CN103078874B - Be embedded with the remote-control intelligent gas meter of information security management module - Google Patents
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- CN103078874B CN103078874B CN201310038485.9A CN201310038485A CN103078874B CN 103078874 B CN103078874 B CN 103078874B CN 201310038485 A CN201310038485 A CN 201310038485A CN 103078874 B CN103078874 B CN 103078874B
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Abstract
The invention discloses a kind of remote-control intelligent gas meter being embedded with information security management module, belong to a kind of remote-control intelligent gas meter management aid, described remote-control intelligent gas meter comprises information security management module, described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor accesses the first data-interface respectively, second data-interface and FLASH memory, information security management module is carrying out authentication by data transmission module with selling when gas management system carries out exchanges data, ensure that the legitimacy of both communication, remote-control intelligent gas meter terminal master controller could must be communicated with outside by information security management module, after the present invention simultaneously embeds information security management module, it is by multiple communication transmission technology and bus interface compatible remote-control intelligent gas meter terminal master controller, and seamless access civil gas management system, realize remote-control intelligent gas meter dispersion and manufacture, unified management.
Description
Technical field
The present invention relates to an intelligent gas meter, in particular, the present invention relates generally to a kind of remote-control intelligent gas meter being embedded with information security management module.
Background technology
Remote-control intelligent gas meter needs real-time, safe and effective teledata switching channel to realize carrying out exchanges data with the gas management system of selling of gas company, the telecommunication mode wire communication used and radio communication two kinds, there is risk in these two kinds of communication modes in information security management.Wire communication mode, the modes such as main employing Optical Fiber Transmission, data line transfer and power line transmission, these transmission meanss all need the cable of complicated layout, in special geographical environment, these wirings can become quite difficulty, when cable go wrong or by people's reconfiguration after, the fail safe of transfer of data can not be guaranteed.Communication, main employing RF module, Zigbee module, WiFi module and bluetooth module etc. transmit, these wireless devices are easily subject to environmental interference in transmitting procedure, cause exchanges data mistake, when there is artificial destruction, data may be intercepted and captured, revised, and the fail safe of transfer of data can not be guaranteed.
The manufacturer of remote-control intelligent gas meter is a lot, each producer is different to the management method of remote-control intelligent gas meter, remote-control intelligent gas meter has independence to a certain extent, make gas company cannot accomplish just unified management in meaning, remote-control intelligent gas meter can not be guaranteed with the fail safe of the transfer of data of selling gas system.
Remote-control intelligent gas meter will realize and the exchanges data of selling gas system, need many intermediate link, as needed the remote transmission of data, need and the subsystems swap data etc. selling gas system, all there is uncertain destructive factor in the exchanges data of these intermediate links, causes the fail safe of transfer of data can not be guaranteed.
Under the above-mentioned data transmission security of appearance can not be guaranteed situation, owing to there is no effective data verification means in the master controller of remote-control intelligent gas meter, the identity of external data transmitting terminal can not get examining, data can not get effective verification, remote-control intelligent gas meter and main website is caused to sell gas management system out of control, therefore, for the hidden danger existing for above-mentioned remote-control intelligent gas meter, be necessary to do further improvement to it.
Summary of the invention
An object of the present invention is for above-mentioned deficiency, a kind of remote-control intelligent gas meter being embedded with information security management module is provided, with problems such as the information security management of expecting to solve remote-control intelligent gas meter of the prior art and management system thereof can not be guaranteed, thus eliminate the risk of information security management in gas company's operation.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of remote-control intelligent gas meter being embedded with information security management module provided by the present invention, comprise mechanical metering device, remote-control intelligent gas meter terminal master controller and data transmission module, described mechanical metering device is provided with combustion gas input port and combustion gas delivery outlet, and in mechanical metering device, electromechanical valve and electromechanical signal conversion device are at least installed, described electromechanical signal conversion device is by signal pre-processing circuit access remote-control intelligent gas meter terminal master controller, and electromechanical valve accesses described remote-control intelligent gas meter terminal master controller by electromechanical valve control circuit, described remote-control intelligent gas meter also comprises information security management module, described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor accesses the first data-interface respectively, second data-interface and FLASH memory, wherein:
Described first data-interface access data transport module, communicates with the unique data of data transmission module for performing remote-control intelligent gas, and transmits it to processor when receiving the external data coming from data transmission module; Described data transmission module directly receives and comes from long-range external data of selling gas management system;
Described FLASH memory is for storing control in information security management module and documentor;
Described second data-interface access remote-control intelligent gas meter terminal master controller, for performing the data communication between processor and remote-control intelligent gas meter terminal master controller, described remote-control intelligent gas meter terminal master controller is used for performing the operation of corresponding table end according to the instruction of processor;
Described processor is used for when receiving the external data coming from the first data-interface, authentication is carried out to the gas management system of selling sending external data, judge whether to obtain the encrypted packets in this external data, and send corresponding operational order by the second data-interface to remote-control intelligent gas meter terminal master controller according to the affairs comprised in data.
As preferably, further technical scheme is: the processor in described information security management module is used for when receiving the external data coming from the first data-interface, authentication is carried out to selling gas management system according to external data, when authentication result is judged as legal, then encrypted packets is decrypted and completeness check, on the contrary the initial condition that then resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that then resets;
After Validation of Data is passed through, preliminary treatment is carried out to the affairs comprised in data, and from remote-control intelligent gas meter terminal master controller, obtain corresponding return information by the second data-interface, data transmission module is returned to by the first data-interface by after described return information encryption, then pre-processed results approved after effectively being confirmed and stored relevant operation information, and to remote-control intelligent gas meter terminal master controller transmit operation instruction; Otherwise then abandon pre-processed results or make caching process.
Further technical scheme is: preset agreement restrictive condition and multiple different cipher key procedures in the FLASH memory in described information security management module, for when information security management module carries out exchanges data from the subsystem selling different classification in gas management system respectively, processor according to the encryption key of external data compared with multiple cipher key procedures preset in FLASH memory, thus the identity of gas management system is sold in certification, and after encrypted packets deciphering and completeness check are passed through, according to the validity of agreement restrictive condition verification msg under current identity, judge whether to carry out preliminary treatment to the affairs in data,
Described first data-interface also accesses IC card information Switching Module, for transmitting it to processor when receiving the external data coming from IC card information Switching Module, processor performs the verification identical with the external data coming from data transmission module to described external data.
Further technical scheme is: also comprise eeprom memory in the information security management module in described information security management module, described eeprom memory also accesses processor, for the associative operation information of storage of processor to remote-control intelligent gas meter terminal master controller, and processor is to the pre-processed results of affairs in external data;
Described remote-control intelligent gas meter terminal master controller is also connected with LCDs by liquid crystal display circuit, for the Various types of data information of remote-control intelligent gas meter being presented in LCDs.
Further technical scheme is: the processor in described information security management module is central processing unit or the single-chip microcomputer that can perform cryptographic algorithm; Described data transmission module is network communication module or bus communication module.
Further technical scheme is: the first described data-interface is network communication interface or bus interface.
Further technical scheme is: described network communication interface be at least in the middle of RF module interface, Zigbee module interface, WiFi module interface, bluetooth module interface, infrared module interface or Optical Fiber Transmission interface, data line transfer interface, power line transmission interface any one; Described bus interface be at least in the middle of Mbus bus interface, RS485 bus interface, CAN interface any one.
Further technical scheme is: the second described data-interface be at least in the middle of USART serial line interface, SPI serial line interface or I2C serial line interface any one.
Further technical scheme is: described information security management module also comprises encrypting module, described encrypting module access processor, for to information security management module and the multistage encryption and decryption of selling gas management system, remote-control intelligent gas meter terminal master controller exchanges data, and auxiliary processor obtains the data encryption key selling gas management system carries out authentication.
Further technical scheme is: described encrypting module carries out data encrypting and deciphering by the mode of AES or 3DES.
Compared with prior art, one of beneficial effect of the present invention is: by embedding information security management module in remote-control intelligent gas meter, it is made to carry out authentication by data transmission module with selling when gas management system carries out exchanges data, ensure that the legitimacy of both communication, and the remote-control intelligent gas meter terminal master controller of gas meter, flow meter must could be communicated with outside by information security management module; Gas company utilizes the information security management module in gas meter, flow meter, the priority assignation of differentiated control can be realized by different keys, and adopt 3DES/AES multi-level encryption mode, make the fail safe of key higher, and by upgrade key during download program cause for gossip in information security management module, avoid the risk that key exposure brings; By built-in data verifying program, ensure that the data of transmission are true, accurate, complete.Simultaneously a kind of remote-control intelligent gas meter structure being embedded with information security management module provided by the present invention is simple, can seamless access civil gas management system by the information security management module of inside, realize remote-control intelligent gas meter dispersion to manufacture, unified management, range of application is wide, and ensure the independence of gas company on gas meter, flow meter controls, and not by extraneous restriction.
Accompanying drawing explanation
Fig. 1 is for illustration of the remote-control intelligent gas meter structured flowchart in one embodiment of the invention;
Fig. 2 is the information security management modular structure block diagram for illustration of embedding in one embodiment of the invention;
Fig. 3 is for illustration of the management system block diagram in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
With reference to figure 1, shown in Fig. 2, one embodiment of the present of invention are a kind of remote-control intelligent gas meters being embedded with information security management module, comprise mechanical metering device, remote-control intelligent gas meter terminal master controller and data transmission module, described mechanical metering device is provided with combustion gas input port and combustion gas delivery outlet, and in mechanical metering device, electromechanical valve and electromechanical signal conversion device are at least installed, described electromechanical signal conversion device is by signal pre-processing circuit access remote-control intelligent gas meter terminal master controller, and electromechanical valve accesses described remote-control intelligent gas meter terminal master controller by electromechanical valve control circuit, with prior art difference be, described remote-control intelligent gas meter also comprises information security management module, described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor accesses the first data-interface respectively, second data-interface and FLASH memory, wherein:
Above-mentioned first data-interface access data transport module, effect performs remote-control intelligent gas meter to communicate with the unique data of data transmission module, and transmit it to processor when receiving the external data coming from data transmission module; Described data transmission module directly receives and comes from long-range external data of selling gas management system;
The effect of above-mentioned FLASH memory stores control in information security management module and documentor;
Above-mentioned second data-interface access data transport module, effect performs the data communication between processor and remote-control intelligent gas meter terminal master controller, and the effect of remote-control intelligent gas meter terminal master controller performs the operation of respective table end according to the instruction of processor;
The effect of above-mentioned processor is when receiving the external data coming from the first data-interface, authentication is carried out to the gas management system of selling sending external data, judge whether to obtain encrypted packets in this external data, and send corresponding operational order by the second data-interface to remote-control intelligent gas meter terminal master controller according to the affairs comprised in data.
According to above-mentioned technical scheme, the technical problem that the present embodiment solves is the information security management module by above-mentioned composition structure, at remote-control intelligent gas meter terminal master controller and sell between gas management system and carry out data retransmission, and give certification and encryption and decryption when forwarding, thus coordinate the intelligent gas meter of gas company to terminal to manage, to eliminate the risk of information security management in gas company's operation.
And the Oscillator module shown in Fig. 1 and pin XIN, XOUT provide clock signal to information security management module; RAM memory is used for the operating ephemeral data of memory module; VCC and VSS two pins provides working power for information security management module, and this power supply should be continued power and can not be provided by remote-control intelligent gas meter terminal master controller pin.
Shown in Fig. 1, in the embodiment that the present invention is more preferably for technical solution problem, the concrete mode of processor in a kind of above-mentioned information security management module to selling the checking of gas management system identity and affairs execution is provided, namely when processor receives the external data coming from the first data-interface, authentication is carried out to selling gas management system according to external data, when authentication result is judged as legal, then encrypted packets is decrypted and completeness check, on the contrary the initial condition that then resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that then resets;
After Validation of Data is passed through, preliminary treatment is carried out to the affairs comprised in data, and from remote-control intelligent gas meter terminal master controller, obtain corresponding return information by the second data-interface, data transmission module is returned to by the first data-interface by after described return information encryption, then pre-processed results approved after effectively being confirmed and stored relevant operation information, and to remote-control intelligent gas meter terminal master controller transmit operation instruction; Such as, otherwise then abandon pre-processed results or make caching process, namely do not receive the confirmation result of data transmission module within the time preset, do not receive the confirmation of data transmission module in three minutes, then reset initial condition; Aforesaid caching process refers to keeps in pre-processed results instruction, when processor is again waken up and receives the confirmation of data transmission module, then in the same way to remote-control intelligent gas meter terminal master controller transmit operation instruction.
Contain the present embodiment peripheral data in above-mentioned technical scheme and authenticate to the whole flow process of affairs performed by processor external data from selling gas management system identity, by the programming of above-mentioned flow process, further enhance in information security management module the fail safe receiving information and executing.And the above-mentioned processor reset initial condition repeatedly mentioned, be resetting processor and perform the state before any one operation above-mentioned, it is resting state that such as processor carried out the state of authentication before receiving external data, be waken up by resting state when receiving external data, but when being judged as illegal to the authentication of selling gas management system, processor then recovers resting state, do not carry out any operation, in other step, the situation of processor reset also substantially as hereinbefore, when failing the authentication, operation note can be stored by processor.
And it is same, in another embodiment of the invention, for realizing being managed the information security management module in remote-control intelligent gas meter by different rights, need preset agreement restrictive condition and multiple different cipher key procedures in the FLASH memory in above-mentioned information security management module, it act as when information security management module carries out exchanges data from the subsystem selling different classification in gas management system respectively, processor according to the encryption key of external data compared with multiple cipher key procedures preset in FLASH memory, thus the identity of gas management system is sold in certification, and after encrypted packets deciphering and completeness check are passed through, according to the validity of agreement restrictive condition verification msg under current identity, judge whether to carry out preliminary treatment to the affairs in data,
Shown in figure 2, make above-mentioned remote-control intelligent gas meter have the IC-card read functions of current main flow intelligent gas meter concurrently for meeting simultaneously, also can set up IC card information Switching Module wherein, above-mentioned first data-interface is also accessed IC card information Switching Module, for transmitting it to processor when receiving the external data coming from IC card information Switching Module, processor performs the verification identical with the external data coming from data transmission module to described external data.
According to another embodiment of the present invention, as mentioned here above, for ease of the buffer memory of processor pre-processed results, in information security management module, also relatively independent eeprom memory can be set, and eeprom memory is also accessed processor, for the associative operation information of storage of processor to remote-control intelligent gas meter terminal master controller, processor is to the pre-processed results of affairs in external data, and the failure record of processor checking, and in FLASH memory, be also provided with other program that can be utilized by processor, namely processor to the associative operation information of remote-control intelligent gas meter terminal master controller once be stored to after in eeprom memory, by unsuppressible-suppression and amendment, to make the running status of information security management module leave complete record.
The remote-control intelligent gas meter being embedded with information security management module in above-described embodiment in actual applications, be as good as with existing remote-control intelligent gas meter, it is based on IC-card intelligent gas meter, a kind of intelligent gas meter of facility information remote transmission and apparatus remote control is realized in conjunction with Long-distance Transmission Technologies, described IC-card intelligent gas meter take IC-card as media, selling gas management system is platform, based on displacement machine measurement technology, pass through electronic-metering technology, data-collection technology, valve control techniques, data processing technique, the combination of combination technique realizes electronic measurement, valve control, the gas meter, flow meter of prepaid and management.Go out as shown in Figure 1, remote-control intelligent gas meter terminal master controller is according to the operational order of information security management module, control signal pre-process circuit has coordinated with the electromechanical signal conversion device in mechanical metering device functions such as supplementing with money, mechanical count signal in mechanical metering device is converted to the signal of telecommunication by electromechanical signal conversion device by tally function, transfer in remote-control intelligent gas meter terminal master controller by signal pre-processing circuit, and presented measuring numerical value accordingly in LCDs by liquid crystal display circuit, corresponding external data is obtained from long-range gas management system of selling by data transmission module is direct in a wireless or wired way, thus perform aforesaid operation, when the balance depletion of supplementing with money in subscriber's meter, remote-control intelligent gas meter terminal master controller controls the electromechanical valve in mechanical metering device by electromechanical valve control circuit, makes it turn off, and then stops air feed.
The processor that above-described embodiment is mentioned is the core of information security management module in remote-control intelligent gas meter, for performing corresponding program and data encryption, in another embodiment of the present invention, above-mentioned processor is directly adopt the central processing unit or single-chip microcomputer that can perform cryptographic algorithm in prior art, such as EFM32 etc.
Based on data communication mode required in above-described embodiment, inventor is with reference to prior art, to select in prior art the communication that the transmission technology of part realizes between processor and interface, wherein data transmission module can adopt network communication module or bus communication module, and corresponding with aforesaid data transmission module, the first data-interface for carrying out unique communication with data transmission module in above-described embodiment can adopt network communication interface or bus interface.
Further, above-mentioned network communication interface can adopt wireless or wired form, radio network interface can adopt in the middle of RF module interface, Zi gbee module interface, WiFi module interface, infrared module interface and bluetooth module interface one or more, wired network interface can adopt in the middle of Optical Fiber Transmission interface, data line transfer interface and power line transmission interface one or more; In the middle of above-mentioned bus interface Mbus bus interface, RS485 bus interface, CAN interface one or more.
And it is corresponding, the second data-interface that in above-described embodiment, processor and remote-control intelligent gas meter terminal master controller carry out communicating preferably matches with conventional master controller, the serial line interfaces such as such as USART interface, SPI interface or I2C interface, to increase the compatibility on information security management module integration and intelligent gas meter.
Shown in Fig. 1, for ensureing the fail safe of data encryption and solution in information security management module in remote-control intelligent gas meter further, preferably independently encrypting module is set therein, and by this independently encrypting module access processor, for to information security management module with sell gas management system, the multistage encryption and decryption of remote-control intelligent gas meter terminal master controller exchanges data, and the data encryption key that gas management system is sold in auxiliary processor acquisition carries out authentication, and the cipher mode that in reference prior art, fail safe is higher, Advanced Encryption Standard in preferred employing AES(cryptography, the abbreviation of English Advanced Encryption Standard) or the triple DEA of 3DES(, English Tr iple Data Encrypt ion Algor ithm) encryption and decryption is carried out to the data of coming and going in information security management module.
Shown in Fig. 3, after the integrated above-mentioned information security management module of remote-control intelligent gas meter that multiple different vendor produces, the outside all communication datas of gas meter, flow meter are all by forwarding after information security management module encryption and decryption, and the internal processes of information security management module is unique, therefore sell gas management system and information security management module can be considered as terminal, in order to manage intelligent gas meter, namely sell gas management system compatible various brand with one, the intelligent gas meter of type is managed concentratedly, effective reduction gas company is to different brands in region, the difficulty of the intelligent gas meter integration management of type.As shown in Figure 3, remote-control intelligent gas meter with the communication path selling gas management system is: show to hold by upper strata multistage communication device, and as collector, repeater, concentrator etc., directly arrive and sell gas management system.By above-mentioned path, table end with directly with sell gas management system and realize transfer of data.
Than that described above, also it should be noted that spoken of in this manual " embodiment ", " another embodiment ", " embodiment " etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any embodiment, what advocate is also fall within the scope of the invention to realize this feature, structure or feature in conjunction with other embodiments.
Although with reference to multiple explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and execution mode, these amendments and execution mode will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of, accompanying drawing open in the application and claim, multiple modification and improvement can be carried out to the building block of subject combination layout and/or layout.Except the modification of carrying out building block and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (9)
1. one kind is embedded with the remote-control intelligent gas meter of information security management module, comprise mechanical metering device, remote-control intelligent gas meter terminal master controller and data transmission module, described mechanical metering device is provided with combustion gas input port and combustion gas delivery outlet, and in mechanical metering device, electromechanical valve and electromechanical signal conversion device are at least installed, described electromechanical signal conversion device is by signal pre-processing circuit access remote-control intelligent gas meter terminal master controller, and electromechanical valve accesses described remote-control intelligent gas meter terminal master controller by electromechanical valve control circuit, it is characterized in that: described remote-control intelligent gas meter also comprises information security management module, described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor accesses the first data-interface respectively, second data-interface and FLASH memory, wherein:
Described first data-interface access data transport module, communicates with the unique data of data transmission module for performing remote-control intelligent gas, and transmits it to processor when receiving the external data coming from data transmission module; Described data transmission module directly receives and comes from long-range external data of selling gas management system;
Described FLASH memory is for storing control in information security management module and documentor;
Described second data-interface access remote-control intelligent gas meter terminal master controller, for performing the data communication between processor and remote-control intelligent gas meter terminal master controller, described remote-control intelligent gas meter terminal master controller is used for performing the operation of corresponding table end according to the instruction of processor;
Described processor is used for when receiving the external data coming from the first data-interface, authentication is carried out to selling gas management system according to external data, when authentication result is judged as legal, then encrypted packets is decrypted and completeness check, on the contrary the initial condition that then resets;
After data integrity verifying passes through, the validity of data is verified, on the contrary the initial condition that then resets;
After Validation of Data is passed through, preliminary treatment is carried out to the affairs comprised in data, and from remote-control intelligent gas meter terminal master controller, obtain corresponding return information by the second data-interface, data transmission module is returned to by the first data-interface by after described return information encryption, then pre-processed results approved after effectively being confirmed and stored relevant operation information, and to remote-control intelligent gas meter terminal master controller transmit operation instruction; Otherwise then abandon pre-processed results or make caching process.
2. the remote-control intelligent gas meter being embedded with information security management module according to claim 1, it is characterized in that: in the FLASH memory in described information security management module, preset agreement restrictive condition and multiple different cipher key procedures, for when information security management module carries out exchanges data from the subsystem selling different classification in gas management system respectively, processor according to the encryption key of external data compared with multiple cipher key procedures preset in FLASH memory, thus the identity of gas management system is sold in certification, and after encrypted packets deciphering and completeness check are passed through, according to the validity of agreement restrictive condition verification msg under current identity, judge whether to carry out preliminary treatment to the affairs in data,
Described first data-interface also accesses IC card information Switching Module, for transmitting it to processor when receiving the external data coming from IC card information Switching Module, processor performs the verification identical with the external data coming from data transmission module to described external data.
3. the remote-control intelligent gas meter being embedded with information security management module according to claim 1, it is characterized in that: in described information security management module, also comprise eeprom memory, described eeprom memory also accesses processor, for the associative operation information of storage of processor to remote-control intelligent gas meter terminal master controller, and processor is to the pre-processed results of affairs in external data;
Described remote-control intelligent gas meter terminal master controller is also connected with LCDs by liquid crystal display circuit, for the Various types of data information of remote-control intelligent gas meter being presented in LCDs.
4. the remote-control intelligent gas meter being embedded with information security management module according to claim 1, is characterized in that: the processor in described information security management module is central processing unit or the single-chip microcomputer that can perform cryptographic algorithm; Described data transmission module is network communication module or bus communication module.
5. the remote-control intelligent gas meter being embedded with information security management module according to claim 1, is characterized in that: the first described data-interface is network communication interface or bus interface.
6. the remote-control intelligent gas meter being embedded with information security management module according to claim 5, is characterized in that: described network communication interface be at least in the middle of RF module interface, Zigbee module interface, WiFi module interface, bluetooth module interface, infrared module interface or Optical Fiber Transmission interface, data line transfer interface, power line transmission interface any one; Described bus interface be at least in the middle of Mbus bus interface, RS485 bus interface, CAN interface any one.
7. the remote-control intelligent gas meter being embedded with information security management module according to claim 1, is characterized in that: the second described data-interface be at least in the middle of USART serial line interface, SPI serial line interface or I2C serial line interface any one.
8. the remote-control intelligent gas meter being embedded with information security management module according to claim 1, it is characterized in that: described information security management module also comprises encrypting module, described encrypting module access processor, for to information security management module and the multistage encryption and decryption of selling gas management system, remote-control intelligent gas meter terminal master controller exchanges data, and auxiliary processor obtains the data encryption key selling gas management system carries out authentication.
9. the remote-control intelligent gas meter being embedded with information security management module according to claim 8, is characterized in that: described encrypting module carries out data encrypting and deciphering by the mode of AES or 3DES.
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| CN103312492A (en) * | 2013-05-09 | 2013-09-18 | 成都秦川科技发展有限公司 | Information security management module of remote-control intelligent heat meter |
| CN103325183A (en) * | 2013-05-09 | 2013-09-25 | 成都秦川科技发展有限公司 | IC card intelligent heat meter information security management module |
| CN103259649A (en) * | 2013-05-09 | 2013-08-21 | 成都秦川科技发展有限公司 | Remote control intelligent heat meter provided with information security management module in embedded mode |
| CN103312493A (en) * | 2013-05-09 | 2013-09-18 | 成都秦川科技发展有限公司 | Internet-of-things intelligent heat meter embedded with information safety management module |
| CN107888581A (en) * | 2017-11-07 | 2018-04-06 | 深圳大学 | Data transfer/method of reseptance and device, data receiving-transmitting system |
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| KR20010109852A (en) * | 2000-06-02 | 2001-12-12 | 김태훈 | Gauge auto management system |
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