RU2643624C1 - Accounting and controlling system with mimic protected data exchange - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: accounting and controlling system with the mimic protected data exchange consists of an identifier that contains a transceiving antenna of the identifier, a transceiving unit of the identifier, an interface of the identifier input/output, a microprocessor of the identifier, a random access memory RAM of the identifier, a read-only memory ROM of the identifier, a programmable read-only memory PROM of the identifier, a vibrating transducer of oscillations into an electrical signal of the identifier, a rectifier of the identifier, a filter of the identifier, control and accounting stations CAS, each of which contains a transceiving antenna of the CAS, a transceiving unit of the CAS, an interface of the CAS input/output, a microprocessor of the CAS, RAM of the CAS, ROM of the CAS, PROM of the CAS, a pseudo-random sequence generator PRS of the CAS, a cycle counter of the CAS, a comparison device of the CAS, a power supply of the CAS, an initiating CAS that contains a transceiving antenna of the initiating CAS, a transceiving unit of the initializing CAS, an interface of the initiating CAS input/output, a microprocessor of the initiating CAS, RAM of the initiating CAS, ROM of the initiating CAS, PROM of the initiating CAS, a random number generator RNG of the initiating CAS, a PRS generator of the initiating CAS, a power supply of the initiating CAS.

EFFECT: improving the mimic protection of the data exchange.

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Description

Technical field

The invention relates to the field of registration or recognition of rolling stock, accounting for the movement of goods, especially in freight railway transport, and can be used, for example, to control the movement of bulk railway tanks.

State of the art

A well-known system of accounting and control (RF Patent No. 2317909, published on 02.27.2008), consisting of the control and accounting stations installed at monitoring sites and at controlled objects identifiers. Each control and accounting station contains a reader, the output of which through the controller is connected to information display and input-output devices, and each identifier contains an antenna connected to a signal receiver, the output of which through the input-output interface is connected to one microprocessor I / O bus, others the information buses of which are connected respectively to random access memory, read only memory and flash memory, in which each identifier op comprises a vibratory transducer vibrations into an electrical signal, the rectifier and filter, rectifier and filter connected to the output of the vibratory transducer, a filter output is connected to the enabling input of the microprocessor, and the rectifier output - to the power bus identifier.

One of the disadvantages of this system is the use of encryption tools with low cryptographic strength. The use of encryption does not exclude external threats associated with unauthorized access to the radio channel (viewing and replacing data) (Agafin S.S. LW-cryptography: ciphers for RFID systems // Security of Information Technologies. - 2011. - No. 1. - S. 30-33). Developing new encryption protocols or upgrading existing ones is a long and expensive process. Another method of increasing security can be the use of a data signature with a unique identifier that can confirm the authenticity (security) of the data (Mikheev V.A., Utkin A.V., Vinogradov D.A. Information security problems in RF ID systems of high complexity, built on the principles of EPCglobal // News of SFU. Technical sciences. - 2012. - No. 12 (137). - S. 34-39). Using cryptographic-based electronic signatures is unnecessarily expensive. An alternative method of signing data can be an approach implemented in a device that consists of a control unit containing a control unit, a next-step codogram generation unit, a first pseudorandom sequence generator (PSP-1 generator), a modulator block, a second pseudo-random sequence generator (PSP- generator 2), a switchboard containing a switching unit with N communication lines, N comparison units according to the number of monitored objects, each of which consists of a storage device of the generator value PSP-2 of the control unit (memory value of the generator PSP-2 of the control unit), block of logical operations XOR (logical operation "exclusive OR"), consisting of n blocks XOR, according to the number of bits in the binary representation of the codograms of the first and second pseudorandom sequences, memory values of the PSP-2 generator of the controlled objects (memory values of the PSP-2 generator of the controlled objects), the unit for monitoring the health of the object and the controlled object, consisting of a memory block of the next clock cycle, a comparison unit, a demodulator, a block and memory, matching device, modulator, generator PSP-2 (RF patent No. 2520413 "DEVICE FOR IMPROTECTION OF A GROUP OF MONITORED OBJECTS, BASED ON XOR LOGIC", publ. 06/27/2014).

Disclosure of invention

The task of the invention is to develop a system of accounting and control with simulated data exchange.

The technical result that can be obtained using the present invention is to increase the security of data exchange.

The technical result is achieved using a metering and control system with simulated data exchange, consisting of an identifier (Fig. 1) containing a transceiver antenna 1, a transmitter / receiver unit 2, an input / output interface 3, a microprocessor 4, and random access memory (RAM) 5 , read-only memory (ROM) 6, reprogrammable read-only memory (ROM) 7, a vibration converter 8 of oscillations into an electrical signal, a rectifier 9, a filter 10, control and accounting stations (Fig. 2), each of which contains a transceiver antenna 11, a transmit-receive unit 12, an input-output interface 13, a microprocessor 14, RAM 15, ROM 16, ROM 17, a pseudo-random sequence generator (SRP) 18, a cycle counter 19, a comparison device 20, a power supply 21, initializing control and accounting station (Fig. 3), containing the transceiver antenna 22, the transceiver unit 23, the input-output interface 24, the microprocessor 25, RAM 26, ROM 27, the ROM 28, the random number generator (RNG) 29, the generator PSP 30 power supply 31,

moreover, the output of the transceiver antenna 1 is connected to the first input of the transceiver unit 2,

the first output of the transmit-receive unit 2 is connected to the input of the transmit-receive antenna 1, the second output of the transmit-receive unit 2 is connected to the first input of the input-output interface 3,

the first output of the I / O interface 3 is connected to the third input of the transceiver unit 2, the second output of the I / O interface 3 is connected to the first input of the microprocessor 4,

the first output of the microprocessor 4 is connected to the third input of the input-output interface 3, the second output of the microprocessor 4 is connected to the first input of the ROM 7, the third output of the microprocessor 4 is connected to the first input of the RAM 5,

the output of RAM 5 is connected to the fifth input of the microprocessor 4,

the output of the ROM 6 is connected to the fourth input of the microprocessor 4,

the output of the ROM 7 is connected to the third input of the microprocessor 4,

the output of the vibration transducer 8 of the oscillations into an electrical signal is simultaneously connected to the input of the rectifier 9 and to the input of the filter 10,

the output of the rectifier 9 is simultaneously connected to the fourth input of the transmitting and receiving unit 2, to the fourth input of the input-output interface 3, to the sixth input of the microprocessor 4, to the second input of RAM 5, to the input of the ROM 6, to the second input of the ROM 7

the output of the filter 10 is simultaneously connected to the second input of the transmitting and receiving unit 2, to the second input of the I / O interface 3, to the second input of the microprocessor 4,

the output of the transceiver antenna 11 is connected to the first input of the transceiver unit 12,

the first output of the transmit-receive unit 12 is connected to the input of the transmit-receive antenna 11, the second output of the transmit-receive unit 12 is connected to the first input of the input-output interface 13,

the first output of the I / O interface 13 is connected to the second input of the transceiver unit 12, the second output of the I / O interface 13 is connected to the first input of the microprocessor 14,

the first output of the microprocessor 14 is connected to the second input of the input-output interface 13, the second output of the microprocessor 14 is connected to the first input of the ROM 17, the third output of the microprocessor 14 is connected to the first input of the RAM 15, the fourth output of the microprocessor 14 is connected to the first input of the cycle counter 19,

the output of RAM 15 is connected to the fifth input of the microprocessor 14,

the output of the ROM 16 is connected to the fourth input of the microprocessor 14,

the first output of the ROM 17 is connected to the third input of the microprocessor 14, the second output of the ROM 17 is connected to the first input of the comparison device 20,

the first output of the PSP generator 18 is connected to the third input of the comparison device 20, the second output of the PSP generator 18 is connected to the third input of the cycle counter 19, the third output of the PSP generator 18 is connected to the third input of RAM 15,

the output of the loop counter 19 is connected to the first input of the generator PSP 18,

the output of the comparison device 20 is connected to the sixth input of the microprocessor 14,

the output of the power supply 21 is simultaneously connected to the third input of the transmitting and receiving unit 12, to the third input of the input-output interface 13, to the second input of the microprocessor 14, to the second input of RAM 15, to the input of the ROM 16, to the second input of the ROM 17, to the second input the generator PSP 18, to the second input of the loop counter 19, to the second input of the comparison device 20,

the output of the transceiver antenna 22 is connected to the first input of the transceiver unit 23,

the first output of the transmit-receive unit 23 is connected to the input of the transmit-receive antenna 22, the second output of the transmit-receive unit 23 is connected to the first input of the input-output interface 24,

the first output of the I / O interface 24 is connected to the second input of the transceiver unit 23, the second output of the I / O interface 24 is connected to the first input of the microprocessor 25,

the first output of the microprocessor 25 is connected to the second input of the input-output interface 24, the second output of the microprocessor 25 is connected to the first input of the ROM 28, the third output of the microprocessor 25 is connected to the first input of the RAM 26, the fourth output of the microprocessor 25 is connected to the first input of the RNG 29,

the output of RAM 26 is connected to the fifth input of the microprocessor 25, the output of the ROM 27 is connected to the fourth input of the microprocessor 25, the output of the ROM 28 is connected to the third input of the microprocessor 25, the output of the RNG 29 is connected to the first input of the generator PSP 30, the output of the generator PSP 30 is connected to the second input of RAM 26, the output of the power supply 31 is simultaneously connected to the third input of the transmitting and receiving unit 23, to the third input of the I / O interface 24, to the second input of the microprocessor 25, to the third input of the RAM 26, to the input of the ROM 27, to the second input of the ROM 28, the second input of the RNG 29, to Tue the right input of the PSP 30 generator.

Brief Description of the Drawings

In FIG. 1 is a block diagram of an identifier; FIG. 2 is a block diagram of a control station; FIG. 3 is a block diagram of an initialization accounting station; FIG. 4 is a codogram of a transmitted message; FIG. 5 is a diagram of the assignment of serial numbers to control and accounting stations.

The implementation of the invention

The accounting and control system operates as follows.

In the manufacture of a vehicle (railway carriage), an identifier is attached to its bottom or frame, made in the form of a one-piece unattended module, the attempt to open it leads to its destruction (not shown in the drawings). At the same time, in the manufacture of the module, a unique number is entered into its permanent memory 6, by which it is possible to determine the manufacturer, its own weight, its affiliation, and the serial number of the car.

The process of obtaining the identifier supply voltage by a vibration converter 8 of vibrations into an electric signal is similar to that described in the prototype (see RF patent No. 2317909). The supply voltage from the vibration converter 8 of the oscillations into an electrical signal is supplied to the inputs of the rectifier 9 and the filter 10. The rectifier 9 provides power to the electronic circuit of the identifier, and the filter 10 analyzes the voltage supplied to its input by frequency and amplitude. This eliminates the external unauthorized impact on the identifier.

Control and accounting stations (KUS), combined by means of communication, receive power from an external energy source and can operate continuously or as needed. When the station is operating, its transceiver antenna 11 constantly emits an encoded radio signal. When the vehicle is moving, the identifier receives power from the output of the rectifier 9, and the filter 10 selects the signal from the output of the vibration converter 8 of the oscillations into an electrical signal in frequency and amplitude. The output of the filter 10 is connected to the second inputs of the receiving-transmitting unit 2, input / output interface 3, and microprocessor 4, therefore, the identifier can operate only when the vehicle is moving at a given speed: if the speed is different from the calculated one, then the amplitude of voltage fluctuations in the vibration transducer 8 fluctuations in the electrical signal will change, decreasing compared to the calculated one. Frequency control is necessary to exclude the possibility of influencing the identifier by an external field in order to change the information contained in its reprogrammable read-only memory 7.

It should be noted that until the transceiver antenna 1 of the identifier falls into the field of the transceiver antenna 11 of the control panel, the identifier does not consume energy from the vibration transducer 8 of the oscillations in the electrical signal. This allows you to determine its parameters using the filter 10 with high accuracy. When the identifier falls into the coverage area of the control and accounting station, if there is an enable signal from the output of the filter 10, the necessary information is exchanged between the control system and the identifier.

Information exchange can be carried out in two modes: 1) initialization mode, 2) operating mode.

The first mode of information exchange (initialization mode) is characterized by the fact that at the point of departure, the initializing control switch with the help of the RNG 29 generates a random number that initializes the generator PSP 30. Next, the value of the memory bandwidth passes through RAM 26 to the microprocessor 25, which simultaneously receives zero ordinal the number of the initializing control panel, the value of which is pre-recorded in the ROM 27. The generated codogram through the I / O interface 24, the transmit-receive unit 23 and the transmit-receive antenna 22 is recorded in the ROM 7 identifiers passing successively receive antenna 1, the receiving-transmitting unit 2, an input-output interface 3, the microprocessor 4.

It should be noted that all KUS, including the initializing one, is assigned its own unique serial number, going in increasing order from No. 0 to No. n (Fig. 5). These values are recorded in the ROM 16 of the control panel, and a zero value is recorded in the ROM 27 of the initializing code.

After that, the system begins to function in the second mode of information exchange (operating mode), which consists in the fact that the KUS along the entire route of the train can extract a unique number from ROM 6 of any identifier for accounting and control of rolling stock. When transmitting this information from the identifier of the rolling stock to the control panel, the SRP value and the value of the serial number of the control panel from the identifier ROM 7 are added to it (Fig. 4). After that, the transmitted information is encrypted and sent to the KUS, where the decryption takes place. The codogram in the control panel is divided into a unique identifier number, the added SRP value and the serial number of the control panel. The added SRP value is sent to the EEPROM 17. The serial number of the CSC is supplied to the cycle counter 19, which at each iteration of the cycle will instruct the generator of the CPS 18 to generate the next value of the CPS until the value of the cycle counter 19 reaches the sequence number of the CSC stored in codogram (Fig. 4), which came from the verified identifier. This value of SRP should be identical to the value of SRP, which comes from the identifier, since the functions of generating SRP in all KUS, including the initializing one, are identical. After that, the SRP value from the SRP generator 18 generated in the control panel, and the SRP value received from the verified identifier are compared in the comparison device 20. In case of coincidence, the microprocessor 14 gives a command to generate the next SRP value based on the serial number contained in the ROM 16 of the current KUS. After that, the new value of the memory bandwidth and the serial number of the CSC are recorded in the ROM 7 of the verified identifier. This procedure is repeated on each KUS. If, however, the SRP values from the identifier and the SRP of the current station do not coincide, then an alarm signal is issued that is transmitted to the microprocessor 14, which may contain connected information transmission and display means and units that are common for various computer devices (their availability and implementation does not affect the proposed technical solution and therefore is not indicated on the drawings). An authorized person (operator) who services these computerized devices can determine where the failure occurred by the number of the CSC. In this case, using the serial number of the current control system, a new SRP value is generated, which is recorded in the ROM 7 of the identifier being verified. Thus, in the ROM block 7 of the verified identifier, a unique SRP value, which is different from the previous values, will always be stored.

It should be noted that access to the identifier of the proposed accounting and control system outside the real control zone is not possible if the vehicle is stationary, since the identifier being verified does not work simply due to a lack of supply voltage, and if it moves at a speed different from the speed in the control mode station, the lack of an enable signal from the output of the filter 10 further prohibits the operation of the verified identifier and, therefore, eliminates unauthorized exposure to it.

The invention in comparison with the prototype and other technical solutions has the following advantage:

- increase the security of data exchange between the identifier and the control and accounting station through the use of memory bandwidth;

- in case of violation of imitation protection, the notification of the authorized person (operator) is carried out.

Claims (32)

Accounting and control system with simulated data exchange, consisting of an identifier containing an identifier transceiver antenna, an identifier transmit-receive unit, an identifier input-output interface, an identifier microprocessor, an identifier RAM random access memory, an identifier ROM read-only memory, a read-only read-only memory ROM device identifier, vibration converter of vibrations into an electrical identifier signal, rectifier identifier, identifier filter, KUS control and accounting stations, each of which contains a KUS transceiver antenna, KUS receiving-transmitting unit, KUS I / O interface, KUS microprocessor, KUS RAM, KUS ROM, KUS ROM, KUS pseudo-random sequence generator, counter KUS cycles, KUS comparison device, KUS power supply unit, initializing KUS, containing a transmitting and receiving antenna initializing KUS, transmitting and receiving unit initializing KUS, input-output interface initializing KUS, microprocessor ini ializiruyuschey LCPs, LCPs initializing RAM, ROM initialization LCPs, LCPs PROM initialization, the random number generator RNG initializing LCPs, LCPs initiating PRS generator, the power supply initialization LCPs, moreover, the output of the transceiver antenna of the identifier is connected to the first input of the transceiver unit of the identifier, the first output of the transceiver unit of the identifier is connected to the input of the transceiver antenna of the identifier, the second output of the transceiver unit of the identifier is connected to the first input of the I / O interface of the identifier, the first output of the identifier I / O interface is connected to the third input of the identifier transmit-receive unit, the second output of the identifier I / O interface is connected to the first input of the identifier microprocessor, the first output of the identifier microprocessor is connected to the third input of the identifier I / O interface, the second output of the identifier microprocessor is connected to the first input of the identifier ROM, the third output of the identifier microprocessor is connected to the first input of the identifier RAM, the identifier RAM output is connected to the fifth input of the identifier microprocessor, the identifier ROM output is connected to the fourth input of the identifier microprocessor, the output of the identifier ROM is connected to the third input of the identifier microprocessor, the output of the vibrational oscillation transducer into an electrical identifier signal is simultaneously connected to the input of the identifier rectifier and to the input of the identifier filter, the identifier rectifier output is simultaneously connected to the fourth input of the identifier transmit-receive unit, to the fourth input of the identifier I / O interface, to the sixth input of the identifier microprocessor, to the second input of the identifier RAM, to the identifier ROM input, to the second identifier ROM input, the output of the identifier filter is simultaneously connected to the second input of the transmitter-receiver unit of the identifier, to the second input of the identifier I / O interface, to the second input of the identifier microprocessor, the output of the transceiver antenna KUS is connected to the first input of the transceiver block KUS, the first output of the transmitting and receiving unit of the control panel is connected to the input of the transmitting and receiving antenna of the control panel, the second output of the receiving and transmitting block of the control panel is connected to the first input of the I / O interface of the control panel, the first output of the KUS I / O interface is connected to the second input of the KUS receiving-transmitting unit, the second output of the KUS I / O interface is connected to the first input of the KUS microprocessor, the first output of the KUS microprocessor is connected to the second input of the KUS I / O interface, the second output of the KUS microprocessor is connected to the first input of the KUS ROM, the third output of the KUS microprocessor is connected to the first input of the KUS RAM, the fourth output of the KUS microprocessor is connected to the first input of the KUS cycle counter, the output of RAM KUS is connected to the fifth input of the microprocessor KUS, the output of the ROM KUS is connected to the fourth input of the microprocessor KUS, the first output of the ROM CUS is connected to the third input of the microprocessor KUS, the second output of the ROM CUS is connected to the first input of the device for comparing the KUS, the first output of the PSP KUS generator is connected to the third input of the KUS comparison device, the second output of the PSP KUS generator is connected to the third input of the KUS cycle counter, the third output of the PSP KUS generator is connected to the third input of the KUS RAM, the output of the KUS cycle counter is connected to the first input of the PSP KUS generator, the output of the KUS comparison device is connected to the sixth input of the KUS microprocessor, the output of the KUS power supply is simultaneously connected to the third input of the KUS receiving-transmitting unit, to the third input of the KUS I / O interface, to the second input of the KUS microprocessor, to the second input of the KUS RAM, to the input of the KUS ROM, to the second input of the KUS ROM, to the second input generator PSP KUS, to the second input of the cycle counter KUS, to the second input of the device for comparing the KUS, the output of the transceiver antenna initializing the CSC is connected to the first input of the receiving-transmitting unit of the initializing CSC, the first output of the receiving-transmitting unit of the initializing control panel is connected to the input of the transmitting and receiving antenna of the initializing control panel, the second output of the receiving and transmitting block of the initializing panel is connected to the first input of the input-output interface of the initializing panel the first output of the input-output interface of the initializing KUS is connected to the second input of the receiving-transmitting unit of the initializing KUS, the second output of the input-output interface of the initializing KUS is connected to the first input of the microprocessor initializing the KUS, the first output of the microprocessor initializing the CSC is connected to the second input of the I / O interface initializing the CCP, the second output of the microprocessor initializing the CCP is connected to the first input of the ROM initializing the CCP, the third output of the microprocessor initializing the CCP is connected to the first input of RAM initializing the CCP, the fourth output is microprocessing input RNG initializing KUS, the RAM output of the initializing KUS is connected to the fifth input of the microprocessor initializing the KUS, the ROM output of the initializing KUS is connected to the fourth input of the microprocessor initializing the KUS, the output of the ROM of the initializing control panel is connected to the third input of the microprocessor initializing the control panel, the output of the RNG initializing the control switch is connected to the first input of the SRP generator initializing the control switch, the output of the generator of the SRP initializing KUS is connected to the second input of RAM initializing KUS, the output of the power supply of the initializing KUS is simultaneously connected to the third input of the receiving-transmitting unit initializing the KUS, to the third input of the I / O interface of the initializing KUS, to the second input of the microprocessor initializing the KUS, to the third input of RAM initializing the KUS, to the input of the ROM initializing the KUS, to the second EEPROM initializing the ACC, to the second input of the RNG initializing the ACC, to the second input of the generator CAP initializing the ACC.

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