CN109889335A - Based on the random novel high safety optical link secret communication method for shunting encrypted transmission - Google Patents
Based on the random novel high safety optical link secret communication method for shunting encrypted transmission Download PDFInfo
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Abstract
The invention discloses a kind of based on the random novel high safety optical link secret communication method for shunting encrypted transmission, optical link communication security device includes 1 motor synchronizing sequential encryption module, 1 motor synchronizing sequence deciphering module, 2 outer synchronizing sequence encrypting modules, 2 outer synchronizing sequence deciphering modules, 1 quantum true random bit stream generator module, 1 randomization shunts sending module, 1 stochastic flow is combined receiving module, it is followed successively by between the motor synchronizing sequential encryption module and motor synchronizing sequence deciphering module and sending module is shunted by randomization, outer synchronizing sequence encrypting module, SDH fibre optic transmission equipment and outer synchronizing sequence deciphering module, stochastic flow is combined the two-way of receiving module composition.There is the method that the present invention describes confrontation opponent to implement to decode the ability of analytical attack with the powerful calculation power of the high-performance computer including quantum calculation, and the secret communication of high safety can be realized on seabed and the global light transport chain road of deployed on land.
Description
Technical field
The present invention relates to a kind of based on the random novel high safety optical link secret communication method for shunting encrypted transmission.
Background technique
Currently, developed country all competitively research and develop High Performance Computing, especially quantum calculation, neural computing,
The novel computing technique of the powerfuls such as cloud computing makes rapid progress, with cryptanalysis cryptanalytic technique constantly making a breakthrough property into
Exhibition, will form huge security threat to traditional link secret communication transmission mode.
In existing wide area secure communication network, remote link connection is mainly realized with optical fiber transmission mode, and optical fiber passes
Transmission link to optical signal eavesdrop and it is insensitive, opponent be easy to implement midway eavesdrop, contain in optical link transmission code stream to obtain
The complete cipher-text information having, and then advanced novel high-performance computing technique is taken to implement to decode analysis and recover the bright of communication
Literary data flow.
Summary of the invention
In order to overcome the disadvantages mentioned above of the prior art, the present invention is for optical link eavesdropping means and fast-developing high-performance
Computing technique proposes that joint uses the truly random stream encryption of quantum and sequential encryption to the huge security threat of optical transport secret communication
Two kinds of encipherment protection mechanism realize a kind of novel high safety optical link secret communication method jointly.
In novel high safety optical link secret communication method proposed by the present invention, covered first with motor synchronizing sequential encryption algorithm
The frame format feature of lid link transmission clear data stream, then randomization point is carried out to motor synchronizing encryption stream with quantum random bit stream
Stream realizes the transmission encipherment protection of " one-time pad ".Then synchronizing sequence Encryption Algorithm is respectively to the randomization code of branch other than
Stream implements outer synchronizing sequence encryption, forms the independent outer synchronizing sequence encryption stream of two-way, is transmitted respectively by two optical links.In light
Link receiving end passes through adaptive bit after the outer synchronizing sequence encryption of two-way separated transmission flows through outer synchronizing sequence decryption
Stream displacement alignment combining control, combining code stream are decrypted through motor synchronizing sequence, and recover the transmission of link opposite end has isl frame
The clear data stream of format.
In novel high safety optical link secret communication method proposed by the present invention, the outer synchronizing sequence encryption of transmitting terminal is defeated
Enter the truly randomization shunting for link digital stream, what this treatment mechanism made outer synchronous stream cipher algorithm outputs and inputs code
Stream all has truly random feature, and encrypted output streams never repeat, and completely eliminating may be close in link data code stream
Any feature of code analysis and utilization, is difficult the cryptanalysis deciphering method based on bright-ciphertext corresponding relationship of current mainstream
It proves effective, forces opponent that must carry out Conjoint Analysis decoding in entire key space to two-way sequential encryption stream, implement to decode analysis
Required calculation amount and memory space all calculation amount and memory spaces considerably beyond needed for cracking existing stream cipher, thus
Optical link is taken to monitor and implement with the powerful calculation power of high-performance computer the ability of decoding analytical attack with confrontation opponent.
Two kinds of safety protecting mechanisms mutually enhance mutual safety, and sequential encryption mechanism ensures that " one-time pad " realizes communications protection
Safe completeness, " one-time pad " security mechanism for being randomized shunting greatly improves the difficulty that opponent cracks sequential encryption again
Degree.Therefore, technical method provided by the invention is taken, the secret communication transmission of high safety can be realized on optical transmission chain.
The technical solution adopted by the present invention to solve the technical problems is: a kind of to shunt the novel of encrypted transmission based on random
High safety optical link secret communication method, optical link communication security device include 1 motor synchronizing sequential encryption module, 1 quantum
True random bit stream generator module, 1 randomization shunt sending module, 2 outer synchronizing sequence encrypting modules, 2 synchronizations outside
Sequence deciphering module and 1 stochastic flow are combined receiving module, 1 motor synchronizing sequence deciphering module.The motor synchronizing sequential encryption
It is followed successively by between module and motor synchronizing sequence deciphering module and sending module, outer synchronizing sequence encrypting module, SDH is shunted by randomization
The two-way of fibre optic transmission equipment and outer synchronizing sequence deciphering module, stochastic flow combining receiving module composition.
Compared with prior art, the positive effect of the present invention is:
The optical link secret communication method of this novel high safety proposed by the present invention takes the randomization of link code stream
Shunt the communications protection mechanism with the transmission of stream cipher double-encryption, " one-time pad " the security mechanism pole of link code stream randomization
The earth improves the difficulty that opponent cracks sequential encryption, and the safety that sequential encryption mechanism also ensures that " one-time pad " is realized is complete
Property, both safety protecting mechanisms mutually enhance mutual safety, form the encryption " deadlock " for being extremely hard to crack, force
The Conjoint Analysis that opponent must carry out full key space to two-way sequential encryption stream is decoded, needed for calculating time and storage it is empty
Between cost be far longer than existing method.Therefore, technical method provided by the invention is taken, it includes amount that there is confrontation opponent, which to use,
The powerful calculation power for the high-performance computer that son counts is implemented to decode the ability of analytical attack, can be in seabed and land top
Realize the secret communication of high safety in the global light transport chain road of administration.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is novel high safety optical link secret communication method configuration diagram；
Fig. 2 is that link stochastic flow is combined record principle figure.
Specific embodiment
(1) Technical Architecture of novel high safety optical link secret communication method
Novel high safety optical link security transmission method proposed by the present invention, core concept is predominantly to link transmission
(by motor synchronizing sequential encryption) data flow implements truly randomization (one-time pad) and shunts to transmit, and by this truly random bit
Stream encryption is organically combined together with traditional stream cipher encryption.To export quantum constant, identical with link rate
True random bit stream carries out randomization shunting (branch) (by motor synchronizing sequential encryption) link data code stream, this random
Change shunting mechanism mask all format characters for the data flow transmitted on link, simultaneously because quantum random bit stream it is true with
Machine characteristic, it is thus achieved that the truly random stream encryption of one-time pad；Then with sequential encryption means to the truly random of one-time pad
Code stream protection with high safety.The stochastic flow of one-time pad is after the encryption of outer synchronizing sequence, the sequential encryption bit stream of output
It is independently carried out on two different optical links (different wave length of same root optical fiber or the different fibre cores of same root optical cable) respectively
Transmission.
In order to solve the transmission delay difference problem that two-way stochastic flow reaches receiving end, receiving end takes adaptive bit to move
Position alignment control, realizes the correct combining of two-way one-time pad random bit stream, recovers " plain code " data of link source end transmission
Stream.
Randomization shunting mechanism had not only realized the encipherment protection of one-time pad, but also made opponent can not be by single light chain
True " plain code " data flow for calculating and obtaining and transmitting on link is decoded in the analysis of the sequential encryption stream on road, forces opponent must be to two
Road sequential encryption stream combines the exhaustive computations carried out for whole keys, and analysis, which is decoded, calculates the calculating time needed and storage
Space is all considerably beyond the expense for cracking single channel stream cipher.Thus, novel high safety optical link secrecy proposed by the present invention
Transmission method, the decoding with the powerful high-performance computer for calculating power that can be very potent against including quantum calculation
Analytical attack.
The present invention is not related to the specific implementation of the distribution of the key agreement between the communication security device of optical link both ends, does not relate to yet
And the specific implementation of the truly random flow-generator of high speed quantum and the sequence enciphering/deciphering module taken.
1, the Technical Architecture of novel high safety optical link transmission security communication means is realized
In novel high safety optical link transmission security communication means proposed by the present invention, optical link communication security device
Framework is as shown in Figure 1.Optical link communication security device is mainly by 2 motor synchronizing sequence enciphering/deciphering modules, 4 outer synchronizing sequences
Enciphering/deciphering module, 1 quantum true random bit stream generator module, 1 randomization shunt sending module, 1 stochastic flow combining
Receiving module totally 9 module compositions.
In optical link sender, optical link communication security device receives the plaintext encapsulated on link-local with HDLC frame format
Data frame code stream (if link-local is ethernet link, needs to be converted to HDLC frame), first passes through motor synchronizing sequential encryption
Then the processing of hidden link frame format is shunted sending module by randomization and is generated based on quantum true random bit stream generator module
True random bit stream carry out randomization shunting, and realize the encryption of one-time pad simultaneously, form two-way one-time pad
Accidental enciphering stream is passed through respectively using outer synchronizing sequence encrypting module based on different key encryption formation sequence encryption stream
SDH optical transmission device transmits on two optical links.
In optical link recipient, optical link communication security device receives the two-way sequential encryption stream that SDH is received, first by every
Outer synchronizing sequence deciphering module all the way implements decryption to the sequential encryption stream received respectively, decrypts the quantum of one-time pad
Accidental enciphering stream is realizing the reception displacement of two-way quantum cryptography bit stream just then via stochastic flow combining receiving module processing
The combining being really aligned restores outgoing link and uploads defeated " plain code " data flow for concealing frame format, using motor synchronizing sequence solution
The close clear data stream recovered with frame format (if link-local is ethernet link, is needed to turn by local data-link
It is changed to ethernet frame encapsulation format) it is sent to local switch.
2, the high safety preventing mechanism that " one-time pad " is realized in transmission is shunted based on randomization
Novel high safety optical link secret communication method proposed by the present invention, core be based on link data stream it is true with
Machineization shunts the thought of transmission, realizes under the common auxiliary of motor synchronizing sequential encryption and outer synchronizing sequence encryption mechanism " primary
One is close " communication security." plaintext " data code flow that randomization shunting mechanism sends link, based on generating in real time, constant
The quantum true random bit stream of rate carries out shunting operation by bit, it is " one time one identical with link-local rate to obtain two-way
It is close " accidental enciphering stream.It is randomized the encryption mechanism shunted, " destruction " integrality of link data code stream eliminates link
Any feature that may be utilized by cryptanalysis in data code flow.
In transmitting terminal, the randomization based on the truly random stream of quantum shunts arithmetic operation and can be expressed as:
1st road shunts operation:
2nd road shunts operation:
In receiving end, the combining arithmetic operation of the randomization code stream of " one-time pad " can be expressed as:
Wherein, miIndicate plaintext the code stream bit, m of link transmissioni' indicate the received plaintext code stream bit of link, withTable
Show the 1st tunnel truly randomization data flow (the input data bit stream of synchronizing sequence encrypting module outside the 1st tunnel), withIndicate the 2nd tunnel
Truly randomization data flow (the input data bit stream of synchronizing sequence encrypting module outside the 2nd tunnel), with kiIndicate the truly random stream of quantum
Bit, withThe inversion operation for indicating the truly random stream bit of quantum, indicates bit with operation with " ∧ " symbol, with " ∨ " symbol table
Show bit OR operation.
3, it receives stochastic flow and is adaptively directed at the combining coordinated control mechanism synchronous with sequential encryption
Due to linkage length error easy to form in engineering construction, link signal transmission delay variation will cause.In addition,
Optical signal may also cause propagation delay time difference on different optical fiber, different wave length.This is possible to that two-way is caused to flow at random
Up to combining module when there may be bit dislocation.Stochastic flow be adaptively aligned combining mechanism for solve receive bit be combined module
The problem of misalignment at place.
In engineering construction, if the geographical route of two-way optical fiber layout path is different, need apart from relatively short
Delay optical cable is added in optical link receiving end, by two-way optical fiber total length difference less than 10 meters within, with about 105The optical path of km passes
Defeated rate considers that 10 meters of fiber lengths difference can generate the transmission delay of 100ns.For with the data-link of 100,000,000 speed rates
Road, the dislocation of bit caused by 100ns do not exceed 1bit.For with the data link of gigabit speed rates, bit caused by 100ns
Dislocation does not exceed 10bit.
In stochastic flow combining receiving module, one reception with 16bit is set for per received stochastic flow all the way
Shift in alignment register, two-way shift register form one 16 × 16 shift matrix.Receiving shift control logic circuit
Control under, every 1ms executes a kind of selection combination of the two-way combining input position bit, until the output of motor synchronizing deciphering module
Until at least occurring 2 isl frame spacing identifications in link code stream.When shift register has carried out the whole in shift matrix
The displacement of bit position grouping traverses, and isl frame spacing identification does not all occur in the output code flow of motor synchronizing deciphering module, then
Repeat to shift the operation that bit is aligned.As Fig. 2 gives the realization principle of stochastic flow combining receiving module.
When stochastic flow combining receiving module have been carried out 4 reception displacement combination traverse, motor synchronizing deciphering module it is defeated
Isl frame spacing identification is all not received by code stream out, then may be grasped for the outer synchronizing sequence encryption at optical link both ends with decryption
Do not reach synchronous or produce step-out, then outer synchronizing sequence encrypting module is notified to force to send the synchronous sequence codes of insertion,
Synchronizing sequence deciphering module also indicates that its outer synchronizing sequence encrypting module is forced to send the synchronizing sequence of insertion outside opposite end after receiving
Code.
4, the safe enhancing mechanism based on truly randomization encryption and sequential encryption double-encryption
Implement the encipherment protection of one-time pad to isl frame code stream by true random bit stream, so that the encryption of outer synchronizing sequence
Input is the digital stream of completely random, and randomization mechanism thoroughly hides and " destruction " all characteristic informations of link plain code stream.
In order to ensure the completeness of this one-time pad encryption mechanism, with sequential encryption mechanism be shunt the two-way one-time pad generated with
The safeguard protection of machine stream offer strength.
If opponent wants to decode stream cipher stream wherein all the way, exhaustive operation must be executed for entire key space,
And even if opponent completes exhaustive operation, since the content of decrypted result can not be interpreted, thus key space can not be also known
Which interior key is correct.
When key length is 256 bit, if opponent implements to decode using high-performance computer, two must be directed to
Optical link executes all keys in key space, is performed simultaneously exhaustive operation and saves the operation result of each key, so
It is combined operation trial again afterwards.It is when key length is 256 bit, then every to require carry out 2 all the way256≈1.15792×
1077Secondary sequence decrypts operation, and need to save to two-way sequential encryption stream 2 × 1.15792 × 1077Kind decrypted result.
Even if opponent completes synchronizing sequence encryption outside two-way with exhaustive method and is combined operation with stochastic flow, due to motor synchronizing sequential encryption
Protection mechanism, plaintext code stream can not be decoded out.
Therefore, this double-encryption mechanism based on the encryption of quantum truly randomization with the encryption of outer synchronizing sequence, forces opponent
Even if being aware of the sequential encryption algorithm of privacy device use, it is also desirable to it traverses entire key space and carries out exhaustive operation, and
It needs first to save the decrypted result to synchronizing sequence encryption stream outside two-way, then executes the joint decryption of two-way stochastic flow, increase
Add opponent to analyze the difficulty decoded, significantly enhances the safety of optical link secret communication.
5, the safe enhancing mechanism of randomization combining is protected based on motor synchronizing sequential encryption
Before carrying out truly randomization and shunting, motor synchronizing sequence is implemented to the plaintext frame data stream that link is sent in advance and is added
The frame format characteristic information in data flow that is close, being sent with hidden link, so that opponent can not be according to synchronizing sequence solution outside two-way
Close combining code stream analyses whether that the exhaustion that will correctly force opponent traverse entire key space is transported to judge that it is decoded
It calculates, and opponent can not obtain correct clear data stream completing exhaustive operation.Therefore, motor synchronizing sequential encryption machine
System protects the safety of randomization combining operation.
(2) workflow
1, the transmission encrypted work process of optical link communication security device
When optical link communication security device powers on, following transmission encryption processing step is taken:
Step 1: motor synchronizing sequential encryption module is implemented link plaintext frame data code stream based on the key k3 negotiated in advance
Sequential encryption hides the frame format feature for the clear data code stream that link-local is sent, and forms motor synchronizing sequential encryption stream.
Step 2: randomization shunt sending module be based on quantum true random bit stream to motor synchronizing sequential encryption stream implement by
The randomization shunting of bit is handled, and forms two-way randomized transmission code stream.1st tunnel randomization code stream is directly based upon truly random bit
Stream is generated with logic "and" operation, the 2nd tunnel be randomized code stream by true random bit stream first pass through after logic " non-" negates again with
AND operation generates.If the truly random bit value of quantum is " 1 ", corresponding link data bit is divided to the 1st article of optical link, the
The corresponding bit value of 2 optical links is " 0 "；If the truly random bit value of quantum is " 0 ", corresponding link data bit is divided to
2nd article of optical link, the corresponding bit value of the 1st article of optical link are " 0 ".
Step 3: negotiating preset different key pairs with key distribution protocol respectively per synchronizing sequence encrypting module outer all the way
It shunts the randomized transmission code stream generated and executes outer synchronizing sequence cryptographic calculation.
Step 4: passing through per the sequential encryption stream of outer synchronizing sequence encrypting module output all the way via optical transmission device SDH
Wide area optical fiber link is sent to opposite end.
2, the receiving and deciphering workflow of optical link communication security device
When optical link communication security device powers on, following receiving and deciphering processing step is taken:
Step 1: received optical link sequential encryption stream is transmitted directly to corresponding outer synchronizing sequence deciphering module by SDH,
Respectively by outer synchronizing sequence deciphering module to negotiate the randomization branch code that preset corresponding secret key decrypts the transmission of link opposite end
Stream gives stochastic flow combining receiving module processing.
Step 2: stochastic flow combining receiving module is combined in the stochastic flow and is received using adaptive combining reception mechanism
In module, for per received one reception shift in alignment register with 16bit of stochastic flow setting all the way, two-way reception pair
Quasi- shift register forms one 16 × 16 shift matrix.Stochastic flow is combined receiving module and is exported according to motor synchronizing deciphering module
Reception code stream in whether there is isl frame spacing identification, while control two-way combining input bit selector, to received two-way
Randomization code stream bit is combined input selection control.In the case where receiving combining and inputting the control of selection, every 1ms executes two-way and closes
Road inputs a kind of selection combination of the position bit, i.e., stops 1ms on the position grouping of each displacement bit, it is ensured that in displacement pair
In the state of standard, the output code flow of motor synchronizing deciphering module is at least able to detect that two link interframe in the time period of stay
Every mark.Entire shift matrix space has been traversed when two-way receives displacement, has not all been had in motor synchronizing deciphering module output code flow
Isl frame spacing identification is occurred, then repeats the operation for shifting bit alignment.When the output code flow in motor synchronizing deciphering module
In when at least detecting two isl frame spacing identifications, show that the clear data communication at optical link both ends has reached correct link
Frame synchronization state then stops the shifting function that the input position bit is combined to stochastic flow, keeps the combining input of two-way stochastic flow
The position of bit, until can't detect isl frame spacing identification in motor synchronizing deciphering module output code flow.
Step 3: have passed through 4 reception shift matrix traversals when combining receives displacement search operation, mould is decrypted in motor synchronizing
Isl frame spacing identification is not all detected in the output code flow of block, then the communication security device at optical link both ends may have occurred
Outer synchronous stream cipher decrypts step-out, and the outer synchronizing sequence encrypting module of the two-way of local terminal is notified to send out in a manner of being forcibly inserted into immediately
Send cryptosync sequence；After the outer synchronizing sequence deciphering module of opposite end detects cryptosync sequence, immediately by same outside its two-way
Step sequence encrypting module also sends the cryptosync sequence of response in a manner of being forcibly inserted into.It is closed by executing such stochastic flow
The synchronous Cooperation controlling of the outer synchronous stream cipher in road-, makes the communication security device at optical link both ends be rapidly achieved sequence enciphering/deciphering
Synchronous regime.
Step 4: the stochastic flow that motor synchronizing sequence deciphering module adaptively collaborates module output to stochastic flow implements motor synchronizing
Decryption recovers the plaintext frame format code stream of link transmission, obtains and receives data flow.
Claims (6)
1. a kind of based on the random novel high safety optical link secret communication method for shunting encrypted transmission, it is characterised in that: light chain
Road communication security device includes 1 motor synchronizing sequential encryption module, 1 motor synchronizing sequence deciphering module, the truly random ratio of 1 quantum
Special streamer module, 1 randomization shunt sending module, 2 outer synchronizing sequence encrypting modules, 2 outer synchronizing sequence decryption
Module and 1 stochastic flow are combined receiving module, between the motor synchronizing sequential encryption module and motor synchronizing sequence deciphering module according to
It is secondary to decrypt mould to shunt sending module, outer synchronizing sequence encrypting module, SDH fibre optic transmission equipment and outer synchronizing sequence by randomization
The two-way of block, stochastic flow combining receiving module composition.
2. the novel high safety optical link secret communication method according to claim 1 based on random shunting encrypted transmission,
It is characterized by: the encrypted work process of optical link transmitting terminal are as follows:
The first step, motor synchronizing sequential encryption module are implemented sequence based on the key pair link clear data frame code stream negotiated in advance and are added
Close, the frame format feature for the clear data code stream that hiding link-local is sent forms self-synchronous stream cipher stream；
Second step, randomization shunt sending module and are based on quantum true random bit stream to the implementation of self-synchronous stream cipher stream by bit
Randomization shunting processing, formed two-way randomized transmission code stream；
Third step negotiates preset different key pairs shunting respectively per synchronizing sequence encrypting module outer all the way with key distribution protocol
The randomized transmission bit stream of generation executes outer synchronizing sequence cryptographic calculation；
The sequential encryption stream that 4th step, every synchronizing sequence encrypting module outer all the way export, passes through wide via SDH fibre optic transmission equipment
Domain optical fiber link is sent to optical link receiving end SDH fibre optic transmission equipment.
3. the novel high safety optical link secret communication method according to claim 2 based on random shunting encrypted transmission,
It is characterized by: in the two-way randomized transmission code stream, wherein all the way randomization code stream be directly based upon true random bit stream with
Logic "and" operation generates, and another way randomization code stream is first passed through after logic " non-" negates by true random bit stream again with logic
AND operation generates.
4. the novel high safety optical link secret communication method according to claim 2 based on random shunting encrypted transmission,
It is characterized by: the decryption work process of optical link receiving end are as follows:
The first step, SDH will be transmitted directly to corresponding outer synchronizing sequence deciphering module by received sequential encryption stream from optical link,
Preset corresponding secret key is negotiated with key distribution protocol by outer synchronizing sequence deciphering module respectively and decrypts the transmission of link opposite end
It is randomized branch code stream, gives stochastic flow combining receiving module processing；
Second step, stochastic flow combining receiving module take adaptive bit displacement alignment control, realize two-way one-time pad random code
The correct combining of stream, recovers self-synchronous stream cipher stream, gives the processing of motor synchronizing sequence deciphering module；
Third step, motor synchronizing sequence deciphering module adaptively collaborate module output to stochastic flow based on the key negotiated in advance
Self-synchronous stream cipher stream implements the decryption of motor synchronizing sequence, recovers the plaintext frame format code stream of link transmission, obtains and receives number
According to stream.
5. the novel high safety optical link secret communication method according to claim 1 based on random shunting encrypted transmission,
It is characterized by: the stochastic flow combining receiving module is using adaptive combining reception mechanism, it is defeated according to motor synchronizing deciphering module
Whether there is isl frame spacing identification in reception code stream out, while controlling two-way combining input bit selector, to received two
Road randomization code stream bit is combined input selection control: 1ms is stopped on the position grouping of each displacement bit selector,
Ensure at least to be able to detect that two isl frame spacing identifications in the time period of stay in the state of shifting alignment；Work as two-way
It receives displacement and has traversed entire shift matrix space, isl frame all do not occur in the output code flow of motor synchronizing deciphering module
Spacing identification then repeats the operation for shifting bit alignment；When at least being detected in the output code flow in motor synchronizing deciphering module
When two isl frame spacing identifications, then stops the shifting function for being combined the input position bit to stochastic flow, keep two-way stochastic flow
The position of combining input bit is motionless, until can't detect isl frame spacing identification.
6. the novel high safety optical link secret communication method according to claim 5 based on random shunting encrypted transmission,
It is characterized by: the stochastic flow combining receiving module uses the stream cipher synchronization mechanism of Cooperation controlling, moved when combining receives
Position search operation have passed through 4 reception shift matrix traversals, all not detect in its motor synchronizing deciphering module output code flow
When isl frame spacing identification, the outer synchronizing sequence encrypting module of the two-way of local terminal is notified to send password in a manner of being forcibly inserted into immediately
Synchronizing sequence；After the outer synchronizing sequence deciphering module of opposite end detects cryptosync sequence, immediately by synchronizing sequence outside its two-way
Encrypting module also sends the cryptosync sequence of response in a manner of being forcibly inserted into.
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| CN110798311A (en) * | 2019-10-15 | 2020-02-14 | 中国电子科技集团公司第三十研究所 | IP encryption method for realizing one-time pad based on quantum true random number matrix |
| CN111555817A (en) * | 2020-05-09 | 2020-08-18 | 国网江苏省电力有限公司无锡供电分公司 | Differential modulation safety optical communication method and device based on coherent optical system |
| CN114611304A (en) * | 2022-03-16 | 2022-06-10 | 北京地平线机器人技术研发有限公司 | Excitation signal generation method and device for signal integrity simulation |
| CN117857041A (en) * | 2024-03-08 | 2024-04-09 | 南京信息工程大学 | Digital signal processing method based on secret communication |
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