CN107040378A - A kind of key dispatching system and method based on Multi-user Remote Communication - Google Patents
A kind of key dispatching system and method based on Multi-user Remote Communication Download PDFInfo
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- CN107040378A CN107040378A CN201710402460.0A CN201710402460A CN107040378A CN 107040378 A CN107040378 A CN 107040378A CN 201710402460 A CN201710402460 A CN 201710402460A CN 107040378 A CN107040378 A CN 107040378A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000001360 synchronised effect Effects 0.000 claims abstract description 24
- 230000006855 networking Effects 0.000 claims description 14
- 239000013307 optical fiber Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 3
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- 238000011161 development Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18504—Aircraft used as relay or high altitude atmospheric platform
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
- H04L9/0855—Quantum cryptography involving additional nodes, e.g. quantum relays, repeaters, intermediate nodes or remote nodes
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Abstract
The invention discloses a kind of key dispatching system based on Multi-user Remote Communication and method, each user terminal quantum key synchronous with central management system is realized by way of aircraft carries key Relay Server, then session key is distributed to the user terminal for needing to participate in communication by central management system by way of quantum key encrypted session key, and packet only needs to session key, realize the purpose of multi-party users terminal communication, the present invention not only ensures multi-party communication absolute safety, it it also avoid requirement of the one-packet key to QKD system high standard, quantum cryptography communication is set to be applied to extensive multi-party communication occasion well；Meanwhile, quantum channel need not be built between each user terminal and central management system, the problem of not only solving quantum information telepak transmission attenuation, while also alleviating the problem of quantum channel deployment is difficult.
Description
Technical field
The present invention relates to safety communication technology field, more particularly to a kind of encryption key distribution system based on Multi-user Remote Communication
System and method.
Background technology
With a wide range of popularization of internet, the information transmission between the mankind has reached unprecedented quantity and frequency,
Various privacy informations expose on the internet more and more, and therefore, the mankind have also arrived unprecedented to the demand of secret communication
Height.The cipher mode of present internet information safety is referred to as " public-key cryptography " cryptosystem, and its principle is by encryption
The public-key cryptography propagated on algorithm, generation network, and the private key of computer-internal is stayed in, two keys must coordinate and make
With complete encryption and decryption processes could be realized.
The encryption standard that modern the Internet is used is the RSA Algorithm being born 1970s, i.e., using matter several greatly because
Son, which is decomposed, to be difficult to calculate to ensure the security of key.
Quantum-key distribution is that physicist Bennett in 1984 and cryptologist Brassard are proposed based on quantum force
The BB84 agreements of measuring principle are learned, quantum-key distribution can fundamentally ensure that the security of key.
At present, in Data Encryption Techniques field, the netkey generating rate based on QKD is relatively low, is difficult to realize a bag one
Close requirement；In addition, the key obtained from QKD networks can only be shared between two nodes connected by quantum channel,
Can not large-scale application in the occasion of multi-party communication, the development communicated to quantum cryptography causes very big limitation.
The content of the invention
It is existing to solve present invention aims at a kind of key dispatching system and method based on Multi-user Remote Communication is provided
There is the netkey generating rate based on QKD in technology relatively low, be difficult to realize the requirement of one-packet key；In addition, from QKD networks
The key of acquisition can only be shared between two nodes connected by quantum channel, it is impossible to which large-scale application is in multi-party communication
Occasion, the development communicated to quantum cryptography causes the technical bug of very big limitation.
The technical proposal of the invention is realized in this way：
A kind of key dispatching system based on Multi-user Remote Communication, including：
Central management system, the central management system is provided with can generate the reception of shared quantum key with user terminal
Look sub-key distributor, the session key distribution device that session key can be generated, session key management server and quantum up and down close
Key management server；
Key relay, key Relay Server of the key relay including aircraft and interconnection,
Quantum-key distribution device is relayed, the aircraft can carry key Relay Server, relaying quantum-key distribution device in central tube
Flown between reason system and user terminal；
User terminal, the user terminal is connected with transmitting terminal quantum-key distribution device, the transmitting terminal quantum key point
The relaying quantum-key distribution device that orchestration can come with aircraft carrying produces quantum key.
Preferably, the key Relay Server include Key Storage Database, pool of keys management module, networking module,
Key synchronization module, Key Acquisition Module, User Access Module, encryption/decryption module, message queue, network transmission module and
USB transmission module, the pool of keys management module connects Key Storage Database respectively, networking module, key synchronization module, close
Key acquisition module and User Access Module, the networking module, key synchronization module, Key Acquisition Module, user's access mould
Block and quantum key generation module difference connection message queue, the message queue be also respectively connected with network transmission module and
USB transmission module, the encryption/decryption module connects networking module, key synchronization module, Key Acquisition Module, user's access respectively
Module.
Preferably, the Key Storage Database includes some group key memory cell.
Preferably, the User Access Module includes user authentication unit.
Preferably, the user terminal includes voice terminal, video terminal, mail terminal.
The invention provides a kind of method for distributing key based on Multi-user Remote Communication, comprise the following steps：
1) key relay is transported to user terminal location by aircraft, and quantum-key distribution device will be relayed by optical fiber
It is connected with transmitting terminal quantum-key distribution device, now, transmitting terminal quantum-key distribution device is generated with relaying quantum-key distribution device
Quantum key to be synchronized, and be stored in pool of keys management module；
2) key relay is transported to central management system position by aircraft, and quantum key point will be relayed by optical fiber
Orchestration is connected with receiving terminal quantum-key distribution device, now, receiving terminal quantum-key distribution device and relaying quantum-key distribution device
Generate quantum key；
3) quantum key of user terminal is synchronized to central management system：Key relay is with the present apparatus in central tube
Quantum key to be synchronized is encrypted the quantum key of reason system generation；
4) quantum key to be synchronized after encryption is sent to central management system and is synchronized to quantum key management service
In device；
5) quantum key to be synchronized after encryption is decrypted to form user terminal with for quantum key management server
Shared quantum key between heart management system.
6) session key is generated：Session key distribution device in central management system is whole according to user in units of session
The demand at end is that there is provided to the user terminal in session for user's generation session key；
7) transmission of session key：When session key is transmitted between central management system and user terminal, by shared
Quantum key transmission is encrypted；
8) session between user terminal：Session key is transmitted to the use for treating session by way of shared quantum key encryption
Family terminal, the user terminal obtains session key, you can conversate.
Preferably, by step 5) after, by quantum key to be synchronized from the pool of keys management module of key relay
Delete.
Preferably, the user terminal includes voice terminal, video terminal, mail terminal.
Compared with prior art, the present invention has following beneficial effect：
The key dispatching system based on Multi-user Remote Communication and method of the present invention, passes through aircraft and carries key and relay
The mode of server realizes each user terminal quantum key synchronous with central management system, then central management system throughput
Session key is distributed to the user terminal for needing to participate in communication by the mode of sub-key encrypted session key, and packet is only needed to
Session key, realizes the purpose of multi-party users terminal communication, and the present invention not only ensures multi-party communication absolute safety,
Requirement of the one-packet key to QKD system high standard is it also avoid, quantum cryptography communication is applied to well extensive multi-party logical
Believe occasion；Meanwhile, quantum channel need not be built between each user terminal and central management system, quantum is not only solved
The problem of information remote transmission is decayed, while also alleviating the problem of quantum channel deployment is difficult.
Brief description of the drawings
Fig. 1 is the theory diagram of the key dispatching system of the invention based on Multi-user Remote Communication；
Fig. 2 is video terminal conversation modes figure in the present invention.
In figure：Central management system 100, receiving terminal quantum-key distribution device 101, session key distribution device 102, session is close
Key management server 103, quantum key management server 104, key relay 200, aircraft 201, key relay services
Device 202, relaying quantum-key distribution device 203, user terminal 300, transmitting terminal quantum-key distribution device 301.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the present invention is clearly and completely described.
As shown in figure 1, a kind of key dispatching system based on Multi-user Remote Communication, including：
Central management system 100, the central management system 100 is provided with can be with the shared quantum of the generation of user terminal 300
The receiving terminal quantum-key distribution device 101 of key, the session key distribution device 102 that session key can be generated, session key management
Server 103 and quantum key management server 104；
Key relay 200, the key relay 200 is included in aircraft 201 and the key being connected with each other
After server 202, relaying quantum-key distribution device 203, the aircraft 201 can carry key Relay Server 202, relaying amount
Sub-key distributor 203 flies between central management system 100 and user terminal 300；
User terminal 300, the user terminal 300 is connected with transmitting terminal quantum-key distribution device 301, described to send looking somebody up and down
The relaying quantum-key distribution device 203 that sub-key distributor 301 can come with aircraft carrying produces quantum key.
The user terminal 300 and central management system 100 only need to connect by classical channel, the classics
Channel is used for the session key that transmission of quantum key is encrypted.Each user terminal 300 and central management system 100 need not be taken
Connect quantum channel, it is to avoid channel builds the limitation of landform and distance.
The key Relay Server 202 includes Key Storage Database, pool of keys management module, networking module, key
Synchronization module, Key Acquisition Module, User Access Module, encryption/decryption module, message queue, network transmission module and USB are passed
Defeated module, the pool of keys management module connects Key Storage Database, networking module, key synchronization module, key and obtained respectively
Modulus block and User Access Module, the networking module, key synchronization module, Key Acquisition Module, User Access Module with
And quantum key generation module distinguishes connection message queue, the message queue is also respectively connected with network transmission module and USB
Transport module, the encryption/decryption module connects networking module, key synchronization module, Key Acquisition Module, user's access mould respectively
Block.The Key Storage Database is used to store key, is respectively stored in key according to key ID in different tables；It is described close
Key pond management module changes for additions and deletions looks into key；The networking module is used to realize the addition of communication node and the work(that exits network
Energy；The key synchronization module is used for the key synchronization of remote node to cipher key center management server；The key is obtained
Module reads key from pool of keys, submits to caller, while updating the key state in pool of keys；The user accesses mould
Block is used for the certification for realizing user；The relaying quantum-key distribution device is used to generate new quantum key, writes pool of keys, together
Shi Tongzhi key synchronization modules, carry out key synchronization；The encryption/decryption module is used for the encryption and decryption of data；The message team
Arrange for distributing the data received from network transmission module and USB transmission module that (networking module, key are same to each processing module
Walk module, Key Acquisition Module, User Access Module, quantum key generation module), and receive what each processing module came
Message, carries out network transmission；The network transmission module is used to send and receive data by network；The USB transmission module
For reading and writing data.The Key Storage Database includes some group key memory cell, using key packet transaction
The byte length of key ID can be reduced, so as to reduce the memory space of pool of keys shared by key ID.The User Access Module bag
Include user authentication unit.The user terminal 300 includes voice terminal, video terminal, mail terminal.
The present invention key dispatching system constitute unified key distribution network, the encryption key distribution include quantum key with
And session key (transmission key), the principle that notes of the present invention is：Need to participate in what is communicated with any using central management system
The synchronous shared quantum key of user terminal, due in quantum key synchronizing process by quantum signal long range transmission attenuation
And the problem of remote laying quantum channel inconvenience, in being transported at a distance using aircraft carrying key relay
Heart management system and user terminal, so as to realize that the quantum key of user terminal and central management system is shared, then ask meeting
The user terminal of words can create session key to central management system request, and central management system uses the session key after establishment
Quantum key encryption is sent to each corresponding user terminal, and so far each treats that session subscriber terminal has obtained session key,
Each last user terminal is communicated by session key data.
The invention provides a kind of method for distributing key based on Multi-user Remote Communication, comprise the following steps：
1) key relay is transported to user terminal location by aircraft, and quantum-key distribution device will be relayed by optical fiber
It is connected with transmitting terminal quantum-key distribution device, now, transmitting terminal quantum-key distribution device is generated with relaying quantum-key distribution device
Quantum key to be synchronized, and be stored in pool of keys management module；
2) key relay is transported to central management system position by aircraft, and quantum key point will be relayed by optical fiber
Orchestration is connected with receiving terminal quantum-key distribution device, now, receiving terminal quantum-key distribution device and relaying quantum-key distribution device
Generate quantum key；
3) quantum key of user terminal is synchronized to central management system：Key relay is with the present apparatus in central tube
Quantum key to be synchronized is encrypted the quantum key of reason system generation；
4) quantum key to be synchronized after encryption is sent to central management system and is synchronized to quantum key management service
In device；
5) quantum key to be synchronized after encryption is decrypted to form user terminal with for quantum key management server
Shared quantum key between heart management system.
6) session key is generated：Session key distribution device in central management system is whole according to user in units of session
The demand at end is that there is provided to the user terminal in session for user's generation session key；
7) transmission of session key：When session key is transmitted between central management system and user terminal, by shared
Quantum key transmission is encrypted；
8) session between user terminal：Session key is transmitted to the use for treating session by way of shared quantum key encryption
Family terminal, the user terminal obtains session key, you can conversate.
By step 5) after, quantum key to be synchronized is deleted from the pool of keys management module of key relay.
In the above method, the user terminal includes voice terminal, video terminal, mail terminal.
In this method, the user terminal includes voice terminal, video terminal, mail terminal.
As shown in Fig. 2 being video terminal conversation modes, session request is sent from user terminal A to user terminal B, C, it is first
First, the quantum that key relay and the central management system generation that user terminal A, B, C are carried by aircraft respectively are shared
Key, while central management system is created that session key according to the specific request of user terminal A, central management system is with shared
The mode of quantum key encrypted session key give corresponding user terminal A, B or C by session key distribution, now, user is whole
End A sends the data to video session Key Management server by the way of session key data, then video session
Key Management server sends data to user terminal B and C, and user terminal B and C receives the data of A encryptions, and passes through session
Secret key decryption data, just can carry out multi-party video session, be distributed to respectively because session key uses quantum key encryption
Individual user terminal A, B or C, so session key is perfectly safe, therefore can securely achieve multi-party communication.
The system architecture of the comprehensive present invention understands that the key of the invention based on Multi-user Remote Communication divides with method and step
Match system and method, each user terminal and central management system are realized by way of aircraft carries key Relay Server
Synchronous quantum key, then central management system by way of quantum key encrypted session key by session key be distributed to need
The user terminal of communication is participated in, and packet only needs to session key, realizes the mesh of multi-party users terminal communication
, the present invention not only ensures multi-party communication absolute safety, it also avoid requirement of the one-packet key to QKD system high standard, makes
Quantum cryptography communication is applied to extensive multi-party communication occasion well；Meanwhile, each user terminal and central management system
Between need not build quantum channel, the problem of not only solving quantum information telepak transmission attenuation, while also alleviating
The problem of quantum channel deployment is difficult.
Claims (8)
1. a kind of key dispatching system based on Multi-user Remote Communication, it is characterised in that including：
Central management system, the central management system is provided with can generate the reception looking somebody up and down of shared quantum key with user terminal
Sub-key distributor, the session key distribution device that session key can be generated, session key management server and quantum key pipe
Manage server；
Key relay, the key relay includes aircraft and key Relay Server, the relaying of interconnection
Quantum-key distribution device, the aircraft can carry key Relay Server, relaying quantum-key distribution device in centre management system
Flown between system and user terminal；
User terminal, the user terminal is connected with transmitting terminal quantum-key distribution device, the transmitting terminal quantum-key distribution device
The relaying quantum-key distribution device that can come with aircraft carrying produces quantum key.
2. the key dispatching system as claimed in claim 1 based on Multi-user Remote Communication, it is characterised in that in the key
After server include Key Storage Database, pool of keys management module, networking module, key synchronization module, Key Acquisition Module,
User Access Module, encryption/decryption module, message queue, network transmission module and USB transmission module, the pool of keys manage mould
Block connects Key Storage Database, networking module, key synchronization module, Key Acquisition Module and User Access Module respectively,
The networking module, key synchronization module, Key Acquisition Module, User Access Module and quantum key generation module connect respectively
Message queue is connect, the message queue is also respectively connected with network transmission module and USB transmission module, the encryption/decryption module point
Lian Jie not networking module, key synchronization module, Key Acquisition Module, User Access Module.
3. the key dispatching system as claimed in claim 2 based on Multi-user Remote Communication, it is characterised in that the key is deposited
Storing up database includes some group key memory cell.
4. the key dispatching system as claimed in claim 3 based on Multi-user Remote Communication, it is characterised in that the user connects
Entering module includes user authentication unit.
5. the key dispatching system based on Multi-user Remote Communication as described in any in claim 1-4, it is characterised in that institute
Stating user terminal includes voice terminal, video terminal, mail terminal.
6. a kind of method for distributing key based on Multi-user Remote Communication based on any one of claim 1-5, its feature exists
In comprising the following steps：
1) key relay is transported to user terminal location by aircraft, and quantum-key distribution device and hair will be relayed by optical fiber
Sending end quantum-key distribution device is connected, now, and transmitting terminal quantum-key distribution device treats same with the device generation of relaying quantum-key distribution
Quantum key is walked, and is stored in pool of keys management module；
2) key relay is transported to central management system position by aircraft, and quantum-key distribution device will be relayed by optical fiber
It is connected with receiving terminal quantum-key distribution device, now, receiving terminal quantum-key distribution device is generated with relaying quantum-key distribution device
Quantum key；
3) quantum key of user terminal is synchronized to central management system：Key relay is with the present apparatus in centre management system
Quantum key to be synchronized is encrypted the quantum key of system generation；
4) quantum key to be synchronized after encryption is sent to central management system and is synchronized in quantum key management server；
5) quantum key management server is decrypted to form user terminal and central tube to the quantum key to be synchronized after encryption
Shared quantum key between reason system.
6) session key is generated：Session key distribution device in central management system is in units of session, according to user terminal
Demand is that there is provided to the user terminal in session for user's generation session key；
7) transmission of session key：When session key is transmitted between central management system and user terminal, pass through shared amount
Transmission is encrypted in sub-key；
8) session between user terminal：Session key is transmitted whole to the user for treating session by way of sharing quantum key encryption
End, the user terminal obtains session key, you can conversate.
7. the method for distributing key as claimed in claim 6 based on Multi-user Remote Communication, it is characterised in that pass through step 5)
Afterwards, quantum key to be synchronized is deleted from the pool of keys management module of key relay.
8. the method for distributing key as claimed in claim 7 based on Multi-user Remote Communication, it is characterised in that the user is whole
End includes voice terminal, video terminal, mail terminal.
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