CN102684869A - Deciphering method and deciphering system based on visible light communication - Google Patents
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Abstract
The embodiment of the invention provides a deciphering method and a deciphering system based on the visible light communication. The deciphering method comprises the steps of receiving a visible light signal transmitted by a transmitting end, and converting the visible light signal to a digital signal; decoding the digital signal and a pseudo code signal which is changed along with the unit time, and acquiring an original data signal, wherein the code pattern and an initial phase of the pseudo signal at the same moment are identical to that of a pseudo signal on the transmitting end. Since the received visible light signal is a scramble signal which is changed along with the unit time, the safety of the photon internet of things can be improved.
Description
[technical field]
The present invention relates to photon technology of Internet of things technical field, concrete, relate to a kind of decryption method and system based on visible light communication.
[background technology]
The wireless light communication technology is claimed the visible light communication again, and its high-frequency through led light source is glimmered and communicated, and has light to represent 1, unglazed representative 0, and its transmission rate is up to the per second gigabit.The wireless light communication technology is because its data are difficult for being disturbed and catching, and optical communication equipment is made simple and should not be damaged or demagnetization, can be used for making the wireless optical encryption key pair.Compare with microwave technology, wireless light communication has quite abundant frequency spectrum resource, and this is that general microwave communication and radio communication are incomparable; Visible light communication can be suitable for any communication protocol, be applicable to any environment simultaneously; Aspect fail safe, it compares traditional magnetic material, need not to worry the demagnetization problem, needn't worry that more Content of Communication stolen by the people; The equipment of wireless light communication sets up convenient flexibly, and with low cost, is fit to extensive popularization and application.
Internet of Things be one based on information-bearing bodies such as the Internet, conventional telecommunications nets, let all realized the network interconnect by the General Physics object of independent addressing.Internet of Things refers to ubiquitous end-equipment and facility; Realize interconnecting through various wireless or wired long distances or short distance communication network; Management and service functions such as the controlled and even personalized real time on-line monitoring of safety, location are reviewed, alarm linkage, dispatch control, program management, Long-distance Control, safety precaution, long-range repair and maintenance, online upgrading, statistical report form, decision support, leader's desktop are provided, realize that " pipe, control, the battalion " of efficient, energy-conservation, safety, environmental protection to equipment is integrated.Traditional Internet of Things is generally realized interconnecting through various wireless or wired communication networks, adopts traditional communication technology.
In the prior art, utilize visible light to transmit the technology of Internet of things of short-range communication at free space, we are referred to as the photon Internet of Things this Internet of Things that utilizes the visible light communication technology.The photon Internet of Things has the function of traditional Internet of Things, and just the mode of communication adopts visible light to communicate.Because visible light has the directive property height, can not penetrate characteristics such as barrier, therefore possess higher fail safe than wireless.The photon Internet of Things utilizes visible light to carry out short-range communication, and the directive property of visible light is high, can not penetrate barrier, has higher fail safe than the Internet of Things that uses communication.
But the photon technology of Internet of things is not encrypted initial data at present; Transmit but directly modulate the signal on the visible light signal; Or just data source has been carried out simple encryption, as initial data and scrambler are carried out convolution, but scrambler sequence is changeless.So just might there be a potential safety hazard, takes, just might copy the light signal of same stroboscopic as using high-speed camera; Re-use LED reflector of the same type emission sort signal, receive control end so and also possibly can identify this signal that duplicates, and think legal; And can correctly restore primary signal; Thereby the same ability control appliance, as open gate control system etc., there is potential safety hazard.
[summary of the invention]
Technical problem to be solved by this invention provides a kind of decryption method and system based on visible light communication, the fail safe that can improve the photon Internet of Things.
For solving the problems of the technologies described above, one embodiment of the invention provides a kind of decryption method based on visible light communication, and this method comprises:
Receive the visible light signal that transmitting terminal sends, convert said visible light letter into digital signal; Said digital signal and the pseudo-code signal that changes with the unit interval are deciphered, obtained original data signal; Wherein, said pseudo-code signal is identical in the sign indicating number type and the start-phase of synchronization pseudo-code signal with transmitting terminal.
Preferably, before said digital signal and the pseudo-code signal that changes with the unit interval deciphered, also comprise: said digital signal is carried out demodulation.
Preferably, said method also comprises:
Said original data signal to obtaining carries out authentication, if through authentication, controls connected functional unit action.
Wherein, the frequency of the frequency of said original data signal and said pseudo-code signal is identical or have a relation of integral multiple.
Wherein, said original data signal is identical with the start-phase of said pseudo-code signal.
For solving the problems of the technologies described above, another embodiment of the present invention also provides a kind of decryption system based on visible light communication, and said system comprises and is used to receive the visible light signal that transmitting terminal sends, and converts said visible light signal the receiving element of digital signal into; Be used to produce and export the pseudo-code generator of the pseudo-code signal that changes with the unit interval; And be connected with said pseudo-code generator, be used for said digital signal and said pseudo-code signal are deciphered with said receiving element, the decoder of output original data signal.
Preferably, said system also comprises:
Be connected between said receiving element and the said decoder, be used for said digital signal is carried out the demodulator of demodulation.
Wherein, said pseudo-code generator is identical with the structure of the code generator of said transmitting terminal.
Wherein, the operating state of the pseudo-code generator of said pseudo-code generator and said transmitting terminal is synchronous.
Wherein, the operating frequency of said pseudo-code generator and the pseudo-code generator of said transmitting terminal is identical or have a relation of integral multiple.
Compared with prior art; Technique scheme has the following advantages: in the decryption method that is adopted; The visible light signal that receiving terminal receives not is an original data signal, but the scrambler signal after encrypting, and this scrambler signal changed with the unit interval; Receiving terminal obtains original data signal through scrambler signal that receives and the pseudo-code signal that changes with the unit interval are deciphered.Therefore in the transmission of visible light signal, be difficult for being cracked, improved the fail safe of photon Internet of Things.
[description of drawings]
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1, a kind of decryption method flow chart that embodiment one provides based on visible light communication;
Fig. 2, a kind of decryption method flow chart that embodiment two provides based on visible light communication;
Fig. 3, a kind of decryption system structural representation that embodiment three provides based on visible light communication;
Fig. 4, a kind of decryption system structural representation that embodiment four provides based on visible light communication.
[embodiment]
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
At first, better understand the present invention, briefly introduce in the face of technical scheme of the present invention down in order to make those skilled in the art:
The invention provides and a kind ofly in the photon Internet of Things, the scrambler signal that receives is deciphered, restore the method for initial data.Pseudo-code sequence that this method adopts is can be according to the state machine principle along with continuous transition state of time, the signal that duplicates At All Other Times in, can not be received hold discern, can improve the fail safe of system.At first initial data and pseudo-code sequence are carried out logical operation; After modulation, just send on the visible light emitter again, and the pseudo-code sequence that pseudo-code generator produced of transmitting terminal and receiving terminal is according to the constantly variation in time of state machine principle, even the visible light signal of launching like this duplicates after being taken by high-speed camera; Because the pseudo-code sequence of receiving terminal changes in time in At All Other Times; So the signal that is replicated can't be received end again and discern, thereby can not control photon Internet of Things receiving device, like gate control system; Two-dimension code recognition system etc., the fail safe that can improve the photon Internet of Things effectively.
Embodiment one,
Referring to Fig. 1, be a kind of decryption method flow chart that the embodiment of the invention one provides based on visible light communication, this method comprises:
S101: receive the visible light signal that transmitting terminal sends, and just said visible light letter converts digital signal into.
S102: said digital signal and the pseudo-code signal that changes with the unit interval are deciphered, obtained original data signal.
Wherein, said pseudo-code signal is identical in the sign indicating number type and the start-phase of synchronization pseudo-code signal with said transmitting terminal.
Concrete, in the unit interval section for T1, the signal of reception is 001011001010101110010, and pseudo-code signal is 111010011101001110100, and this pseudo-code signal is identical with sign indicating number type, the original position of transmitting terminal T1 pseudo-code signal constantly.Logical operation process to the signal that receives from transmitting terminal and pseudo-code signal is as shown in table 1:
| The signal that receives | ?0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
| Pseudo-code signal | ?1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 |
| Decoding output signal | ?1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
Decode-history table in the table 1T1 unit interval
Because pseudo-code signal changed with the unit interval, so after a period of time of being separated by, be assumed to be the T2 time period, in the time period, the signal of reception is 010010000011001010000 at T2; At this moment pseudo-code signal is identical at the pseudo-code signal of T2 in the time period with transmitting terminal, is 100011010100101010110, and then its decode procedure is as shown in table 2:
| The signal that receives | ?0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
| Pseudo-code signal | ?1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 |
| Decoding output signal | ?1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
Decode-history table in the table 2T2 unit interval
Can know that from table 1 and table 2 decoding output signal is 110001010111100000110, has promptly decoded initial data.
Suppose that visible light signal that transmitting terminal sends is that scrambler signal 001011001010101110010 is caught by high-speed camera, and has carried out signal replication in the unit interval at T1 place.But after through a unit interval, if when having arrived the time at T2 place, when going to attempt controlling the equipment of receiving terminal with the signal that duplicates, because pseudo-code signal becomes 100011010100101010110, decode procedure is as shown in table 3:
| The signal that is replicated | ?0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
| Pseudo-code signal | ?1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 |
| Decoding output signal | ?1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 |
The signal interpretation process table that table 3T2 was replicated in the unit interval
Can know from table 3; Output signal behind the signal trial and error decoding that T2 was replicated in the unit interval is 101000011110000100100; With table 1 and table 2 decoding output signal 110001010111100000110 be inequality; Be that this signal that is replicated is can not be received end to discern, also just can not have controlled, improved fail safe equipment.
Among this embodiment one; Described in the photon Internet of Things manner of decryption based on visible light communication, the step of in this enforcement signal that receives and the pseudo-code signal that changes with the unit interval being deciphered is that example is described with the XOR; In concrete implementation process; Can also comprise other logical operation, for example logical AND repeats no more here.
Embodiment two,
Referring to Fig. 2, be a kind of decryption method flow chart that the embodiment of the invention two provides based on visible light communication, this method comprises:
S201: receive the visible light signal that transmitting terminal sends, and convert the visible light signal that receives into digital signal.
S202: digital signal is carried out demodulation, obtain restituted signal.For example, can adopt the corresponding demodulation modes of modulation system such as PCM, PWM, PPM, BPSK, QPSK, QAM, QNAM, said digital signal is carried out demodulation.
S203: decipher to restituted signal and with unit interval variation pseudo-code signal, obtain original data signal.
Wherein, said pseudo-code signal is identical in the sign indicating number type and the start-phase of synchronization pseudo-code signal with said transmitting terminal.
Concrete, in the unit interval section for T1, restituted signal is 001011001010101110010, and pseudo-code signal is 111010011101001110100, and this pseudo-code signal is identical with the first pseudo-code signal sign indicating number type, start-stop phase place in the table one.The decode procedure of restituted signal and pseudo-code signal is as shown in table 4:
| Restituted signal | ?0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
| Pseudo-code signal | ?1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 |
| Decoding output signal | ?1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
Decode-history table in the table 4T1 unit interval
As known from Table 4, decoding output signal is 110001010111100000110, has decoded original data signal.
Because pseudo-code signal changed with the unit interval; After a period of time, be assumed to be the T2 time period so be separated by, in the T2 time period; Restituted signal is 010010000011001010000; At this moment pseudo-code signal and transmitting terminal are also identical at the pseudo-code signal of T2 time period, are 100011010100101010110, and then its decode procedure is as shown in table 5:
| Restituted signal | ?0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
| Pseudo-code signal | ?1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 |
| Decoding output signal | ?1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
Decode-history table in the table 5T2 unit interval
As known from Table 5, decoding output signal is 110001010111100000110, has decoded initial data.
Suppose that visible light signal that transmitting terminal sends is that scrambler signal 001011001010101110010 is caught by high-speed camera, and has carried out signal replication in the unit interval at T1 place.But after through a unit interval; If when having arrived the time at T2 place; When going to attempt controlling the equipment of receiving terminal with the signal that duplicates, because pseudo-code signal becomes 100011010100101010110, the decode procedure of its generation is shown in the table 3 among the embodiment one.Can know from table 3; Output signal behind the signal trial and error decoding that T2 was replicated in the unit interval is 101000011110000100100; With the original data signal 110001010111100000110 in the table 1 be inequality; Be that this signal that is replicated is can not be received end to discern, also just can not have controlled, improved fail safe equipment.
S204: the original data signal to obtaining carries out authentication, if through authentication, controls connected functional unit action.For example, receiving terminal control gate access control system is carried out unlocking action.
Above method embodiment can find out, the visible light signal of transmission is the scrambler signal after encrypting, and this scrambler signal changes with the unit interval, is difficult for being cracked, thereby improved the fail safe of photon Internet of Things.
Above-mentioned method embodiment of the present invention is described, enumerates embodiment in the face of the hardware system of operation said method embodiment down and be described in detail.
Embodiment three,
Referring to Fig. 3; It is a kind of decryption system structural representation that the embodiment of the invention three provides based on visible light communication; This decryption system 301 comprises the visible light signal that is used to receive the transmitting terminal transmission, and converts the visible light signal that receives the receiving element 301a of digital signal into.Be used to produce and export the pseudo-code generator 301b of pseudo-code signal, the pseudo-code generator structure of this pseudo-code generator 301b and transmitting terminal is identical, operating frequency is identical or have the integral multiple relation and operating state synchronous.Also comprise with receiving element 301a being connected with pseudo-code generator 301b, being used for the signal and the said pseudo-code signal of receiving element 301a output are deciphered, export the decoder 301c of original data signal.Wherein, decoder 301c can be a frequency mixer.
Embodiment four,
Referring to Fig. 4, be a kind of decryption system structural representation that the embodiment of the invention four provides based on visible light communication, with respect to embodiment three, decryption system 301 also comprises:
Be connected between receiving element 301a and the decoder 301c, be used for demodulator 301d that the digital signal of receiving element 301a output is carried out demodulation.
In concrete implementation process, decryption system 301 also comprises connected functional unit, for example electric lock etc.
More than the embodiment of the invention has been carried out detailed introduction; Having used concrete example among this paper sets forth principle of the present invention and execution mode; For one of ordinary skill in the art, according to thought of the present invention, part all can change on embodiment and range of application; In sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the decryption method based on visible light communication is characterized in that, said method comprises:
Receive the visible light signal that transmitting terminal sends, convert said visible light letter into digital signal;
Said digital signal and the pseudo-code signal that changes with the unit interval are deciphered, obtained original data signal;
Wherein, said pseudo-code signal is identical in the sign indicating number type and the start-phase of synchronization pseudo-code signal with said transmitting terminal.
2. decryption method according to claim 1 is characterized in that, before said digital signal and the pseudo-code signal that changes with the unit interval are deciphered, also comprises:
Said digital signal is carried out demodulation.
3. decryption method according to claim 1 is characterized in that, said method also comprises:
Said original data signal to obtaining carries out authentication, if through authentication, controls connected functional unit action.
4. decryption method according to claim 1 is characterized in that, the frequency of said original data signal is identical with the frequency of said pseudo-code signal or have a relation of integral multiple.
5. decryption method according to claim 1 is characterized in that, said original data signal is identical with the start-phase of said pseudo-code signal.
6. the decryption system based on visible light communication is characterized in that, said system comprises and is used to receive the visible light signal that transmitting terminal sends, and converts said visible light signal the receiving element of digital signal into; Be used to produce and export the pseudo-code generator of the pseudo-code signal that changes with the unit interval; And be connected with said pseudo-code generator, be used for said digital signal and said pseudo-code signal are deciphered with said receiving element, the decoder of output original data signal.
7. decryption system according to claim 6 is characterized in that, said system also comprises:
Be connected between said receiving element and the said decoder, be used for said digital signal is carried out the demodulator of demodulation.
8. decryption system according to claim 6 is characterized in that, said pseudo-code generator is identical with the structure of the code generator of said transmitting terminal.
9. decryption system according to claim 6 is characterized in that the operating state of the pseudo-code generator of said pseudo-code generator and said transmitting terminal is synchronous.
10. decryption system according to claim 6 is characterized in that, the operating frequency of said pseudo-code generator and the pseudo-code generator of said transmitting terminal is identical or have a relation of integral multiple.
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| CN201210137316.6A CN102684869B (en) | 2012-05-07 | 2012-05-07 | Based on decryption method and the system of visible light communication |
| PCT/CN2013/075283 WO2013166958A1 (en) | 2012-05-07 | 2013-05-07 | Visible-light communication-based encryption, decryption and encryption/decryption method and system |
| US14/399,514 US9768958B2 (en) | 2012-05-07 | 2013-05-07 | Visible-light communication-based encryption, decryption and encryption/decryption method and system |
| EP13788399.7A EP2871800A4 (en) | 2012-05-07 | 2013-05-07 | Visible-light communication-based encryption, decryption and encryption/decryption method and system |
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Cited By (18)
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| WO2013166958A1 (en) * | 2012-05-07 | 2013-11-14 | 深圳光启创新技术有限公司 | Visible-light communication-based encryption, decryption and encryption/decryption method and system |
| CN104608509A (en) * | 2013-11-04 | 2015-05-13 | 深圳光启创新技术有限公司 | Printer, printing system and method and server |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201060495Y (en) * | 2007-06-01 | 2008-05-14 | 上海新大陆翼码信息科技有限公司 | Two-dimensional code reading equipment equipped with IC card reading component |
| CN101656728A (en) * | 2009-09-24 | 2010-02-24 | 杭州永控科技有限公司 | Secure transmission method using time-varying incidental information flow as key information |
-
2012
- 2012-05-07 CN CN201210137316.6A patent/CN102684869B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201060495Y (en) * | 2007-06-01 | 2008-05-14 | 上海新大陆翼码信息科技有限公司 | Two-dimensional code reading equipment equipped with IC card reading component |
| CN101656728A (en) * | 2009-09-24 | 2010-02-24 | 杭州永控科技有限公司 | Secure transmission method using time-varying incidental information flow as key information |
Cited By (51)
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|---|---|---|---|---|
| US9768958B2 (en) | 2012-05-07 | 2017-09-19 | Kuang-Chi Innovative Technology Ltd. | Visible-light communication-based encryption, decryption and encryption/decryption method and system |
| WO2013166958A1 (en) * | 2012-05-07 | 2013-11-14 | 深圳光启创新技术有限公司 | Visible-light communication-based encryption, decryption and encryption/decryption method and system |
| EP2871800A4 (en) * | 2012-05-07 | 2016-04-13 | Kuang Chi Innovative Tech Ltd | Visible-light communication-based encryption, decryption and encryption/decryption method and system |
| US10218914B2 (en) | 2012-12-20 | 2019-02-26 | Panasonic Intellectual Property Corporation Of America | Information communication apparatus, method and recording medium using switchable normal mode and visible light communication mode |
| US10205887B2 (en) | 2012-12-27 | 2019-02-12 | Panasonic Intellectual Property Corporation Of America | Information communication method |
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| US9646568B2 (en) | 2012-12-27 | 2017-05-09 | Panasonic Intellectual Property Corporation Of America | Display method |
| CN104871453B (en) * | 2012-12-27 | 2017-08-25 | 松下电器（美国）知识产权公司 | Image display method and device |
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