CN109587155A - A kind of wireless vehicle brake test macro to ensure information safety - Google Patents
A kind of wireless vehicle brake test macro to ensure information safety Download PDFInfo
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- CN109587155A CN109587155A CN201811535536.8A CN201811535536A CN109587155A CN 109587155 A CN109587155 A CN 109587155A CN 201811535536 A CN201811535536 A CN 201811535536A CN 109587155 A CN109587155 A CN 109587155A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0435—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/06—Answer-back mechanisms or circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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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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- Computer Hardware Design (AREA)
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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of wireless vehicle brake test macros to ensure information safety.Mainly it is made of wireless sensing node, Wi-Fi access point, remote server, live host computer and long-range host computer, the radio network interface of wireless sensing node connects internet by Wi-Fi access point, the sensing data of encryption is transmitted to remote server or broadcast to local area network, remote server stores the sensing data of encryption to database；Live host computer connects local area network, and after authentication, control wireless sensing node carries out the acquisition of sensing data, and obtains and parse the sensing data of encryption；Long-range host computer is by network connection remote server, after authentication, obtains and parse the sensing data of encryption.For the present invention in the case where guaranteeing safety, communication improves the portability of system deployment；Cloud data storage method meets remote data access and testing requirement, improves test and development efficiency.
Description
Technical field
The present invention relates to sensing network safety and the data of measurement and control area acquisition equipment, and in particular to a kind of guarantee information
The wireless vehicle brake test macro of safety.
Background technique
With the raising of industrial manufacturing level, the brakes such as vehicle, high-speed rail require higher and higher.These equipment investments
Preceding needs carry out a large amount of test job.Under limited tester, higher testing efficiency is needed.Currently, test macro
Data transmit the mode for mostly using cable.By the way of cable, the complexity of system deployment is improved.Meanwhile data do not have more
It is uploaded to remote server, tester can not remotely check data, cause test and development efficiency low.Wi-Fi is logical
Letter can preferably solve the problems, such as system deployment complexity, also can directly update sensing data to remote server.And wireless network
Network communication also brings many safety problems, such as DoS attack, leaking data.And the computing capability of sensing node is limited, and it is complicated
Sensing data Encryption Algorithm it is not applicable.
Summary of the invention
The present invention is complicated for the deployment of cable existing for current industrial device test system, can not remotely check, channel radio
Believe unsafe problem, proposes a kind of wireless vehicle brake test macro to ensure information safety.The present invention may be implemented
Safely and fast wireless sensing data are transmitted in wireless vehicle brake, the cloud storage of historical data, to simplify Account Dept
Test and development efficiency improve in administration.
The technical solution adopted by the invention is as follows:
The present invention is mainly by wireless sensing node, Wi-Fi access point, remote server, live host computer and long-range upper
Machine composition, wireless sensing node and Wi-Fi access point are wirelessly connected communication, live host computer and Wi-Fi access point connecting communication,
Remote server and Wi-Fi access point connecting communication, remote server and long-range host computer connecting communication；Wireless sensing node,
Live host computer and Wi-Fi access point set up device manage local area network；Wireless sensing node connects external through signal acquisition interface
Sensor, wireless sensing node acquire the sensing data of external sensor, and encrypt to sensing data；Wireless sensing node
Radio network interface internet is connected by Wi-Fi access point, the sensing data of encryption is transmitted to remote server or wide
Local area network is cast to, remote server stores the sensing data of encryption to database；Live host computer connects local area network, by body
After part verifying, control wireless sensing node carries out the acquisition of sensing data, and obtains and parse the sensing data of encryption；On long-range
Position machine is by network connection remote server, after authentication, obtains and parse the sensing data of encryption.
Connection password need to be inputted when live host computer connection Wi-Fi access point, and could be connected by MAC Address verification,
Block unidentified equipment except local area network by Wi-Fi access point.
The wireless sensing node is provided with UDP network interface, and remote server is provided with UDP and TCP network interface,
Live host computer is provided with UDP network interface；Wireless sensing node opens three UDP network interfaces, first UDP network port
The biography that sensing data through Wi-Fi access point uplink encryption is encrypted to remote server, second UDP network port transmission
Feel the live host computer in data to local area network, the third UDP network port receives the control letter of live host computer in local area network
Number；Remote server opens a UDP network port, and the biography of the encryption from wireless sensing node is received through Wi-Fi access point
Feel data；In addition remote server opens a TCP listening port, and the long-range connection of long-range host computer.
The remote server passes through the verification of account and password to the authentication of long-range host computer, and uses
RSA cryptographic algorithms encrypt account and password；After long-range host computer connection remote server, remote server is the remote of each connection
Journey host computer creates public key.
The wireless sensing node carries out the processing of the symmetric cryptography based on time mask, live host computer to sensing data
The control of wireless sensing node is realized by the rolling-code flow control information based on counter.
In the present invention, the symmetric cryptography specially treated mode based on time mask of wireless sensing node can to collect
Sensing data encrypted safely after transmitted, information security grade is high, and Space-time Complexity is low.
The rolling-code flow control information specially treated mode based on counter of live host computer can make scene upper
Safety of the machine to sensing data acquisition control in wireless sensing node.
The wireless sensing node forms encryption sensing data packet and sends after encrypting to each raw sensory data,
Encryption sensing data packet includes the timestamp positioned at head and multiple encryption sensing datas after timestamp, encryption sensing number
Handle to obtain according to by the symmetric encipherment algorithm binding time stamp based on time mask, specifically using encryption sensing data packet when
Between stab least-significant byte Millisecond time figure as mask and collected raw sensory data progress XOR operation after obtain.
Timestamp changes with the internal system time clock of wireless sensing node and is changed, and realizes dynamic encryption.
Live host computer realizes the control of wireless sensing node by the rolling-code flow control information based on counter,
Specifically: the wireless sensing node and live host computer are internally provided with counter, and counter passes through wireless sensing node
Number and host computer number correspond, after live host computer sends control command to wireless sensing node, wireless sensing node
Counter adds 1, and repeatedly sends confirmation message to live host computer；After live host computer receives confirmation message, scene is upper
Machine counter adds 1, and otherwise, live host computer sends control command again；
The live host computer is sent to wireless sensing node using rolling-code flow control information as control command, rolling
Dynamic password flow control information includes 8 wireless sensing node numbers, 8 live host computer numbers, low 4 of 8 digit counters, 8
Order of the bit number and 8 password streams, high 4, counter do not transmit；8 password stream therein numbered by 8 wireless sensing nodes,
8 host computer numbers, 8 digit counter numerical value and 8 order of the bit number generate, specifically:
1) wireless sensing node number, host computer number, counter values and order number are subjected to XOR operation first
8 original fusion codes are generated, are then iterated processing in the following way；
2) in i-th iteration, the 0th, 1,4,5 of present fusion code generates 1 password by nonlinear function f (a),
Nonlinear function f (a) is a functions for inputting 4 signless integer a, exporting 16 bit binary numbers；
3) combination code is carried out again and rolls update: the 0th of present fusion code the, 2,4,6 progress XOR operation is obtained into operation
As a result, the 1st to 7 of present fusion code is spliced into new combination code, the 1st to 7 conduct of present fusion code with the operation result
The 0th to 6 of new combination code, the 7th as new combination code of the operation result, then using new combination code as present fusion code weight
Return step 2)；
4) constantly repeat the above steps 2)~3) iteration 8 times, 1 cipher code set that step 2) in 8 iterative process is obtained
At 8 password streams.
Wireless sensing node number, host computer number, counter values and the order number carries out XOR operation tool
Body is wireless sensing node number and host computer number, and counter values and order number carry out step-by-step XOR operation respectively and obtain
Two 8 bits, the two 8 bits carry out step-by-step XOR operation again and obtain 8 combination codes.
0th, 2,4,6 progress XOR operation result of present fusion code is specifically: first by the 0th of present fusion code the, 2
It carries out XOR operation and obtains first as a result, the 4th, 6 progress XOR operation of present fusion code obtains second as a result, the first result
XOR operation, which is carried out, with the second result obtains final operation result.
Above-mentioned password stream process mode can help to realize information security, specifically: the generation of upper computer end password stream includes
Two steps.The first step, combining wireless sensing node number, host computer number, counter values and order number generate combination code.Often
A sensor node and each host computer can correspond to a counter；Counter all can be certainly after being successfully transmitted password stream every time
It is dynamic to change；Counter values only transmit low 4, cannot be obtained by packet capturing.The above three promise unpredictability of combination code.
Second step, combination code, which uses nonlinear function again and rolls, updates processing method generation password stream.Password stream is defeated before generation
It is unpredictable to enter parameter (counter values), and is handled by multiple nonlinear functions, there is irregular, unduplicated spy
Property, guarantee higher security level.Wireless sensor ensures the safety of rolling-code flow control information by two steps.Wirelessly
Sensing node judges whether then to be compared rolling-code by Replay Attack from the counter values of rolling-code flow control information
Whether the password stream of flow control information and the password stream itself generated according to rolling-code flow control information are identical come verification information
The identity of sender.
The present invention can be realized the collection in worksite of sensing data, cloud storage and data visualization, can be realized sensing
Data and administrator's password encrypted transmission, the MAC Address management of Wi-Fi access point and the authentication information of host computer guarantee system
System safety.
The beneficial effects of the present invention are:
Test macro of the present invention realizes the wireless transmission to sensing data, PC control order, reduces system deployment
Complexity；Also support sensing data cloud storage, host computer can long-range called data, to realize remote testing
Function.
Meanwhile the present invention realizes the encryption to sensing data and administrator information, and guarantees the safety of control command
Property.
For the present invention in the case where guaranteeing safety, communication improves the portability of system deployment；Cloud data
Storage mode meets remote data access and testing requirement, improves test and development efficiency.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention；
Fig. 2 is wireless sensing node structural block diagram of the invention；
Fig. 3 is remote server structural block diagram of the invention；
Fig. 4 is host computer structural block diagram of the invention；
Fig. 5 is the data structure diagram of encryption sensing data data packet of the invention；
Fig. 6 is the data structure diagram of rolling-code flow control information of the invention；
Fig. 7 is first time combination code iterative process figure of the invention.
Specific embodiment
The present invention will be further described below with reference to the drawings.
As shown in Figure 1, present invention specific implementation is mainly by wireless sensing node, Wi-Fi access point, remote server, existing
Host computer and long-range host computer composition, wireless sensing node and Wi-Fi access point are wirelessly connected communication, live host computer and
Wi-Fi access point connecting communication, remote server and Wi-Fi access point connecting communication, remote server and long-range host computer connect
Connect news；Wireless sensing node, live host computer and Wi-Fi access point set up stringent equipment management local area network.
As shown in Fig. 2, wireless sensing node connects external sensor through signal acquisition interface, wireless sensing node acquisition is outer
The sensing data of portion's sensor, and sensing data is encrypted；The radio network interface of wireless sensing node is connect by Wi-Fi
Access point connects internet, the sensing data of encryption is transmitted to remote server or broadcast to local area network, remote server will add
Close sensing data is stored to database；As shown in figure 4, live host computer is connected to place local area network, after authentication,
The acquisition that wireless sensing node carries out sensing data, unlatching and stopping including acquisition are controlled, and obtains and parse the biography of encryption
Feel data；Long-range host computer is by network connection remote server, after authentication, obtains and parse the sensing number of encryption
According to.Host computer realizes data visualization simultaneously.
As shown in figure 3, being stored in MongoDB database after remote server receives the data from wireless sensing node
In.If host computer request is long-range to obtain real-time sensory data, the host computer can be directly forwarded to.
In specific implementation, wireless sensing node sensing data collected include the oil pressure of vehicle brake, temperature, whether
The physical datas such as contact, displacement.
Connection password need to be inputted when live host computer connection Wi-Fi access point, and could be connected by MAC Address verification,
Block unidentified equipment except local area network by Wi-Fi access point.
Wireless sensing node is provided with UDP network interface, and remote server is provided with UDP and TCP network interface, on scene
Position machine is provided with UDP network interface；Wireless sensing node opens three UDP network interfaces, and first UDP network port is through Wi-
The sensing number that the sensing data of Fi access point uplink encryption is encrypted to remote server, second UDP network port transmission
According to the live host computer in local area network, the third UDP network port receives the control signal of live host computer in local area network；Far
Journey server opens a UDP network port, and the sensing number of the encryption from wireless sensing node is received through Wi-Fi access point
According to；In addition remote server opens a TCP listening port, and the long-range connection of long-range host computer.
Remote server passes through the verification of account and password to the authentication of long-range host computer, and uses rsa encryption
Algorithm for encryption account and password；After long-range host computer connection remote server, remote server is the long-range upper of each connection
Machine creates public key.If account and password mistake when long-range host computer is attached, disconnect immediately, prevent Brute Force and
Replay Attack.
Specific implementation of the invention is as follows:
In specific implementation, present system operational process step includes:
The device mac address that digital controller setting allows to connect；
Wireless sensing node opens wireless communication；
Long-range host computer connects remote server, encrypts to administrator's account and password, is transferred to remote server
Verify identity；
The database collection title of this experiment on long-range host computer setting remote server；
Long-range host computer carries the control command of authentication information by local area network, transmission, opens wireless sensing node
Data acquisition and transmission；
Wireless sensing node acquires and encrypts sensing data；
Remote server receives and stores data to MongoDB database；
Host computer receives and parses through encryption sensing data by local area network or remote server.
Wireless sensing node forms encryption sensing data packet and sends after encrypting to each raw sensory data, such as Fig. 5
Shown, encryption sensing data packet includes the timestamp positioned at head and multiple encryption sensing datas after timestamp, encryption
Sensing data is handled to obtain by the symmetric encipherment algorithm binding time stamp based on time mask, the symmetric cryptography based on time mask
Algorithm is named as STE (StampTime Encryption), and STE Encryption Algorithm is specifically the time using encryption sensing data packet
The Millisecond time figure of stamp least-significant byte obtains after carrying out XOR operation as mask and collected raw sensory data.
Rolling-code flow control information based on counter is named as CBRSK (Counter-Based Rolling Key
Stream)。
Live host computer realizes the control of wireless sensing node by the rolling-code flow control information based on counter,
Specifically: wireless sensing node and live host computer are internally provided with counter, counter by wireless sensing node number with
Host computer number corresponds, after live host computer sends the control command that sensing data acquires to wireless sensing node, wirelessly
Sensing node counter adds 1, and repeatedly sends confirmation message to live host computer；After live host computer receives confirmation message,
Live host computer counter adds 1, and otherwise, live host computer sends the control command of sensing data acquisition again.
Live host computer is sent to wireless sensing node using rolling-code flow control information as control command, such as Fig. 6 institute
Show, rolling-code flow control information includes by 8 wireless sensing node number NID, 8 host computer number HID, 8 digit counters
Low 4 CNTL, 8 order of the bit number CMD and 8 password stream KS, totally 36.High 4, counter do not transmit, and order is on scene
Position machine generation is sent to wireless sensing node and starts and stops for controlling the data acquisition of wireless sensing node；8 therein
Password stream is numbered by 8 wireless sensing nodes, 8 host computer numbers, 8 digit counter numerical value and 8 order of the bit number generate, specifically
It is:
1) wireless sensing node number, host computer number, counter values and order number are subjected to XOR operation first
8 original fusion codes are generated initially as present fusion code, are then iterated processing in the following way；
2) in i-th iteration, the 0th, 1,4,5 of present fusion code generates 1 password by nonlinear function f (a),
Nonlinear function f (a) is a functions for inputting 4 signless integer a, exporting 16 bit binary numbers；
3) combination code is carried out again and rolls update: the 0th of present fusion code the, 2,4,6 progress XOR operation is obtained into operation
As a result, the 1st to 7 of present fusion code is spliced into new combination code, the 1st to 7 conduct of present fusion code with the operation result
The 0th to 6 of new combination code, the 7th as new combination code of the operation result, then using new combination code as present fusion code weight
Return step 2)；
As shown in fig. 7,8 original fusion codes carry out first time iteration, the 0th, 1,2,3 raw by nonlinear function f (a)
At the 0th password KS0 of password stream, the 0th, 2,4,6 XOR operation obtains Bit8, by the He of Bit1~7 of 8 original fusion codes
Bit8 forms to obtain updated 8 new combination code Bit1~8.
In specific implementation, nonlinear function f (a) is specially to input 4 unsigned number a (numerical value 0~15), exports binary system
A of number 1011011010101001b, such as inputting a is 3, then exports 1.
4) constantly repeat the above steps 2)~3) iteration 8 times, 1 cipher code set that step 2) in 8 iterative process is obtained
At 8 password streams.
Thus as it can be seen that the present invention is in the case where guaranteeing safety, communication improves system deployment for above-mentioned implementation
Portability；Cloud data storage method meets remote data access and testing requirement, improves test and development efficiency.
Claims (8)
1. a kind of wireless vehicle brake test macro to ensure information safety, it is characterised in that: mainly by wireless sensing node,
Wi-Fi access point, remote server, live host computer and long-range host computer composition, wireless sensing node and Wi-Fi access point without
Line connecting communication, live host computer and Wi-Fi access point connecting communication, remote server and Wi-Fi access point connecting communication, far
Journey server and long-range host computer connecting communication；Wireless sensing node, live host computer and Wi-Fi access point set up device management
Local area network；Wireless sensing node connects external sensor through signal acquisition interface, and wireless sensing node acquires external sensor
Sensing data, and sensing data is encrypted；The radio network interface of wireless sensing node is mutual by the connection of Wi-Fi access point
The sensing data of encryption is transmitted to remote server or broadcast to local area network by networking, and remote server is by the sensing number of encryption
According to storing to database；Live host computer connects local area network, and after authentication, control wireless sensing node carries out sensing number
According to acquisition, and obtain and parsing encryption sensing data；Long-range host computer is by network connection remote server, by identity
After verifying, the sensing data of encryption is obtained and parsed.
2. a kind of wireless vehicle brake test macro to ensure information safety according to claim 1, it is characterised in that:
Connection password need to be inputted when live host computer connection Wi-Fi access point, and could be connected by MAC Address verification, and unknown body is made
The equipment of part is blocked except local area network by Wi-Fi access point.
3. a kind of wireless vehicle brake test macro to ensure information safety according to claim 1, it is characterised in that:
The wireless sensing node is provided with UDP network interface, and remote server is provided with UDP and TCP network interface, and scene is upper
Machine is provided with UDP network interface；Wireless sensing node opens three UDP network interfaces, and first UDP network port is through Wi-Fi
The sensing data that the sensing data of access point uplink encryption is encrypted to remote server, second UDP network port transmission
Live host computer in local area network, the third UDP network port receive the control signal of live host computer in local area network；Remotely
Server opens a UDP network port, and the sensing data of the encryption from wireless sensing node is received through Wi-Fi access point；
In addition remote server opens a TCP listening port, and the long-range connection of long-range host computer.
4. a kind of wireless vehicle brake test macro to ensure information safety according to claim 1, it is characterised in that:
The remote server passes through the verification of account and password to the authentication of long-range host computer, and is calculated using rsa encryption
Method encrypts account and password；After long-range host computer connection remote server, remote server is the long-range host computer of each connection
Create public key.
5. a kind of wireless vehicle brake test macro to ensure information safety according to claim 1, it is characterised in that:
The wireless sensing node carries out the processing of the symmetric cryptography based on time mask to sensing data, and live host computer is passed to wireless
The control for feeling node is realized by the rolling-code flow control information based on counter.
6. a kind of wireless vehicle brake test macro to ensure information safety according to claim 1, it is characterised in that:
The wireless sensing node forms encryption sensing data packet and sends after encrypting to each raw sensory data, encryption sensing
Data packet includes the timestamp positioned at head and multiple encryption sensing datas after timestamp, encrypts sensing data by being based on
The symmetric encipherment algorithm binding time stamp of time mask handles to obtain, and specifically utilizes the timestamp low 8 of encryption sensing data packet
The Millisecond time figure of position obtains after carrying out XOR operation as mask and collected raw sensory data.
7. a kind of wireless vehicle brake test macro to ensure information safety according to claim 1, it is characterised in that:
Live host computer realizes the control of wireless sensing node by the rolling-code flow control information based on counter, specifically:
The wireless sensing node and live host computer are internally provided with counter, counter by wireless sensing node number and on
Position machine number corresponds, and after live host computer sends control command to wireless sensing node, wireless sensing node counter adds
1, and repeatedly confirmation message is sent to live host computer；After live host computer receives confirmation message, live host computer counter
Add 1, otherwise, live host computer sends control command again；The live host computer using rolling-code flow control information as
Control command is sent to wireless sensing node, and rolling-code flow control information includes 8 wireless sensing node numbers, 8 scenes
Host computer number, low 4 of 8 digit counters, 8 order of the bit number and 8 password streams, high 4, counter do not transmit；Therein 8
Position password stream is numbered by 8 wireless sensing nodes, 8 host computer numbers, 8 digit counter numerical value and 8 order of the bit number generate, tool
Body is:
1) wireless sensing node number, host computer number, counter values and order number are subjected to XOR operation first and generate 8
Position original fusion code, is then iterated processing in the following way；
2) in i-th iteration, the 0th, 1,4,5 of present fusion code generates 1 password by nonlinear function f (a), non-thread
Property function f (a) be input 4 signless integer a, export 16 bit binary numbers a functions；
3) combination code is carried out again and rolls update: the 0th of present fusion code the, 2,4,6 progress XOR operation is obtained into operation result,
The 1st to 7 of present fusion code and the operation result are spliced into new combination code, and the 1st to 7 of present fusion code is as new fusion
The 0th to 6 of code, the 7th as new combination code of the operation result, then repeated back to using new combination code as present fusion code
Step 2)；
4) constantly repeat the above steps 2)~3) iteration 8 times, 1 password that step 2) in 8 iterative process is obtained forms 8
Password stream.
8. a kind of wireless vehicle brake test macro to ensure information safety according to claim 1, it is characterised in that:
0th, 2,4,6 progress XOR operation result of present fusion code is specifically: first by the 0th of present fusion code the, 2 progress exclusive or
Operation obtains first as a result, the 4th, 6 progress XOR operation of present fusion code obtains second as a result, the first result and the second knot
Fruit carries out XOR operation and obtains final operation result.
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| CN201811535536.8A CN109587155B (en) | 2018-12-14 | 2018-12-14 | Wireless vehicle brake test system for guaranteeing information safety |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112188484A (en) * | 2020-09-14 | 2021-01-05 | 中标慧安信息技术股份有限公司 | Secure encryption method suitable for sensor network |
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