CN108989036A - High speed key secure distribution system and method based on chaotic laser light timesharing quantization - Google Patents
High speed key secure distribution system and method based on chaotic laser light timesharing quantization Download PDFInfo
- Publication number
- CN108989036A CN108989036A CN201811158431.5A CN201811158431A CN108989036A CN 108989036 A CN108989036 A CN 108989036A CN 201811158431 A CN201811158431 A CN 201811158431A CN 108989036 A CN108989036 A CN 108989036A
- Authority
- CN
- China
- Prior art keywords
- semiconductor laser
- light
- key
- chaos semiconductor
- light feedback
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/70—Photonic quantum communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/001—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using chaotic signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
Abstract
The invention belongs to secret communication fields, it is related to the cipher key distribution scheme of safety high speed, high speed key secure distribution system and method specially based on chaotic laser light timesharing quantization, the system comprises the random light source in broadband, fiber coupler, Alice communication party and Bob communication party, Alice communication party and Bob communication party include respective wavelength division multiplexer, eight light feedback chaos semiconductor lasers, eight path analoging switch, address latch and decoder, linear feedback shift register, photodetector, eight analog-digital converters, ternary output latch and memory.High speed key secure distribution system and method for the present invention based on chaotic laser light timesharing quantization, which effectively raises the safety of key distribution and accelerates key, generates and distributes rate.
Description
Technical field
The invention belongs to secret communication fields, are related to the cipher key distribution scheme of safety high speed, are specially based on chaotic laser light
The high speed key secure distribution system and method for timesharing quantization.
Background technique
Information security key is secret communication." one-time pad " that Shannon proposes provides for the secret communication being perfectly safe
Solution route [Bell Labs Technical Journal, 28 (4): 656-715,1949], i.e., with sufficiently random close
Key to encrypting in plain text, as long as guaranteeing that key length is not shorter than in plain text and key only uses once, communication is exactly to be perfectly safe
's.1. this requirement can generate a large amount of high speed random key；2. can be realized the secure distribution of high speed key.
Currently, the generation of the key of high speed and completely random has made important progress, such as the random key based on quantum state
The generation rate of generator reaches as high as Gbps magnitude [Reviews of Modern Physics, 89 (1): 015004-1-
015004-48,2017], and the generation rate of the random key generator based on broadband chaotic laser light up to Gbps magnitude even
Tbps magnitude [NaturePhotonics, 9 (3): 151-162,2015].In the generation technology for having grasped high speed random key
Later, the secure distribution of high speed key just becomes " one-time pad " and is perfectly safe the last one technical bottleneck of secret communication,
The urgency of research highlights further with importance.
Existing cipher key distribution scheme mainly includes two classes: the distribution of key based on mathematical algorithm with based on the close of physics entropy source
Key distribution.
1, the key distribution based on mathematical algorithm
It is encrypted currently, communication system generallys use mathematical algorithm, mainly includes DSE arithmetic and asymmetric cryptography body
System.The former carries out encryption and decryption to cleartext information using identical key and function, but key is distributed and manages this problem not
It solves.The latter solves the problems, such as that key discloses distribution using a pair of of public key and private component.But its safety is dependent on selected
The complexity of difficult math question, such as big factor of an integer decompose the discrete logarithm (ECC algorithm) of (RSA Algorithm), elliptic curve, this
Leading to safety and encryption/decryption speed is conflict.More intractable, the safety of mathematical algorithm encryption, which is established, to be eavesdropped
Person only has limited computing capability on the basis of this.With the raising of the computer speed of service and the optimization of attack algorithm,
The security facing great challenge of above-mentioned cipher key distribution scheme, such as on 2 23rd, 2017 Google just announce a disclosure
SHA-1 asymmetric arithmetic collision crack method.
2, the key distribution based on physics entropy source
Key distribution based on physics entropy source depends on the physical randomness of entropy source, and typical scenario includes quantum key point
Hair, the key distribution based on noisy communication channel feature, the key based on optical fiber laser gain fibre are distributed and are swashed based on chaos
The key of light correlation randomness is distributed.
(1) quantum key distribution
Quantum key distribution scheme is unconditional security: being based on uncertainty principle, listener-in can not accurately obtain quantum state
Information；Again due to quantum nonclonability principle, the eavesdropping of any pair of quantum key all can generate interference to legal communicating pair,
And [IEEE International Conference on Computers Systems and is found by legitimate correspondence both sides
Signal Processing,Bangalore, India, 1984].But damage is limited and transmitted by single photon detection efficiency
The influence of consumption, long range quantum key distribution still have the low technological difficulties of traffic rate, such as University of Geneva and healthy and free from worry public affairs
The quantum key distribution rate for the 307km optical fiber link that department's cooperation is realized be only 3.18bps [Nature Photonics, 9
(3): 163-168, 2015]。
(2) the key distribution based on noisy communication channel feature
Key distribution based on noisy communication channel feature be utilize the common signal channel feature of " in short-term unanimously " as random signal source, and
Channel characteristics are converted into association key by subsequent negotiations, finally realize the shared and distribution [Proceedings of consistent key
of the 2007 ACM Conference on Computerand Communications Security, Virginia,
USA, 2007].Noisy communication channel is characterized in being resulted in by the multipath faidng of space channel, very sensitive to external interference, any
Eavesdropping all can cause the bit error rate of legitimate correspondence side to be significantly increased because introducing external interference, and then be discovered by legitimate correspondence side.
But it is influenced by space transmission loss, which is only applicable to short-distance wireless communication, and typical distribution rate at present
Only 22bps [IEEE Transactions on MobileComputing, 9 (1): 17-30,2010], can not with it is existing
Traffic rate matching.
(3) the key distribution based on optical fiber laser gain fibre
Key distribution based on optical fiber laser gain fibre is using the overlength gain fibre of optical fiber laser as key point
Transmission path is sent out, and is modulated in the Trail termination of communicating pair using the private key tune of independent random --- randomly select reflection
The different fibre scope of wavelength [PhysicalReview Letters, 97 (14): 140502,2006].When optical fiber specular reflection
When long different, optical fiber laser cannot achieve starting of oscillation output, and listener-in cannot be distinguished according to the output state of laser at this time and close
The key modulation case of method user, but legitimate user counter can push away pair according to one's own side's key modulation case and laser output state
Square key modulation case finally realizes that the safety of consistent key is shared and distributes.However, the program need to make laser signal in overlength
The intracavitary progress of oscillation that gain fibre is constituted more weeks, which repeat transmission, could complete the distribution of 1 bit keys, significantly limit key
Distribute rate, such as the key that Israel professor Scheuer is realized using the optical fiber laser that gain fibre length is 500km
Distributing rate is only [Laser & Photonics Reviews, 8 (3): 436-442,2014] 100bps.
(4) the key distribution based on chaotic laser light correlation randomness
Key distribution based on chaotic laser light correlation randomness is that legitimate user is believed using synchronous chaos laser as correlation
Number source and it is modulated using the key pair of independent random, finally choose the chaotic time series under identical modulation condition extract it is consistent
Key [Physical Review Letters, 108 (7): 070602,2012].But key modulates shape in this scenario
When state difference, the synchronism of chaotic laser light will be destroyed；When key modulation condition restores identical, the synchronism of chaotic laser light
Can not instant recovery, limit key distribution rate.Such as Japan Uchida professor is with the synchronous chaos laser in strange land
Correlated Signals are modulated in conjunction with independent random of the private key to chaos system feedback light path phase, and finally only realizing rate is
The key of 184kbps distributes [Optics Express, 25 (21): 26029-26044,2017].
To sum up, there is safety difference in the cipher key distribution scheme based on mathematical algorithm；And based on the close of physics entropy source
Although safety can be improved in key distribution approach, but have the shortcomings that distribution rate is low.Therefore, a kind of the close of safety high speed is invented
Key distribution technology provides solution for " one-time pad " be perfectly safe secret communication the last one technical bottleneck, is extremely to have
It is necessary.
Summary of the invention
It is an object of the invention to solve the problems, such as that existing key distribution technique safety is poor, key distribution rate is low, mention
The high speed key secure distribution system and method quantified based on chaotic laser light timesharing is supplied.
The present invention the technical solution to solve the technical problem is that: the high speed key based on chaotic laser light timesharing quantization is safely point
Hair system, including the random light source in broadband, fiber coupler, Alice communication party and Bob communication party；The Alice communication party includes
First wavelength division multiplexer, the one or eight path analoging switch, the first address latch and decoder, the first linear feedback shift register,
First ternary output latch and first memory；The output end of first wavelength division multiplexer be all different respectively by wavelength
One side's A light feedback chaos semiconductor laser, the 2nd side's A light feedback chaos semiconductor laser, the 3rd side's A light feedback chaos half
Conductor laser, the 4th side's A light feedback chaos semiconductor laser, the 5th side's A light feedback chaos semiconductor laser, the 6th A
Square light feedback chaos semiconductor laser, the 7th side's A light feedback chaos semiconductor laser and the 8th side's A light feedback chaos are partly led
Body laser is connected to the input terminal of the one or eight path analoging switch, and the one or eight path analoging switch passes sequentially through the spy of the first photoelectricity
It surveys device and the one or eight analog-digital converter is connected to the input terminal of the first ternary output latch, first ternary output latches
The first input end of the output end of device and first memory connects, the one or eight path analoging switch by the first address latch with translate
It is first defeated to be connected to the first linear feedback shift register for code device control, the input terminal of first address latch and decoder
The second output terminal of outlet, first linear feedback shift register is connected to the second input terminal of first memory, described
The consistent key in the output end output side A of first memory；The Bob communication party includes the second wavelength division multiplexer, the two or eight road mould
Quasi- switch, the second address latch and decoder, the second linear feedback shift register, the second ternary output latch and second are deposited
Reservoir；The first side's B light feedback chaos semiconductor laser that the output end of second wavelength division multiplexer is all different by wavelength respectively
Device, the 2nd side's B light feedback chaos semiconductor laser, the 3rd side's B light feedback chaos semiconductor laser, the 4th side's B light feedback
Chaos semiconductor laser, the 5th side's B light feedback chaos semiconductor laser, the 6th side's B light feedback chaos semiconductor laser,
7th side's B light feedback chaos semiconductor laser and the 8th side's B light feedback chaos semiconductor laser are connected to the two or eight road mould
The input terminal of quasi- switch, the two or eight path analoging switch pass sequentially through the second photodetector and the two or eight analog-digital converter
It is connected to the input terminal of the second ternary output latch, the output end of the second ternary output latch and second memory
First input end connection, the two or eight path analoging switch are controlled by the second address latch and decoder, the second address lock
The first output end that the second linear feedback shift register is connected to the input terminal of decoder is deposited, second linear feedback is moved
The second output terminal of bit register is connected to the second input terminal of second memory, and the output end of the second memory exports B
The consistent key in side；The wavelength of described first to the 8th side's A light feedback chaos semiconductor laser respectively with the described first to the 8th B
The wavelength of square light feedback chaos semiconductor laser is equal to each other；First address latch and decoder and the second address latch
It include three address wires with decoder；The output end of the random light source in broadband is connected to the input terminal of fiber coupler, institute
The top output end for stating fiber coupler is connected to the input terminal of the first wavelength division multiplexer, the lower section output of the fiber coupler
End is connected to the input terminal of the second wavelength division multiplexer, is connected with common signal channel between the first memory and second memory；Institute
State the one or eight path analoging switch, the two or eight path analoging switch, the one or eight analog-digital converter, the two or eight analog-digital converter,
One ternary output latch, the second ternary output latch, first memory and second memory by clock synthesizer into
Row synchronously control.The model SG54HC137 of first address latch and decoder, the second address latch and decoder, and
It is that positive electron Science and Technology Ltd. of Xi'an state produces.
Wherein, the wavelength of first to the 8th side's A light feedback chaos semiconductor laser respectively with the described first to the 8th side B
The wavelength of light feedback chaos semiconductor laser is equal to each other, the communicating pair that just wavelength can be made equal (Alice communication party and
Bob communication party) extract consistent key；First address latch and decoder and the second address latch and decoder include three
Address wire, every address wire are modulated to 0 or 1, then have eight kinds of different combinations, this eight kinds combinations can respectively correspond first
The switching information of eight path analoging switch and the two or eight path analoging switch.
Based on the high speed key safety distributing method of chaotic laser light timesharing quantization, this method is based on base of the present invention
It is realized in the high speed key secure distribution system of chaotic laser light timesharing quantization, specific steps are as follows:
The random light source in broadband is divided into two paths of signals by fiber coupler, is transmitted to the first wavelength division multiplexer all the way, another
Road is transmitted to the second wavelength division multiplexer；
First wavelength division multiplexer divides the signal into the signal of eight road different wave lengths, and the signal of eight road different wave lengths respectively drives
The first side's A light feedback chaos semiconductor laser, the 2nd side's the A light feedback chaos semiconductor laser, the 3rd side A of corresponding wavelength
Light feedback chaos semiconductor laser, the 4th side's A light feedback chaos semiconductor laser, the 5th side's A light feedback chaos semiconductor
Laser, the 6th side's A light feedback chaos semiconductor laser, the 7th side's A light feedback chaos semiconductor laser and the 8th side's A light
Feedback chaos semiconductor laser, the second wavelength division multiplexer is similarly in the first wavelength division multiplexer, and the second wavelength division multiplexer is by signal
It is divided into the signal of eight road different wave lengths, the signal of eight road different wave lengths respectively drives the first side's B light feedback chaos of corresponding wavelength
Semiconductor laser, the 2nd side's B light feedback chaos semiconductor laser, the 3rd side's B light feedback chaos semiconductor laser, the 4th
The side's B light feedback chaos semiconductor laser, the 5th side's B light feedback chaos semiconductor laser, the 6th side's B light feedback chaos are partly led
Body laser, the 7th side's B light feedback chaos semiconductor laser and the 8th side's B light feedback chaos semiconductor laser, thus
The Alice communication party chaotic laser light signal synchronous with the equal output multi-channel of Bob communication party；
The chaotic laser light signal of the Multi-path synchronous of the side A is input to the one or eight path analoging switch, and the one or eight path analoging switch is by
The side's A private key of one address latch and decoder direct regulation and control, the first address latch and decoder is posted by the first linear feedback shift
Storage provides, and the side's A private key is stored in first memory by the first linear feedback shift register in real time；The side B is similarly in A
Side, the chaotic laser light signal of the Multi-path synchronous of the side B are input to the two or eight path analoging switch, and the two or eight path analoging switch is by the second
Location is latched and decoder direct regulation and control, and the side's B private key of the second address latch and decoder is by the second linear feedback shift register
It provides, and the side's B private key is stored in second memory by the second linear feedback shift register in real time；
One or eight path analoging switch of the side A exports the chaotic laser light signal that selection passes through to the first photodetector, and first
Photodetector exports after the chaotic laser light signal that selection passes through is converted to electric signal to the one or eight analog-digital converter；The side B
Similarly in the side A, the two or eight path analoging switch of the side B exports the chaotic laser light signal that selection passes through to the second photodetector,
Second photodetector exports after the chaotic laser light signal that selection passes through is converted to electric signal to the two or eight analog-digital converter；
One or eight analog-digital converter and the two or eight analog-digital converter carry out successive approximation to quantification to the signal of input,
And each signal sampling point will be quantified as eight 0/1 bits (i.e. key)；
0,1 bit that the side A and the quantization of the side B generate is output to the first ternary output latch and the second ternary output respectively
Latch, the first ternary output latch and the second ternary output latch are all raw to respective 8 bits position respectively
Respective 8 bits position is exported and is stored in first memory and second memory respectively as the naked key in the side A and B by Cheng Hou
The naked key in side, the naked key in the side the A storage corresponding with the side's A private key, the naked key in the side the B storage corresponding with the side's B private key；
The side A and the side B pass through common signal channel and swap the side's A private key and the side's B private key, then compare, the last side's A choosing
Take the naked key in the side A corresponding to the side's B private key identical with the side's A private key as the output of the consistent key in the side A；The side B is described similarly in the side A
The side B chooses the naked key in the side B corresponding to identical with the side's the B private key side's A private key and exports as the consistent key in the side B, final one densification of the side A
Key key consistent with the side B is equal.
In above-mentioned entire method, the one or the eight path analoging switch 5a1, the two or eight path analoging switch 5b1, the one or eight mould
Number converter, the two or eight analog-digital converter, the first ternary output latch, the second ternary output latch, first memory
And second memory synchronizes control by clock synthesizer.
Compared with prior art, the beneficial effects of the present invention are:
High speed key secure distribution system and method for the present invention based on chaotic laser light timesharing quantization is to utilize broadband
Random light source driving light feedback chaos semiconductor laser generates Multi-path synchronous signal.Due to exist observation limitation, listener-in with
The prior art can not complete copy reproduce this broadband signal, then can not generate and the ex curia Multi-path synchronous of legitimate correspondence is believed
Number；In addition, the present invention also carries out random timesharing quantization to Multi-path synchronous signal using the private key keying of independent random, only modulate
The signal of the energetic same channels of the identical ability of private key simultaneously generates consistent key, and listener-in can not learn the tune of communicating pair completely
Private key processed, and then cannot be generated and the ex curia key of legitimate correspondence by quantization same channels signal.Therefore, the program is close
The safety of key distribution is just guaranteed；
High speed key secure distribution system and method for the present invention based on chaotic laser light timesharing quantization utilizes private key pair
Eight path analoging switch carry out random keying, and in non-traditional feedback light path phase random keying, avoid Chaotic Synchronous recovery
Limitation of the time to key distribution rate；In addition, this programme uses eight quantization methods, each sampled point is quantified as eight
0/1 bit, and a unconventional sampled point is quantified as 1 0/1 bit, the generation of key and distribution rate will be by multiplications
Add.
In conclusion the high speed key secure distribution system and method for the present invention based on chaotic laser light timesharing quantization
It effectively raises the safety of key distribution and accelerates key and generate and distribute rate.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure: the random light source in the broadband 1-；2- fiber coupler；The first wavelength division multiplexer of 3a-；The second wavelength division multiplexer of 3b-；
The first side's A light feedback chaos semiconductor laser of 4a1-；The 2nd side's A light feedback chaos semiconductor laser of 4a2-；The 3rd A of 4a3-
Square light feedback chaos semiconductor laser；The 4th side's A light feedback chaos semiconductor laser of 4a4-；The 5th side's A light of 4a5- feedback
Chaos semiconductor laser；The 6th side's A light feedback chaos semiconductor laser of 4a6-；The 7th side's A light feedback chaos of 4a7- are partly led
Body laser；The 8th side's A light feedback chaos semiconductor laser of 4a8-；The first side's B light feedback chaos semiconductor laser of 4b1-；
The 2nd side's B light feedback chaos semiconductor laser of 4b2-；The 3rd side's B light feedback chaos semiconductor laser of 4b3-；The 4th B of 4b4-
Square light feedback chaos semiconductor laser；The 5th side's B light feedback chaos semiconductor laser of 4b5-；The 6th side's B light of 4b6- feedback
Chaos semiconductor laser；The 7th side's B light feedback chaos semiconductor laser of 4b7-；The 8th side's B light feedback chaos of 4b8- are partly led
Body laser；The one or eight path analoging switch of 5a1-；The first address latch of 5a2- and decoder；The first linear feedback shift of 5a3- is posted
Storage；The two or eight path analoging switch of 5b1-；The second address latch of 5b2- and decoder；The second linear feedback shift register of 5b3-
Device；6- clock synthesizer；The first photodetector of 7a-；The second photodetector of 7b-；The one or eight analog-digital converter of 8a-；8b-
Two or eight analog-digital converter；9a- the first ternary output latch；9b- the second ternary output latch；10a- first is stored
Device；10b- second memory；The consistent key in the side 11a-A；The consistent key in the side 11b-B.
Specific embodiment
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to skill of the invention
Art scheme is described in detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than all real
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art without making creative work gained
The every other embodiment arrived belongs to the range that the present invention is protected.
Referring to attached drawing 1, now to the high speed key secure distribution system provided by the invention based on chaotic laser light timesharing quantization
And method is illustrated.
Based on the high speed key secure distribution system of chaotic laser light timesharing quantization, as shown in Figure 1, including the random light source in broadband
1, fiber coupler 2, Alice communication party and Bob communication party；The Alice communication party includes the first wavelength division multiplexer 3a, first
Eight path analoging switch 5a1, the first address latch and decoder 5a1, the first linear feedback shift register 5a3, the first tri-state are defeated
Latch 9a and first memory 10a out；The first A that the output end of first wavelength division multiplexer 3a is all different by wavelength respectively
Square light feedback chaos semiconductor laser 4a1, the 2nd side A light feedback chaos semiconductor laser 4a2, the 3rd side's A light feedback are mixed
Ignorant semiconductor laser 4a3, the 4th side A light feedback chaos semiconductor laser 4a4, the 5th side's A light feedback chaos semiconductor swash
Light device 4a5, the 6th side A light feedback chaos semiconductor laser 4a6, the 7th side A light feedback chaos semiconductor laser 4a7 and
Eight side A light feedback chaos semiconductor laser 4a8 are connected to the input terminal of the one or eight path analoging switch 5a1, the one or eight tunnel
Analog switch 5a1 passes sequentially through the first photodetector 7a and the one or eight analog-digital converter 8a and is connected to the first ternary output lock
The input terminal of storage 9a, the output end of the first ternary output latch 9a and the first input end of first memory 10a connect
Connect, the one or the eight path analoging switch 5a1 is controlled by the first address latch and decoder 5a2, first address latch with translate
The input terminal of code device 5a2 is connected to the first output end of the first linear feedback shift register 5a3, and first linear feedback is moved
The second output terminal of bit register 5a3 is connected to the second input terminal of first memory 10a, and the first memory 10a's is defeated
Outlet exports the consistent key 11a in the side A；The Bob communication party include the second wavelength division multiplexer 3b, the two or eight path analoging switch 5b1,
Second address latch and decoder 5b2, the second linear feedback shift register 5b3, the second ternary output latch 9b and second
Memory 10b；The output end of second wavelength division multiplexer 3b is partly led by the first side's B light feedback chaos that wavelength is all different respectively
Body laser 4b1, the 2nd side B light feedback chaos semiconductor laser 4b2, the 3rd side's B light feedback chaos semiconductor laser
4b3, the 4th side B light feedback chaos semiconductor laser 4b4, the 5th side B light feedback chaos semiconductor laser 4b5, the 6th side B
Light feedback chaos semiconductor laser 4b6, the 7th side B light feedback chaos semiconductor laser 4b7 and the 8th side's B light feedback chaos
Semiconductor laser 4b8 is connected to the input terminal of the two or eight path analoging switch 5b1, and the two or the eight path analoging switch 5b1 is successively
The input terminal of the second ternary output latch 9b is connected to by the second photodetector 7b and the two or eight analog-digital converter 8b,
The output end of the second ternary output latch 9b is connect with the first input end of second memory 10b, the two or eight tunnel
Analog switch 5b1 is controlled by the second address latch and decoder 5b2, the input terminal of second address latch and decoder 5b2
It is connected to the first output end of the second linear feedback shift register 5b3, the of the second linear feedback shift register 5b3
Two output ends are connected to the second input terminal of second memory 10b, and the output end output side B of the second memory 10b is consistent
Key 11b；Described first to the 8th side A light feedback chaos semiconductor laser 4a1,4a2,4a3,4a4,4a5,4a6,4a7,
The wavelength of 4a8 respectively with the described first to the 8th side B light feedback chaos semiconductor laser 4b1,4b2,4b3,4b4,4b5,
The wavelength of 4b6,4b7,4b8 are equal to each other；First address latch and decoder 5a2 and the second address latch and decoder
5b2 includes three address wires；The output end of the random light source 1 in broadband is connected to the input terminal of fiber coupler 2, the light
The top output end of fine coupler 2 is connected to the input terminal of the first wavelength division multiplexer 3a, the lower section output of the fiber coupler 2
End is connected to the input terminal of the second wavelength division multiplexer 3b, is connected between the first memory 10a and second memory 10b public
Channel；One or the eight path analoging switch 5a1, the two or eight path analoging switch 5b1, the one or eight analog-digital converter 8a, the two or eight
Position analog-digital converter 8b, the first ternary output latch 9a, the second ternary output latch 9b, first memory 10a and the
Two memory 10b synchronize control by clock synthesizer 6.
Wherein, first to the 8th side A light feedback chaos semiconductor laser 4a1,4a2,4a3,4a4,4a5,4a6,4a7,
The wavelength of 4a8 respectively with the described first to the 8th side B light feedback chaos semiconductor laser 4b1,4b2,4b3,4b4,4b5,
The wavelength of 4b6,4b7,4b8 are equal to each other, and the communicating pair (Alice communication party and Bob communication party) that just wavelength can be made equal mentions
Take consistent key；First address latch and decoder 5a2 and the second address latch and decoder 5b2 include three addresses
Line, every address wire are modulated to 0 or 1, then have eight kinds of different combinations, this eight kinds combinations can respectively correspond the one or eight road mould
The switching information of quasi- switch 5a1 and the two or eight path analoging switch 5b1.
Based on the high speed key safety distributing method of chaotic laser light timesharing quantization, this method is based on base of the present invention
It is realized in the high speed key secure distribution system of chaotic laser light timesharing quantization, specific steps are as follows:
The random light source 1 in broadband is divided into two paths of signals by fiber coupler 2, is transmitted to the first wavelength division multiplexer 3a all the way,
Another way is transmitted to the second wavelength division multiplexer 3b；
First wavelength division multiplexer 3a divides the signal into the signal of eight road different wave lengths, and the signal of eight road different wave lengths drives respectively
The first side A light feedback chaos semiconductor laser 4a1, the 2nd side's the A light feedback chaos semiconductor laser of dynamic corresponding wavelength
4a2, the 3rd side A light feedback chaos semiconductor laser 4a3, the 4th side A light feedback chaos semiconductor laser 4a4, the 5th side A
Light feedback chaos semiconductor laser 4a5, the 6th side A light feedback chaos semiconductor laser 4a6, the 7th side's A light feedback chaos
Semiconductor laser 4a7 and the 8th side A light feedback chaos semiconductor laser 4a8, the second wavelength division multiplexer 3b is similarly in first
Wavelength division multiplexer 3a, the second wavelength division multiplexer 3b divide the signal into the signal of eight road different wave lengths, the signal of eight road different wave lengths
Respectively drive the first side B light feedback chaos semiconductor laser 4b1 of corresponding wavelength, the 2nd side's B light feedback chaos semiconductor swashs
Light device 4b2, the 3rd side B light feedback chaos semiconductor laser 4b3, the 4th side B light feedback chaos semiconductor laser 4b4,
Five side B light feedback chaos semiconductor laser 4b5, the 6th side B light feedback chaos semiconductor laser 4b6, the 7th side's B light feedback
Chaos semiconductor laser 4b7 and the 8th side B light feedback chaos semiconductor laser 4b8, so that Alice communication party and Bob are logical
Letter side's synchronous chaotic laser light signal of output multi-channel；
The chaotic laser light signal of the Multi-path synchronous of the side A is input to the one or eight path analoging switch 5a1, the one or eight path analoging switch
5a1 is by the first address latch and decoder 5a2 direct regulation and control, and the side's A private key of the first address latch and decoder 5a2 are by First Line
Property feedback shift register 5a3 provide, and the side's A private key is stored in first in real time and deposited by the first linear feedback shift register 5a3
In reservoir 10a；Similarly in the side A, the chaotic laser light signal of the Multi-path synchronous of the side B is input to the two or eight path analoging switch 5b1 for the side B,
Two or eight path analoging switch 5b1 is by the second address latch and decoder 5b2 direct regulation and control, the second address latch and decoder 5b2
The side's B private key provided by the second linear feedback shift register 5b3, and the second linear feedback shift register 5b3 is by the side's B private key
It is stored in second memory 10b in real time；
One or eight path analoging switch 5a1 of the side A exports the chaotic laser light signal that selection passes through to the first photodetector
Output to the one or eight modulus turns after the chaotic laser light signal that selection passes through is converted to electric signal by 7a, the first photodetector 7a
Parallel operation 8a；Similarly in the side A, the two or eight path analoging switch 5b1 of the side B exports chaotic laser light signal that selection passes through to for the side B
The chaotic laser light signal that passes through of selection is converted to after electric signal output to the by two photodetector 7b, the second photodetector 7b
Sixteen analog-digital converter 8b；
One or eight analog-digital converter 8a and the two or eight analog-digital converter 8b carries out Approach by inchmeal amount to the signal of input
Change, and each signal sampling point will be quantified as eight 0/1 bits (i.e. key)；
0,1 bit that the side A and the quantization of the side B generate is output to the first ternary output latch 9a and the second ternary output respectively
Latch 9b, the first ternary output latch 9a and the second ternary output latch 9b are respectively to respective 8 bits position
After all generating, respective 8 bits position is exported and is stored in first memory 10a and second memory 10b respectively and is made
For the naked key of the naked key in the side A and the side B, the naked key in the side the A storage corresponding with the side's A private key, the naked key in the side the B storage corresponding with the side's B private key；
The side A and the side B pass through common signal channel and swap the side's A private key and the side's B private key, then compare, the last side's A choosing
Take the naked key in the side A corresponding to the side's B private key identical with the side's A private key as the consistent key 11a in the side A output；The side B is similarly in the side A, institute
It states the side B and chooses the naked key in the side B corresponding to identical with the side's the B private key side's A private key and exported as the consistent key 11b in the side B, the final side A
Consistent key 11a key 11b consistent with the side B is equal.
In above-mentioned entire method, the one or the eight path analoging switch 5a1, the two or eight path analoging switch 5b1, the one or eight mould
Number converter 8a, the two or eight analog-digital converter 8b, the first ternary output latch 9a, the second ternary output latch 9b,
One memory 10a and second memory 10b synchronizes control by clock synthesizer 6.First address latch and decoder
5a2 and the second address latch have with decoder 5b2、、Three private key keying address wires, and、、Three private key keys
It controls in address wireKeying private key,Keying private key andThe combined situation of keying private key is as shown in table 1.The simulation of one or eight tunnel is opened
5a1 and the two or eight path analoging switch 5b1 is closed the case where gating channel respectively under the regulation of the side's A private key and the side's B private key such as table
Shown in 1, if such as Alice communication party and Bob communication partyKeying private key,Keying private key andThe combined situation of keying private key
It is identical, for example be 010, the then side A and the side B be then that the channel with identical chaotic signal i.e. the 3rd side's A light feedback chaos are partly led
Body laser 4a3, the 3rd side B light feedback chaos semiconductor laser 4b3；If Alice communication party and Bob communication party'sKeying
Private key,Keying private key andThe combined situation of keying private key is not identical, for example Alice communication party is that 011, Bob communication party is
100, then the side A and the side B are the channel with different chaotic signals i.e. the 4th side A light feedback chaos semiconductor laser 4a4, the 5th
The side B light feedback chaos semiconductor laser 4b5.
Table 1
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned embodiment party
Formula can also be done without departing from the purpose of the present invention within the knowledge of a person skilled in the art
Various change out.
Claims (2)
1. the high speed key secure distribution system based on chaotic laser light timesharing quantization, which is characterized in that including the random light source in broadband
(1), fiber coupler (2), Alice communication party and Bob communication party；The Alice communication party includes the first wavelength division multiplexer
(3a), the one or eight path analoging switch (5a1), the first address latch and decoder (5a2), the first linear feedback shift register
(5a3), the first ternary output latch (9a) and first memory (10a)；The output end of first wavelength division multiplexer (3a) is distinguished
Pass through the first different side's A light feedback chaos semiconductor laser (4a1) of wavelength, the 2nd side's A light feedback chaos semiconductor
Laser (4a2), the 3rd side's A light feedback chaos semiconductor laser (4a3), the 4th side's A light feedback chaos semiconductor laser
(4a4), the 5th side's A light feedback chaos semiconductor laser (4a5), the 6th side's A light feedback chaos semiconductor laser (4a6),
7th side's A light feedback chaos semiconductor laser (4a7) and the 8th side's A light feedback chaos semiconductor laser (4a8) are connected to
The input terminal of one or eight path analoging switch (5a1), the one or eight path analoging switch (5a1) pass sequentially through the first photodetector
(7a) and the one or eight analog-digital converter (8a) are connected to the input terminal of the first ternary output latch (9a), first tri-state
The output end of output latch (9a) is connect with the first input end of first memory (10a), the one or eight path analoging switch
(5a1) is controlled by the first address latch and decoder (5a2), and the input terminal of first address latch and decoder (5a2) connect
It is connected to the first output end of the first linear feedback shift register (5a3), first linear feedback shift register (5a3)
Second output terminal is connected to the second input terminal of first memory (10a), and the output end of the first memory (10a) exports A
The consistent key (11a) in side；The Bob communication party includes the second wavelength division multiplexer (3b), the two or eight path analoging switch (5b1), the
Double-address latch with decoder (5b2), the second linear feedback shift register (5b3), the second ternary output latch (9b) and
Second memory (10b)；The output end of second wavelength division multiplexer (3b) passes through different the first side's the B light feedback of wavelength respectively
Chaos semiconductor laser (4b1), the 2nd side's B light feedback chaos semiconductor laser (4b2), the 3rd side's B light feedback chaos half
Conductor laser (4b3), the 4th side's B light feedback chaos semiconductor laser (4b4), the 5th side's B light feedback chaos semiconductor swash
Light device (4b5), the 6th side's B light feedback chaos semiconductor laser (4b6), the 7th side's B light feedback chaos semiconductor laser
(4b7) and the 8th side's B light feedback chaos semiconductor laser (4b8) are connected to the input terminal of the two or eight path analoging switch (5b1),
Two or eight path analoging switch (5b1) passes sequentially through the second photodetector (7b) and the two or eight analog-digital converter (8b) even
It is connected to the input terminal of the second ternary output latch (9b), the output end of the second ternary output latch (9b) is deposited with second
The first input end of reservoir (10b) connects, and the two or eight path analoging switch (5b1) is by the second address latch and decoder
(5b2) control, the input terminal of second address latch and decoder (5b2) are connected to the second linear feedback shift register
The second output terminal of first output end of (5b3), second linear feedback shift register (5b3) is connected to second memory
Second input terminal of (10b), the consistent key (11b) in the output end output side B of the second memory (10b)；Described first to
The wavelength of 8th side's A light feedback chaos semiconductor laser (4a1,4a2,4a3,4a4,4a5,4a6,4a7,4a8) respectively with institute
State the wavelength of first to the 8th side's B light feedback chaos semiconductor laser (4b1,4b2,4b3,4b4,4b5,4b6,4b7,4b8)
It is equal to each other；First address latch and decoder (5a2) and the second address latch and decoder (5b2) include three ground
Location line；The output end of the random light source in broadband (1) is connected to the input terminal of fiber coupler (2), the fiber coupler (2)
Top output end be connected to the input terminal of the first wavelength division multiplexer (3a), the lower output of the fiber coupler (2) connects
It is connected to the input terminal of the second wavelength division multiplexer (3b), is connected with public affairs between the first memory (10a) and second memory (10b)
Channel altogether；One or eight path analoging switch (5a1), the two or eight path analoging switch (5b1), the one or eight analog-digital converter
(8a), the two or eight analog-digital converter (8b), the first ternary output latch (9a), the second ternary output latch (9b),
One memory (10a) and second memory (10b) synchronize control by clock synthesizer (6).
2. the high speed key safety distributing method based on chaotic laser light timesharing quantization, which is characterized in that the method is based on power
Benefit require 1 described in based on chaotic laser light timesharing quantization high speed key secure distribution system realize, specific steps are as follows:
The random light source in broadband (1) is divided into two paths of signals by fiber coupler (2), is transmitted to the first wavelength division multiplexer all the way
(3a), another way are transmitted to the second wavelength division multiplexer (3b)；
First wavelength division multiplexer (3a) divides the signal into the signal of eight road different wave lengths, and the signal of eight road different wave lengths drives respectively
The first side's A light feedback chaos semiconductor laser (4a1), the 2nd side's the A light feedback chaos semiconductor laser of dynamic corresponding wavelength
(4a2), the 3rd side's A light feedback chaos semiconductor laser (4a3), the 4th side's A light feedback chaos semiconductor laser (4a4),
5th side's A light feedback chaos semiconductor laser (4a5), the 6th side's A light feedback chaos semiconductor laser (4a6), the 7th side A
Light feedback chaos semiconductor laser (4a7) and the 8th side's A light feedback chaos semiconductor laser (4a8), the second wavelength-division multiplex
For device (3b) similarly in the first wavelength division multiplexer (3a), the second wavelength division multiplexer (3b) divides the signal into the letter of eight road different wave lengths
Number, the signal of eight road different wave lengths respectively drives the first side's B light feedback chaos semiconductor laser (4b1) of corresponding wavelength,
Two side's B light feedback chaos semiconductor lasers (4b2), the 3rd side's B light feedback chaos semiconductor laser (4b3), the 4th side's B light
Feedback chaos semiconductor laser (4b4), the 5th side's B light feedback chaos semiconductor laser (4b5), the 6th side's B light feedback are mixed
Ignorant semiconductor laser (4b6), the 7th side's B light feedback chaos semiconductor laser (4b7) and the 8th side's B light feedback chaos are partly led
Body laser (4b8), thus the chaotic laser light signal that Alice communication party is synchronous with the equal output multi-channel of Bob communication party；
The chaotic laser light signal of the Multi-path synchronous of the side A is input to the one or eight path analoging switch (5a1), the one or eight path analoging switch
(5a1) by the first address latch and decoder (5a2) direct regulation and control, the side's A private key of the first address latch and decoder (5a2) by
First linear feedback shift register (5a3) provides, and the first linear feedback shift register (5a3) protects the side's A private key in real time
It is stored in first memory (10a)；Similarly in the side A, the chaotic laser light signal of the Multi-path synchronous of the side B is input to the two or eight tunnel for the side B
Analog switch (5b1), the two or eight path analoging switch (5b1) is by the second address latch and decoder (5b2) direct regulation and control, the second ground
Location, which is latched, to be provided with the side's B private key of decoder (5b2) by the second linear feedback shift register (5b3), and the second linear feedback
The side's B private key is stored in second memory (10b) by shift register (5b3) in real time；
One or eight path analoging switch (5a1) of the side A exports the chaotic laser light signal that selection passes through to the first photodetector
(7a), the first photodetector (7a) export after the chaotic laser light signal that selection passes through is converted to electric signal to the one or eight mould
Number converter (8a)；The chaotic laser light signal that the side B similarly passes through selection in the side A, the two or eight path analoging switch (5b1) of the side B
The chaotic laser light signal that selection passes through is converted to telecommunications by output to the second photodetector (7b), the second photodetector (7b)
It exports after number to the two or eight analog-digital converter (8b)；
One or eight analog-digital converter (8a) and the two or eight analog-digital converter (8b) carry out Approach by inchmeal to the signal of input
Quantization, and each signal sampling point will be quantified as eight 0/1 bits；
0,1 bit that the side A and the quantization of the side B generate is output to the first ternary output latch (9a) respectively and the second tri-state is defeated
Latch (9b) out, the first ternary output latch (9a) and the second ternary output latch (9b) are respectively to respective eight
After a bit all generates, respective 8 bits position is exported and is stored in first memory (10a) and second respectively and is deposited
As the naked key in the side A and the naked key in the side B in reservoir (10b), the naked key in the side A is corresponding with the side's A private key to be stored, the naked key in the side B and the side B
The corresponding storage of private key；
The side A and the side B pass through common signal channel and swap the side's A private key and the side's B private key, then compare, and the last side A chooses
The naked key in the side A corresponding to the side's B private key identical with the side's A private key is as the output of the consistent key (11a) in the side A；The side B is similarly in the side A, institute
It states the side B and chooses the naked key in the side B corresponding to identical with the side's the B private key side's A private key and exported as the consistent key (11b) in the side B, final A
Side consistent key (11a) key (11b) consistent with the side B is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158431.5A CN108989036B (en) | 2018-09-30 | 2018-09-30 | High-speed secret key safety distribution system and method based on chaotic laser time-sharing quantization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158431.5A CN108989036B (en) | 2018-09-30 | 2018-09-30 | High-speed secret key safety distribution system and method based on chaotic laser time-sharing quantization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108989036A true CN108989036A (en) | 2018-12-11 |
| CN108989036B CN108989036B (en) | 2020-12-25 |
Family
ID=64544299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811158431.5A Active CN108989036B (en) | 2018-09-30 | 2018-09-30 | High-speed secret key safety distribution system and method based on chaotic laser time-sharing quantization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108989036B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743114A (en) * | 2019-01-11 | 2019-05-10 | 太原理工大学 | A kind of two-way multichannel chaotic laser light communication system and communication means |
| CN111147234A (en) * | 2019-12-06 | 2020-05-12 | 太原理工大学 | High-speed physical key distribution system and method based on multi-mode laser chaotic synchronization |
| CN112291008A (en) * | 2020-11-04 | 2021-01-29 | 山西财经大学 | Safe and high-speed key distribution system and method based on optical time domain differentiation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262585A (en) * | 2015-09-22 | 2016-01-20 | 太原理工大学 | Secure and high-speed key distribution system and method |
| CN105763313A (en) * | 2016-04-13 | 2016-07-13 | 电子科技大学 | Chaotic signal dynamic synchronization-based key distribution method and system |
-
2018
- 2018-09-30 CN CN201811158431.5A patent/CN108989036B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262585A (en) * | 2015-09-22 | 2016-01-20 | 太原理工大学 | Secure and high-speed key distribution system and method |
| CN105763313A (en) * | 2016-04-13 | 2016-07-13 | 电子科技大学 | Chaotic signal dynamic synchronization-based key distribution method and system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743114A (en) * | 2019-01-11 | 2019-05-10 | 太原理工大学 | A kind of two-way multichannel chaotic laser light communication system and communication means |
| CN111147234A (en) * | 2019-12-06 | 2020-05-12 | 太原理工大学 | High-speed physical key distribution system and method based on multi-mode laser chaotic synchronization |
| CN111147234B (en) * | 2019-12-06 | 2022-05-13 | 太原理工大学 | High-speed physical key distribution system and method based on multi-mode laser chaotic synchronization |
| CN112291008A (en) * | 2020-11-04 | 2021-01-29 | 山西财经大学 | Safe and high-speed key distribution system and method based on optical time domain differentiation |
| CN112291008B (en) * | 2020-11-04 | 2022-08-05 | 山西财经大学 | Safe and high-speed key distribution system and method based on optical time domain differentiation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108989036B (en) | 2020-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7202406B2 (en) | Permanently secure communication with short-term secure encrypted quantum communication | |
| US7181011B2 (en) | Key bank systems and methods for QKD | |
| CN108989036A (en) | High speed key secure distribution system and method based on chaotic laser light timesharing quantization | |
| CN111464284B (en) | Three-dimensional optical probability shaping encryption method based on deep chaotic system | |
| US8867742B2 (en) | Optical transmission device and reception device for Yuen encryption, optical transmission method and reception method for Yuen encryption, and encrypted communication system | |
| CN108880780A (en) | Key secure distribution system and method based on Chaotic Synchronous common signal channel feature | |
| CN110601828B (en) | High-speed key secure distribution system and method based on multi-state superposition keying synchronization | |
| CN112019321B (en) | Five-dimensional optical probability shaping encryption method based on high-dimensional chaotic system | |
| CN110635902B (en) | Chaotic key distribution system and method based on dispersion keying synchronization | |
| US9698907B2 (en) | Handshake synchronization by adjusting status of status machine of receiving end to a state indicated by status reset signal | |
| CN110912699B (en) | Optical transmission method based on floating probability forming | |
| CN110611572A (en) | Asymmetric password terminal based on quantum random number, communication system and method | |
| CN110601829B (en) | High-speed chaotic key secure distribution system and method | |
| CN111600661B (en) | Three-dimensional encryption OFDM optical system based on real-time updated chaotic key distribution | |
| Zhang et al. | Physical layer security based on chaotic spatial symbol transforming in fiber-optic systems | |
| CN113810187B (en) | High-speed quantum key distribution system and method | |
| Zhong et al. | Secure SDM–OFDM signal transmission based on memristive neural network | |
| Mazzone et al. | Photonics based perfect secrecy cryptography: Toward fully classical implementations | |
| Djordjevic et al. | Spatial modes-based physical-layer security | |
| Long et al. | Practical quantum secure direct communication | |
| Zhao et al. | Gbits/s physical-layer stream ciphers based on chaotic light | |
| CN107659362A (en) | A kind of full light steganography method based on ASE noises and Wavelength-encoding phase-modulation | |
| Wang et al. | Data Center Secure Communication via DNA Hyperchaotic Encryption | |
| CN115801246A (en) | Quantum digital signature method and network based on silicon-based chip | |
| CN116866004A (en) | Multi-intelligent system text encryption and decryption method based on binary synchronization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |