CN103259648A - Information security management module of intelligent heat meter of internet of things - Google Patents
Information security management module of intelligent heat meter of internet of things Download PDFInfo
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Abstract
The invention discloses an information security management module of an intelligent heat meter of the internet of things, and belongs to management auxiliary devices of intelligent heat meters of the internet of things. The information security management module comprises a processor, a first data interface, a second data interface and a FLASH storage. The processor is connected into the first data interface, a second data interface and the FLASH storage. The information security management module conducts identity authentication when conducting data exchange with a remote control terminal of the internet of things, legality of communication between the information security management module and the remote control terminal of the internet of things is ensured, and master controller of the intelligent heat meter of the internet of things can be communicated with the outside only through the information security management module. Meanwhile, the information security management module is simple in structure, and capable of being embedded into different types of intelligent heat meters of the internet of things. The information security management module and a bus interface are compatible with the master controller of the intelligent heat meter of the internet of things through various communication transmission technologies, and the information security management module is connected into a heating management system in a seamless mode, so that dispersed manufacturing and unified management of the intelligent heat meter of the internet of things are achieved, and the information security management module of the intelligent heat meter of the internet of things is wide in range of application.
Description
Technical field
The present invention relates to a kind of Internet of Things intellectual heat meter management aid, in particular, the present invention relates generally to a kind of Internet of Things intellectual heat meter information security management module.
Background technology
At present, owing to be subjected to internet security technology imperfection, technology of Internet of things still is in the junior stage, and the telecommunication security guarantee such as also need strengthen at the influence of factor, the development of Internet of Things intellectual heat meter is scarcely out of swaddling-clothes, and relevant every data exchange safety technology also needs to strengthen.The Internet of Things intellectual heat meter need use telecommunication technique and technology of Internet of things, and making the heat energy telogenesis is a terminal equipment, heat energy table real-time online and the internet exchange message of the Internet.The communication path of Internet of Things intellectual heat meter and its total management system is: data by the Internet network, arrive Internet of Things intellectual heat meter total management system by the upper strata multistage communication device.Because all there are the safety of data transmission problem in telecommunication technique and technology of Internet of things, so there is great risk in the information security management of Internet of Things intellectual heat meter.Use telecommunication equipment, data may make a mistake, and also may suffer artificial modification, cause the Internet of Things intellectual heat meter out of control, and the heat management system of selling that causes the user can break away from Thermoenergy Corp. arbitrarily uses heat energy.Use the Internet network, Internet Server is under attack easily, and under the unwitting situation of Internet of Things intellectual heat meter user, information is read and distorts; Duplicate networking intellectual heat meter equipment identities is forged by certain customers, assumes another's name to be input to and sells in the heat management system, can revise data, steals heat energy, makes Thermoenergy Corp. suffer economic loss.
The Internet of Things intellectual heat meter is sold in the heat management system, there is number of ways can realize Internet of Things intellectual heat meter and the exchanges data of selling heat management system, the grid complexity, there are uncertain risk factors in each link, if any there not being active data effect means, the fail safe of exchanges data will can not get guaranteeing that the user can steal heat energy by multiple means, makes Thermoenergy Corp. suffer economic loss.
As can be seen from the above, there are too many risk factors in the Internet of Things intellectual heat meter in safety management, these risk factors, cause the economic loss of Thermoenergy Corp., therefore need a kind of safety management servicing unit, i.e. Internet of Things intellectual heat meter information security management module realizes proof of identity to outside data sending terminal at the Internet of Things intellectual heat meter, data validations etc. finally realize the information security management of Internet of Things intellectual heat meter total management system.
Summary of the invention
One of purpose of the present invention is at above-mentioned deficiency, a kind of Internet of Things intellectual heat meter information security management module is provided, information security management with various types of Internet of Things intellectual heat meters and management system thereof in the expectation solution prior art can not get problems such as assurance, thereby eliminates the risk of information security management in Thermoenergy Corp.'s operation.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of Internet of Things intellectual heat meter information security management module provided by the present invention, described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor inserts first data-interface, second data-interface and FLASH memory respectively, wherein:
Described first data-interface be used for to be carried out the Internet of Things intellectual heat meter and is communicated by letter with the unique data of data transmission module, and transmits it to processor when coming from the external data that data transmission module receives from Internet of Things receiving;
Described FLASH memory is used for control and the documentor of storage information security management module;
Described second data-interface is used for carrying out the data communication between processor and the Internet of Things intellectual heat meter terminal master controller, and described Internet of Things intellectual heat meter terminal master controller is used for carrying out the operation of corresponding table end according to the instruction of processor;
Described processor is used for when receiving the external data that comes from first data-interface, the Internet of Things remote control terminal that sends external data is carried out authentication, judge whether to obtain the encrypted packets in this external data, and send corresponding operational order by second data-interface to Internet of Things intellectual heat meter terminal master controller according to the affairs that comprise in the data.
As preferably, further technical scheme is: described processor is used for when receiving the external data that comes from first data-interface, according to external data the Internet of Things remote control terminal is carried out authentication, when authentication result is judged as when 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, the affairs that comprise in the data are carried out preliminary treatment, and from Internet of Things intellectual heat meter terminal master controller, obtain corresponding return information by second data-interface, described return information is encrypted the back return to data transmission module by first data-interface, after effectively being confirmed, then the preliminary treatment result is approved and stored relevant operation information, and instructed to the transmit operation of Internet of Things intellectual heat meter terminal master controller; Otherwise then abandon the preliminary treatment result or make caching process.
Further technical scheme is: preset protocols limit condition and a plurality of different cipher key procedures in the described FLASH memory, be used in the information security management module respectively when different Internet of Things remote control terminal carries out exchanges data, processor is compared according to a plurality of cipher key procedures that preset in the encryption key of external data and the FLASH memory, thereby the identity of authentication Internet of Things remote control terminal, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition verification msg under current identity, judge whether the affairs in the data are carried out preliminary treatment;
Described first data-interface also inserts the IC-card information exchange module, be used for transmitting it to when receiving the external data that comes from the IC-card information exchange module processor, processor is carried out the verification identical with the external data that comes from data transmission module to described external data.
Further technical scheme is: also comprise eeprom memory in the described information security management module, described eeprom memory also inserts processor, be used for storage of processor to the associative operation information of Internet of Things intellectual heat meter terminal master controller, and processor is to the preliminary treatment result of affairs in the external data.
Further technical scheme is: described processor is for carrying out central processing unit or the single-chip microcomputer of cryptographic algorithm; Described data transmission module is network communication module or bus communication module.
Further technical scheme is: described first data-interface is network communication interface or bus interface.
Further technical scheme is: described network communication interface is at least any one in the middle of RF module interface, Zigbee module interface, WiFi module interface, bluetooth module interface or Optical Fiber Transmission interface, data wire coffret, the power line transmission interface; Described bus interface is at least any one in the middle of the Mbus bus interface, RS485 bus interface, CAN bus interface.
Further technical scheme is: described second data-interface is at least any one in the middle of USART serial line interface, SPI serial line interface or the I2C serial line interface.
Further technical scheme is: described information security management module also comprises encrypting module, described encrypting module inserts processor, be used for the multistage encryption and decryption to information security management module and Internet of Things remote control terminal, Internet of Things intellectual heat meter terminal master controller exchanges data, and the data encryption key that auxiliary processor obtains the Internet of Things remote control terminal carries out authentication.
Further technical scheme is: described encrypting module is by the Advanced Encryption Standard in the AES(cryptography, the abbreviation of English Advanced Encryption Standard) or the triple DEAs of 3DES(, mode English Triple Data Encryption Algorithm) is carried out data encrypting and deciphering.
Compared with prior art, one of beneficial effect of the present invention is: the information security management module is carried out authentication when carrying out exchanges data by data transmission module and Internet of Things remote control terminal, guaranteed the legitimacy of both communication, Internet of Things intellectual heat meter terminal master controller must could communicate with the outside by the information security management module; Utilize different keys can realize the authority setting of Thermoenergy Corp.'s differentiated control, and adopt 3DES/AES multi-level encryption mode, make that the fail safe of key is higher, and upgrading key can download cause for gossip by the program on the information security management module time, avoid key to leak the risk of bringing; By built-in data verifying program, guarantee that the data of transmission are true, accurate, complete.A kind of Internet of Things intellectual heat meter information security management modular structure provided by the present invention is simple simultaneously, can embed in various types of Internet of Things intellectual heat meters, by multiple communication transmission technology and the compatible Internet of Things intellectual heat meter of bus interface terminal master controller, there is no and sew up into heat supplying managing system, realize that the Internet of Things intellectual heat meter disperses to make, unified management, range of application is wide, and guarantee the independence of Thermoenergy Corp. in the control of heat energy table, and be not subjected to extraneous restriction.
Description of drawings
Fig. 1 is for being used for the information security management modular structure block diagram of the explanation embodiment of the invention;
Fig. 2 is for being used for the information security management module application block diagram of the explanation embodiment of the invention;
Fig. 3 is for being used for the management system block diagram of the explanation embodiment of the invention.
Embodiment
The present invention is further elaborated below in conjunction with accompanying drawing.
With reference to shown in Figure 1, one embodiment of the present of invention are a kind of Internet of Things intellectual heat meter information security management modules, described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor inserts first data-interface, second data-interface and FLASH memory respectively, wherein:
The effect of above-mentioned first data-interface is to carry out the Internet of Things intellectual heat meter to communicate by letter with the unique data of data transmission module, and transmits it to processor when coming from the external data that data transmission module receives from Internet of Things receiving;
The effect of above-mentioned FLASH memory is control and the documentor in the storage information security management module;
With reference to shown in Figure 2, the effect of above-mentioned second data-interface is the data communication of carrying out between processor and the Internet of Things intellectual heat meter terminal master controller, and the effect of Internet of Things intellectual heat meter terminal master controller is to carry out the operation of respective table end according to the instruction of processor;
The effect of above-mentioned processor is when receiving the external data that comes from first data-interface, the Internet of Things remote control terminal that sends external data is carried out authentication, judge whether to obtain encrypted packets in this external data, and send corresponding operational order by second data-interface to Internet of Things intellectual heat meter terminal master controller according to the affairs that comprise in the data.
According to above-mentioned technical scheme as can be known, the technical problem that present embodiment solves is the information security management module by above-mentioned composition structure, carrying out data between multistage transmission equipment in Internet of Things intellectual heat meter terminal master controller and Internet of Things, the Internet of Things remote control terminal transmits, and when transmitting, authenticated and encryption and decryption, thereby cooperate Thermoenergy Corp. that the intellectual heat meter of terminal is managed, to eliminate the risk of information security management in Thermoenergy Corp.'s operation.
And the information security management module of the Oscillator module shown in Fig. 1 and pin XIN, XOUT provides clock signal; The RAM memory is used for the operating ephemeral data of memory module; VCC and VSS two pins provide working power for the information security management module, and this power supply should be continued power and can not being provided by Internet of Things intellectual heat meter terminal master controller pin.
Again with reference to shown in Figure 1, be used for the embodiment that the technical solution problem is more preferably in the present invention, the concrete mode of a kind of above-mentioned processor to the authentication of Internet of Things remote control terminal and affairs execution is provided, namely when processor receives the external data that comes from first data-interface, according to external data the Internet of Things remote control terminal is carried out authentication, when authentication result is judged as when 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, the affairs that comprise in the data are carried out preliminary treatment, and from Internet of Things intellectual heat meter terminal master controller, obtain corresponding return information by second data-interface, described return information is encrypted the back return to data transmission module by first data-interface, after effectively being confirmed, then the preliminary treatment result is approved and stored relevant operation information, and instructed to the transmit operation of Internet of Things intellectual heat meter terminal master controller; Otherwise then abandon the preliminary treatment result or make caching process, namely do not receive the affirmation result of data transmission module in the predefined time, for example do not receive the affirmation information of data transmission module in three minutes, initial condition then resets; Aforesaid caching process refers to the preliminary treatment object command is kept in, and when processor is waken up and receives the affirmation information of data transmission module again, then instructs to the transmit operation of Internet of Things intellectual heat meter terminal master controller in the same way.
The affairs from the authentication of Internet of Things remote control terminal to external data of external data in the present embodiment have also been comprised in the above-mentioned technical scheme by the performed whole flow process of processor, by the program setting of above-mentioned flow process, further strengthened in the information security management module receiving the fail safe of information and executing.And the above-mentioned processor reset initial condition of repeatedly mentioning, be the state of resetting processor before carrying out above-mentioned any one operation, for example to carry out the state of authentication before receiving external data be resting state to processor, when receiving that external data is waken up by resting state, but the authentication of Internet of Things remote control terminal is judged as when illegal, processor then recovers resting state, do not carry out any operation, the situation of processor reset also substantially as hereinbefore in other step, when authentication failed, processor can be stored operation note.The above-mentioned Internet of Things remote control terminal of mentioning is various communication object in the Internet of Things simultaneously, and different communication objects finally is connected to heat energy and sells management system.
And it is same, in another embodiment of the present invention, for realizing the information security management module being managed by different rights, need in above-mentioned FLASH memory, to preset protocols limit condition and a plurality of different cipher key procedures, it act as in the information security management module respectively when different Internet of Things remote control terminal carries out exchanges data, processor is compared according to a plurality of cipher key procedures that preset in the encryption key of external data and the FLASH memory, thereby the identity of authentication Internet of Things remote control terminal, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition verification msg under current identity, judge whether the affairs in the data are carried out preliminary treatment;
With reference to shown in Figure 2, for satisfying at present the internal structure of Internet of Things heat energy table mostly, above-mentioned first data-interface also inserts the IC-card information exchange module, be used for transmitting it to when receiving the external data that comes from the IC-card information exchange module processor, processor is carried out the verification identical with the external data that comes from data transmission module to described external data.
According to another embodiment of the present invention, mention as above-mentioned, buffer memory for ease of processor preliminary treatment result, in the information security management module, also relatively independent eeprom memory can be set, and eeprom memory also inserted processor, be used for storage of processor to the associative operation information of Internet of Things intellectual heat meter terminal master controller, processor is to the preliminary treatment result of affairs in the external data, and the failure record of processor checking, and in the FLASH memory, also be provided with other program that to be utilized by processor, after in a single day be processor be stored in the eeprom memory to the associative operation information of Internet of Things intellectual heat meter terminal master controller, with unsuppressible-suppression and modification, in order to make the running status of information security management module stay complete record.
With reference to shown in Figure 2, Internet of Things intellectual heat meter information security management module in above-described embodiment in actual applications, insert between Internet of Things intellectual heat meter terminal master controller and the data transmission module, and the internal structure of heat energy table and existing Internet of Things intellectual heat meter are as good as, the Internet of Things intellectual heat meter itself contains multiple functional module, as the flow measurement module, memory module, display module, the flow valve module, the surplus reminding module, the medium temperature measurement module, these modules are by being connected with Internet of Things intellectual heat meter terminal master controller, finish the correlation function of Internet of Things intellectual heat meter, as the flow measurement module heat energy that the user uses is measured, the demonstration that display module will advance with heat and after-heat and relevant information, the data message that memory module stores is relevant, the flow valve module is responsible for the switch valve operation, and the medium temperature measurement module is responsible for measuring the temperature value of input and output medium.
And according to above-mentioned principle, this Internet of Things intellectual heat meter information security management module is integrated being applied in the conventional Internet of Things intellectual heat meter directly, by upper strata multistage communication device and the networkings of Internet of Things remote control terminal constituent such as data acquisition unit, data concentrators, multistage dividing data zone, and then by carrying out the signal distribution and integrate in the Internet, guarantee the stability of signal transmission in the Internet of Things; And in addition, the improvement of going back adaptability is applied to other carries out telemanagement by electronic information metering device.
The processor that above-described embodiment is mentioned is the core of information security management module, be used for carrying out corresponding program and data encryption, in another embodiment of the present invention, above-mentioned processor is for directly adopting central processing unit or the single-chip microcomputer that can carry out cryptographic algorithm in the prior art, for example EFM32 etc.
Based on data communication mode required in above-described embodiment, the inventor is with reference to prior art, selected for use the transmission technology of part in the prior art to realize communicating by letter between processor and the interface, wherein data transmission module can adopt network communication module or bus communication module, and corresponding with aforesaid data transmission module, be used for carrying out unique first data-interface of communicating by letter with data transmission module in above-described embodiment and 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 one or more in the middle of RF module interface, Zigbee module interface, WiFi module interface and the bluetooth module interface, and wired network interface can adopt one or more in the middle of Optical Fiber Transmission interface, data wire coffret and the power line transmission interface; Above-mentioned bus interface be in the middle of the Mbus bus interface, RS485 bus interface, CAN bus interface one or more.
And it is corresponding, second data-interface that processor and Internet of Things intellectual heat meter terminal master controller communicate in above-described embodiment preferably is complementary with conventional master controller, serial line interfaces such as USART interface, SPI interface or I2C interface for example are integrated in compatibility on the intellectual heat meter to increase the information security management module.
Again with reference to shown in Figure 1, fail safe for data encryption and deciphering in the administration module that further ensures information security, be preferably in its inside independently encrypting module is set, and with this independently encrypting module insert processor, be used for information security management module and Internet of Things remote control terminal, the multistage encryption and decryption of Internet of Things intellectual heat meter terminal master controller exchanges data, and the data encryption key that auxiliary processor obtains the Internet of Things remote control terminal carries out authentication, and with reference to the higher cipher mode of fail safe in the prior art, the preferred Advanced Encryption Standard that adopts in the AES(cryptography, the abbreviation of English Advanced Encryption Standard) or the triple DEAs of 3DES(, English Triple Data Encryption Algorithm) data of coming and going in the information security management module are carried out encryption and decryption.
Again with reference to shown in Figure 3, after the integrated above-mentioned information security management module of Internet of Things intellectual heat meter that a plurality of different vendors produce, outside all communication datas of heat energy table are all by transmitting after the information security management module encryption and decryption, and the internal processes of information security management module is unique, therefore heat energy is sold management system and the information security management module can be considered as terminal, by Internet of Things management intellectual heat meter, namely sell the compatible various brands of management system with a heat energy, the intellectual heat meter of type is managed concentratedly, effectively reduces Thermoenergy Corp. to different brands in the zone, the difficulty of the intellectual heat meter integration management of type.As shown in Figure 3, the exchanges data path that Internet of Things intellectual heat meter and heat energy are sold management system is: data, arrive heat energy and sell management system by Internet network (the Internet) by the upper strata multistage communication device.And table end equipment user sells management system by Internet access to netwoks heat energy.
Except above-mentioned, also need to prove " embodiment ", " another embodiment " that speak of in this manual, " embodiment " etc., refer to concrete feature, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Furthermore, when describing a concrete feature, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also fall within the scope of the invention.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here, but, should be appreciated that those skilled in the art can design a lot of other modification and execution modes, these are revised and execution mode will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be tangible.
Claims (10)
1. Internet of Things intellectual heat meter information security management module, it is characterized in that: described information security management module comprises processor, first data-interface, second data-interface and FLASH memory, described processor inserts first data-interface, second data-interface and FLASH memory respectively, wherein:
Described first data-interface be used for to be carried out the Internet of Things intellectual heat meter and is communicated by letter with the unique data of data transmission module, and transmits it to processor when coming from the external data that data transmission module receives from Internet of Things receiving;
Described FLASH memory is used for control and the documentor of storage information security management module;
Described second data-interface is used for carrying out the data communication between processor and the Internet of Things intellectual heat meter terminal master controller, and described Internet of Things intellectual heat meter terminal master controller is used for carrying out the operation of corresponding table end according to the instruction of processor;
Described processor is used for when receiving the external data that comes from first data-interface, the Internet of Things remote control terminal that sends external data is carried out authentication, judge whether to obtain the encrypted packets in this external data, and send corresponding operational order by second data-interface to Internet of Things intellectual heat meter terminal master controller according to the affairs that comprise in the data.
2. Internet of Things intellectual heat meter information security management module according to claim 1, it is characterized in that: described processor is used for when receiving the external data that comes from first data-interface, according to external data the Internet of Things remote control terminal is carried out authentication, when authentication result is judged as when 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, the affairs that comprise in the data are carried out preliminary treatment, and from Internet of Things intellectual heat meter terminal master controller, obtain corresponding return information by second data-interface, described return information is encrypted the back return to data transmission module by first data-interface, after effectively being confirmed, then the preliminary treatment result is approved and stored relevant operation information, and instructed to the transmit operation of Internet of Things intellectual heat meter terminal master controller; Otherwise then abandon the preliminary treatment result or make caching process.
3. Internet of Things intellectual heat meter information security management module according to claim 1 and 2, it is characterized in that: preset protocols limit condition and a plurality of different cipher key procedures in the described FLASH memory, be used in the information security management module respectively when different Internet of Things remote control terminal carries out exchanges data, processor is compared according to a plurality of cipher key procedures that preset in the encryption key of external data and the FLASH memory, thereby the identity of authentication Internet of Things remote control terminal, and after encrypted packets deciphering and completeness check pass through, according to the validity of protocols limit condition verification msg under current identity, judge whether the affairs in the data are carried out preliminary treatment;
Described first data-interface also inserts the IC-card information exchange module, be used for transmitting it to when receiving the external data that comes from the IC-card information exchange module processor, processor is carried out the verification identical with the external data that comes from data transmission module to described external data.
4. Internet of Things intellectual heat meter information security management module according to claim 1 and 2, it is characterized in that: also comprise eeprom memory in the described information security management module, described eeprom memory also inserts processor, be used for storage of processor to the associative operation information of Internet of Things intellectual heat meter terminal master controller, and processor is to the preliminary treatment result of affairs in the external data.
5. Internet of Things intellectual heat meter information security management module according to claim 1 and 2 is characterized in that: described processor is for carrying out central processing unit or the single-chip microcomputer of cryptographic algorithm; Described data transmission module is network communication module or bus communication module.
6. Internet of Things intellectual heat meter information security management module according to claim 1 and 2, it is characterized in that: described first data-interface is network communication interface or bus interface.
7. Internet of Things intellectual heat meter information security management module according to claim 6 is characterized in that: described network communication interface is at least any one in the middle of RF module interface, Zigbee module interface, WiFi module interface, bluetooth module interface or Optical Fiber Transmission interface, data wire coffret, the power line transmission interface; Described bus interface is at least any one in the middle of the Mbus bus interface, RS485 bus interface, CAN bus interface.
8. Internet of Things intellectual heat meter information security management module according to claim 1 and 2 is characterized in that: described second data-interface is at least any one in the middle of USART serial line interface, SPI serial line interface or the I2C serial line interface.
9. Internet of Things intellectual heat meter information security management module according to claim 1 and 2, it is characterized in that: described information security management module also comprises encrypting module, described encrypting module inserts processor, be used for the multistage encryption and decryption to information security management module and Internet of Things remote control terminal, Internet of Things intellectual heat meter terminal master controller exchanges data, and the data encryption key that auxiliary processor obtains the Internet of Things remote control terminal carries out authentication.
10. Internet of Things intellectual heat meter information security management module according to claim 9, it is characterized in that: described encrypting module carries out data encrypting and deciphering by the mode of AES or 3DES.
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| CN112769686A (en) * | 2019-11-05 | 2021-05-07 | 应急管理部通信信息中心 | Intelligent Internet of things gateway and data transmission method |
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Application publication date: 20130821 |