CN212211022U - Rail transit signal system based on quantum encryption - Google Patents
Rail transit signal system based on quantum encryption Download PDFInfo
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- CN212211022U CN212211022U CN202021164278.XU CN202021164278U CN212211022U CN 212211022 U CN212211022 U CN 212211022U CN 202021164278 U CN202021164278 U CN 202021164278U CN 212211022 U CN212211022 U CN 212211022U
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Abstract
The utility model discloses a track traffic signal system based on quantum is encrypted, track traffic signal system's data communication subsystem's both ends all are provided with communication terminal, the business router, router and quantum key distribution terminal are encrypted to the quantum, two quantum key distribution terminals are connected through an optic fibre, communication terminal and business router, the router is encrypted with the quantum to the business router, the equal communication connection in router and quantum key distribution terminal is encrypted to the quantum, two business routers are also communication connection. The utility model discloses a track traffic signal system and communication method based on quantum is encrypted has solved among the track traffic signal system control data transmission process and has not encrypted or adopt the secret key that traditional encryption technique exists to be cracked easily and the technical problem who attacks, has used and has not stolen successful quantum technique and has come transmission secret key, has ensured the high security of business data among the signal system.
Description
Technical Field
The utility model relates to a track traffic signal system based on quantum is encrypted belongs to track traffic signal control field, and more specifically says, mainly guarantees the high security of business data transmission in train operation control system, not broken and solve, do not receive malicious attack etc.. Compared with the traditional technology, the transmission process of the train control safety information has higher integrity, confidentiality and non-repudiation, thereby ensuring that the whole signal system is more reliable and safer.
Background
In the field of rail transit, the information transmission is of a wide variety and includes both secure and non-secure data. In the currently opened or established rail transit signal system, part of lines do not adopt any encryption protection for train operation control data communication, and part of lines adopt a conventional encryption mode, but a classical password encryption algorithm does not belong to an 'absolute safety' communication system. Because the rail transit relates to daily trips of millions of ordinary people, becomes an integral part of urban operation, and has higher and higher requirements on the safety of a signal system, the network safety problem of a communication system bearing service data of the rail transit needs to be well solved.
Disclosure of Invention
The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide a track traffic signal system based on quantum is encrypted.
The utility model discloses a track traffic signal system based on quantum is encrypted, including setting up in the first communication terminal, first business router, the first quantum of track traffic signal system's data communication subsystem one end encrypt router and first quantum key distribution terminal to and set up in the second communication terminal, second business router, the second quantum of the other end of data communication subsystem and encrypt router and second quantum key distribution terminal; the method is characterized in that: the first quantum key distribution terminal is connected with the second quantum key distribution terminal through a quantum tunnel formed by an optical fiber, and the quantum key distribution terminal is used for generating a quantum and forming a quantum key through measurement; the first quantum key distribution terminal is in communication connection with the first quantum encryption router, and the second quantum key distribution terminal is in communication connection with the second quantum encryption router so as to realize transmission of the quantum keys;
the first communication terminal is in communication connection with the first service router, and the second communication terminal is in communication connection with the second service router so as to realize transmission of service data; the first business router is in communication connection with the first quantum encryption router, the second business router is in communication connection with the second quantum encryption router so as to realize transmission of business data and encrypted business data, and the quantum encryption router realizes encryption and decryption of the data; and the first service router is in communication connection with the second service router so as to realize the transmission of the encrypted service data.
The utility model has the advantages that: the utility model discloses a track traffic signal system based on quantum encryption, a quantum key distribution terminal transmits the key to another quantum key distribution terminal through a pair of quantum that entangles, it forms the quantum key and gives corresponding quantum encryption route passageway through measuring, carry out quantum key encryption to business data by quantum encryption route passageway, the business data of encryption is transmitted to another business route by a business route, then decrypt the business data of encryption through corresponding quantum encryption route, restore to the business data, just so realized two communication terminal communication under the quantum encryption, solved the technical problem that the key that control data transmission process did not encrypt or adopted traditional encryption technique to exist among the track traffic signal system is cracked easily and attacked, the quantum technique that can not steal successfully is used to transmit the key, high security of traffic data in the signalling system is ensured.
Simultaneously: (1) the utility model discloses a track traffic signal system based on quantum is encrypted adopts the symmetric encryption technique of quantum key, and the encryption algorithm is about 1500 times faster than asymmetric encryption algorithm, the effectual real-time of control data transmission process in the track traffic signal system of having guaranteed.
(2) The utility model discloses a track traffic signal system based on quantum is encrypted, the quantum of adoption encrypt router and the detached design of business router, an effectual compatibility that has increased different signal system equipment, can all adopt similar mode to carry out the quantum and encrypt the communication between the equipment of difference. And the redundancy degree of equipment communication between signal systems is increased.
(3) The utility model discloses a track traffic signal system based on quantum is encrypted, the quantum key distribution equipment of adoption generates the key with certain speed in real time to reduce the validity period of key, improve the security of encryption process.
Drawings
Fig. 1 is a schematic diagram of a system structure of a rail transit signal system based on quantum encryption according to the present invention;
fig. 2 is a schematic flow chart of the communication method of the rail transit signal system based on quantum encryption of the present invention.
In the figure: 10 a first communication terminal, 11 a second communication terminal, 20 a first traffic router, 21 a second traffic router, 30 a first quantum encryption router, 31 a second quantum encryption router, 40 a first quantum key distribution terminal, 41 a second quantum key distribution terminal; 101, 102, 103, a quantum key; 201 encrypted tunnel, 202 quantum tunnel.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
And the data communication subsystem in the rail transit signal system is responsible for completing the real-time transmission function of train operation control information. The existing system is not encrypted or the encryption technology is lagged behind, so that hidden dangers such as cracking, peeping, intrusion, modification and damage exist in the transmission process of train operation control information, and the normal, reliable and safe operation of a rail transit system is threatened. Therefore, it is very necessary to perform encryption protection before the train operation control safety information enters the communication network for transmission.
As shown in fig. 1, the system structure schematic diagram of the rail transit signal system based on quantum encryption of the present invention is given, for the data communication subsystem of the rail transit signal system, one end of its communication is provided with the first communication terminal 10, the first service router 20, the first quantum encryption router 30 and the first quantum key distribution terminal 40, and the other end is provided with the second communication terminal 11, the second service router 21, the second quantum encryption router 31 and the second quantum key distribution terminal 41, so as to achieve the security of the service data 101 transmitted by the first communication terminal 10 and the second communication terminal 11, so that the service data cannot be stolen, cracked, peeped, invaded, modified and destroyed, etc., to ensure the security of the rail transit control information and achieve the safe operation of the train.
The communication terminals (10, 11) are terminal equipment for transmitting and receiving safety control signals in a rail transit signal control system; the service routers (20, 21) realize the data forwarding between the communication terminals (10, 11) and the quantum encryption routers (30, 31) and between the two service routers (20, 21); the quantum encryption routers (30, 31) are responsible for encrypting and decrypting data sent by the service routers (20, 21); the quantum key distribution terminal (40, 41) is responsible for quantum generation and quantum key formation by measurement, and performs quantum key management and sends the quantum key to the quantum encryption router.
The illustrated traffic data 101 is communication data which is transmitted from communication terminals (10, 11) and has not been subjected to secure encryption, the encrypted traffic data 102 is communication data which is encrypted by quantum encryption routers (30, 31), and the quantum key 103 is a quantum key which is formed by measuring and processing a quantum generated by a quantum key distribution terminal (40, 41). The quantum tunnel 202 is a direct connection optical fiber channel established between the first quantum key distribution terminal and the second quantum key distribution terminal 41, and is used for transmitting quantum information. The encryption tunnel 201 shown is a VPN tunnel for communication established between the first quantum encryption router 30 and the second quantum encryption router 31, and the encryption tunnel 201 is formed by transmitting encrypted data from the quantum encryption routers (30, 31) to the traffic routers (20, 21), forwarding the encrypted data between the two traffic routers (20, 21), and finally forwarding the encrypted data to the quantum encryption routers (31, 30) through a connection between the two traffic routers (20, 21).
As shown in fig. 2, the flow chart of the communication method of the rail transit signal system based on quantum encryption of the present invention is shown, and the method is implemented through the following steps:
the method comprises the following steps: the first quantum distribution key terminal (40) transmits the key to the second quantum distribution key terminal (41) through a pair of entangled quanta;
step two: the first quantum distribution key terminal (40) distributes the measured quantum key (103) to the first quantum encryption router (30);
step three: the second quantum key distribution terminal (41) distributes the measured quantum key (103) to the second quantum encryption router (31);
step IV: the first communication terminal (10) transmits the service data (101) to the first service router (20);
step five: the first service router (20) sends the received service data (101) to the first quantum encryption router (30);
step (c): a first quantum encryption router (30) encrypts received service data (101) through a quantum key (103) to form encrypted service data (102); and transmitting the encrypted traffic data to the first traffic router (20);
step (c): the first traffic router (20) sending the received encrypted traffic data (102) to the second traffic router (21);
step (v): the second service router (21) sends the received encrypted service data (102) to the second quantum encryption router (31); after receiving the encrypted service data (102), the second quantum encryption router (31) decrypts the encrypted service data (102) by using the quantum key to restore the encrypted service data (102) to service data (101);
step ninthly: the second quantum encryption router (31) sends the decrypted and restored service data (101) to the second service router (21);
step (r): the second service router (21) forwards the service data (101) to the second communication terminal, so that the transmission of the service data (101) from the first communication terminal (10) to the second communication terminal (11) is realized;
similarly, the transmission of the service data (101) from the second communication terminal (11) to the first communication terminal (10) can be realized by the same method as in steps r to r.
The first quantum key distribution terminal (40) or the second quantum key distribution terminal (41) generates the keys in real time at a certain period, so that the validity period of the keys is shortened, and the security of the encryption process is improved.
It can be seen that, the utility model discloses a track traffic signal system based on quantum is encrypted deploys two sets of quantum encryption professional equipment that have encryption/decryption function between two safety control sub-networks that carry out intercommunication, uses symmetric encryption technique to encrypt data, directly links an equipment terminal that has the production quantum key separately on encryption equipment simultaneously. Two terminal devices generating the quantum secret keys are directly connected through optical fibers, the secret keys are transmitted through a pair of entangled quanta, the pair of entangled quanta has the characteristic that when one is changed, the other is also randomly changed, and therefore when the entangled quanta are acquired by a hacker, the terminal generating the quantum secret keys can be changed immediately. Therefore, data transmission is carried out again to ensure the security of communication encryption, and the characteristic that the secret key is easy to obtain in the symmetric encryption process is effectively avoided by using the quantum encryption mode, so that the symmetric encryption has higher encryption level.
By encrypting the data packet after the authentication process, the data packet can be securely transmitted to the destination network in the data communication network. The encryption equipment of the two communication parties can obtain the secret key through the terminal equipment which generates the quantum secret key. Therefore, the purpose of safe transmission is achieved.
Claims (1)
1. A rail transit signal system based on quantum encryption comprises a first communication terminal (10), a first service router (20), a first quantum encryption router (30) and a first quantum key distribution terminal (40) which are arranged at one end of a data communication subsystem of the rail transit signal system, and a second communication terminal (11), a second service router (21), a second quantum encryption router (31) and a second quantum key distribution terminal (41) which are arranged at the other end of the data communication subsystem; the method is characterized in that: the first quantum key distribution terminal and the second quantum key distribution terminal are connected through a quantum tunnel (202) formed by one optical fiber, and the quantum key distribution terminals (40, 41) are used for generating quanta and forming a quantum key (103) through measurement; the first quantum key distribution terminal is in communication connection with the first quantum encryption router, and the second quantum key distribution terminal is in communication connection with the second quantum encryption router so as to realize transmission of the quantum keys;
the first communication terminal is in communication connection with the first service router, and the second communication terminal is in communication connection with the second service router so as to realize transmission of service data (101); the first business router is in communication connection with the first quantum encryption router, the second business router is in communication connection with the second quantum encryption router so as to realize transmission of business data (101) and encrypted business data (102), and the quantum encryption routers (30 and 31) realize encryption and decryption of the data; the first traffic router is communicatively coupled to a second traffic router to enable transmission of encrypted traffic data (102).
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| CN202021164278.XU CN212211022U (en) | 2020-06-22 | 2020-06-22 | Rail transit signal system based on quantum encryption |
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| CN202021164278.XU CN212211022U (en) | 2020-06-22 | 2020-06-22 | Rail transit signal system based on quantum encryption |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111669274A (en) * | 2020-06-22 | 2020-09-15 | 山东鼎讯富欣轨道交通***技术有限公司 | Rail transit signal system based on quantum encryption and communication method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111669274A (en) * | 2020-06-22 | 2020-09-15 | 山东鼎讯富欣轨道交通***技术有限公司 | Rail transit signal system based on quantum encryption and communication method |
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