CN104104511A - Beidou dynamic encryption transmission device and dynamic encryption method thereof - Google Patents
Beidou dynamic encryption transmission device and dynamic encryption method thereof Download PDFInfo
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- CN104104511A CN104104511A CN201410321505.8A CN201410321505A CN104104511A CN 104104511 A CN104104511 A CN 104104511A CN 201410321505 A CN201410321505 A CN 201410321505A CN 104104511 A CN104104511 A CN 104104511A
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Abstract
The invention discloses a Beidou dynamic encryption transmission device and a dynamic encryption method thereof. The device comprises a central processor, a data source and a Beidou receiving and transmission module. The central processor is internally provided with an RC4 encryption module, an RC4 decryption module, a packing module and an unpacking module. The data output end of the data source is communicated with the data input end of the Beidou receiving and transmission module via an RS232 interference, a memory a, the RC4 encryption module and the packing module in turn. The data receiving end of the Beidou receiving and transmission module is communicated with the data source via the unpacking module, the RC4 decryption module, a memory b, a Flash memory and the RS232 interface. Compared with devices in the prior art, an RC4 algorithm encryption and dynamic encryption technology is adopted, and every time the encrypted password is different so that data security is ensured. Data are packed and then transmitted, the receiving end decrypts the data and then correction is confirmed and response is transmitted so that data transmission is ensured to be reliable, and the device is suitable for the field of output transmission with relatively high requirements for data security.
Description
Technical field
The present invention relates to a kind of Big Dipper encryption technology, relate in particular to a kind of Big Dipper dynamic encryption transmitting device and dynamic encrypting method thereof.
Background technology
Bei bucket Wei star Dao boat Xi Tong ﹝ BeiDou (COMPASS) Navigation Satellite System ﹞ is the Chinese independent research of implementing, the GPS (Global Position System) of independent operating.With GPS of America, Russian Ge Luonasi, European Union's Galileo system and claim global four large satellite navigation system.
Beidou satellite navigation system is made up of vacant terminal, ground surface end and user side three parts.Vacant terminal comprises 5 satellites and 30 non-geo satellites.Ground surface end comprises several ground stations such as master station, injection station and monitoring station.User side by Big Dipper user terminal and with GPS of America, Russia's " GLONASS " (GLONASS), the terminal of other satellite navigation system compatibilities such as European " Galileo " (GALILEO) forms.
China has succeeded in sending up four Big Dipper Navigation Satellites and ten Big Dipper navigation satellites (wherein, the Big Dipper-1A ends task) before this, will, in system group network and experimental basis, progressively expand to GPS (Global Position System).Beidou satellite navigation system construction object is to build up independent, open compatibility, advanced technology, reliable and stable navigation system covering the whole world.
Beidou satellite navigation system, promotes satellite navigation industrial chain to form, and forms the perfect support of national satellite navigation application industry, popularization and security system, promotes the extensive use of satellite navigation in national economy society every profession and trade.This system is can be in the world round-the-clock, round-the-clock provides high accuracy, highly reliable location, navigation, time service service for all types of user, and has short message communication capacity concurrently.After China, the business men of production positioning service equipment, all will provide the support to GPS and dipper system, can improve the accuracy of location.Big Dipper Big Dipper encryption technology is particularly important as can be seen here, and the current encryption method that also there is no encryption technology and device easily cracks, and useful life is short, and security performance is low.
Summary of the invention
Object of the present invention is just to provide a kind of Big Dipper dynamic encryption transmitting device and dynamic encrypting method thereof that has solved the problems referred to above.
To achieve these goals, the technical solution used in the present invention is: a kind of Big Dipper dynamic encryption transmitting device, comprise central processing unit, data source and Big Dipper transceiver module, also comprise RS232 interface, memory a, memory b and Flash memory, in described central processing unit, be provided with RC4 encrypting module, RC4 deciphering module, package module, the module of unpacking, the data output end of described Data Source is successively by RS232 interface, memory a, RC4 encrypting module, package module is communicated with the data input pin of Big Dipper transceiver module, send by Big Dipper transceiver module again, the data receiver of described Big Dipper transceiver module is successively by the module of unpacking, RC4 deciphering module, memory b, Flash memory, RS232 interface is communicated with data source,
As preferably, described central processing unit is undertaken alternately by RS232 interface and PC host computer;
As preferably, described central processing unit adopts 32 High Performance SCMs;
As preferably, on described central processing unit, be also connected with real-time clock module and watchdog module;
As preferably, described memory a memory b is ferroelectric memory;
A kind of dynamic encrypting method of Big Dipper dynamic encryption transmitting device, the file that data source is submitted to resolves into less multiple packets, and the data of each packet are through RC4 algorithm for encryption, and its Crypted password produces at random, again by Crypted password through superencipher, then by special algorithm, the cipher random after superencipher is inserted in the data queue of transmission, forms a complete packet, again by Packet Generation, the rear confirmation of receiving terminal deciphering is errorless, and transmission is replied, and guarantees that transfer of data is reliable.
Compared with prior art, the invention has the advantages that: adopt RC4 algorithm for encryption and dynamic encryption technology, each password of encrypting is not identical, guarantees Information Security.Data send through packing, and the rear confirmation of receiving terminal deciphering is errorless, and transmission is replied, and guarantees that transfer of data is reliable.Be applicable to the output transmission field that data security is had higher requirements.
Brief description of the drawings
Fig. 1 is theory diagram of the present invention.
Embodiment
The invention will be further described below.
Embodiment: referring to Fig. 1, a kind of Big Dipper dynamic encryption transmitting device, comprises central processing unit, data source and Big Dipper transceiver module, described data source is customer equipment data, TXT file etc., described central processing unit adopts 32 High Performance SCMs, also comprises RS232 interface, memory a, memory b and Flash memory, be provided with RC4 encrypting module in described central processing unit, RC4 deciphering module, package module, the module of unpacking, described memory a memory b is ferroelectric memory, and ferroelectric memory still can continue save data after power down, and writing speed is fast and have a unlimited life-span that writes, be not easy to write bad, the data output end of described Data Source is successively by RS232 interface, memory a, RC4 encrypting module, package module is communicated with the data input pin of Big Dipper transceiver module, then sends by Big Dipper transceiver module, and described Big Dipper transceiver module receives after the signal that big-dipper satellite sends, successively by the module of unpacking, RC4 deciphering module, memory b, Flash memory, RS232 interface is communicated with data source, described central processing unit is undertaken by RS232 interface and PC host computer alternately.On described central processing unit, be also connected with real-time clock module and watchdog module.
A kind of dynamic encrypting method of Big Dipper dynamic encryption transmitting device, Big Dipper transmitting device adopts 32 High Performance SCMs as CPU, complete reception, storage, encryption, deciphering, the package of file, the operation such as unpack, then finally complete data input and data output by Big Dipper transceiver module.Big Dipper transmitting device is mutual by serial ports and PC host computer, returns to inner state information.Big Dipper transmitting device is mutual by serial ports and PC host computer, and all interactive data format must meet " file transfer protocol (FTP) " specification.File transfer protocol (FTP) offers user as independent supporting paper.
It is multiple that Big Dipper transmitting device inside has above-mentioned data encryption sendaisle, allow user to submit continuously the file that needs transmission to, do not need to wait for that first file is sent completely, just can submit second file to, in the time that inner sendaisle takes, can not accept transmission task.Have at least a sendaisle to be sent completely, when passage enters idle condition, user just can submit new transmission task to.
The file that the present invention submits user to decomposes packing, encrypts, and stores.Then each packet is sent successively, receiving terminal receives after packet, returns to reply data bag notice transmit leg, thereby ensures the transmission reliability of packet.The file that user is submitted to resolves into less multiple packets, and the data of each packet are through RC4 algorithm for encryption, and Crypted password produces at random, so the password of each packet is not identical.Password, through superencipher, then, by special algorithm, is inserted into the cipher random of encryption in the data queue of transmission, forms a complete packet.System transmitting-receiving file is replied in employing, when receiving after the packet that transmit leg sends, carries out the inverse process of encrypt file, obtains initial data.Through confirm errorless after, Big Dipper transmitting device will send reply data bag, notice transmit leg data receive.In the time that all packets of a file finish receiving, All Files fragment is connected to a complete file by Big Dipper transmitting device, and be stored in Flash.
The two-way short message communication function of the Beidou satellite navigation system that Big Dipper transmitting device is developed voluntarily based on China just, equipment user's data message being transmitted mutually by Big Dipper network.Big Dipper transmitting device has the functions such as file transmission, file reception, file management, file storage, remote client location and the machine location.The RC4 dynamic encryption technology that Big Dipper transmitting device dynamic encryption technology is used, due to the randomness of password, will greatly improve the safety and reliability of transmission data.
Above a kind of Big Dipper dynamic encryption transmitting device provided by the present invention and dynamic encrypting method thereof are carried out to detailed introduction, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to be possible to change of the present invention and improvement, and can not exceed design and the scope of accessory claim defined, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. a Big Dipper dynamic encryption transmitting device, comprise central processing unit, data source and Big Dipper transceiver module, it is characterized in that: also comprise RS232 interface, memory a, memory b and Flash memory, in described central processing unit, be provided with RC4 encrypting module, RC4 deciphering module, package module, the module of unpacking, the data output end of described Data Source is successively by RS232 interface, memory a, RC4 encrypting module, package module is communicated with the data input pin of Big Dipper transceiver module, send by Big Dipper transceiver module again, the data receiver of described Big Dipper transceiver module is successively by the module of unpacking, RC4 deciphering module, memory b, Flash memory, RS232 interface is communicated with data source.
2. a kind of Big Dipper dynamic encryption transmitting device according to claim 1, is characterized in that: described central processing unit is undertaken by RS232 interface and PC host computer alternately.
3. a kind of Big Dipper dynamic encryption transmitting device according to claim 1, is characterized in that: described central processing unit adopts 32 High Performance SCMs.
4. a kind of Big Dipper dynamic encryption transmitting device according to claim 1, is characterized in that: on described central processing unit, be also connected with real-time clock module and watchdog module.
5. a kind of Big Dipper dynamic encryption transmitting device according to claim 1, is characterized in that: described memory a memory b is ferroelectric memory.
6. the dynamic encrypting method of a Big Dipper dynamic encryption transmitting device, it is characterized in that: the file that data source is submitted to resolves into less multiple packets, the data of each packet are through RC4 algorithm for encryption, its Crypted password produces at random, again by Crypted password through superencipher, then by special algorithm, cipher random after superencipher is inserted in the data queue of transmission, form a complete packet, again by Packet Generation, the rear confirmation of receiving terminal deciphering is errorless, and transmission is replied, and guarantees that transfer of data is reliable.
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| CN201410321505.8A CN104104511B (en) | 2014-07-07 | 2014-07-07 | A kind of Big Dipper dynamic encryption transmitting device and its dynamic encrypting method |
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| CN105527630A (en) * | 2015-05-21 | 2016-04-27 | 北京中电华大电子设计有限责任公司 | Satellite navigation chip integrated with data safety function and application method of chip |
| CN106100838A (en) * | 2016-08-16 | 2016-11-09 | 成都市和平科技有限责任公司 | A kind of Big Dipper data encryption system based on FPGA and method |
| WO2018195804A1 (en) * | 2017-04-26 | 2018-11-01 | 深圳华大北斗科技有限公司 | Satellite navigation chip integrated with data security function and application method therefor |
| CN110609303A (en) * | 2018-06-14 | 2019-12-24 | 深圳华大北斗科技有限公司 | Position sensor and safety chip based on position sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105527630A (en) * | 2015-05-21 | 2016-04-27 | 北京中电华大电子设计有限责任公司 | Satellite navigation chip integrated with data safety function and application method of chip |
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| CN106100838A (en) * | 2016-08-16 | 2016-11-09 | 成都市和平科技有限责任公司 | A kind of Big Dipper data encryption system based on FPGA and method |
| WO2018195804A1 (en) * | 2017-04-26 | 2018-11-01 | 深圳华大北斗科技有限公司 | Satellite navigation chip integrated with data security function and application method therefor |
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| CN110609303A (en) * | 2018-06-14 | 2019-12-24 | 深圳华大北斗科技有限公司 | Position sensor and safety chip based on position sensor |
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| CN104104511B (en) | 2017-09-12 |
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