CN102930303A - Active and passive radio frequency identification method and system for security domains - Google Patents
Active and passive radio frequency identification method and system for security domains Download PDFInfo
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- CN102930303A CN102930303A CN2012103600573A CN201210360057A CN102930303A CN 102930303 A CN102930303 A CN 102930303A CN 2012103600573 A CN2012103600573 A CN 2012103600573A CN 201210360057 A CN201210360057 A CN 201210360057A CN 102930303 A CN102930303 A CN 102930303A
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Abstract
The invention relates to an active and passive radio frequency identification method for security domains. The active and passive radio frequency identification method comprises the following steps in sequence of: generating random numbers by a reader-writer, setting the carrier frequency of a receive channel according to the random numbers, and transmitting the random numbers to an electronic tag; after the electronic tag receives the random numbers, transmitting encrypted information to the reader-writer according to the encrypted information of the random numbers and the set carrier frequency of a transmission channel; and after the reader-writer receives the encrypted information, decrypting the information, and transmitting the information of the electronic tag to a terminal. The invention also discloses an active and passive radio frequency identification system. According to the invention, as an active electronic tag transmitting mode is changed to be a passive electronic tag monitoring mode, a communication channel and transmitted contents of the electronic tag cannot by monitored when the electronic tag is not in a read-write area. The active and passive radio frequency identification method and system can be used for effectively solving the problem of potential safety hazards of the conventional active transmission mode, and changing a unidirectional answer mode into a bilateral answer mode, wherein a bilateral answer process is implemented by transmitting the encrypted information in a dynamic channel.
Description
Technical field
The present invention relates to the RF identifying safety field, especially a kind of active passive radio-frequency identification method and system for security fields.
Background technology
Active radio frequency identification system generally is comprised of active electronic label, read write line and data transmission processing system three parts.The characteristics of active radio frequency identification system are that reading/writing distance is far away, fast, the information of reading and writing data receives and propagates that penetrability is strong, the storage information capacity is large etc.
At present, the active electronic label overwhelming majority on the market is active tag, is mainly used in the fields such as container management, highway non-parking charge, electric theft-proof system, Mobile data collection, positioning system, valuable asset management, vehicle identification.Along with active radio frequency identification system in recent years progressively is applied to public safety field, the active electronic label data transmission security also just there has been outstanding demand.In the active-mode active radio system, electronic tag only sends self and has stored information, and read write line will and show information processing after receiving information.But this process does not authenticate the legal identity of electronic tag, and namely any as long as send the electronic tag of identical information, read write line can think that all it is legal, will stay leeway for the fraud of electronic tag like this, brings potential safety hazard.
Summary of the invention
Primary and foremost purpose of the present invention is to provide a kind of high safety, the active passive radio-frequency identification method that is used for security fields of passive transmission enciphered message on dynamic channel.
For achieving the above object, the present invention has adopted following technical scheme: a kind of active passive radio-frequency identification method for security fields, and the method comprises the step of following order:
(1) read write line generates random number, and sets the receive channel carrier frequency according to random number, sends afterwards random number to electronic tag;
(2) after electronic tag is received random number, according to the emission channel carrier frequency of random number encryption information and setting, send enciphered message to read write line;
(3) read write line is deciphered after receiving enciphered message, sends at last electronic labeling information to terminal.
Another object of the present invention is to provide a kind of active passive radio-frequency recognition system, comprise the electronic tag and the read write line that carry out each other radio frequency identification, electronic tag is comprised of the first antenna, the first transceiver module and first processor, read write line is comprised of the second antenna, the second transceiver module, the second processor and power supply, the second processor and terminal called.
As shown from the above technical solution, the present invention by with electronic tag initiatively sending mode change into passive listen mode so that electronic tag can't monitor its communication channel and transmission content not in the read-write zone time.The present invention has effectively solved the security hidden trouble of present active sending mode, and single answer-mode is changed to the mode of answer, and the answer process is the information after the dynamic channel transmission is encrypted.
Description of drawings
Fig. 1,2 is circuit block diagram of the present invention;
Fig. 3 is workflow diagram of the present invention.
Embodiment
A kind of active passive radio-frequency identification method for security fields, the method comprises the step of following order: the first, read write line 2 generates random number, and sets the receive channel carrier frequency according to random number, sends afterwards random number to electronic tag 1; The second, after electronic tag 1 is received random number, according to the emission channel carrier frequency of random number encryption information and setting, send enciphered message to read write line 2; The 3rd, read write line 2 is deciphered after receiving enciphered message, sends at last electronic labeling information to terminal.As shown in Figure 3.
The present invention is further illustrated below in conjunction with Fig. 3.
Described electronic tag 1 is set initial communication channel with read write line 2, and the frequency of this initial communication channel can be that what to decide frequency also can be frequency hopping;
Described read write line 2 produces the random number of certain-length at set intervals, sets the channel of receiving cable according to random number; Concrete random number length adjusts according to key length and the transmission message length of cryptographic algorithm, and in order to guarantee the dynamic of channel and key, generally preferably be no more than 1 day interval time, and the requirement of concrete time according to security performance adjusts;
Read write line 2 with the random number that produces by continuous the sending of the channel of initial setting;
Described electronic tag 1 is listening state in non-read-write zone always, enter the read-write zone after, in case receive the random number that read write line 2 sends, random number will be preserved;
Described electronic tag 1 is encrypted processing according to random number to the information that will send, and sets the channel identical with read write line 2 receiving ends according to random number, then begins to send.When described electronic tag 1 receives random number at every turn, all this random number and the last random number that receives are compared, if data consistent just continues to use last enciphered data and transmitting channel;
The receiving end of described read write line 2 is decrypted after the enciphered message that receives electronic tag 1 transmission, and the data after the deciphering are electronic labeling information.
As shown in Figure 1, 2, the invention also discloses the active passive radio-frequency recognition system for security fields, comprise the electronic tag 1 and the read write line 2 that carry out each other radio frequency identification, electronic tag 1 is comprised of the first antenna, the first transceiver module and first processor, read write line 2 is comprised of the second antenna, the second transceiver module, the second processor and power supply, the second processor and terminal called.The input/output terminal of described first processor links to each other with the first transceiver module, the input/output terminal of the first transceiver module links to each other with the first antenna, the input/output terminal of described the second processor links to each other with the second transceiver module, power supply is to the second processor and the power supply of the second transceiver module, and the input/output terminal of the second transceiver module links to each other with the second antenna.Described first and second transceiver module is radio frequency transceiving module
The effect of the second processor is to receive and sendaisle is received and sent messages for control, and the enciphered message that receives of processing and and terminal interaction; The effect of the second transceiver module is the enciphered message that generates and sends random number, receives electronic tag 1.The effect of the first transceiver module is to receive random number and send enciphered message.
In a word, the present invention by with electronic tag 1 initiatively sending mode change into passive listen mode so that electronic tag 1 can't monitor its communication channel and transmission content not in the read-write zone time.The present invention has effectively solved the potential safety hazard of present active sending mode, and single answer-mode is changed to the mode of answer, and the answer process is the information after the dynamic channel transmission is encrypted.
Claims (10)
1. active passive radio-frequency identification method that is used for security fields, the method comprises the step of following order:
(1) read write line generates random number, and sets the receive channel carrier frequency according to random number, sends afterwards random number to electronic tag;
(2) after electronic tag is received random number, according to the emission channel carrier frequency of random number encryption information and setting, send enciphered message to read write line;
(3) read write line is deciphered after receiving enciphered message, sends at last electronic labeling information to terminal.
2. the active passive radio-frequency identification method for security fields according to claim 1, it is characterized in that: described electronic tag and read write line are set initial communication channel, the frequency of this initial communication channel is frequently fixed or frequency hopping, and electronic tag is monitored once at set intervals at initial channel.
3. the active passive radio-frequency identification method for security fields according to claim 1, it is characterized in that: described read write line produces the random number of certain-length at set intervals, sets the channel of receiving cable according to random number; Read write line with the random number that produces by continuous the sending of the channel of initial setting.
4. the active passive radio-frequency identification method for security fields according to claim 1 is characterized in that: the receiving end of described read write line is decrypted after receiving the enciphered message that electronic tag sends, and the data after the deciphering are electronic labeling information.
5. the active passive radio-frequency identification method for security fields according to claim 2, it is characterized in that: described electronic tag is listening state in non-read-write zone always, after entering the read-write zone, in case receive the random number that read write line sends, random number will be preserved.
6. the active passive radio-frequency identification method for security fields according to claim 2, it is characterized in that: described electronic tag is encrypted processing according to random number to the information that will send, and set the channel identical with the read write line receiving end according to random number, then begin to send.
7. the active passive radio-frequency identification method for security fields according to claim 6, it is characterized in that: when described electronic tag receives random number at every turn, all this random number and the last random number that receives are compared, if data consistent just continues to use last enciphered data and transmitting channel.
8. the active passive radio-frequency recognition system for security fields according to claim 1, it is characterized in that: comprise the electronic tag and the read write line that carry out each other radio frequency identification, electronic tag is comprised of the first antenna, the first transceiver module and first processor, read write line is comprised of the second antenna, the second transceiver module, the second processor and power supply, the second processor and terminal called.
9. the active passive radio-frequency recognition system for security fields according to claim 8, it is characterized in that: the input/output terminal of described first processor links to each other with the first transceiver module, and the input/output terminal of the first transceiver module links to each other with the first antenna; The input/output terminal of described the second processor links to each other with the second transceiver module, and power supply is to the second processor and the power supply of the second transceiver module, and the input/output terminal of the second transceiver module links to each other with the second antenna.
10. according to claim 8 or 9 described active passive radio-frequency recognition systems for security fields, it is characterized in that: described first and second transceiver module is radio frequency transceiving module.
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| CN2012103600573A CN102930303A (en) | 2012-09-25 | 2012-09-25 | Active and passive radio frequency identification method and system for security domains |
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| CN2012103600573A CN102930303A (en) | 2012-09-25 | 2012-09-25 | Active and passive radio frequency identification method and system for security domains |
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| CN101101633A (en) * | 2007-07-25 | 2008-01-09 | 中兴通讯股份有限公司 | Electronic tag scanning method and system |
| CN101217362A (en) * | 2007-12-29 | 2008-07-09 | 中山大学 | RFID communication security mechanism established based on dynamic randomization DRNTRU public key encryption system |
| CN101333892A (en) * | 2008-07-29 | 2008-12-31 | 宁波高新区瑞奥光电技术有限公司 | Safety processing method of RFID system for door lock |
| CN101645138A (en) * | 2009-09-14 | 2010-02-10 | 西安交通大学 | Radio frequency identification (RFID) privacy authenticating method |
| EP2286392A1 (en) * | 2007-04-26 | 2011-02-23 | Tagent Corporation | Embedding items with rfid tags for tracking and calibration |
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- 2012-09-25 CN CN2012103600573A patent/CN102930303A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433558A (en) * | 2000-02-04 | 2003-07-30 | 3M创新有限公司 | Method of authenticating tag |
| CN101038619A (en) * | 2007-02-06 | 2007-09-19 | 中国科学院研究生院 | Radio frequency recognition system privacy identification method |
| EP2286392A1 (en) * | 2007-04-26 | 2011-02-23 | Tagent Corporation | Embedding items with rfid tags for tracking and calibration |
| CN101101633A (en) * | 2007-07-25 | 2008-01-09 | 中兴通讯股份有限公司 | Electronic tag scanning method and system |
| CN101093556A (en) * | 2007-07-27 | 2007-12-26 | 北京华大恒泰科技有限责任公司 | Active radio frequency identification label, system and reading / writing method |
| CN101217362A (en) * | 2007-12-29 | 2008-07-09 | 中山大学 | RFID communication security mechanism established based on dynamic randomization DRNTRU public key encryption system |
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Application publication date: 20130213 |