CN102368704A - Encryption and decryption methods and systems thereof for hardware of superspeed optical packet switching network - Google Patents
Encryption and decryption methods and systems thereof for hardware of superspeed optical packet switching network Download PDFInfo
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- CN102368704A CN102368704A CN2011103209852A CN201110320985A CN102368704A CN 102368704 A CN102368704 A CN 102368704A CN 2011103209852 A CN2011103209852 A CN 2011103209852A CN 201110320985 A CN201110320985 A CN 201110320985A CN 102368704 A CN102368704 A CN 102368704A
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Abstract
The invention provides an encryption and decryption methods and systems thereof for hardware of a superspeed optical packet switching network. The encryption method comprises the following steps that: an IP data packet in an electric domain is segmented; segmentation units of the segmented IP data packet are reordered and encryption again; the encrypted IP data packet is modulated into an optical signal; and encryption is carried out on the optical signal and an encrypted high-speed optical packet signal is output. Besides, the decryption method comprises the following steps that: after an encrypted high-speed optical packet signal is amplified, the amplified signal is divided into a multi-path optical packet signals; after each path of the optical packet signal is synchronized with a local clock, signal extraction is carried out so as to extract low speed optical signals; detection is carried out on the extracted low-speed optical signals so as to obtain detection signals; and reversed ordering is carried out on the detected signals. According to the invention, the structure of the encryption apparatus provided in the invention has a simple structure and is easy to manufacture; and components of the apparatus are capable of carrying out optical integration. Moreover, costs are low; and an encryption scheme provided in the invention is suitable for application to network system with various speeds.
Description
Technical field
The present invention relates to optical communication safe practice field, relate in particular to a kind of ultra high-speed optical packet switching network hardware encipher and decryption method and system thereof.
Background technology
Communication message safety is just extremely important since ancient times, especially the information security of military field and secret department more show particularly important, or even the factor of first consideration.In radio communication, secret causes concern day by day with safety in the Internet and the optical communication net.And along with being widely used of optical communication, the information security in the optical communication is attracting increasing attention and research interest.Optical communication network has this requirement of different demands can be divided into light path exchange, light burst-switched, light packet switch according to the user to bandwidth.And the light packet switch is as one of the most promising selection of following light exchange.Encryption technology to the light packet switch is worth research and concern very much." encryption " is meant that making information translation through security key is the variation of impenetrable encryption format.If destination is known the security key of enciphered message, information encrypted just can be transformed to understandable information and promptly decipher.The application encipher technology, even the light beam of transmission information is intercepted and captured, the interceptor does not know encrypting key, the light package informatin of transmission remains safe.
Usually information is used various technology secrecies with electronic form; Use information encrypted modulated carriers light afterwards, information encrypted just is converted into the form of light, at receiving terminal; Light signal is converted into the signal of telecommunication; And then with security key the signal of telecommunication of encrypting is deciphered, for such cipher mode, which kind of security key don't work; All need adjunct circuit mixing and to separate coded communication information and security key at the reflector of system and receiver two ends, and need the expense of increase system to accomplish encryption and decryption.Along with information security require increasingly highly, encrypt density, enciphering rate all will improve, and has so just increased the complexity of adjunct circuit.
Present existing encryption technology mainly contains:
1, ACS that changes and disclosed close spoon agreement are like Elliptic Curve Cryptography (ECC) and Suite B.The disclosed close spoon agreement of Suite B has Elliptic Curve Menezes-Qu-Vanstone (ECMQV) and the Elliptic Curve Diffie-Hellman (ECDH).But these encryption principles mainly are based on software algorithm and encrypt, and weakness and non-safety are arranged, and report that recently the SHA-1 algorithm decoded by the research group of China.
2, based on the encryption method of principle of quantum mechanics.The principle that quantum cryptography adopts is to have set up the notion of quantum cryptography according to " Heisenberg's uncertainty principle " and " the not reproducible theorem of single quantum " principle." Heisenberg uncertainty principle " is quantum-mechanical basic principle, refers to that position and the momentum of measuring quantum with same precision at synchronization are impossible, can only accurately measure both one of; And " the not reproducible theorem of single quantum " is the inference of " Heisenberg uncertainty principle "; It refers to do not knowing that it is impossible duplicating single quantum under the situation of quantum state; Just can only measure earlier because duplicate single quantum, and measure the state that must change quantum.But that is that all right is ripe for correlation technique, implements more complicated, uses apart from optical communication to also have certain distance.
Summary of the invention
In order to solve the technical problem that exists in the background technology; The present invention provide a kind of simple in structure, be easy to make, but optics integrated, be easy to upgrade, with low cost, applicable to the ultra high-speed optical packet switching network hardware encipher in the network system of various speed and decryption method and system thereof.
Technical solution of the present invention is:
A kind of ultra high-speed optical packet switching network hardware encipher method, this method may further comprise the steps:
1) the IP packet in electric territory is cut apart;
2) rearrangement of the IP packet cutting unit after will cutting apart is encrypted;
3) the IP packet after will encrypting is modulated into light signal;
4) light signal is encrypted, and the two-forty light bag signal after the output encryption.
Above-mentioned steps 1) concrete performing step is following:
1.1) the IP packet in electric territory is divided into packet header and payload two parts; Payload part is carried out equal length and is divided into the payload cutting unit; If payload part can be required the number of cutting apart and divide exactly, then directly cut apart, then add zero till can dividing exactly as if aliquant at the payload part end;
1.2) judge whether the length in payload cutting unit and packet header equates? If then directly modulate; If not, then the packet header trailing zero to and payload cutting unit equal in length after, modulate again.
The quantity that the above-mentioned IP packet is cut apart is one or more.
Above-mentioned steps 2) concrete performing step is following:
IP packet cutting unit after will cutting apart is according to the encryption of transmitting terminal and the receiving terminal agreement encryption of resequencing in proper order.
A kind of ultra high-speed optical packet switching network hardware decryption method, this method may further comprise the steps:
1) the two-forty light bag signal after will encrypting is divided into multichannel light bag signal after amplifying;
2) each road light bag signal and local clock carry out signal extraction synchronously, extract the low speed light signal;
3) the low speed light signal that extracts is surveyed, obtained detectable signal;
4) sort the signal that detects is counter.
The quantity on above-mentioned road is consistent with the quantity of cutting apart that the IP packet is cut apart.
A kind of ultra high-speed optical packet switching network hardware encipher system, this system comprise that first image intensifer, IP packet cut apart module, ordering processing module, modulator and encryption equipment; Said IP packet is cut apart module and is linked to each other through the ordering processing module with modulator; Said ordering processing module links to each other with first image intensifer; Said modulator links to each other with encryption equipment.
Above-mentioned encryption equipment can be made up of fibre delay line array and mixer, also can be that the space postpones array and speculum is formed.
A kind of ultra high-speed optical packet switching network hardware decryption system, this system comprises second image intensifer, splitter, signal extraction module and detector; Said second image intensifer links to each other through splitter with the signal extraction module; Said signal extraction module links to each other with detector.
Above-mentioned signal extraction module can adopt that the four-wave mixing effect of semiconductor optical amplifier SOA forms with door, also can adopt hertz full light of light asymmetric demultiplexer (TOAD) and the full light of door, periodically poled lithium niobate crystal (PPLN) and the full light and the full light of door, 1550nm Laser Amplifiers (Fabry-Perot and Distributed Feedback Laser Amplifiers) and the full light and isostructural full light of door and door of door, SOA-MZI structure of door, compound waveguiding structure.
Advantage of the present invention is:
1, simple in structure, be easy to make, but optics is integrated.Encryption device provided by the present invention is made up of bag dividing processing chip, time-delay array and mixer etc., and decoder realized with door by optics such as SOA, and these devices are can optics integrated, and technology maturation, and are simple in structure, are easy to make.
2, needing specific light path could accomplish signal cracks.The present invention could accomplish the deciphering of pulse position encryption deciphering the time need be accomplished the aligning in encrypted packet and local clock source in the light territory after, so has only specific decipher could accomplish accordingly and decipher.
3, need not add any expense, be easy to the upgrading.Encipherment scheme utilization provided by the invention is to Noncoded Information reconfiguring and realizing encrypting at the light pulse position change in light territory in electric territory; So need not increase any overhead; The size of change time-delay array that we only need to increase or reduce spacing block number and the response of IP packet just can change system, is highly susceptible to upgrading.
4, the deciphering probability reduces with the increase of cutting apart quantity and the difficulty that increases deciphering along with the variation of time-delay increases.The present invention is along with the increase of IP packet block number causes the combined number increase of piece rearrangement and the increase of light pulse change in location to cause the difficulty of the unordered more feasible decoding of compressed package earth pulse speed also to increase.
5, with low cost.Encipherment scheme provided by the present invention makes the IP packet be segmented in the electric territory of low speed and accomplish that encryption equipment is simple in structure, separates and encrypts the device comparative maturity, and is therefore whole with low cost.
6, in the network system applicable to various speed.Because this encipherment scheme of the present invention is transparent to original IP packet rate, so be applicable to the network system of various speed.
Description of drawings
Fig. 1 is the schematic flow sheet of encryption method of the present invention;
Fig. 2 is the schematic flow sheet of decryption method of the present invention;
Fig. 3 for standard I P packet of the present invention with cut apart after IP packet structure sketch map;
Fig. 4 is a light packet encryption structural representation of the present invention;
Fig. 5 is an encryption principle sketch of the present invention;
Fig. 6 is light bag deciphering structural representation of the present invention;
Fig. 7 is the structural representation of encryption system according to the invention;
Fig. 8 is the structural representation of decryption system according to the invention.
Embodiment
Referring to Fig. 1, ultra high-speed optical packet switching network hardware encipher method provided by the present invention may further comprise the steps: 1) the IP packet with electric territory is divided into header part and payload part; Payload part is carried out equal length be divided into the payload cutting unit,, then directly cut apart, then add zero till can dividing exactly at the payload part end as if aliquant if payload part can be required the number of cutting apart and divide exactly; Do you judge whether payload cutting unit and packet header length equate? If then directly modulate; If not, then in packet header trailing zero to and payload cutting unit equal in length.
2) rearrangement of the IP packet after will cutting apart is encrypted;
3) the IP packet after will encrypting is modulated into light signal;
4) light signal is encrypted, and the two-forty light bag signal after the output encryption.
Above-mentioned steps 1) concrete performing step is following:
The IP packet in electricity territory gets in the electric buffer memory and is divided into packet header and payload in electric territory; Payload part will be utilized electron process chip to carry out equal length to cut apart; The order that IP packet after will cutting apart utilizes process chip to decide through consultation according to transmitting terminal and receiving terminal is resequenced, and accomplishes ordering and encrypts, and modulate; The compressor reducer of light signal input optical fibre delayed linear array after the modulation and mixer composition is carried out the pulse position encryption; Delay time the time of delay that the optical fiber on each road is decided through consultation according to transmitting terminal and destination accordingly, and the two-forty light bag signal after the output encryption, and between this high-speed light bag signal pulse is unequal at interval.
Referring to Fig. 2, the decryption method of ultra high-speed optical packet switching network hardware may further comprise the steps:
1) the two-forty light bag signal after the encryption is divided into multichannel light bag signal after amplifying;
2) each road light bag signal and local clock carry out signal extraction synchronously, extract the low speed light signal;
3) the low speed light signal that extracts is surveyed, obtained detectable signal;
4) sort the signal that detects is counter.
After two-forty light bag signal after the encryption arrives destination node; After the amplification of second erbium-doped fiber amplifier 9 (EDFA); Be divided into multichannel light bag signal through splitter 10; The quantity on road and IP packet are cut apart, and to cut apart quantity consistent, and each road light bag signal and local clock (delay time the time of delay according to transmitting terminal accordingly) back synchronously inject the signal extraction module 11 of utilizing the SOA four-wave mixing effect to form and carry out signal extraction, and the low speed light signal that extracts is surveyed; The signal that detects with anti-ordering of collating sequence of making a start, is accomplished deciphering.
The quantity that the IP packet is cut apart is variable, and it is low more that the quantity of cutting apart is deciphered probability more at most; The time of delay that each road time delays in compressor reducer is decided through consultation according to transmitting terminal and destination is variable; When the IP packet is cut apart packet header is split separately, payload part is cut apart, if payload cutting unit and packet header equal in length then directly modulate, if do not wait then in packet header trailing zero extremely and payload cutting unit equal in length.
Referring to Fig. 3, the IP packet can form packet header (head) part and payload part after cutting apart, and the while payload part is carried out equal length and is divided into payload cutting unit (data P1, data P2 ... Data P8).
Referring to Fig. 4; Light impulse source 1 produces and is divided into 9 the tunnel after the 10Gbps light pulse is amplified through first image intensifer 5, gets into respectively in the modulator 7 of 10G, and the IP packet that arrives simultaneously is after over-segmentation module 6; Packet header and payload part be storage separately separately; Payload part is divided into 8 storages respectively, if packet header and the isometric modulator 7 that then directly gets into of payload piecemeal are not then resequenced in the order that the zero padding of end, packet header makes piecemeal and packet header is isometric and utilization ordering processing module 13 is decided through consultation according to transmitting terminal and receiving terminal as if isometric; Accomplish ordering and encrypt, the back gets into modulator 7 and is modulated into the 10G light signal.The compressor reducer 8 that light signal after the modulation gets into light time-delay array and mixer composition carries out the pulse position encryption; Delay time the time of delay that the optical fiber on each road is decided through consultation according to transmitting terminal and destination accordingly; And the two-forty light bag signal after the output encryption, this high-speed light bag signal is the variable speed rate.
Referring to Fig. 5, after the encryption equipment encryption, light signal is encrypted to two-forty light bag signal and becomes the 90Gbps light signal.
Referring to Fig. 6; After arriving, the light bag is divided into 9 the tunnel through passing through splitter 10 again after 9 amplifications of second image intensifer; Simultaneously local 10Gbps light impulse source triggers; Through being divided into 9 the tunnel through splitter 10 after 9 amplifications of second image intensifer, after extra pulse is aimed at, together inject signal extraction module 11 respectively and carry out signal decompression with light bag signal, the 10Gbps signal after the decompression gets into detector 12 through shaping pulse; The anti-ordering of collating sequence that detector 12 signals detected utilizations are made a start accomplished deciphering.
Referring to Fig. 7, ultra high-speed optical packet switching network hardware encipher system 2 comprises that first image intensifer 5, IP packet cut apart module 6, ordering processing module 13, modulator 7 and encryption equipment 8; The IP packet is cut apart module 6 and is linked to each other through ordering processing module 13 with modulator 7; Ordering processing module 13 links to each other with first image intensifer 5; Modulator 7 links to each other with encryption equipment 8.
Referring to Fig. 8, the decryption system 3 of ultra high-speed optical packet switching network hardware comprises second image intensifer 9, splitter 10, signal extraction module 11 and detector 12; Second image intensifer 9 links to each other through splitter 10 with signal extraction module 11; Signal extraction module 11 links to each other with detector 12.
Claims (7)
1. ultra high-speed optical packet switching network hardware encipher and decryption method is characterized in that:
Said encryption method may further comprise the steps:
1) the IP packet with electric territory is divided into header part and payload part;
1.1) the IP packet in electric territory is divided into packet header and payload two parts; Payload part is carried out equal length and is divided into the payload cutting unit; If payload part can be required the number of cutting apart and divide exactly, then directly cut apart, then add zero till can dividing exactly as if aliquant at the payload part end;
1.2) judge whether the length in payload cutting unit and packet header equates? If then directly modulate; If not, then the packet header trailing zero to and payload cutting unit equal in length after, modulate again;
2) rearrangement of the IP packet cutting unit after will cutting apart is encrypted;
3) the IP packet after will encrypting is modulated into light signal;
4) light signal is carried out the position and encrypt, and the two-forty light bag signal after the output encryption;
Said decryption method may further comprise the steps:
1) the two-forty light bag signal after the encryption is divided into multichannel light bag signal after amplifying;
2) each road light bag signal and local clock carry out signal extraction synchronously, extract the low speed light signal;
3) the low speed light signal that extracts is surveyed, obtained detectable signal;
4) sort the signal that detects is counter.
2. ultra high-speed optical packet switching network hardware encipher according to claim 1 and decryption method is characterized in that: the concrete performing step step 2 of said encryption method) is following: the IP packet cutting unit after will cutting apart is according to the encryption of transmitting terminal and the receiving terminal agreement encryption of resequencing in proper order.
3. ultra high-speed optical packet switching network hardware encipher according to claim 1 and 2 and decryption method is characterized in that: the quantity of said IP packet cutting unit is one or more.
4. according to the decryption method of claim 1 or 2 said ultra high-speed optical packet switching network hardware, it is characterized in that: the quantity on the road the step 2 of said decryption method) and the IP packet in the step 1) of encryption method are cut apart, and to cut apart quantity consistent.
5. a ultra high-speed optical packet switching network hardware encipher and decryption system of realizing claim 1 or 2 described ultra high-speed optical packet switching network hardware encipher methods is characterized in that: said encryption system comprises that first image intensifer, IP packet cut apart module, ordering processing module, modulator and encryption equipment; Said IP packet is cut apart module and is linked to each other through the ordering processing module with modulator; Said ordering processing module links to each other with first image intensifer; Said modulator links to each other with encryption equipment;
Said decryption system comprises second image intensifer, splitter, signal extraction module and detector; Said second image intensifer links to each other through splitter with the signal extraction module; Said signal extraction module links to each other with detector.
6. ultra high-speed optical packet switching network hardware encipher according to claim 5 and decryption system is characterized in that: said encryption equipment can be that fibre delay line array and mixer are formed, and also can be the related method thereof that the space postpones array and speculum.
7. ultra high-speed optical packet switching network hardware decryption according to claim 5 system; It is characterized in that: said signal extraction module adopt that the four-wave mixing effect of semiconductor optical amplifier SOA forms with door, or adopt hertz full light of light asymmetric demultiplexer (TOAD) and the full light of door, periodically poled lithium niobate crystal (PPLN) and the full light and the full light of door, 1550nm Laser Amplifiers (Fabry-Perot and Distributed Feedback Laser Amplifiers) and the full light and isostructural full light of door and door of door, SOA-MZI structure of door, compound waveguiding structure.
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| CN102638792A (en) * | 2012-05-15 | 2012-08-15 | 郑州信大捷安信息技术股份有限公司 | Wireless network secure transmission system and method based on hardware encryption |
| WO2017133598A1 (en) * | 2016-02-05 | 2017-08-10 | Huawei Technologies Co., Ltd. | System and Method for Generating an Obfuscated Optical Signal |
| CN109889335A (en) * | 2019-02-22 | 2019-06-14 | 中国电子科技集团公司第三十研究所 | Based on the random novel high safety optical link secret communication method for shunting encrypted transmission |
| CN116980890A (en) * | 2023-09-20 | 2023-10-31 | 北京集度科技有限公司 | Information security communication device, method, vehicle and computer program product |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102638792A (en) * | 2012-05-15 | 2012-08-15 | 郑州信大捷安信息技术股份有限公司 | Wireless network secure transmission system and method based on hardware encryption |
| WO2017133598A1 (en) * | 2016-02-05 | 2017-08-10 | Huawei Technologies Co., Ltd. | System and Method for Generating an Obfuscated Optical Signal |
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| CN109889335A (en) * | 2019-02-22 | 2019-06-14 | 中国电子科技集团公司第三十研究所 | Based on the random novel high safety optical link secret communication method for shunting encrypted transmission |
| CN109889335B (en) * | 2019-02-22 | 2021-07-09 | 中国电子科技集团公司第三十研究所 | Novel high-safety optical link secret communication method based on random shunt encryption transmission |
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| CN116980890B (en) * | 2023-09-20 | 2023-12-22 | 北京集度科技有限公司 | Information security communication device, method, vehicle and computer program product |
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Application publication date: 20120307 |