RU2287854C1 - Method of marking material information-carrying medium and its verification - Google Patents

Abstract

FIELD: information security facilities and verification which is stored on a material medium.

SUBSTANCE: control information is generated in digital form which uses all information or its part stored on the material medium. Control information is converted into image using sound-recording and soft hardware means by converting voice message into image, with voice message corresponding to control information. Information verification is executed by converting image to synthesized voice message and comparing the contents of visually receipted information and audibly interpreted information which is contained in the synthesized voice message.

EFFECT: increased reliability, simplified marking of material information-carrying medium and its verification.

7 cl, 2 dwg

Description

The invention relates to the field of means of protection and verification of information contained on a physical medium, in particular, in the process of creating and processing legally significant documents, in particular notarial, title, executive, securities, etc.

There is a method of marking a material information carrier and its verification, which consists in the fact that all of the marked information or part thereof is converted to digital form, signed with an electronic digital signature (EDS) of the marker and determined as a control. Then the control information in digital form, the EDS and the public key to verify the EDS are converted into a bar code, which is printed on the document. When verifying the marked information, the bar code is read, the control information in digital form, the electronic digital signature and the public key for verifying the digital signature are extracted. The reading of the bar code and its conversion to digital form is carried out using a scanner. The authenticity of the EDS is checked using a personal computer using the standard EDS verification algorithm (GOST R 34.10-94) using the public key to verify the EDS. If the digital signature is genuine, then the control information from the bar code is displayed on a computer screen or printed on paper and visually compared with the information presented in the document. Based on the results of the comparison, a conclusion is drawn about the authenticity of the information (RF patent 2165643, G 06 K 9/00, 04/19/2000).

This method has the disadvantage that during the formation of control information, which is then entered into the barcode, during its scanning from a material medium, even with the most modern software and hardware, it is possible that this information will be distorted (errors in reading and recognition of individual characters). As a result, the digital signature of the marker may be associated with initially distorted control information, and not with the original, which ultimately will lead to errors in the visual verification of the source information. This can happen even in spite of the fact that the digital signature generated in the process of public key control and control information previously placed in the barcode will coincide with the digital signature of the marker. Therefore, the need to add additional control information and a public key to verify the digital signature in addition to the EDS in the physical medium actually complicates the method without increasing its reliability. In addition, the visualization of control information in various text editors that were not previously determined can also lead to inaccurate verification.

The technical problem to which this invention is directed is to increase reliability and simplify marking of a material information carrier and verification of the information contained therein.

The specified technical problem is solved due to the fact that in the method of marking a material information carrier and its verification, which includes generating digital information of the control information using all the information contained in the material medium, or a part thereof, converting the control information into an image and applying it to the material the carrier, the image is formed on the same or on an additional material medium using sound recording and software and hardware by converting to authentic voice message corresponding to the content of the control information is expressed, and information is verified by converting the image using software, hardware and sound reproducing means into a synthesized speech message and comparing the contents of visually perceived information and audibly perceived information contained in the synthesized speech message. Additionally, in the described method, an authentic voice message may be one or more code words or phrases. Additionally, in the described method, the conversion of the image into a synthesized voice message can be carried out by scanning the image and further processing it using a scanner, a computer equipped with a sound card and sound reproducing means.

Additionally, in the described method, the conversion of the image into a synthesized voice message can be carried out by photographing the image using a mobile phone equipped with a camera, transmitting the image to the appropriate server, and then receiving the synthesized voice message from the specified server to the specified mobile phone.

Additionally, in the described method, the image can be either binary or multilevel with shades of the same color or multicolor. Additionally, in the described method, either paper, or synthetic material, or metal, or a natural mineral, or other material having on its surface a portion sufficient for applying an image can be used as a material carrier.

Additionally, in the described method, the image on the material medium can be made in the form of a relief.

In FIG. Figure 1 shows an example of a material information medium (a text document on a paper medium - "payment order") with an image printed on it, which is a converted authentic voice message corresponding to the content of the control information present on the document. In FIG. 2 is a variant of a block diagram of equipment for implementing the method.

The method is as follows (for example, a text document on a paper medium).

Using a personal computer 1 and a standard software product (for example, "1C-accounting") form a document. In FIG. 1, 2 indicates an example of such a document (payment order). The information field 3 of document 2 contains semantically perceptible information - text information that includes all the details necessary for this type of document. At the same time, an authentic voice message corresponding to the semantic content of all or part of the visually perceptible information contained in the information field 3 (control information) is introduced into the personal computer 1 using the microphone 4 or otherwise. In FIG. 1 control information is circled by a dashed line. The personal computer 1 contains a set of standard software and hardware elements - means 5 for digitizing the acoustic signal, sound editor 6, means 7 for imaging. In a personal computer 1, an authentic voice message is converted into an image in the form of a file of any known graphic format (for example, * .bmp, * tif, etc.).

Then the document 2 is printed using the printer 8 in such a way that in one of its areas contains the information field 3, and in the other area - the image 9, which is a converted authentic voice message. Thus, document 10 marked with image 9 is formed. Image 9 can be printed on a material medium both in binary form and in multi-level with shades of the same color or multicolor version. The voice message may be one or more code words or phrases. With this use, it is advisable to indicate the keywords of the document. So, if the document is a contract, then you can specify the amount of the contract, the duration of the contract, full name responsible executor, etc. If a payment order, then the amount of payment, payee, etc.

Upon receipt by the addressee of a document thus formed, it is entered, for example, into the personal computer 11 by means of a scanner 12. In the personal computer 11, the image 9 is converted by software into a file of any known audio format (for example, * voc or * wav), which is then using sound reproducing means 13 is reproduced in the form of a synthesized speech message. Thus, the addressee is able to compare the visually perceived information on the information field 3 with the audibly perceived and, therefore, verify the document.

The method can also be implemented in such a way that in the process of preparing the document, the image, which is a converted authentic voice message, is applied not to the material medium that contains visually perceptible information (for example, information field 3) to be verified, but to an additional, physically unrelated to the main one (for example, print the image on a separate sheet of paper or send it to the addressee in electronic form). The verification process in this case occurs in the same way as in the case of the joint application of the image and the information field 3 on one material carrier.

It should be noted that the inevitable distortion of information during double conversion practically does not affect the success of verification, since in this case they are perceived as insignificant noise interference that does not affect the possibility of an unambiguous understanding of the meaning of the synthesized speech message. So, when using a binary image, calculated on the basis of a short-term spectral analysis of an acoustic signal with optimal cell parameters of a time-frequency grid of 8 Hz · 8 ms and printed on paper by a printer, and then read by a scanner with a resolution of 1200 dpi, a telephone or comparable quality is ensured sound synthesized voice message. When used as the initial multi-level image, the sound quality becomes almost indistinguishable from the auditory perception of an authentic speech message.

It is known that hearing is the second most important channel for perceiving information after sight and a faster analyzer that allows you to perceive an order of magnitude faster dynamics than perceiving vision, while each person and each word or phrase uttered corresponds to their individual sound and their own unique visualization. Therefore, the advantage of introducing an authentic voice message converted into an image into documents over other means of protecting documents is also due to the fact that the addressee is able not only to establish correspondence (or inconsistency) to each other with visually and audibly perceived information, but also to recognize (or not recognize) the voice the sender of the document, which is an additional and essential means of verification.

The method can also be implemented when creating and sending a document to the addressee in electronic form. In this case, printing and scanning a document is not required. Visually perceived information in the main area of the document can be displayed on the monitor screen, and the synthesized voice message converted from the image is directly reproduced using, for example, a personal computer from a sound card and sound reproducing means.

The method can also be implemented using currently widely used mobile telephony. So, the recipient who has a mobile phone with a built-in camera and received a document with the image of an authentic voice message can take a picture of the image and transfer it to the corresponding server of the sender, from where he will receive a synthesized voice message by phone, based on which he can make a conclusion about the authenticity of the document (or, on the contrary, about his falsification).

Claims (7)

1. A method of marking a material information medium and its verification, including the digital generation of control information using all the information contained on the material medium, or part thereof, converting the control information into an image and applying it to a material medium, characterized in that the image is formed on the same or on an additional material medium with the help of sound recording and hardware-software means by converting a voice message into an image, respectively stvuyuschego content control information and the verification information is carried out by converting the images using firmware and reproducing means into a synthesized voice message and comparing the content of information visually perceptible and auditory perceivable information contained in the synthesized speech signal. 2. The method according to claim 1, characterized in that the voice message is one or more code words or phrases. 3. The method according to claim 1, characterized in that the image is converted into a synthesized voice message by scanning the image and further processing it using a scanner, a computer equipped with a sound card and sound reproducing means. 4. The method according to claim 1, characterized in that the image is converted into a synthesized voice message by photographing the image using a mobile phone equipped with a camera, transmitting the image to an appropriate server, and then receiving the synthesized voice message from the specified server to the specified mobile phone. 5. The method according to claim 1, characterized in that the image is either binary or multi-level with shades of the same color or multi-color. 6. The method according to claim 1, characterized in that the material carrier is either paper, or a synthetic material, or metal, or a natural mineral, or other material having on its surface a portion sufficient to apply an image. 7. The method according to claim 1, characterized in that the image on the material medium is made in the form of a relief.

Images