CN105142137A - System and method for configuring train-ground wireless communication authentication key of urban mass transit system - Google Patents
System and method for configuring train-ground wireless communication authentication key of urban mass transit system Download PDFInfo
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- CN105142137A CN105142137A CN201510445995.7A CN201510445995A CN105142137A CN 105142137 A CN105142137 A CN 105142137A CN 201510445995 A CN201510445995 A CN 201510445995A CN 105142137 A CN105142137 A CN 105142137A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/02—Standardisation; Integration
- H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
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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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
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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)
- H04L9/083—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) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a system and a method for configuring a train-ground wireless communication authentication key of an urban mass transit system. The method comprises the flowing steps: a key generation step, generating a wireless authentication key with a certain format in a certain manner; a storage step, encrypting the wireless authentication key generated in the key generation step by an encryption algorithm, storing the wireless authentication key in a form of a ciphertext and storing internet protocol (IP) addresses of on-board and ground wireless communication equipment in a train-ground wireless communication network of the urban mass transit; and a key configuration step, connecting the train-ground wireless communication network of the urban mass transit through an Ethernet interface for configuring the wireless authentication key into the on-board and ground wireless communication equipment of a train and the ground wireless communication equipment close to an orbit. Through updating and reconfiguring the wireless communication authentication key, the authentication key can be prevented from being leaked or being broken; and safe operation of the urban mass transit is ensured.
Description
Technical field
The present invention relates to the field of information security technology of industrial control system, be specifically related to a kind of vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system and method.
Background technology
In the information security and control technology of urban track traffic, generally adopt communication-based train control system (CommunicationBasedTrainControl, CBTC), video monitoring system (ClosedCircuitTelevision, and the urban track traffic production system of passenger information system (PassengerInformationSystem, PIS) CCTV); Wherein:
CBTC system mainly completes the controlling functions to vehicle safe driving, and CCTV system is then for uploading the image in train in real time, and PIS system is used for issuing passenger's notice and operation information when road network exception.
The vehicle-ground wireless communication of current CBTC system, CCTV system and PIS system mainly adopts the wireless local area network technology being operated in 2.4GHz frequency range, its cipher mode mainly comprises WEP (WiredEquivalentPrivacy, Wired Equivalent encrypt), TKIP (TemporalKeyIntegrityProtocol, Transient Key integrated protocol) and AES (AdvancedEncryptionStandard, Advanced Encryption Standard) etc.;
When train and network associate, wireless access authentication mode mainly contains shared key authentication and PSK (Pre-SharedKey, shared key in advance) certification two kinds, above-mentioned two kinds of authentication modes by configuring identical authenticate key in the ground network and in-vehicle wireless device of urban track traffic, if key is identical when train access network, by certification, otherwise not by certification; When needs reconfigure urban track traffic wireless authentication key, must configure at the wireless terminal of terrestrial wireless network and all trains all simultaneously, if otherwise a certain train does not reconfigure authenticate key, then and can not access network.
Due to the authenticate key rich reconfigure process loaded down with trivial details and need be equipped with specialty personnel just can carry out, if the authenticate key of current urban track traffic is by the configuration and forever constant when debugging of equipment supplier or integrator, obviously just there is the risk or hidden danger of leaking or being cracked in this.Once authenticate key leaks or is cracked, hacker just can enter into CBTC, CCTV and/or PIS system of urban track traffic, and attacking network causes train to stop in emergency and even collides, and has a strong impact on safety of urban transit operation.
Summary of the invention
In view of this, the invention provides a kind of vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system and method, be intended to the flexibility and the fail safe that improve cipher key configuration.
The technical solution used in the present invention is specially:
A kind of vehicle-ground wireless communication of urban railway transport system authenticate key collocation method, comprises the following steps:
Secret generating step, for producing the wireless authentication key of certain format by certain mode;
Storing step, the wireless authentication key for described secret generating step being produced stores with the form of ciphertext after adopting cryptographic algorithm encryption, and the vehicle-mounted IP address with terrestrial wireless communication equipment in the vehicle-ground wireless communication network preserving urban track traffic;
Cipher key configuration step, is connected with the vehicle-ground wireless communication network of urban track traffic by Ethernet interface, for by the in-vehicle wireless communications device of wireless authentication cipher key configuration to train and the terrestrial wireless communication equipment of trackside.
In above-mentioned vehicle-ground wireless communication of urban railway transport system authenticate key collocation method, in described secret generating step, the mode producing wireless authentication key is: produce wireless authentication key or wireless authentication key entered from the keyboard by randomizer.
In above-mentioned vehicle-ground wireless communication of urban railway transport system authenticate key collocation method, described cipher key configuration step is specially: adopt SNMP or Telnet agreement by the wireless authentication cipher key configuration of generation in the in-vehicle wireless communications device of train, read authenticate key, and compare with the authenticate key of the storage in storing step, if authenticate key configuration is correct, after then restarting in-vehicle wireless device, namely wireless authentication key comes into force; Otherwise reconfigure wireless authentication key;
After the wireless authentication key of in-vehicle wireless communications device comes into force, in the same way, by the terrestrial wireless equipment of wireless authentication cipher key configuration to trackside.
In above-mentioned vehicle-ground wireless communication of urban railway transport system authenticate key collocation method, periodically produce wireless authentication key, and adopt periodic polling mode to write in-vehicle wireless communications device and terrestrial wireless equipment successively, reconfigure wireless authentication key.
In above-mentioned vehicle-ground wireless communication of urban railway transport system authenticate key collocation method, when wireless authentication key exposure, produce and reconfigure wireless authentication key.
A kind of vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system, comprising:
Key production module, for generation of wireless authentication key;
Memory module, after adopting cryptographic algorithm encryption, stores with the form of ciphertext for the wireless authentication key that described key production module produced, and the vehicle-mounted IP address with terrestrial wireless communication equipment in the vehicle-ground wireless communication network preserving urban track traffic;
Cipher key configuration module, is connected with the vehicle-ground wireless communication network of urban track traffic by Ethernet interface, for by the in-vehicle wireless communications device of wireless authentication cipher key configuration to train and the terrestrial wireless communication equipment of trackside.
In above-mentioned vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system, the mode of described generation wireless authentication key is produce wireless authentication key or wireless authentication key entered from the keyboard by randomizer.
In above-mentioned vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system, cipher key configuration module adopts SNMP or Telnet agreement by after wireless authentication cipher key configuration to all in-vehicle wireless devices, equally wireless authentication cipher key configuration to all terrestrial wireless equipment.
The beneficial effect that the present invention produces is:
Authenticate key, by producing authenticate key with randomizer or in the mode of input through keyboard authenticate key, is then configured in all in-vehicle wireless devices and terrestrial wireless equipment by vehicle-ground wireless communication network by wireless authentication cipher key configuration method of the present invention successively.By reconfiguring urban track traffic vehicle-ground wireless communication authenticate key, effectively prevent hacker after changeless key is cracked and may invade vehicle-ground wireless communication network, make the risk that authenticate key leaks or is cracked, enhance the fail safe of information, and then ensure that the safe operation of urban track traffic.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, more completely the present invention can be understood better.Accompanying drawing described herein is used to provide a further understanding of the present invention, and embodiment and explanation thereof, for explaining the present invention, do not form inappropriate limitation of the present invention.
Fig. 1 is the flow chart of a kind of vehicle-ground wireless communication of urban railway transport system authenticate key of the present invention collocation method;
Fig. 2 is the structural representation of a kind of vehicle-ground wireless communication of urban railway transport system authenticate key of the present invention configuration-system;
Fig. 3 is the schematic network structure that City Rail Transit System wireless authentication cipher key configuration system of the present invention is connected with CBTC system.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
A kind of vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system as shown in Figure 2, mainly comprises:
Key production module, is produced by randomizer or keyboard manual input wireless authentication key, and the authenticate key of generation is sent to memory module preservation;
Memory module, for preserving wireless authentication key, for inquiring about to user and being supplied to cipher key configuration module, preferred as one, authenticate key is preserved with the form of ciphertext after being encrypted key by cryptographic algorithm, reads to prevent unauthorized user; Also preserve the IP address of all cars, ground wireless communication equipment, for identifying ground and in-vehicle wireless device simultaneously;
Cipher key configuration module, is connected with memory module, is connected with the vehicle-ground wireless communication network of urban track traffic by Ethernet interface, for by the in-vehicle wireless communications device of wireless authentication cipher key configuration to train and the terrestrial wireless communication equipment of trackside.
The collocation method of above-mentioned wireless authentication cipher key configuration system as shown in Figure 1, mainly comprises the steps:
The generation step of S1, wireless authentication key:
Two kinds of situations are had to need to regenerate new wireless authentication key, particularly:
Be the authenticate key that periodic replacement is new under normal circumstances, the cycle is preferably the integral multiple of 24 hours, as one day, a week or one month regular update authenticate key; If but period occurs, if wireless authentication key exposure is to after the network management personnel of non-our unit use, also must change key.
The generating mode of wireless authentication key has two kinds, particularly:
If network manager thinks that oneself arranges authenticate key, then input key by him by keyboard is manual, after then key being encrypted, be saved to memory cell; Also can be produced by randomizer, then adopt the cryptographic algorithm such as DES, 3DES, AES to be encrypted rear preservation by memory module to key.
Preferred as one, manual authenticate key length at least 8 that is that input or that utilize randomizer to produce, and comprise letter and number simultaneously.
S2, after urban railway transit train stops operation getting back to rolling stock section or parking lot at night, start cipher key configuration module, because all vehicle-mounted and IP addresses that is Ground Vehicle ground wireless communication equipment have been pre-set in cipher key configuration, therefore first cipher key configuration module reads the IP address of the in-vehicle wireless communications device in memory module, obtain the quantity of in-vehicle wireless communications device and the IP of correspondence thereof on circuit, cipher key configuration module adopts snmp protocol or Telnet agreement that wireless authentication key is written to all in-vehicle wireless communications devices, during write authenticate key, write successively by the mode of periodically poll in-vehicle wireless device, as 10 milliseconds of writes, 1 in-vehicle wireless communications device.
After wireless authentication key write in-vehicle wireless communications device, then read out and compared with the authenticate key in memory module, correct to confirm key write, if a certain in-vehicle wireless device key write is incorrect, need again to write.
After in-vehicle wireless device authenticate key is correctly configured to, cipher key configuration module sending controling instruction restarts by in-vehicle wireless communications device.The authenticate key restarting rear configuration comes into force, and now car, ground wireless communication interrupt.
S3, wireless authentication cipher key configuration to the in-vehicle wireless communications device of all trains must be guaranteed after, could authenticate key be configured in the terrestrial wireless communication equipment of trackside, if otherwise authenticate key is configured to a certain in-vehicle wireless communications device in ground communication facilities does not configure, the then communication disruption on this in-vehicle wireless communications device and ground, automatically authenticate key can not be configured, now can only ON TRAINS by human configuration.
To the mode of terrestrial wireless communication Equipments Setting key and S2 similar, cipher key configuration module reads the IP address of all terrestrial wireless communication equipment in memory module, thus obtaining quantity and the IP thereof of circuit upper ground surface Wireless Telecom Equipment, cipher key configuration module adopts snmp protocol or Telent agreement that wireless authentication key is written to all terrestrial wireless communication equipment.During write authenticate key, write successively by the mode of periodically poll terrestrial wireless communication equipment, as 10 milliseconds of write 1 tread Wireless Telecom Equipments.
Similarly, after wireless authentication key write terrestrial wireless communication equipment, then read out and compare with the authenticate key in memory module, correct to confirm key write.If a certain tread Wireless Telecom Equipment key write is incorrect, need again to write.After guaranteeing that the wireless authentication key of terrestrial wireless communication equipment correctly writes, cipher key configuration module adopts snmp protocol or Telnet agreement sending controling instruction to restart by terrestrial wireless communication equipment, the authenticate key restarting rear configuration comes into force, and now vehicle-ground wireless communication recovers.
The connection of wireless authentication cipher key configuration system of the present invention and CBTC system as shown in Figure 3, when train orbits, be arranged in trackside AP (AccessPoint, WAP (wireless access point)) carry out two-way data communication with train, connected by the network switch between each AP, in the vehicle-ground wireless communication of CBTC system, train there are two independently onboard wireless transceivers, these two wireless transmitting-receiving equipments are placed in headstock and the tailstock respectively, for headstock wireless device and tailstock wireless device, corresponding with the trackside respectively wireless transmitting-receiving equipments of onboard wireless transceiver communicates.Trackside two is overlapped wireless transmitting-receiving equipments and is sent to the data information content of in-vehicle wireless device identical, and after onboard wireless transceiver receives data message, onboard control device only selects wherein a kind of correct information to process.
What suppose the headstock wireless device access of train in the present embodiment is dotted line net, what tailstock wireless device accessed is solid line net, dotted line net and solid line net are isolated completely physically, and wireless authentication cipher key configuration device is connected with two real-time performance by Ethernet interface simultaneously.
Below explain embodiments of the invention by reference to the accompanying drawings, accompanying drawing is herein used to provide a further understanding of the present invention.Obviously; the foregoing is only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; any be to one skilled in the art can expect easily, do not depart from change of the present invention or replacement in fact, be also all included within protection scope of the present invention.
Claims (8)
1. a vehicle-ground wireless communication of urban railway transport system authenticate key collocation method, is characterized in that, comprises the following steps:
Secret generating step, for producing the wireless authentication key of certain format by certain mode;
Storing step, the wireless authentication key for described secret generating step being produced stores with the form of ciphertext after adopting cryptographic algorithm encryption, and the vehicle-mounted IP address with terrestrial wireless communication equipment in the vehicle-ground wireless communication network preserving urban track traffic;
Cipher key configuration step, is connected with the vehicle-ground wireless communication network of urban track traffic by Ethernet interface, for by the in-vehicle wireless communications device of wireless authentication cipher key configuration to train and the terrestrial wireless communication equipment of trackside.
2. vehicle-ground wireless communication of urban railway transport system authenticate key collocation method according to claim 1, it is characterized in that, in described secret generating step, the mode producing wireless authentication key is: produce wireless authentication key or wireless authentication key entered from the keyboard by randomizer.
3. vehicle-ground wireless communication of urban railway transport system authenticate key collocation method according to claim 1, is characterized in that, described cipher key configuration step is specially:
Adopt SNMP or Telnet agreement by the wireless authentication cipher key configuration of generation in the in-vehicle wireless communications device of train, read authenticate key, and compare with the authenticate key of the storage in storing step, if authenticate key configuration is correct, after then restarting in-vehicle wireless device, namely wireless authentication key comes into force; Otherwise reconfigure wireless authentication key;
After the wireless authentication key of in-vehicle wireless communications device comes into force, in the same way, by the terrestrial wireless equipment of wireless authentication cipher key configuration to trackside.
4. vehicle-ground wireless communication of urban railway transport system authenticate key collocation method according to claim 1, it is characterized in that, periodically produce wireless authentication key, and adopt periodic polling mode to write in-vehicle wireless communications device and terrestrial wireless equipment successively, reconfigure wireless authentication key.
5. vehicle-ground wireless communication of urban railway transport system authenticate key collocation method according to claim 4, is characterized in that, when wireless authentication key exposure, produces and reconfigures wireless authentication key.
6. a vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system, is characterized in that, comprising:
Key production module, for generation of wireless authentication key;
Memory module, for after the wireless authentication secret key encryption that described key production module produced, stores with the form of ciphertext, and the IP address of vehicle-mounted and terrestrial wireless communication equipment in the vehicle-ground wireless communication network preserving urban track traffic;
Cipher key configuration module, is connected with the vehicle-ground wireless communication network of urban track traffic by Ethernet interface, for by the in-vehicle wireless communications device of wireless authentication cipher key configuration to train and the terrestrial wireless communication equipment of trackside.
7. vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system according to claim 6, it is characterized in that, the mode of described generation wireless authentication key is produce wireless authentication key or wireless authentication key entered from the keyboard by randomizer.
8. vehicle-ground wireless communication of urban railway transport system authenticate key configuration-system according to claim 6, it is characterized in that, cipher key configuration module adopts SNMP or Telnet agreement by after wireless authentication cipher key configuration to all in-vehicle wireless devices, equally wireless authentication cipher key configuration to all terrestrial wireless equipment.
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| CN201510445995.7A CN105142137B (en) | 2015-07-27 | 2015-07-27 | Vehicle-ground wireless communication of urban railway transport system authentication key configures system and method |
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| CN201510445995.7A CN105142137B (en) | 2015-07-27 | 2015-07-27 | Vehicle-ground wireless communication of urban railway transport system authentication key configures system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105025479A (en) * | 2015-07-27 | 2015-11-04 | 北京交通大学 | Train-ground wireless communication authentication key configuration system and method for urban rail traffic system |
| WO2019076032A1 (en) * | 2017-10-20 | 2019-04-25 | 北京全路通信信号研究设计院集团有限公司 | Method and system for classified storage of keys |
| CN112217818A (en) * | 2020-10-12 | 2021-01-12 | 珠海市鸿瑞信息技术股份有限公司 | Multi-source encryption communication authentication method based on industrial control system |
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| CN105025479A (en) * | 2015-07-27 | 2015-11-04 | 北京交通大学 | Train-ground wireless communication authentication key configuration system and method for urban rail traffic system |
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| WO2019076032A1 (en) * | 2017-10-20 | 2019-04-25 | 北京全路通信信号研究设计院集团有限公司 | Method and system for classified storage of keys |
| CN112217818A (en) * | 2020-10-12 | 2021-01-12 | 珠海市鸿瑞信息技术股份有限公司 | Multi-source encryption communication authentication method based on industrial control system |
| CN112217818B (en) * | 2020-10-12 | 2021-04-20 | 珠海市鸿瑞信息技术股份有限公司 | Multi-source encryption communication authentication method based on industrial control system |
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