CN107147492A - A kind of cipher key service System and method for communicated based on multiple terminals - Google Patents
A kind of cipher key service System and method for communicated based on multiple terminals Download PDFInfo
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- CN107147492A CN107147492A CN201710405969.0A CN201710405969A CN107147492A CN 107147492 A CN107147492 A CN 107147492A CN 201710405969 A CN201710405969 A CN 201710405969A CN 107147492 A CN107147492 A CN 107147492A
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- 238000000034 method Methods 0.000 title claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0822—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Theoretical Computer Science (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A kind of cipher key service system communicated based on multiple terminals, including central management system and key relay system, central management system is provided with center quantum-key distribution device, session key distribution device, session key management server and quantum key management server;User terminal connects central management system by key relay system, and key key relay system includes key via node, and key via node includes key Relay Server and relaying quantum-key distribution device, and user terminal connects session key management server respectively.Compared with prior art, the present invention is realized by quantum key relay system shares quantum key between central management system and user terminal, then by using mode of the quantum key to session key, by session key distribution to the user terminal for needing to participate in communicating, realize the purpose 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.
Description
Technical field
The present invention relates to safety communication technology field, more particularly to a kind of cipher key service system communicated based on multiple terminals with
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 adjacent nodes, it is impossible on a large scale should
For the occasion of multi-party communication, the development communicated to quantum cryptography causes very big limitation.
The content of the invention
Present invention aims at a kind of cipher key service System and method for communicated based on multiple terminals is provided, to solve existing skill
The netkey generating rate based on QKD is relatively low in art, is difficult to realize the requirement of one-packet key;In addition, being obtained from QKD networks
Key can only be shared between two adjacent nodes, it is impossible to large-scale application is in the occasion of multi-party communication, to quantum cryptography
The development of communication causes the technical bug of very big limitation.
The technical proposal of the invention is realized in this way:
A kind of cipher key service system communicated based on multiple terminals, including:
Central management system, the central management system is provided with can generate the center of shared quantum key with user terminal
Quantum-key distribution device, the session key distribution device that session key can be generated, session key management server and quantum key
Management server;
User terminal, the user terminal connects central management system, the key relaying system by key relay system
System includes key via node, and the key via node includes key Relay Server and relaying quantum-key distribution device, institute
State key Relay Server connection relaying quantum-key distribution device, relaying quantum-key distribution Qi Yu centers quantum key point
Orchestration is connected by quantum channel, and the user terminal connects session key management server respectively.
Preferably, the key relay system is formed by the cascade of some key via nodes.
Preferably, the central management system also includes key storage service device, the key storage service device and quantum
Key Management server connects and is used to store the quantum key shared between user terminal and central management system and session
Key.
Preferably, the session key management server is connected with key storage service device.
Preferably, the user terminal includes voice terminal, video terminal, mail terminal.
Present invention also offers a kind of cipher key service method communicated based on multiple terminals, comprise the following steps:
1) shared quantum key is generated:Pass through adjacent relaying quantum-key distribution device and center quantum-key distribution device
The shared quantum key of generation;
2) shared quantum key is managed:Shared quantum key is synchronized into quantum key management server to be managed
Reason;
3) 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;
4) transmission of session key:When session key is transmitted between central management system and user terminal, by shared
Quantum key transmission is encrypted;
5) session between user terminal:Session key is transmitted by way of shared quantum key encryption to treating session
User terminal, the user terminal obtains session key, you can conversate.
Preferably, level is associated with some key via nodes between user terminal and central management system, wherein, next stage is close
The quantum key that key via node is sent is sent to center by way of the quantum key encryption of upper level key via node
Shared quantum key is generated between management system, with central management system.
Preferably, shared quantum key is included between adjacent relay node, the user of adjacent relay node is connected to
Terminal can obtain these shared quantum keys, for encrypting the data in session.
Preferably, the step 2) in, shared quantum key can be sent to key storage service device and be stored.
Preferably, user terminal includes voice terminal, video terminal, mail terminal in the cipher key service method.
Compared with prior art, the present invention has following beneficial effect:
The cipher key service System and method for communicated based on multiple terminals of the present invention, in being realized by quantum key relay system
Quantum key is shared between heart management system and user terminal, then by using side of the quantum key to session key
Formula, it will words encryption key distribution realizes the purpose of multi-party users terminal communication, the present invention is not to the user terminal for needing to participate in communicating
Only ensure multi-party communication absolute safety, it also avoid requirement of the one-packet key to QKD system high standard.
Brief description of the drawings
The theory diagram for the cipher key service system that Fig. 1 is communicated for the present invention based on multiple terminals;
The structured flowchart for the cipher key service system that Fig. 2 is communicated for the present invention based on multiple terminals;
Fig. 3 is video terminal conversation modes figure in the present invention.
In figure:Central management system 100, center quantum-key distribution device 101, session key distribution device 102, session key
Management server 103, quantum key management server 104, key storage service device 105, user terminal 200, key relaying section
Point 300, key Relay Server 301, relaying quantum-key distribution device 302.
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 and Figure 2, a kind of cipher key service system communicated based on multiple terminals, 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 200
Center quantum-key distribution device 101, the session key distribution device 102 that session key can be generated, the session key management clothes of key
Business device 103 and quantum key management server 104;
User terminal 200, the user terminal 200 connects central management system 100 by key relay system, described close
Key relay system includes key via node 300, and the key via node 300 includes key Relay Server 301 and relaying
Quantum-key distribution device 302, the connection of the key Relay Server 301 relaying quantum-key distribution device 302, the relaying quantum
Key distrbutor 302 is connected with center quantum-key distribution device 101 by quantum channel, and relaying quantum-key distribution device 302 can
The quantum key of generation is sent to center quantum-key distribution device 101 and forms shared quantum key, the user terminal 200
Session key management server 103 is connected respectively, and session key management server is used for create session key distrbutor 102
Session key is sent to each user terminal 200 for needing to be communicated, and session key is whole by the user during transmission
200 corresponding quantum keys are held to be encrypted, it is ensured that the transmission that session key can be safe to each user terminal 200.
The key relay system is cascaded by some key via nodes 300 and formed, and the user terminal 200 is by some
Level key via node 300 connects central management system 100, because single photon occurs not in the transmission of quantum channel middle and long distance
With the decay of degree, then detector detection can be caused less than the situation of single photon, cause quantum key bust this, so using
The mode of multistage key via node 300, quantum key can also be shared to centre management system by making the user terminal 200 of distal end
System 100.
The central management system 100 also includes key storage service device 105, the key storage service device 105 and amount
Sub-key management server 104 is connected and close for storing quantum shared between user terminal 200 and central management system 100
Key and session key.The session key management server 103 is connected with key storage service device 104.The user terminal
Including voice terminal, video terminal, mail terminal.
Present invention also offers a kind of cipher key service method communicated based on multiple terminals, comprise the following steps:
1) shared quantum key is generated:Pass through adjacent relaying quantum-key distribution device 302 and center quantum key point
The shared quantum key of the generation of orchestration 102;
2) shared quantum key is managed:Shared quantum key is synchronized to quantum key management server 104;
3) session key is generated:Session key distribution device 102 in central management system 100 in units of session, according to
The demand of user terminal is that there is provided to the user terminal in session for user's generation session key;
4) transmission of session key:When session key is transmitted between central management system 100 and user terminal 200, lead to
Cross shared quantum key and transmission is encrypted;
5) session between user terminal:Session key is transmitted by way of shared quantum key encryption to treating session
User terminal 200, the user terminal obtains session key, you can conversate.
In addition, level is associated with some key via nodes 300 between user terminal 200 and central management system 100, wherein,
The quantum key that next stage key via node 300 is sent is encrypted by the quantum key of upper level key via node 300
Mode is sent to central management system 100, and shared quantum key is generated between central management system 100.
Due to using fiber direct connection between adjacent two users' terminal, thus between include shared quantum key, this be total to
The quantum key enjoyed is synchronized to central management system 100 by key Relay Server 301, and is arbitrarily connected to adjacent relay
The user terminal 200 of node 300 can obtain these shared quantum keys, for encrypting the data in session.
The step 2) in, shared quantum key can be sent to key storage service device 105 and be stored.
In this method, the user terminal includes voice terminal, video terminal, mail terminal.
As shown in figure 3, being video terminal conversation modes, session request is sent from user terminal A to user terminal B, C, it is first
First, user terminal A, B, C generate shared quantum key with central management system respectively, while central management system is also created that
Session key, central management system is in the way of shared quantum key encrypted session key by session key distribution to corresponding
User terminal A, B or C, now, it is close that user terminal A sends the data to video session by the way of session key data
Key management server, then video session Key Management server send data to user terminal B and C, user terminal B and C
Receive the data of A encryptions, and by session key ciphertext data, multi-party video session just can be carried out, because session key is adopted
It is that each user terminal A, B or C are distributed in quantum key encryption, so session key is perfectly safe, therefore can
To securely achieve multi-party communication.
The cipher key service System and method for communicated based on multiple terminals of the present invention, is obtained each by central management system and used
Family terminal quantum key, then by way of the quantum key is to session key, central management system is close by quantum
Session key is distributed to the user terminal for needing to participate in communication by the mode of key encrypted session key, and packet only needs to session
Key is encrypted, and realizes the purpose of multi-party users terminal communication, and the present invention not only ensures multi-party communication absolute safety, also kept away
Requirement of the one-packet key to QKD system high standard is exempted from, quantum cryptography communication is applied to extensive multi-party communication well
Close.
Claims (10)
1. a kind of cipher key service system communicated based on multiple terminals, it is characterised in that including:
Central management system, the central management system is provided with can generate the center quantum of shared quantum key with user terminal
Key distrbutor, the session key distribution device that session key can be generated, session key management server and quantum key management
Server;
User terminal, the user terminal connects central management system, the key relay system bag by key relay system
Key via node is included, the key via node includes key Relay Server and relaying quantum-key distribution device, described close
Key Relay Server connection relaying quantum-key distribution device, relaying quantum-key distribution Qi Yu centers quantum-key distribution device
Connected by quantum channel, the user terminal connects session key management server respectively.
2. the cipher key service system as claimed in claim 1 communicated based on multiple terminals, it is characterised in that the key relaying system
System is formed by the cascade of some key via nodes.
3. the cipher key service system as claimed in claim 2 communicated based on multiple terminals, it is characterised in that the centre management system
System also includes key storage service device, and the key storage service device is connected with quantum key management server and is used to store and uses
The quantum key and session key shared between family terminal and central management system.
4. the cipher key service system as claimed in claim 3 communicated based on multiple terminals, it is characterised in that the session key pipe
Reason server is connected with key storage service device.
5. the cipher key service system communicated based on multiple terminals as described in any in claim 1-4, it is characterised in that the use
Family terminal includes voice terminal, video terminal, mail terminal.
6. a kind of cipher key service method communicated based on multiple terminals based on any one of claim 1-5, it is characterised in that bag
Include following steps:
1) shared quantum key is generated:Generated by adjacent relaying quantum-key distribution device and center quantum-key distribution device
Shared quantum key;
2) shared quantum key is managed:Shared quantum key is synchronized into quantum key management server to be managed;
3) 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;
4) 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;
5) session between user terminal:Session key is transmitted to the user for treating session by way of shared quantum key encryption
Terminal, the user terminal obtains session key, you can conversate.
7. the cipher key service method as claimed in claim 6 communicated based on multiple terminals, it is characterised in that user terminal and center
Level is associated with some key via nodes between management system, wherein, the quantum key that next stage key via node is sent passes through
The mode of the quantum key encryption of upper level key via node is sent to central management system, raw between central management system
Into shared quantum key.
8. the cipher key service method communicated based on multiple terminals as claimed in claim 6, it is characterised in that adjacent relay node it
Between include shared quantum key, being connected to the user terminal of adjacent relay node, can to obtain these shared quantum close
Key, for encrypting the data in session.
9. the cipher key service method as claimed in claim 8 communicated based on multiple terminals, it is characterised in that the step 2) in,
Shared quantum key can be sent to key storage service device and be stored.
10. the cipher key service method as claimed in claim 9 communicated based on multiple terminals, it is characterised in that the user terminal
Including voice terminal, video terminal, mail terminal.
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108259168A (en) * | 2018-01-02 | 2018-07-06 | 中南大学 | The implementation method of complex topology netkey distribution system based on relay station |
CN109951381A (en) * | 2019-04-24 | 2019-06-28 | 长春大学 | A kind of mail security transmission method based on the public cloud service platform of quantum key |
WO2019128785A1 (en) * | 2017-12-29 | 2019-07-04 | 成都零光量子科技有限公司 | Quantum key relay method |
WO2019128753A1 (en) * | 2017-12-29 | 2019-07-04 | 成都零光量子科技有限公司 | Quantum key mobile service method with low delay |
CN111371551A (en) * | 2020-03-12 | 2020-07-03 | 占梓妍 | Quantum key synchronous relay device |
CN111404950A (en) * | 2020-03-23 | 2020-07-10 | 腾讯科技(深圳)有限公司 | Information sharing method and device based on block chain network and related equipment |
CN111865585A (en) * | 2020-07-27 | 2020-10-30 | 江苏亨通问天量子信息研究院有限公司 | Quantum mobile terminal communication system, key distribution method and communication method |
CN112887086A (en) * | 2021-01-19 | 2021-06-01 | 北京邮电大学 | Quantum key synchronization method and system |
CN113489586A (en) * | 2021-07-26 | 2021-10-08 | 河南国科量子通信网络有限公司 | VPN network system compatible with quantum key negotiation |
CN117176345A (en) * | 2023-10-31 | 2023-12-05 | 中电信量子科技有限公司 | Quantum cryptography network key relay dynamic routing method, device and system |
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Cited By (16)
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WO2019128785A1 (en) * | 2017-12-29 | 2019-07-04 | 成都零光量子科技有限公司 | Quantum key relay method |
WO2019128753A1 (en) * | 2017-12-29 | 2019-07-04 | 成都零光量子科技有限公司 | Quantum key mobile service method with low delay |
CN108259168A (en) * | 2018-01-02 | 2018-07-06 | 中南大学 | The implementation method of complex topology netkey distribution system based on relay station |
CN108259168B (en) * | 2018-01-02 | 2020-12-01 | 中南大学 | Method for realizing complex topology network key distribution system based on relay station |
CN109951381A (en) * | 2019-04-24 | 2019-06-28 | 长春大学 | A kind of mail security transmission method based on the public cloud service platform of quantum key |
CN111371551A (en) * | 2020-03-12 | 2020-07-03 | 占梓妍 | Quantum key synchronous relay device |
CN111404950B (en) * | 2020-03-23 | 2021-12-10 | 腾讯科技(深圳)有限公司 | Information sharing method and device based on block chain network and related equipment |
CN111404950A (en) * | 2020-03-23 | 2020-07-10 | 腾讯科技(深圳)有限公司 | Information sharing method and device based on block chain network and related equipment |
CN111865585B (en) * | 2020-07-27 | 2022-10-04 | 江苏亨通问天量子信息研究院有限公司 | Quantum mobile terminal communication system, key distribution method and communication method |
CN111865585A (en) * | 2020-07-27 | 2020-10-30 | 江苏亨通问天量子信息研究院有限公司 | Quantum mobile terminal communication system, key distribution method and communication method |
CN112887086A (en) * | 2021-01-19 | 2021-06-01 | 北京邮电大学 | Quantum key synchronization method and system |
CN112887086B (en) * | 2021-01-19 | 2022-07-22 | 北京邮电大学 | Quantum key synchronization method and system |
CN113489586A (en) * | 2021-07-26 | 2021-10-08 | 河南国科量子通信网络有限公司 | VPN network system compatible with quantum key negotiation |
CN113489586B (en) * | 2021-07-26 | 2023-01-31 | 河南国科量子通信网络有限公司 | VPN network system compatible with quantum key negotiation |
CN117176345A (en) * | 2023-10-31 | 2023-12-05 | 中电信量子科技有限公司 | Quantum cryptography network key relay dynamic routing method, device and system |
CN117176345B (en) * | 2023-10-31 | 2024-01-09 | 中电信量子科技有限公司 | Quantum cryptography network key relay dynamic routing method, device and system |
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Inventor after: Zhu Bin Inventor after: Zhao Yibo Inventor after: Jiang Haitao Inventor before: Zhu Bin Inventor before: Zhao Yibo |
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Application publication date: 20170908 |