RU154758U1 - DEVICE FOR ENERGY-INDEPENDENT STORAGE AND TRANSMISSION OF FISCAL DATA IN A PROTECTED CORRECTED VIEW - Google Patents

Abstract

A device for volatile storage and transmission of fiscal data in a secure, uncorrectable form, comprising a housing with a main port for interaction of the claimed device with cash registers, with an information port for interaction with external information systems and (or) devices, using wired and wireless communication channels, inside the case there are placed in series connected via the internal bus: central processor, non-volatile fiscal memory block, protection block, control For the authenticity and integrity of fiscal data, an external interaction unit, a real-time clock that provides registration of information on current time values that can be synchronized with the unified coordinated time scale UTC (SU) of GLONASS and GPS satellite navigation systems, while the protection and authenticity control units and fiscal data integrity is also connected to the real-time clock.

Description

The utility model relates to the field of computer technology, namely to a device for volatile storage, protection, authentication and integrity of fiscal data.

The device is designed to interact with cash registers (cash registers, check printers, electronic computers, software and hardware complexes, POS-terminals, etc. - hereinafter CCP), in order to ensure registration, storage and transmission of fiscal data in protected uncorrected form.

The claimed utility model receives, processes, and records fiscal data in a secure, non-volatile form, their long-term storage in non-volatile memory, as well as the transmission of fiscal data in a secure non-volatile form via wired and wireless communication channels.

Known patent RU 2106015 C1, for the invention "Method for controlling the revenue of electronic cash registers and system", IPC G07G 1/00, publ. 02/27/1998, which describes the control over the revenue of electronic cash registers, based on the registration of information and its accumulation by means of a fiscal memory unit with the exception of the possibility of changing, entering information into a computer device for subsequent processing of information, the identification code of the non-volatile portable storage device is sent through the communication channel to the fiscal memory unit of the corresponding electronic cash register, in which it is compared with the predetermined one and, if they coincide, the information is transmitted data transmission through a communication channel to a non-volatile portable storage device, while the fact of access is recorded and this information is also transmitted, the information transferred from the fiscal memory blocks of electronic cash registers is stored in an independent portable storage device, information stored in the non-volatile portable is transmitted over the communication line storage device, and enter into a computer device when identifying the code of the specified storage device. The disadvantage of this invention is the lack of protection and control of fiscal data, i.e. no data encryption procedure is provided. Known application RU 2000121955 A, for the invention "A method of controlling the operation of a cash register by registering information and a cash register", MGZH G07G 1/12, publ. 08/20/2002, which describes a functioning control device containing a processor with information buses, a keyboard and a receipt printer, and a functioning control device made in the form of an electronic control tape (ECL), which is an electronic board containing its own processor connected via an I / O adapter to KKM processor, special software and non-volatile mass storage device. The disadvantage of this invention is the lack of protection and control of fiscal data, i.e. no data encryption procedure is provided.

The technical result is the provision of protection, control of the authenticity and integrity of fiscal data during their processing, storage and transmission via communication channels.

To obtain the technical result, it is proposed to use the design of a device for receiving, processing, recording and volatile storage and transmission of fiscal data in a secure, unadjustable form made in the form of a housing with a main port for interaction of the claimed device with cash register equipment, and with an information port for interaction with external information systems and (or) devices using wired and wireless communication channels.

Inside the case there are placed in series connected via the internal bus: central processor, non-volatile fiscal memory block, protection, authenticity and fiscal data integrity control unit, external interaction unit, real-time clock, providing information on current time values synchronized with the unified coordinated time scale UTC (SU) of GLONASS and GPS satellite navigation systems.

A brief description of the drawings.

The figure 1 shows a block diagram of a device for volatile storage and transmission of fiscal data in a secure, uncorrectable form (hereinafter referred to as the device).

The device includes five main functional blocks:

1. The central processor;

2. Non-volatile fiscal memory block;

3. The block of protection, control of the authenticity and integrity of fiscal data (hereinafter referred to as the block of protection of fiscal data);

4. Block of external interaction;

5. Real-time clock block.

The claimed technical result is achieved by the fact that the cash register equipment initiates the transfer of data of the cash document (check, report) to the central processor of the device. The central processor of the device, having received an information packet containing the data of the cash document, sends the data to the fiscal data protection unit via the internal bus, which in turn requests the time stamp (date and time) from the real-time clock, and based on the data of the cash document information about the value of the current time, using the cryptographic conversion algorithm (any cryptographic algorithm known from the prior art), generates a cryptographic verification code (yes it - CCP) cash instruments. In addition, at this stage, the fiscal data protection unit forms a pass-through, continuously increasing PDA number. The generated PDA corresponding to the parameters of the cash document, the serial number of the PDA and the fixed values of the date and time of the fiscal transaction are transferred from the device back to the cash register equipment, for printing, both as part of a cash document in the process of processing it, and as part of a control tape for control the authenticity of fiscal operations.

Upon completion of this stage, a cash document with a time stamp, a PDA and a PDA serial number (it can also be considered as a serial number of an information packet containing a cash document data) is transmitted via an internal bus to a non-volatile fiscal memory block that archives and stores this information packet in a protected uncorrectable form.

The presence in information packages containing data of a cash document (data on a fiscal transaction) time stamp and cryptographic verification code calculated using a cryptographic algorithm and a continuous, continuously increasing PDA number (serial number of an information package containing data of a cash document) provides protection against distortion (correction) and the substitution of stored and transmitted data on fiscal transactions.

The real-time clock provides the formation and storage of a time scale synchronized with the unified coordinated time scale UTC (SU) of the GLONASS and GPS satellite navigation systems, as well as the issuance, upon request, of the fiscal data protection unit, the current time values for recording the time and date of the indicated device stages with cash documents and for further (if necessary) monitoring and checking the date and time displayed on the receipt tape printed by cash registers, for I am authenticating fiscal transactions.

The central processor of the device provides the following functions:

- providing a protocol for the interaction of the claimed device with cash registers through the main port (via one of the standard interfaces - I ² C, RS-232, etc.);

- providing protocols for interaction with the fiscal data protection unit;

- providing protocols for interaction with a non-volatile fiscal memory block;

- providing communication protocols with an external interaction unit.

Non-volatile fiscal memory block provides non-volatile, long-term storage of data on cash transactions, shift totals and other information. Data blocks are stored in the form of information packets containing: data of a cash document (check, report), time stamp of a fiscal operation, cryptographic verification code (PDA) calculated on the basis of two previous parameters and PDA serial number.

The fiscal data protection unit provides a protocol for interacting with the real-time clock unit, generating a continuous, continuously increasing PDA number, calculating the PDA value in accordance with the cryptographic algorithm, and storing cryptographic keys in a protected area.

The external interaction unit provides the ability to transfer data from the claimed device to an external network using both wired and non-wired data transmission channels (GSM / Bluetooth / WiFi / Ethernet, etc.) (any of the information transfer protocols or a combination thereof , any method of data transfer).

The real-time clock unit provides the formation and storage of a time scale synchronized with the unified coordinated time scale UTC (SU) of the GLONASS and GPS satellite navigation systems, as well as issuing, at the request of the fiscal data protection unit, the current time values. One of the ways to implement such a system is a microcontroller, a GPS / GLONASS module (or similar), an autonomous power source (if necessary), a receiving antenna.

The main objective of the claimed utility model is to ensure the registration, storage and transmission of fiscal data through communication channels in a form protected from correction (change) in real time.

During operation, the device of volatile storage and transmission of fiscal data in a secure, unadjustable form registers, stores and transfers to the external information systems (devices) the information contained in the cash document (check, report), adding to it the time parameters (date, time) of the creation of the cash document and a cryptographic verification code calculated on the basis of the obtained data, having a continuous increasing sequence number.

Protection from distortion (correction) and substitution of stored and transmitted data on fiscal operations in the claimed device is ensured by the combination of the following information protection methods:

- the formation of a time stamp based on a time scale synchronized with the unified coordinated time scale UTC (SU) of the GLONASS and GPS satellite navigation systems;

- calculation of a cryptographic verification code (CCP) based on the data of the cash document and the time of registration of the cash document (fiscal operation), using the cryptographic algorithm;

- calculation of a continuous, continuously increasing CPC number (serial number of an information package containing data of a cash document);

- the presence in the information package containing the cash document data (fiscal data) of the time stamp of the cash document (fiscal transaction), the cryptographic verification code (CCP) and the serial number of this information package (CCP number);

- the lack of the ability to retrieve a private cryptographic key, with which a cryptographic verification code is generated, due to technological solutions used in the fiscal data protection unit;

- the absence of the possibility of distortion (correction) or substitution of the cryptographic algorithm, with the help of which a cryptographic verification code is generated, due to technological solutions used in the fiscal data protection unit;

- the lack of the possibility of distortion (correction) or substitution of the operation algorithm of the claimed device through external interaction ports (main and information port), due to technological solutions used in the claimed device;

- the lack of the possibility of concealing the fact of unauthorized physical access to circuit elements of the claimed device, due to technological solutions used in the claimed device (filling the case and printed circuit board with a compound) and the presence of elements revealing the facts of such access (seal or self-destructing sticker).

Summarizing the above, it can be argued that it is impossible to discreetly remove information about a cash document from the archive, since all cash documents stored in the archive have end-to-end numbering. It is impossible to imperceptibly correct or replace the information contained in the cash document, since the private cryptographic key with which the cryptographic verification code (CCP) is generated is not initially known. The impossibility of calculating the cryptographic key by mathematical methods is ensured by the robustness of the cryptographic algorithm used for calculating the PDA, while the presence of a time stamp will not allow for the “retroactive” generation (selection) of the cryptographic verification code, addition or re-generation of the cash register documents from previously accumulated data. In addition, the design of the claimed device and the technical solutions used in its design do not allow distortions (adjust) or replace the algorithm of its operation.

Claims (1)

A device for volatile storage and transmission of fiscal data in a secure, uncorrectable form, comprising a housing with a main port for interaction of the claimed device with cash registers, with an information port for interaction with external information systems and (or) devices, using wired and wireless communication channels, inside the case there are placed in series connected via internal bus: central processor, non-volatile fiscal memory block, protection block, control For the authenticity and integrity of fiscal data, an external interaction unit, a real-time clock that provides registration of information on current time values that can be synchronized with the unified coordinated time scale UTC (SU) of GLONASS and GPS satellite navigation systems, while the protection and authenticity control units and fiscal data integrity is also connected to the real-time clock.

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