CN102932137A - Key distribution method based on all-optical encryption and decryption of signals in optical fiber wavelength division multiplexing system - Google Patents
Key distribution method based on all-optical encryption and decryption of signals in optical fiber wavelength division multiplexing system Download PDFInfo
- Publication number
- CN102932137A CN102932137A CN2012103776693A CN201210377669A CN102932137A CN 102932137 A CN102932137 A CN 102932137A CN 2012103776693 A CN2012103776693 A CN 2012103776693A CN 201210377669 A CN201210377669 A CN 201210377669A CN 102932137 A CN102932137 A CN 102932137A
- Authority
- CN
- China
- Prior art keywords
- light
- key
- signal
- pulse train
- ciphertext
- 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
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000013307 optical fiber Substances 0.000 title claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006303 photolysis reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The invention discloses a key distribution method based on all-optical encryption and decryption of signals in an optical fiber wavelength division multiplexing system, which comprises two steps of 1 optical signal encryption transmission and 2 optical signal decryption and reception.
Description
Technical field
The invention belongs to technical field of optical fiber communication, relate to a kind of method for distributing key, especially a kind of method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system.
Background technology
Along with state's infrared optical fiber Eavesdropping is full-fledged, transmission information faces huge stolen risk in the optical fiber.The light signal that transmits in the optical fiber is encrypted to become solves the effective ways that optical fiber telecommunications system is eavesdropped the stolen problem of rear information, at present, can be applied to optical fiber telecommunications system and realize that real-time encrypted scheme is based on the full light encipherment scheme of stream cipher system, but this scheme is a kind of symmetric key system scheme, be that encryption key is identical with decruption key, if encrypting light signal is eavesdropped in the process of transmission, as long as the listener-in can obtain encryption key, just can recover easily original plaintext message so.Therefore, guarantee that key is not ravesdropping the key point that becomes whole encryption and transmission link in the process of transmission.
In the optical fibre wavelength-division multiplex system, conventional encryption method is all to use a light key to be encrypted to the light signal of each wavelength, this will be so that the light number of keys be identical with the wavelength of optical signal number, the more light key of number not only can be at the number of encrypting end increase key generating unit, so that equipment complexity increases; More importantly be to increase the possibility that its transmission course is eavesdropped, therefore how become the key that overcomes based on the full light encipherment scheme of stream cipher system security bottleneck with the maximum light signal of minimum light secret key encryption.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system is provided, the method is based on optical fibre wavelength-division multiplex system characteristics, in conjunction with stream cipher system principle, encryption key when utilizing each road light signal to encrypt as next road light signal, can solve the more key generating unit complexity of bringing of encipherment scheme number of keys in the prior art, the high problem of safety guarantee difficulty and complexity in the cipher key transmitting process.
Concrete technical solution of the present invention is as follows:
This method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system is: encrypting end, encryption key when utilizing each road light signal to encrypt as next road light signal is so that only need a key generating unit to produce a light key K in ciphering process
0Finish the encryption to multipath light signal; In the transmission course of light ciphertext and light key, the light ciphertext after each is encrypted is transmitted a road unique light key K through common signal channel
0Transmit to guarantee not to be ravesdropping in the transmission course through safe lane;
In decrypting end, at first utilize the light key K that receives
0Finish the deciphering to first via light ciphertext 0, produce light signal 0, so with the decruption key of light signal 0 as deciphering light ciphertext 1,1 deciphering is finished and produced light signal 1 to the light ciphertext, with the decruption key of light signal 1 as deciphering light ciphertext 2, finish by that analogy the deciphering to the multi-path light ciphertext.
The above-mentioned light key pulse train that produces at the encryption end is to utilize key stream generator to produce the key stream sequence of low rate, and in passing through time division multiplexing, electrooptic modulation becomes high rate optical key pulse train; Perhaps low rate key stream sequence is passed through electrooptic modulation, and low rate light key sequence is carried out pulse compression, the time-delay coupling produces high rate optical key pulse train.
Above-mentioned in encryption end generation superelevation speed light key K
0Wherein a kind of scheme be:
(1.1) utilize the key stream generator cycle that produces to be f for M speed
0Pseudo random sequence;
(1.2) N the speed that above-mentioned steps is produced is f
0Pseudo random sequence to produce speed by time division multiplexing be N * f
0The two-forty pseudo random sequence;
(1.3) this two-forty pseudo random sequence is inputted electrooptic modulator as control signal, make the intensity of its modulation continuous light signal, the light signal of electrooptic modulator output is ultra high-speed optical key pulse train.
Above-mentioned in encryption end generation superelevation speed light key K
0Another kind of scheme be:
(1.1) utilize the key stream generator cycle that produces to be f for M speed
0Pseudo random sequence;
(1.2) this pseudo random sequence is inputted electrooptic modulator as control signal, make the intensity of its modulation continuous light signal, the speed of electrooptic modulator output is f
0The pulse of light key;
(1.3) carry out pulse compression with N than low rate key pulse train input dispersion shift light (DCF) respectively;
(1.4) with this N through the coupling of delaying time of the low rate light key pulse train of pulse compression, generation speed is N * f
0Light key pulse train.
Above-mentionedly before carrying out full light XOR with decrypting end, end needs optical signal pulses sequence and light key pulse train are carried out Synchronization Control encrypting, the method of Synchronization Control is, place optical delay line in the optical fiber link of one road light signal therein, by adjusting light time-delay length so that two signals are synchronous.
Above-mentioned by utilizing full light XOR gate, optical signal pulses sequence and light key pulse train are carried out by turn XOR encrypting end, the XOR result is the encrypted result to the optical signal pulses sequence; In decrypting end light key pulse train and light ciphertext pulse train are carried out by turn XOR, the XOR result is the decrypted result to light ciphertext pulse train.
The above-mentioned end in encryption inputted full light XOR gate with light key pulse train and optical signal pulses sequence, and XOR output light is the encryption light of first via light signal; Utilize first via optical signal pulses sequence to input full light XOR gate as light key and the second tunnel optical signal pulses sequence, XOR output light is the encryption light of the second road light signal; By that analogy, utilize upper one tunnel optical signal pulses sequence number as the encryption key of next road optical signal pulses sequence, two signals are inputted full light XOR gate simultaneously, finish the encryption to next road optical signal pulses sequence.
Above-mentionedly simultaneously input full light XOR gate by the light key pulse train that safe lane receives as decruption key and first via light ciphertext pulse train in the decrypting end utilization, recover first via primary light signal by two signals being carried out the XOR computing; Recover the primary light signal as the decruption key of next road light ciphertext pulse train, two signals have been inputted full light XOR gate, recovered the second tunnel primary light signal by two signals being carried out the XOR computing; By that analogy, utilize primary light signal that upper one road decryption restoration goes out as the decruption key of next road light ciphertext, two signals are inputted full light XOR gate, recover next road primary light signal by two signals being carried out the XOR computing.
The present invention has following beneficial effect:
The present invention is based on optical fibre wavelength-division multiplex system characteristics, in conjunction with stream cipher system principle, encryption key when utilizing each road light signal to encrypt as next road light signal is by this method so that only need a key generating unit to produce a light key K in ciphering process
0Can finish the encryption to multipath light signal, therefore greatly reduce the quantity of encrypting end key generating unit.
In the transmission course of smooth ciphertext of the present invention and light key, the light ciphertext after each is encrypted is transmitted through common signal channel, because signal wherein encrypts, so have the stolen ability of very strong anti-information.The light key K
0Transmit to guarantee not to be ravesdropping in the transmission course through safe lane, because only have one road light key, thus greatly reduce the cipher key delivery difficulty, so that key is not ravesdropping in transmission course.
Description of drawings
Fig. 1 is that the present invention encrypts end encryption key distribution principle schematic;
Fig. 2 is the full light encryption principle of the present invention schematic diagram;
Fig. 3 is smooth ciphertext of the present invention and light cipher key transmitting process schematic diagram;
Fig. 4 is decrypting end encryption key distribution principle schematic of the present invention;
Fig. 5 is the close principle schematic of full photodissociation.
Embodiment
Referring to Fig. 1, the method for distributing key that the present invention is based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system is:
1] light signal encrypted transmission
1.1] encrypting end generation light key pulse train K
0, light key pulse train K
0Be used for the first via light signal of multipath light signal is encrypted;
1.2] first via light signal is as the encryption key of the second road light signal, the second road light signal by that analogy, is finished the whole encryptions to multipath light signal as the encryption key of Third Road light signal;
1.3] with light key pulse train K
0Transmit by safe lane, encrypted multipath light signal is transmitted by common signal channel;
Encryption key when it specifically refers to utilize each road light signal to encrypt as next road light signal is so that only need a key generating unit to produce a light key K in ciphering process
0Finish the encryption to multipath light signal; In the transmission course of light ciphertext and light key, the light ciphertext after each is encrypted is transmitted a road unique light key K through common signal channel
0Transmit to guarantee not to be ravesdropping in the transmission course through safe lane.
The light key pulse train that produces at the encryption end is to utilize key stream generator to produce the key stream sequence of low rate, so pass through time division multiplexing, electrooptic modulation becomes high rate optical key pulse train; Perhaps low rate key stream sequence is passed through electrooptic modulation, and low rate light key sequence is carried out pulse compression, the time-delay coupling produces high rate optical key pulse train.
The present invention needs optical signal pulses sequence and light key pulse train are carried out Synchronization Control before the encryption end is carrying out full light XOR with decrypting end, the method of Synchronization Control is, place optical delay line in the optical fiber link of one road light signal therein, by adjusting light time-delay length so that two signals are synchronous.Optical signal pulses sequence and light key pulse train are carried out by turn XOR, and the XOR result is the encrypted result to the optical signal pulses sequence; In decrypting end light key pulse train and light ciphertext pulse train are carried out by turn XOR, the XOR result is the decrypted result to light ciphertext pulse train.
At the encryption end light key pulse train and optical signal pulses sequence are inputted full light XOR gate, XOR output light is the encryption light of first via light signal; Utilize first via optical signal pulses sequence to input full light XOR gate as light key and the second tunnel optical signal pulses sequence, XOR output light is the encryption light of the second road light signal; By that analogy, utilize upper one tunnel optical signal pulses sequence number as the encryption key of next road optical signal pulses sequence, two signals are inputted full light XOR gate simultaneously, finish the encryption to next road optical signal pulses sequence.
2] the light signal deciphering receives
2.1] the decrypting end utilization by receive after the safe lane transmission light key pulse train K
0Finish the deciphering to first via light signal 0, produce light signal 0;
2.2] light signal 0 finishes deciphering to the second road light signal 1 as the decruption key of the second road light signal 1, produces light signal 1; Light signal 1 is finished deciphering to Third Road light signal 2 as the decruption key of Third Road light signal 2, produces light signal 2, finishes by that analogy the deciphering to the multi-path light ciphertext.
It specifically refers at first utilize the light key K that receives
0Finish the deciphering to first via light ciphertext 0, produce light signal 0, so with the decruption key of light signal 0 as deciphering light ciphertext 1,1 deciphering is finished and produced light signal 1 to the light ciphertext, with the decruption key of light signal 1 as deciphering light ciphertext 2, finish by that analogy the deciphering to the multi-path light ciphertext.Be specially:
Simultaneously input full light XOR gate by the light key pulse train that safe lane receives as decruption key and first via light ciphertext pulse train in the decrypting end utilization, recover first via primary light signal by two signals being carried out the XOR computing; Recover the primary light signal as the decruption key of next road light ciphertext pulse train, two signals have been inputted full light XOR gate, recovered the second tunnel primary light signal by two signals being carried out the XOR computing; By that analogy, utilize primary light signal that upper one road decryption restoration goes out as the decruption key of next road light ciphertext, two signals are inputted full light XOR gate, recover next road primary light signal by two signals being carried out the XOR computing.
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
Encrypt end:
(1) produces superelevation speed light key K
0
(1.1) utilize the key stream generator cycle that produces to be f for M speed
0Pseudo random sequence.
(1.2) N speed will utilizing said method to produce is f
0Pseudo random sequence to produce speed by time division multiplexing be N * f
0The two-forty pseudo random sequence.
(1.3) this two-forty pseudo random sequence is inputted electrooptic modulator as control signal, make the intensity of its modulation continuous light signal, the light signal of electrooptic modulator output is ultra high-speed optical key pulse train.
Scheme 2
(1.1) utilize the key stream generator cycle that produces to be f for M speed
0Pseudo random sequence.
(1.2) this pseudo random sequence is inputted electrooptic modulator as control signal, make the intensity of its modulation continuous light signal, the speed of electrooptic modulator output is f
0The pulse of light key
That (1.3) divides does not carry out pulse compression with N than low rate key pulse train input dispersion shift light (DCF)
(1.4) with this N through the coupling of delaying time of the low rate light key pulse train of pulse compression, generation speed is N * f
0Light key pulse train.
(2) utilize the light key K
0Be λ to wavelength
0Light signal 0 be encrypted (as shown in Figure 2)
Cipher mode adopts based on the full light of stream cipher system and encrypts, and light signal and light key pursue bit sequence pulse full XOR.The XOR Output rusults is exactly the light ciphertext of encrypting.
(2.1) light key K
0Identical with the speed of light signal 0, add optical delay line on one road signal therein, delay time length so that the light key K by suitable adjusting
0Enter synchronously full light XOR gate with light signal 0.
(2.2) full light XOR gate can be carried out the XOR computing to two burst pulses, and the light signal of output is the light key K
0XOR light pulse sequence with light signal 0.
(3) utilize 0 pair of wavelength of light signal to be λ
1 Light signal 1 be encrypted
Here, being used for encrypting wavelength is λ
1The light key of the second road light signal be upper one road light signal 0, ciphering process is with step 2.
(4) encrypt more multipath light signal (as shown in Figure 1)
Such as the step 3 process by that analogy, utilize upper one road light signal plaintext as the encryption key of next road light signal.Be encrypted by full light XOR gate and obtain the light ciphertext.
Signals transmission
(1) transmission of light cipher-text information (as shown in Figure 3)
To utilize light wavelength division multiplexing that each wavelength light ciphertext is carried out to light ciphertext i through the light ciphertext 0 that full light is encrypted output multiplexing, the signal after multiplexing enters optical fiber and transmits.
(2) transmission of light key
Shown in figure three, encrypt the light key K that end utilizes
0Need to transmit by safe lane, not to be ravesdropping in the assurance transmission course.
Decrypting end
(1) to the deciphering (as shown in Figure 5) of light ciphertext 0
(1.1) from common signal channel and safe lane, obtain respectively light ciphertext 0 and light key K
0, two light signals are inputted the close unit of full photodissociation
(1.2) add optical delay line on one road signal therein, delay time length so that the light key K by suitable adjusting
0Enter synchronously full light XOR gate with light ciphertext 0.
(1.3) full light XOR gate can be carried out the XOR computing to two burst pulses, and the light signal of output is the light key K
0With the XOR light pulse sequence of light ciphertext 0, finish the deciphering to light ciphertext 0, output optical signal 0.
(2) to the deciphering of light ciphertext 1
(2.1) from common signal channel, obtain light ciphertext 1, and with the light signal 0 that produces in the step 1 as decruption key.
(2.2) add optical delay line on one road signal therein, delay time length so that the light key K by suitable adjusting
0Enter synchronously full light XOR gate with light ciphertext 0.
(2.3) full light XOR gate can be carried out the XOR computing to two burst pulses, and the light signal of output is the XOR light pulse sequence of light signal 0 and light ciphertext 1, finishes the deciphering to light ciphertext 1, output optical signal 1.
(3) to the more deciphering of multichannel ciphertext (as shown in Figure 4)
According to step 2, utilize upper one tunnel light signal that obtains of deciphering as the decruption key of next road light ciphertext, two signals are inputted full light XOR gate, the XOR result of two signals is the decrypted result to the light ciphertext.
Claims (8)
1. the method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system is characterized in that, may further comprise the steps:
1] light signal encrypted transmission
1.1] encrypting end generation light key pulse train K
0, light key pulse train K
0Be used for the first via light signal of multipath light signal is encrypted;
1.2] first via light signal is as the encryption key of the second road light signal, the second road light signal by that analogy, is finished the whole encryptions to multipath light signal as the encryption key of Third Road light signal;
1.3] with light key pulse train K
0Transmit by safe lane, encrypted multipath light signal is transmitted by common signal channel;
2] the light signal deciphering receives
2.1] the decrypting end utilization by receive after the safe lane transmission light key pulse train K
0Finish the deciphering to first via light ciphertext 0, produce light signal 0;
2.2] light ciphertext 0 finishes deciphering to the second road light ciphertext 1 as the decruption key of the second road light ciphertext 1, produces light signal 1; Light ciphertext 1 is finished deciphering to Third Road light ciphertext 2 as the decruption key of Third Road light ciphertext 2, produces light signal 2, finishes by that analogy the deciphering to the multi-path light ciphertext.
2. the method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system according to claim 1 is characterized in that: in the described step 1.1, generate light key pulse train K
0Be to utilize key stream generator to produce the key stream sequence of low rate, in passing through time division multiplexing, electrooptic modulation becomes high rate optical key pulse train; Perhaps low rate key stream sequence is passed through electrooptic modulation, and low rate light key sequence is carried out pulse compression, the time-delay coupling produces high rate optical key pulse train.
3. the method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system according to claim 2 is characterized in that: the light key pulse train that generates in the described step 1.1 is superelevation speed light key K
0, concrete grammar is:
1.1.1] utilize the key stream generator cycle that produces to be f for M speed
0Pseudo random sequence;
1.1.2] N speed that above-mentioned steps is produced is f
0Pseudo random sequence to produce speed by time division multiplexing be N * f
0The two-forty pseudo random sequence;
1.1.3] this two-forty pseudo random sequence is inputted electrooptic modulator as control signal, make the intensity of its modulation continuous light signal, it is N * f that the light signal of electrooptic modulator output is speed
0High-speed light key pulse train.
4. the method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system according to claim 2 is characterized in that, the light key pulse train that generates in the described step 1.1 is superelevation speed light key K
0, concrete grammar is:
1.1.1] utilize the key stream generator cycle that produces to be f for M speed
0Pseudo random sequence;
1.1.2] this pseudo random sequence is inputted electrooptic modulator as control signal, make the intensity of its modulation continuous light signal, the speed of electrooptic modulator output is f
0The pulse of light key;
1.1.3] carry out pulse compression with N than low rate key pulse train input dispersion shift light (DCF) respectively;
1.1.4] with this N through the coupling of delaying time of the low rate light key pulse train of pulse compression, generation speed is N * f
0Light key pulse train.
5. the method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system according to claim 1 is characterized in that: key pulse train K in the described step 1.1
0Being used for first via light signal to multipath light signal is encrypted and specifically refers to by utilizing full light XOR gate, at the encryption end optical signal pulses sequence and light key pulse train are carried out by turn XOR, the XOR result is the encrypted result to the optical signal pulses sequence; In the described step 2.1] light key pulse train K
0Finish the deciphering to first via light ciphertext 0, produce light signal 0 and specifically refer in decrypting end light key pulse train and light ciphertext pulse train be carried out by turn XOR, the XOR result is the decrypted result to light ciphertext pulse train.
6. the method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system according to claim 5, it is characterized in that: need before end is carrying out full light XOR with decrypting end optical signal pulses sequence and light key pulse train or light ciphertext pulse train and light key pulse train are carried out Synchronization Control encrypting, the method of Synchronization Control is, place optical delay line in one road optical fiber link therein, by adjusting light time-delay length so that two signals are synchronous.
7. the method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system according to claim 1, it is characterized in that: at the encryption end light key pulse train and optical signal pulses sequence are inputted full light XOR gate, XOR output light is the encrypted result of first via light signal; Utilize first via optical signal pulses sequence to input full light XOR gate as light key and the second tunnel optical signal pulses sequence, XOR output light is the encrypted result of the second road light signal; By that analogy, utilize upper one tunnel optical signal pulses sequence as the encryption key of next road optical signal pulses sequence, two signals are inputted full light XOR gate simultaneously, finish the encryption to next road optical signal pulses sequence.
8. the method for distributing key based on the full light encryption and decryption of signal in the optical fibre wavelength-division multiplex system according to claim 1, it is characterized in that: simultaneously input full light XOR gate by the light key pulse train that safe lane receives as decruption key and first via light ciphertext pulse train in the decrypting end utilization, recover first via primary light signal by two signals being carried out the XOR computing; Recover the primary light signal as the decruption key of next road light ciphertext pulse train, two signals have been inputted full light XOR gate, recovered the second tunnel primary light signal by two signals being carried out the XOR computing; By that analogy, utilize primary light signal that upper one road decryption restoration goes out as the decruption key of next road light ciphertext, two signals are inputted full light XOR gate, recover next road primary light signal by two signals being carried out the XOR computing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210377669.3A CN102932137B (en) | 2012-10-08 | 2012-10-08 | Key distribution method based on all-optical encryption and decryption of signals in optical fiber wavelength division multiplexing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210377669.3A CN102932137B (en) | 2012-10-08 | 2012-10-08 | Key distribution method based on all-optical encryption and decryption of signals in optical fiber wavelength division multiplexing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102932137A true CN102932137A (en) | 2013-02-13 |
| CN102932137B CN102932137B (en) | 2015-05-27 |
Family
ID=47646844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210377669.3A Active CN102932137B (en) | 2012-10-08 | 2012-10-08 | Key distribution method based on all-optical encryption and decryption of signals in optical fiber wavelength division multiplexing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102932137B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980228A (en) * | 2015-06-29 | 2015-10-14 | 工业和信息化部电信研究院 | Optical signal transmission method and device |
| CN107786333A (en) * | 2017-11-02 | 2018-03-09 | 浙江工业大学 | A kind of optical signal two dimension enciphering/deciphering system based on time lens imaging |
| CN108141356A (en) * | 2015-10-15 | 2018-06-08 | 罗伯特·博世有限公司 | For generating the method for secret in the network at least two transmission channels |
| CN113644979A (en) * | 2021-06-25 | 2021-11-12 | 北京邮电大学 | Communication method and system based on phase rotation in overhead OPGW optical cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047494A (en) * | 2006-05-14 | 2007-10-03 | 华为技术有限公司 | Method and system of key consultation in PON system |
| US20100202612A1 (en) * | 2009-02-09 | 2010-08-12 | Taiki Nema | Optical network system and method of changing encryption keys |
-
2012
- 2012-10-08 CN CN201210377669.3A patent/CN102932137B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047494A (en) * | 2006-05-14 | 2007-10-03 | 华为技术有限公司 | Method and system of key consultation in PON system |
| US20100202612A1 (en) * | 2009-02-09 | 2010-08-12 | Taiki Nema | Optical network system and method of changing encryption keys |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980228A (en) * | 2015-06-29 | 2015-10-14 | 工业和信息化部电信研究院 | Optical signal transmission method and device |
| CN104980228B (en) * | 2015-06-29 | 2017-08-08 | 工业和信息化部电信研究院 | A kind of optical signal transmission method and device |
| CN108141356A (en) * | 2015-10-15 | 2018-06-08 | 罗伯特·博世有限公司 | For generating the method for secret in the network at least two transmission channels |
| CN107786333A (en) * | 2017-11-02 | 2018-03-09 | 浙江工业大学 | A kind of optical signal two dimension enciphering/deciphering system based on time lens imaging |
| CN107786333B (en) * | 2017-11-02 | 2023-11-28 | 浙江工业大学 | Optical signal two-dimensional encryption/decryption system based on time lens imaging |
| CN113644979A (en) * | 2021-06-25 | 2021-11-12 | 北京邮电大学 | Communication method and system based on phase rotation in overhead OPGW optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102932137B (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102932142B (en) | Optical Data Signal Encryption and Decryption Method in Optical Fiber Communication System | |
| US7620182B2 (en) | QKD with classical bit encryption | |
| CN101645770B (en) | Security instant communication system | |
| US8170211B2 (en) | Hub device for a network comprising quantum cryptographic connections and node module for said hub device | |
| CN102238005A (en) | Relaying method for remote secure quantum communication | |
| CN102447698B (en) | Encrypting and transmitting method for network communication information | |
| CN103260095B (en) | A kind of secret EPON based on Chaotic Synchronous | |
| CN104065421B (en) | A kind of wavelength saltus step Development of Chaotic Secure Communication Method based on multimode laser and system | |
| CN103763099A (en) | Electric power security communication network based on quantum key distribution technology | |
| CN101969376B (en) | Self-adaptive encryption system and method with semantic security | |
| CN110224821A (en) | A kind of communication encrypting method of unmanned mobile platform | |
| CN102932137B (en) | Key distribution method based on all-optical encryption and decryption of signals in optical fiber wavelength division multiplexing system | |
| US7492903B2 (en) | Secret key distribution method and secret key distribution system | |
| CN110611572A (en) | Asymmetric password terminal based on quantum random number, communication system and method | |
| CN106506518A (en) | The encryption/decryption module of big data safe transmission | |
| CN104980228A (en) | Optical signal transmission method and device | |
| Liu et al. | Exploiting optical chaos with time-delay signature suppression for long-distance secure communication | |
| US8428259B2 (en) | Apparatus and method for all-optical encryption and decryption of an optical signal | |
| CN107534558A (en) | For the method and data highway system of the information security for protecting the data via data bus transmission | |
| CN105429710A (en) | Phase modulation optical signal physical encryption method and system based on optical phase encryption | |
| CN102035642B (en) | Selection and synchronization method for counter in block cipher counter running mode | |
| CN206379044U (en) | A kind of teaching demonstration device of quantum cryptography communication combination optical fiber eavesdropping | |
| GB0028369D0 (en) | A communication system | |
| US7512237B1 (en) | Encryption for optical communications using dynamic subcarrier multiplexing | |
| CN109410394A (en) | A kind of method for sending information and information transmitting system of intelligent door lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |