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 PDF

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Publication number
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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China
Prior art keywords
key
quantum
session
user terminal
management system
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CN201710405969.0A
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Chinese (zh)
Inventor
朱斌
赵义博
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Zhejiang Kyushu Quantum Information Technology Ltd By Share Ltd
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Zhejiang Kyushu Quantum Information Technology Ltd By Share Ltd
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Priority to CN201710405969.0A priority Critical patent/CN107147492A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0852Quantum cryptography
    • H04L9/0855Quantum cryptography involving additional nodes, e.g. quantum relays, repeaters, intermediate nodes or remote nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819Key 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)
    • H04L9/0822Key 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

A kind of cipher key service System and method for communicated based on multiple terminals
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.
CN201710405969.0A 2017-06-01 2017-06-01 A kind of cipher key service System and method for communicated based on multiple terminals Pending CN107147492A (en)

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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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CN105471576A (en) * 2015-12-28 2016-04-06 科大国盾量子技术股份有限公司 Quantum key relaying method, quantum terminal nodes and quantum key relaying system
US20160127127A1 (en) * 2013-06-08 2016-05-05 Quantumctek Co., Ltd. Mobile secret communications method based on quantum key distribution network

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CN104780040A (en) * 2015-04-06 2015-07-15 安徽问天量子科技股份有限公司 Handheld device encryption method and system based on quantum cryptography
CN105471576A (en) * 2015-12-28 2016-04-06 科大国盾量子技术股份有限公司 Quantum key relaying method, quantum terminal nodes and quantum key relaying system

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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Application publication date: 20170908