHS, WITHOUT DISCLOSURE, THROUGH A DECENTRALIZED COMPUTER NETWORK|FR1600460A| FR3049090B1|2016-03-21|2016-03-21|ADAPTIVE BIOMETRIC AUTHENTICATION DEVICE BY ULTRASOUND, VISIBLE CONTRAST AND INFRARED LIGHT PHOTOGRAPHS, WITHOUT DISCLOSURE, THROUGH A DECENTRALIZED COMPUTER NETWORK|
    CN201780018941.XA| CN109074478B|2016-03-21|2017-03-21|Adaptive device for non-public biometric identification using ultrasound, infrared and contrast visible light photography over decentralized computer networks|
    PCT/FR2017/000054| WO2017162930A2|2016-03-21|2017-03-21|Adaptive device for biometric authentication using ultrasound, infrared and contrast visible light photographs, without disclosure, via a decentralised computer network|
    CN201780018900.0A| CN108780501B|2016-03-21|2017-03-21|Method for individually managing message authentication associated with a message chain through a decentralized authentication network|
    US16/134,081| US10985920B2|2016-03-21|2018-09-18|Adaptive device for biometric authentication using ultrasound, infrared and contrast visible light photographs, without disclosure, via a decentralised computer network|
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