Patent EA-003919-B1 (EA)
Title: Method and system for authentication of articles
Inventor: MISCHENKO VALENTIN ALEXANDROVI
IPC: G07D7/20
Filed: 1999-12-08
Abstract: 1. A method for marking articles, comprising generating private keys; storing the said keys in the database; generating an image for each sample of an article; applying the image on to the marked surface; reading the resulting image ; obtaining data on the readout image; encrypting; characterized in that can image is generated per each sample of an article, as a unique and random at least two-dimensional image; the said generated random two-dimensional image is applied on to a selected area made of material having a roughness surface with random parameters; the data on the readout image are encrypted; and the resulting code is applied on to the marking surface. 2. A method for marking articles, comprising generating private keys; storing the said keys in the database; generating a image for each sample of an article; applying the image on to the marked surface; reading the resulting image; obtaining data on the readout image; encrypting; characterized in that a image is generated per each sample of an article, as a unique and random at least two-dimensional image; the said generated random two-dimensional image is applied on to a selected surface area; and thereafter the surface with the applied image is modified until a irregular three-dimensional texture is formed; the resulting image is readout after the surface is modified; and thereafter the data on the readout image are encrypted; and the resulting code is applied on to the marking surface. 3. The method for marking according to claim 2, characterized in that the surface is modified until a steady texture of random parameters is formed. 4. The method for marking according to claim 2, characterized in that the surface is modified by perforation. 5. The method for marking according to claim 2, characterized in that the surface is modified by embossing. 6. The method for marking according to claim 2, characterized in that the surface is modified by electrospark machining. 7. The method for marking according to claim 2, characterized in that as a marking material is used a label with a selected area of a three-dimensionally patterned material, such as a porous material having capillary features. 8. The method for marking articles according to any of claims 1-7, characterized in that generating private keys, data encrypting and data storing is effected in a remotecontrol center; applying the image, scanning the resulting image and applying the encrypted code is performed by a marking means; the marking means transmits data on the image to the control center, while the control center transmits the encryption result to the marking means; data transfer between the marking means and the control center is effected through communication channels; 9. The method for marking articles according to any of claims 1-7, characterized in that generating private keys, data encrypting, generating a random image, applying the image on to the marked surface, reading the resulting image and applying the encrypted code on to the marked surface is performed by the marking means; data transferring to the control center is also effected by the marking means, while at least keys are transferred to the control center through the path ensuring confidentiality; the control center stores the keys and codes in the database. 10. The method for marking articles according to claim 4, characterized in that generating private keys; data encrypting and storing is effected in the remote control center; applying the image, modifying the surface texture with the applied image, scanning the resulting image and applying the code is performed by the marking device; data exchange between the marking means and the control center is performed over communication channels. 11. The method for marking articles according to claim 1, characterized in that generating private keys; data encrypting, as well as applying the image, scanning the resulting image and applying the code is performed by the marking device; the marking means transmits the data on the image to the control center, which stores them in the database; at least the keys are transferred to the control center by the path ensuring confidential transmission. 12. The method for identification, at an article checking terminal, of articles marked according to any of claims 1-11, comprising reading a marking image and transforming it into data reading an encrypted code; decrypting (recovery of the image data against the readout code); comparing the recovered data with the readout image data characterized in that an additional criterion of existence of a respective texture on the image is specified when identification, thereafter the image is readout. 13. The method for identification according to claim 11, characterized in that reading the marking image, reading the encrypted code and specifying the criterion of texture existence is effected at the checking terminal ; the readout image data and the readout encrypted code are transferred to the control center; decrypting (recovery. of the image data against the read-out code), comparing the recovered image with the data of the readout image is effected in the remote control center. 14. The method for identification according to claim 11, characterized in that reading the marking image, reading the encrypted code and specifying the criterion of texture existence is effected at the checking terminal ; the readout code data being transferred to the control center; decrypting (recovery of the image data against the read-out code) is effected in the remote center, and the recovered checking result is transmitted to the checking terminal ; comparing the recovered data with the data of the readout identification image is effected in the checking terminal. 15. The method for identification of articles according to any of claims 12-14, characterized in that errors are estimated in the process of comparing, and a decision is made on basis of a preset criterion. 16. A method for authentication and detection of counterfeited articles comprising the steps of: pre-marking of articles by applying a unique two-dimensional image on to the marking space; reading the resulting image, transferring data on the image to the remote control center; data encrypting; data storing in database ; re-reading the unique image at least in one of the remote checking terminals; data transfer to the control center, comparing the data with the data of storing in database, transferring to the checking terminal of comparing result, characterized in that a unique marking image is obtained by the following steps: generating a unique image as a random at least two-dimensional image; applying the generated random image to a surface having a texture with irregular parameters; reading the resulting image; transferring data on the readout image to the remote control center; generating private keys; encrypting the obtained unique image data by means of private keys; applying the resulting code on to the marking surface; storing the keys in the control center database; verifying the existence and the pattern of the texture on the marking surface in the checking terminal; and then test reading of the marking image and the applied code; transferring the code data to the control center; decrypting the code data on the and recovering the data on the readout image; transferring the recovered data to the checking terminal for comparing the recovered data with the data on the readout image and making decision on the authenticity of the article. 17. A method for authentication and detection of counterfeited articles comprising the steps of: pre-marking of articles by applying a unique two-dimensional image on to the marking space; reading the resulting image, transferring the image data to the remote control center; data encrypting; storing data in the control center database; re-reading the unique image at least in one of the remote checking terminals; data transfer to the control center; data comparing with the data stored in the database; transferring the result of comparing to the checking terminal; characterized in that a unique marking image is obtained by the steps of: generating a unique image as a random at least two-dimensional image; applying the generated random image to a surface having a texture with irregular parameters, reading the resulting image; transferring data on the readout image to the remote control center; generating private keys; encoding the obtained unique image data by means of private keys; transferring the encoded image to the marking station; applying the resulting code on to the marking surface; storing the keys in the control center database; verifying the existence and the pattern of the texture on the marking surface; and then test reading the marking image and the applied code; transferring the readout image data and the code to the control center; decrypting the code data and recovering the readout image data; comparing the recovered data on the image received after the check reading; transferring the results of comparing to the checking terminal. 18. The method for authentication according to claims16, 17, characterized in that the data on the performed tests are stored in the control center; the number of the same code tests being summarized, and when the set value is exceeded, a signal warning on the exceedence is produced. 19. The system for authentication of articles according to claim 1, comprising a marking means, including a printer, a printer control device, a readout device, an image processing unit, a communication means; and a remote processing and storage center, comprising, a key generating unit, an encrypting/decrypting unit, a memory unit, a compare facility, and blank parts for labels, characterized in that the marking device further includes a random image generating device, means for applying an encrypted code; and as blank parts for labels are used substrates made of material having a texture with