WO2017108428A1 - Dispositif d'authentification et procédé de reconnaissance optique ou acoustique de caractères - Google Patents

Dispositif d'authentification et procédé de reconnaissance optique ou acoustique de caractères Download PDF

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Publication number
WO2017108428A1
WO2017108428A1 PCT/EP2016/080238 EP2016080238W WO2017108428A1 WO 2017108428 A1 WO2017108428 A1 WO 2017108428A1 EP 2016080238 W EP2016080238 W EP 2016080238W WO 2017108428 A1 WO2017108428 A1 WO 2017108428A1
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WIPO (PCT)
Prior art keywords
characters
character
security
feature
character recognition
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Ceased
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PCT/EP2016/080238
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German (de)
English (en)
Inventor
Friedrich Kisters
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Individual
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Individual
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Publication of WO2017108428A1 publication Critical patent/WO2017108428A1/fr
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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/005—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations
    • G07D7/0054—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations involving markings the properties of which are altered from original properties
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/207—Matching patterns that are created by the interaction of two or more layers, e.g. moiré patterns
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/2075—Setting acceptance levels or parameters

Definitions

  • the present invention relates to an authentication device and a method for authenticating or determining the identity of a person, a device, a thing, a service, an application and / or a computer program, in which a
  • Authentication via a security element with at least one security feature and an authentication device takes place, in which an optical or acoustic
  • a security element that displays characters detectable by character recognition is modified by command rules triggered by external or internal triggers so that an altered security element can be optically detected and identified.
  • the dynamic security of the security element is that not all characters are modified and the command rules are triggered by internal or external triggers. Thus, it is unpredictable which characters and how the characters are modified.
  • optical security features that are represented by an electronically controlled display element and are therefore optically variable.
  • Such an optically variable element is described in DE 10 2004 045 21 1 A1.
  • an electrically controlled display element and a defractive structure at least partially covered, so that the visual appearance of the optical effect generated by the defractive structure is at least partially influenced by the electrically controlled display element.
  • characters for example the representation of
  • cover data which are generated via a mathematical algorithm.
  • Such a device and such a method are shown in DE 10 2004 049 998 A1.
  • the applicant's DE 10 2009 036 706 A1 describes a digital display for displaying security-relevant information or patterns that change as a result of an algorithm and / or external influences. These may be, for example, characters or a pattern, which change dynamically between two query times.
  • Embodiment therefore proposes that in a second comparison step, a comparison of the serial number of the physically present banknote with in a data store
  • deposited serial number images is performed. Besides the pure serial numbers In this comparison, other features, such as the characteristic image feature of the crack, are used for the comparison.
  • an authentication device having the features of claim 1 and a method having the features of claim 9.
  • the inventive authentication device is based on the implementation of a
  • the authentication device comprises in its basic form the following components: a security element with at least one character
  • Security feature that can be detected via a character recognition, - at least one detection device for detecting the appearance of the
  • At least one matching device for matching the security feature detected by the detection device and / or the characters, information or tone sequences converted by the character recognition device with a reference feature stored in a memory and / or one or more reference symbols and / or one or more reference tones.
  • the authentication device is characterized in that it comprises at least one control device, in which the detection conditions for detecting the appearance of the characters and / or the read-in conditions for the character recognition and / or the analysis parameters for the character analysis of the characters of the security feature are defined for an authentication request and that the security element has at least one structural feature which influences the appearance of the security feature and thus the detectability of one or more characters of the security feature in a character recognition and / or character interpretation, preferably dynamically.
  • the structural features are preferably such that they influence the appearance of the signs of the security feature, for example via a layer of material stored above or below the security feature. Even the characters themselves can
  • Structural feature for example by printing with an ink, which changes its physical, chemical or biological property in a period of time. This can e.g. the color of the characters, their fluorescence or even the degree of magnetism, when using inks that contain magnetic particles.
  • the authentication device according to the invention comprises, depending on the application, a plurality of control devices which each show the detection conditions for detecting the appearance, the read-in conditions for the
  • control device Define character recognition and / or the analysis parameters for the character analysis of the characters of the security feature for an authentication request.
  • the control device according to the invention can thus be part of the detection device and / or the
  • the security element consists of optically detectable characters which can be read via an optical character recognition (OCR recognition), converted into machine-readable characters and can be digitally evaluated.
  • OCR recognition optical character recognition
  • a detection device for detecting the appearance of the characters of the security feature is provided, preferably a camera.
  • acoustic safety information can also be evaluated by detecting the acoustic signals.
  • the detection means would comprise a microphone to detect acoustic signals as
  • Such acoustic signals are z. As sounds, sounds or signal mixtures.
  • characters should be construed broadly in the context of the present invention in terms of optically or acoustically detectable information or feature. Accordingly, the characters may be, for example, machine-readable patterns, characters such as letters, numbers, symbols or sound signals. After the characters are captured, a character analysis is performed, identifying the recognizable characters of the image's appearance Security feature can be converted into readable characters, information or an acoustic tone sequence.
  • Capture device optically captured images of the characters converted into computer readable digital characters. These characters usually consist of characters, typefaces,
  • the character recognition device is an OCR device and the character analysis is an OCR analysis which specifies in which computer-readable character an optically detected character is to be converted.
  • Character recognition means preferably detects the optically detectable characters of the security element and converts them into corresponding machine-readable characters (eg letters, numbers, symbols, special characters, etc.).
  • individual characters of the security feature are converted into corresponding tone signals or tone sequences (or vice versa).
  • tone signals or tone sequences or vice versa.
  • certain characters would be assigned to a particular tone, signal or sound.
  • To increase security only certain characters of the security element are converted into acoustic security features, while other characters either remain unchanged or an optical one
  • Authentication be used. After the conversion of the characters into computer-readable characters, information or in acoustic tone sequences, a balance is made by the
  • Character recognition device converted characters, information or acoustic tone sequences with a stored in a memory reference feature and / or
  • Matching device also perform a direct comparison of the detected by the detection device security feature with a stored in a memory reference feature and / or one or more reference characters and / or one or more reference tones.
  • the adjustment device is preferably part of a
  • Authentication server that manages character recognition and character submission. A mere capture of a security feature, such as one of characters
  • the static code forms an unpredictable dynamic code.
  • the string itself is also a structural feature, for example, in that it dynamically changes due to internal or external influences.
  • the authentication device has one or more
  • the authentication device is in a preferred variant as an authentication system with several separate, partly spatially separated,
  • Components formed consisting of a separate detection device (for example, a camera), a character recognition device (for example, an OCR recognition device) and a matching device (for example, a
  • the control device specifies the rules and / or parameters for the detection and / or reading in and / or the analysis for the characters of the security feature.
  • the control device with its predetermining rules and parameters thus represents another dynamic security feature in addition to any structural features that as external structural features (for example, a crackle) individual characters of the string of the
  • Override security feature of the security element The actual static code is dynamized and not predictably changed by the physical changes in the layer above, as well as by the change in the OCR read-in and analysis conditions.
  • the controller sets the detection conditions for detecting the appearance of the characters. If the detection of the characters takes place via an optical detection device, the parameters for the optical detection, for example by a camera or a lens system, are determined. This can
  • camera-specific parameters such as depth of focus, focus, Section enlargements, section reductions, sharpening filters or
  • Exposure parameters including manipulative exposures such as overexposure or underexposure, flash exposures, application of filters or exposures to light of particular color, strength or wavelength, or limitation of the image resolution used, as well as other read-out related parameters.
  • Character recognition may be predetermined by the control device. These include, for example, specifications that only certain characters of the security feature are detected. These include, for example, characters of a predefined size, a specific type or
  • the read-in conditions can be set so that only certain tones, keys, tone sequences, frequencies, pitches, tone lengths, volumes or pauses between the tones are read in.
  • the analysis parameters for the detection conditions and / or read-in conditions additionally or alternatively, the analysis parameters for the
  • Character analysis of the characters of the security feature for an authentication request include, for example, the algorithm or a mapping rule with which a character detected via the detection device is interpreted or converted after being read in. For example, it may be provided that certain characters of the security feature are converted into other characters or even a tone sequence or vice versa.
  • Authentication device and the device to be authenticated to be changed dynamically, randomly, sporadically or continuously, in each case the last exchanged
  • certain characters of the security feature may also be translated or converted to other characters, particularly when modified by dynamic factors, such as the battery level of a display device or the authentication device, in sounds by dynamic factors, such as the sound box of the output device or background noises, or when reading a non-digital Security element by cracking cracks in the paint or an overlying layer, to be physically altered.
  • the character analysis therefore generally involves the conversion of the characters read by the character recognition device in a rule or a
  • an OCR recognition and subsequent conversion into computer-readable characters is carried out from an optically obtained image which contains OCR-readable characters, wherein one or more characters of the security element are manipulated in such a way that an OCR recognition or OCR analysis of certain characters is no longer possible or the hard or unreadable characters are interpreted differently or must be assigned differently according to a rule.
  • security enhancement adds that
  • Security feature of a character recognition influenced.
  • this is an optically detectable, consisting of characters security feature in which at least some characters can be recognized via a character recognition device and converted into computer-readable characters.
  • the characters security feature in which at least some characters can be recognized via a character recognition device and converted into computer-readable characters.
  • Structure feature one or more characters of the security feature superimposed, changed, modified, erased or amplified, so that the character recognition device the
  • the structural feature is preferably a surface modification, for example a crackle pattern in the form of cracks, flakes, cracks or recesses. These surface modifications change one or more characters of the security feature in such a way that they are no longer readable or interpretable for the character recognition device.
  • structural features may also include 3D surface modifications such as
  • the relative position and / or position and / or arrangement of the characters changed in comparison to the original state.
  • Relative displacements of characters on the security element or color changes of the characters are also possible in order to influence the comprehensibility and / or the reading in and / or the later analysis in the character recognition and / or character interpretation.
  • the surface of the invention
  • the material is a lacquer which covers the security element.
  • the individual characters of the security feature can also be printed or printed with an ink or color that is invisible in daylight.
  • the structural feature can also be the entire three-dimensional
  • a three-dimensional security element produced in this way can additionally change due to biological, chemical, physical or mechanical influences.
  • such a three-dimensional security element can additionally change due to biological, chemical, physical or mechanical influences.
  • Security element in / or on its surface in addition a numerical code, which is dynamically changed and readable due to the material properties.
  • the background of the security element in the detection and / or detection of the security feature may play a role, for example, by the color or by a physical property of the background certain characters of the security feature are no longer readable or previously unreadable characters by the treatment Visible , This can be done, for example, by the fact that the characters are overshadowed or are no longer readable by a cloudiness.
  • Structural feature not only delete or modify certain characters within the security feature, so that it is no longer recognizable for later character analysis, but it is also the reverse case that a previously unreadable character is converted by a structure modification in a readable by the character recognition device character ,
  • Security element itself dynamically changed in a random manner and thus leads to a changed appearance of the security element between two query times.
  • the dynamic change of the structural feature of the security element is due to a material property of the structural feature, an inherent property of the security element and / or by an influence on an external physical and / or chemical and / or biological factor. Due to the dynamic change of the structural feature, previously recognizable characters are converted into unrecognizable characters between two sampling times or vice versa.
  • Another security-enhancing feature is that the read-in conditions for the
  • Detecting the appearance of the security feature and / or the character recognition and / or the character analysis can be changed by the control device, in such a way that a potential counterfeiter can not foresee this change.
  • certain setpoint values or parameters can be specified which have an influence on the detection device.
  • Security feature can be changed so that they are no longer readable for later character recognition.
  • exposure to complementary colors may occur so that certain characters (all or individual characters) within the security feature are augmented or attenuated for later character recognition.
  • the rule might be that violet characters are not read. If the security feature is now illuminated with a blue light, all the red characters turn violet and the former violet characters turn almost blue, depending on how intense the irradiation and how large the tolerance range is.
  • the at least one control device of the authentication device according to the invention comprises components which influence the software or hardware-based
  • Detection device the character recognition device and / or the character analysis. This can be done by transmitting the specific parameters required for the reading / recognition to the respective device. The selection of the parameters may be predetermined by the authentication device or done randomly. A counterfeiter would thus not only have to fake the false identity by presenting a stolen and forged original security element, but also take into account the appropriate rules for reading out or character recognition, for example when reading with a smartphone (mobile phone) and a subsequent character analysis. Depending on the manner in which the character is changed, a recognition threshold can be defined in the subsequent character analysis in order to define or interpret a recognizable and / or difficult to recognize and / or unrecognizable character. Furthermore, can be provided that only certain colors of a sign of the security feature are used for the subsequent character analysis, which for example by a
  • Color determination of the characters can be done. It can also be specified that only characters of a specific size, position or arrangement are used for a character analysis and thus for an authentication. This can be done via a
  • Position determination of the characters preferably by means of optics, done.
  • a sharpness or blur area may be defined upon detection of the security feature such that certain characters are no longer readable.
  • a surface may be constructed of multiple planes or layers, with the sharp area focused on a particular plane. Only characters of this level can be used for later character recognition and thus character analysis.
  • special filters can be used which cause certain characters of the security feature to become readable and / or unreadable. By applying the filter will, as with the other
  • Procedural measures not only changed the appearance of the security feature, but also the resulting security-related information.
  • optical character recognition this can be done with all optically possible means, for example also by irradiation with a specific wavelength or by overexposure or underexposure.
  • the read-in conditions predetermined by the control device can be predetermined both on the physical level during reading itself as well as during later character recognition and / or character analysis.
  • the times for performing such dynamic changes may be predetermined or arbitrary.
  • the user who wants to undergo an authentication for example, read his security element via a smartphone camera and transmit it to the authentication server. Macrolenses may preferably be used for this purpose as an attachment to mobile lenses for better recognition.
  • the authentication server deposits an image of the security element, in particular the security features attached thereto and evaluates the in the
  • control device can provide that a query for a
  • Authentication or identification must be made only under certain conditions, which only the user knows. For example, it can be provided that a certain section or angle of the security element in the optical detection by the
  • Detection device for a successful authentication is required.
  • the security element is mechanically processed before detection by the detection device, for example by folding or folding, so that the surface structure of the security element changes in such a way that signs of the security element
  • the security element consists of a layer or is coated with a layer which either alone forms a crackle pattern or, if the surface of the security element is mechanically affected, for example by folding or buckling.
  • a layer which changes the appearance of the symbols of the security feature as a structural feature, can for example consist of a paint, a dye, a plastic, an artificial polymer or a
  • Structural features may be prior to authentication or updating of a
  • the security element may be coated with a material that forms random cracks or breakouts and thus changes characters of a security feature such that they are no longer or otherwise readable or interpretable for subsequent optical character recognition.
  • the characters which are not readable via the detection device or which can not be interpreted via the character recognition device are translated into empty spaces or any other characters.
  • it may happen that changed characters are still readable, but compared to previously recognized as other characters. This generates security-relevant character information that is unpredictable to a potential attacker.
  • the characters can remain unchanged, d. H. if no influence by the structural feature (for example, a crackle) has taken place. Furthermore, the characters can also be changed, making these characters a different one
  • a security element which comprises at least one security feature can thus be visually changed by a structural feature (for example a crackle caused by a lacquer), such that it would be very difficult to make such an individual security pattern even with an optical comparison imitate.
  • a character recognition preferably an optical OCR recognition, is carried out, in which individual characters of the security feature, for example within a complex code, are no longer legible.
  • Such characters are either not recognized by an OCR analysis and thus are not converted into computer readable characters, or they are recognized as a wrong character and accordingly ignored, or converted to another computer readable character.
  • a copy can only outwit the result of an optical OCR analysis or an acoustic signal analysis if it is similar to the original in all or according to a rule predetermined aspects, which is possible only with disproportionate effort, if at all.
  • a possible authentication variant runs so that one with at least one
  • Security feature equipped security element first of a
  • Information such as a code, or a sound sequence to be converted.
  • the transmission takes place to a central database.
  • a central database For example, if the user needs to authenticate to a service provider, he can use his
  • Capture device to capture the same security element as the user and submit to the central database. Based on this, the matching device according to the invention can make the comparison according to a predetermined rule.
  • the central database on the second detection device can tell which rules are valid for the read-out process and transmit to the detection device only the valid string of characters obtained in accordance with the rule or the corresponding appearance of the security feature. The information generated from this can alternatively also be returned from the authentication device to the user. The latter must in turn transmit the information obtained to an authentication device. Only if the transmitted security-relevant information (eg a sequence of tones or a code) matches, is it ensured that the person to be authenticated is the correct person. Authentication is then positive if the transmitted security-relevant information (eg a sequence of tones or a code) matches, is it ensured that the person to be authenticated is the correct person. Authentication is then positive if the transmitted security-relevant information (eg a sequence of tones or a code) matches, is it ensured that the person to be authenticated
  • security-relevant information is identical to the information transmitted or entered by the user.
  • an acoustic is additionally or alternatively
  • the safety-relevant information represents a signal mixture or a tone sequence, which are detected by the detection device and evaluated by a character recognition device.
  • Reading conditions of the control device chosen so that only certain signals or
  • Sound information from the composite signal or the tone sequence are read out. This can be done for example by selecting a certain frequency spectrum or certain
  • Authentication query provided. This process can be repeated in the background, even without an active authentication request from the user.
  • complementary tones are generated via a signal generator, which result in certain frequencies and thus signal tones within the signal mixture being amplified or extinguished. This also changes the acoustic signature of the relevant safety information. Furthermore, certain
  • Change signature This can be done once at the time of reading or recording of the acoustic information by the detection device, in the later character analysis or at regular intervals in between, for example in the background between a mobile read-out device and an authentication server.
  • the authentication device further comprises a display device on which the current or modified appearance of the security element can be displayed after being transmitted by the authentication device for an authentication.
  • a display device on which the current or modified appearance of the security element can be displayed after being transmitted by the authentication device for an authentication.
  • This may be, for example, a smartphone (mobile phone) act on the display of the locally generated or transmitted by the authentication device security element or security features isolated therefrom are displayed.
  • a security element required for the authentication is included
  • Capture device detected image of the security element is on the display of
  • Smartphones display device
  • the captured image of the security element is then transmitted to an authentication device.
  • an existing network connection e. G.
  • Offline Network connection
  • Smartphones optically detects the security element displayed on the display of the first smartphone or the security features depicted thereon and thus detects the security feature displayed thereon
  • At least one control device prescribes the corresponding rules for the detection, reading and / or analysis of the characters (for example by means of a software-based
  • a control device can pretend to the reader that, for example, only the characters represented in a specific color are to be read within a code.
  • the matching device of the authentication device then adopts a matching of the security feature detected by the reading device with the stored reference feature.
  • the display device itself can also include a control device which, for example, specifies which parts of the security feature are to be displayed to the reading device. It can also be specified for an authentication that the rules of the control device of the display device with the rules of
  • the matching device can also communicate the last strings valid for the respective control device and its users, so that authentication is even possible if both systems are "offline", ie neither the user nor the reader has a connection to the respective security server.
  • the prerequisite for this is that the security feature since the last communication of the user-side change in terms of the relevant characters has not already changed again, or an appropriate fault tolerance is accepted.
  • provision may also be made for certain characters within the character string of the security feature to be converted into acoustic tones, which in turn are transmitted back to the first smartphone, in order to provide acoustic authentication via the microphone of a second smartphone (or another detection device). perform.
  • the recorded by the second smartphone acoustic signals are then transmitted to the authentication device for a comparison. If the match is the same, the person or his smartphone is positively authenticated.
  • the device according to the invention and the method can be used in particular for
  • Authentication or determination of the identity of a person, a device, a thing, a service, an application and / or a computer program are used.
  • a security element 1 with a surface 3 is shown.
  • the characters are, for example, a code consisting of letters and numbers. Further are
  • Structural features 4 provided to recognize in the variant shown as Crackle pattern with cracks.
  • the structural features 4 i.e., the cracks
  • the structural features 4 cause individual characters of the security feature 2 (in the illustrated variant, the numbers 2 and 5) to pass through
  • Character recognition device 6 are no longer or otherwise interpretable. This creates a changed over the structural features 4 security element, the security features 2 are changed so that they lead to an altered result at a later
  • Character recognition of the characters lead. About a camera as an optical detection device 5, the appearance of the security element 1 and / or the characters of
  • the character recognition device 6 performs optical character recognition (Optical Character Recognition; OCR detection). This is followed by a character analysis in which the recognizable characters of the appearance of the security feature 2 are converted or interpreted into readable characters. In the illustrated variant, the characters A, N, X, 3, 4 are readable. The numbers 2 and 5 are no longer uniquely readable due to the superimposed cracks of the structural feature 4 and are therefore not converted or correctly interpreted by the character recognition device 6, depending on the recognition settings. This creates information from recognizable and not clearly recognizable characters.
  • the unrecognizable or difficult to recognize characters can be converted into alternative signs or information, which further increases security.
  • you can create appropriate conversion rules For example, it would also be possible to replace numbers or letters completely with other characters in OCR analysis.
  • Character recognition means 6 converted characters of the security feature 2 with a stored in a memory reference feature.
  • the authentication device further comprises at least one control device 8, in which the detection conditions for detecting the appearance of the characters and / or the read-in conditions for the
  • Character recognition and / or the analysis parameters for character analysis of the characters of the security feature 2 are set for an authentication request. So can the
  • Control device 8 specify that only the increasingly highlighted characters A and X are used in the string of the security feature 2 for the later character recognition by the character recognition device 6. This can be done for example by a specific coloration using a filter. Alternatively, irradiation of the security element 1 with complementary colors can take place, so that
  • control device 8 can also specify that only certain characters of the string of the security feature 2 are used for authentication, for example, only certain character positions or sections of the
  • the control device 8 can not only the Einlese claim for
  • Detect device 5 but also the analysis parameters for a later Character analysis. These can provide, for example, that only certain characters of the string of the security element 2 are used for a conversion and thus become relevant for later authentication. Signs, which are composed for example of several colors, depending on the design, the application of complementary light or type of readout rule
  • the number "8" consists of half blue and half red color
  • this number would be interpreted as the number "3" when the readout rule that only the color "blue” applies. This is also the case if the character were read out under blue light on a screen, since in this case the red part changes to white. When reading a printed image under blue light, this red part would change to black, while the blue part would remain blue.
  • a read-out rule, which should only be read out blue, would thus deliver the number "3" in each case as a result.
  • FIG. 2 shows a further embodiment variant of the method or the authentication device according to the invention. It is envisaged that initially a
  • Character recognition of the characters of the security feature 2 of the security element 1 takes place, wherein all or part of the characters are converted by the character recognition device 6 after detection by the detection device 5 into an acoustic tone sequence.
  • the generated tone sequence is transmitted to the user for authentication, so that he must play the transmitted tone sequence for authentication, so that the tone sequence on a separate additional detection device 5, in this case a microphone, read again and compared with the stored reference tone sequence via the matching device 7 (acoustic signature). If both tone sequences agree according to the specifications, the authentication is positive.
  • the authentication device reads the security element of the user and generates an individual sound from parts of the detected characters, which is received via the microphone of the user and forwarded digitally to a central authentication server, in turn, from the
  • Authentication device has also received and deposited this sound and checks its acoustic match. Increasing the security can now be provided in this variant, that after the transmission of the correct tone sequence in a further course, the acoustic information is changed before detection by the detection device 5, for example by
  • a new acoustic signature is generated, which in turn can be stored as new security information in the authentication device. This new acoustic signature then serves as a starting point for a later identification of the user.
  • Fig. 3 an exemplary security element 1 is shown in which a plurality of
  • Security features 2 can be seen in the form of codes.
  • the security features 2 are presented in different ways, by the characters of different colors,
  • the surface 3 of the security element 1 is coated with a lacquer in which a crackle or cracks form as a structural feature 4. The cracks pass through the security element 1 and thereby overlap individual characters of the security features 2.
  • This security element 1 is in the course of an authentication request of a
  • Detected detection means (not shown) and subjected to an optical character recognition (OCR analysis).
  • OCR analysis optical character recognition
  • the recognizable characters are converted into corresponding computer-readable characters. Signs that are not clearly recognizable or from one
  • Structural feature 4 are assigned a different assignment, such as a space or any other character, whereby an individual code is generated that is unpredictable and different from the read code. Via one or more control devices (not shown) it is now possible to determine how the read-in or the OCR analysis should take place. Thus, when detecting the security element 1 it can be determined that only italics of the security feature 2 are to be read. Another rule may provide that only characters with a specific color scheme are detected. Furthermore, rules for the OCR conversion can also be specified, for example threshold values for a clear / fuzzy recognition of characters.
  • Such a security element 1 is impossible to copy for a counterfeiter with manageable effort. Also this does not know the individual rules for the capture or the OCR conversion, so that it impossible that with the authentication server as
  • Reference feature stored security information can foresee.
  • For authentication the same rules are used as those used when first reading in the
  • FIG. 4 shows a further variant of the authentication device according to the invention.
  • the authentication device can consist of several, spatially separated components that are connected to each other, for example via a network (for example, the Internet).
  • the starting point is a physical security element 1 (for example ticket), on the surface of which 3 security features 2 in the form of a code are formed. Individual characters of the security feature 2 are superimposed by cracks as a structural feature 4 and are therefore no longer properly evaluated for later OCR analysis.
  • About a mobile phone 1 is an optical detection of the security element 1 by means of built-in mobile phone camera, which serves as a detection device 5. After the registration of the registration of the
  • Security element 1 is displayed on the display device of the mobile phone 1, the security element 1 and sent to a server as image or already read security feature in code form, which can deposit the image of the security element 1 on the one hand, but at the same time also a character recognition or matching with a reference feature can perform.
  • the server comprises a character recognition device 6 and a matching device 7.
  • the mobile phone 1 and / or 2 can take over the functions of the server, especially if it is a local application on the phone. In this case, the server would only be updated.
  • Control device 8 specifies that the readout is to take place, for example, with red light, so that only the numbers 5 and 3 of the security feature 2 can be recognized in the security element 1.
  • the read-out rule can, depending on the variant, be predefined either by the server itself or by the mobile phone 2, provided that this comprises a separate control device 8 which specifies the read-out rule for reading in the security element 1.
  • the mobile phone 1, the server and / or the mobile phone 2 may include its own control device 8, which depends on the particular application.
  • the rules and parameters for the reading in and the subsequent evaluation of the security feature for the individual components of the authentication device can be defined individually.
  • Display device of the Handy 1 is sufficient to guarantee a high level of security.
  • Increasing the security can now be added that the detected with the reader of the mobile phone 2 characters of the security feature 2 is additionally subjected to OCR recognition to convert readable characters into computer-readable characters. In this case, individual characters are no longer properly interpretable due to the superimposed structural features 4.
  • a particular feature of the embodiment variant of the authentication device according to the invention shown here is that the display device of the mobile phone 1 does not have to be connected to the server in the case of an authentication query, ie. H. the authentication can also be carried out when the mobile 1 is "offline".
  • the matching device 7 of the server is a comparison of the detected by the reader of the mobile phone 2
  • a double authentication can be performed if the mobile 1 has an intact network connection, i.
  • a mobile communication device for example the mobile phone 1 or mobile phone 2
  • Character recognition device 6 and / or the adjustment device 7 and / or control device 8 includes. Then you would not need a separate server. The phone would take over its functions.
  • a physical security element 1 is initially detected by means of a mobile phone camera via a mobile phone 1 and transmitted to the authentication server, which can if necessary carry out a character recognition via a character recognition device 6 and optionally a character matching with a stored reference mark via a matching device 7.
  • a local database is provided, which includes a memory with read-in codes for an "offline" operation. There is a regular update according to a predetermined rule (e.g., a definition) between the authentication server and the local database. This database can also be located directly on the mobile phone 2. The reading should be done in accordance with readout rule with red light. Characters which in
  • the security element 1 is first displayed on the display (display device) of the mobile phone. If the mobile phone 1 is provided with a control device 8, the display of the security element 1 can also be done according to predetermined conditions or rules. In any case, the displayed security feature of the mobile phone 1 is detected by the reader of the mobile phone 2. The readout can also take place in accordance with predefined rules by means of a control device 8, so that in the illustrated variant, the digits "5" and "3" of the character string of the security feature 2 are visible as a result. This is followed by a check (“check”) with the authentication server to determine whether the detected by the reader of the mobile phone security 2 2 coincides with the stored security feature.
  • the stored reference data can be either at the authentication server itself or an internal or external local
  • the control device 8 can be assigned either to the server, the mobile phone 1 or mobile phone 2 or more of these devices. In an alternative variant, the reader of the mobile phone 2, the physical
  • the readout device of the mobile phone 2 communicates directly with the local database and performs a check of the security feature 2 obtained from the display device of the mobile phone 1 directly with the local database.
  • FIG. 7 shows the situation that only the mobile phone 1 is offline while the mobile phone 2 is online. In this case, the security feature 2 would be checked via the authentication server. The local database would not be required in this method variant for a review of the read security feature 2.
  • Fig. 8 shows the situation where the mobile 1 is online while the mobile 2 is offline. In this case, a communication link between the
  • Authentication server and the phone 1 consist.
  • the reader of the mobile phone 2 can still read the physical security element 1 directly or security feature 2 shown on the display device of the mobile phone 1 when the mobile phone 1 is online. Otherwise, in turn, a check of the read security feature 2 via a local

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computer Security & Cryptography (AREA)
  • Character Discrimination (AREA)

Abstract

La présente invention concerne un dispositif d'authentification et un procédé d'authentification, ou de détermination de l'identité d'une personne, d'un appareil, d'une chose, d'un service, d'une application et/ou d'un programme informatique dans lequel une authentification est effectuée par un élément de sécurité (1) comprenant au moins une caractéristique de sécurité (2) et un dispositif d'authentification. Dans le procédé, un élément de sécurité (1) est muni d'au moins une caractéristique de sécurité (2) constituée de caractères pouvant être détectés par une reconnaissance de caractères, l'apparence des caractères de l'élément de sécurité (2) est détectée par un dispositif de détection, une reconnaissance de caractères et/ou une analyse de caractères est effectuée dans laquelle les caractères reconnaissables de l'apparence de la caractéristique de sécurité (2) est convertie et une adaptation de l'élément de sécurité (2) détecté par le dispositif de détection (5) et/ou des caractères convertis par le dispositif de reconnaissance de caractères (6) est effectuée avec une caractéristique de référence stockée dans une mémoire et/ou un ou plusieurs caractères de référence et/ou un ou plusieurs sons de référence. Selon l'invention, on détermine les conditions de détection pour détecter l'apparence des caractères et/ou les conditions de lecture pour la reconnaissance de caractères et/ou les paramètres d'analyse pour l'analyse des caractères de la caractéristique de sécurité (2) et l'élément de sécurité (1) comporte au moins une caractéristique de structure (4) qui influe sur l'apparence de la caractéristique de sécurité (2) et donc sur la détectabilité d'un ou de plusieurs caractères de la caractéristique de sécurité (2) lors d'une reconnaissance de caractères et/ou d'une interprétation des caractères.
PCT/EP2016/080238 2015-12-23 2016-12-08 Dispositif d'authentification et procédé de reconnaissance optique ou acoustique de caractères Ceased WO2017108428A1 (fr)

Applications Claiming Priority (2)

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EP15202557.3 2015-12-23
EP15202557.3A EP3185221B1 (fr) 2015-12-23 2015-12-23 Dispositif d'authentification et procede de reconnaissance optique ou acoustique

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CN113935329B (zh) * 2021-10-13 2022-12-13 昆明理工大学 基于自适应特征识别与去噪的非对称文本匹配方法

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US3632993A (en) 1969-08-25 1972-01-04 Scanner Color code system
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DE60126698T2 (de) 2000-03-21 2007-10-25 Kabushiki Kaisha Toshiba, Kawasaki Informationverarbeitungsverfahren
WO2002099735A1 (fr) 2001-06-05 2002-12-12 Mediasec Technologies, Llc Authentification numerique de documents numeriques et analogiques
DE102004045211A1 (de) 2004-09-17 2006-03-30 Ovd Kinegram Ag Sicherheitsdokument mit elektrisch gesteuertem Anzeigenelement
DE102004049998A1 (de) 2004-10-14 2006-04-20 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zur visuellen Darstellung von Meßwerten
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DE102006037260B3 (de) 2006-08-09 2008-02-21 Universität Karlsruhe (Th) Verfahren zum Überprüfen und/oder Authentifizieren von Übermittlungsdaten, Verwendung, Vorrichtung und Computerprogrammprodukt
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DE102007044992B3 (de) 2007-09-19 2008-12-04 Ovd Kinegram Ag Diffraktives Sicherheitselement mit individualisiertem Code sowie Verfahren zur Erhöhung der Fälschungssicherheit eines Sicherheitsdokuments
US7793837B1 (en) 2009-03-30 2010-09-14 Visa International Service Association Authentication using physical characteristics of tokens
DE102009003221A1 (de) 2009-05-19 2010-11-25 Evonik Degussa Gmbh Transparente, witterungsbeständige Barrierefolie für die Einkapselung von Solarzellen II
DE102009036706B3 (de) 2009-08-08 2011-05-05 Human Bios Gmbh Sicherheitselement mit einer elektronischen Anzeigevorrichtung zur Darstellung von sicherheitsrelevanten Informationen oder Mustern, seine Verwendung als Bestandteil einer elektronischen Telekommunikation sowie ein Verfahren zur Kennzeichnung, Identifikation oder Authentifikation von Gegenständen oder Lebewesen
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EP2824641A1 (fr) 2013-07-08 2015-01-14 Friedrich Kisters Systèmes et procédés permettant d'authentification, d'identification ou de marquage d'objets ou d'individus au moyen de caractéristiques de sécurité dynamiques
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