CN204440405U - To the RFID reader of RFID label tag off-line type certification - Google Patents
To the RFID reader of RFID label tag off-line type certification Download PDFInfo
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- CN204440405U CN204440405U CN201420500033.8U CN201420500033U CN204440405U CN 204440405 U CN204440405 U CN 204440405U CN 201420500033 U CN201420500033 U CN 201420500033U CN 204440405 U CN204440405 U CN 204440405U
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- reader
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- label
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Abstract
The utility model discloses a kind of RFID reader to the certification of RFID label tag off-line type.Reader in this product has two kinds of mode of operations: init Tag and authenticating tag.When using this product, first user arranges the password of encryption, then initialization whole RFID label tag that will use, afterwards in the work of certification RFID label tag, the legitimacy of reader this label of certification before reading RFID label tag data, if label is not by the certification of reader, then output alarm information.By this product, effectively can avoid the RFID label tag of palming off, thus ensure that the security of system.This product does not need accessing database to complete to the certification of label, is applicable to the numerous situation of number of labels and mobile working environment.
Description
Technical field
The present invention relates to RFID reader carries out certification technology to label legitimacy, more particularly, refer to that a kind of reader based on encryption and decryption technology is to the technology of label legitimacy certification.
Background technology
Along with the unify progress of Digital Electronic Technique of micro-electro-mechanical systems has been born RFID (Radio FrequencyIdentification) technology.Utilize RFID technique, by Single-chip Controlling radio-frequency module, utilize antenna to send the resonant field of applicable radio-frequency (RF) tag, effectively can realize data communication with radio-frequency (RF) tag, complete acquisition and the setting of data in the discovery of radio-frequency (RF) tag and label.Current RFID technique has been widely used in the field such as the manufacturing and assembling, aviation luggage process, mail/fast freight parcel process, document tracking/library management and access control/electronic entrance ticket.
But using the mode of RFID label tag record data to have fatal potential safety hazard, is exactly that reader does not check the true and false of label.Such as, use in the gate control system of RFID at one, if the legitimacy of gate control system not certification RFID label tag, then assailant can purchase the label that and legitimate tag use the same communications protocols, to copy in an opening and closing method RFID label tag data again in illegal label, then this label is likely by gate control system, then the assailant legal person that just can disguise oneself as steals thing by gate inhibition.The method of current discriminating RFID label tag personation in advance the TID of RFID label tag is preserved in database on the computer systems, then in use the TID of the label of reader reading searched in a database, judge the legitimacy of label according to lookup result.
The major defect of above method is:
(1) must by the TID of a certain label of computer access back-end data library lookup, if the computing machine that connects of reader or reader can not interconnection network, the true and false of label cannot be differentiated.
(2) TID of label must preserve in a database in advance, if the newly-increased label of temporary needs, and the TID of this label does not preserve in a database, then this label is not by certification.
Therefore be necessary to do further improvement to current RFID reader system, to improve the security of rfid system.
Utility model content
The purpose of this utility model is at least to solve one of above-mentioned technological deficiency.
In order to improve the security of rfid system, the invention provides a kind of RFID reader of energy offline authentication RFID label tag legitimacy.Reader in the present invention increases encryption/decryption module on existing handheld reader basis, can complete encryption and decryption operation voluntarily.Reader in this product has two kinds of mode of operations: init Tag and authenticating tag.Reader is initialization whole labels that will use first, afterwards in authenticating tag work, the legitimacy of reader authenticating tag before reading RFID label tag data, if authenticating tag is legal, reader just continues the data of reading tag storage inside, otherwise this label of reader prompts is illegal label.By this product, effectively can avoid the RFID label tag of palming off, thus ensure that the security of system.This product does not need accessing database to complete to the certification of label, is applicable to the numerous situation of number of labels and mobile working environment.
The utility model is made up of antenna (1), radio-frequency module (2), microprocessor (3), LED display (4), keyboard (5), encryption/decryption module (6), storage unit (7) and power supply (8).
The electromagnetic wave received is converted to current signal by antenna (1), or converts current signal to electromagnetic radiation and go out;
Radio-frequency module (2) is modulated transmitting and is transferred to electronic tag, receives and modulates the radiofrequency signal from electronic tag;
Microprocessor (3) completes information processing and control, control the communication process of reader and electronic tag, comprise the encoding and decoding of signal, the data transmitted between reader and label are encrypted and decrypted, perform anti-collision algorithm, checking computing is carried out to the identity of label;
LED display (4) is responsible for the operation of display operation item common user, display operating result;
Keyboard (5) is responsible for user and is selected operation item and input character, and keyboard is made up of numerical key, function key;
Encryption/decryption module (6) stores the encryption and decryption operation that enciphering and deciphering algorithm completes data;
Storage unit (7) reader system software, anti-collision algorithm, encryption and decryption key and result of calculation;
Power supply (8) is powered to whole system.
The present utility model is by the following technical solutions:
Reader has two kinds of mode of operations: init Tag and authenticating tag.Need during init Tag first to arrange reader key.
Reader key setting steps:
Step1: user arranges reader for " init Tag " mode of operation;
Step2: user arranges the password KeyDES of encryption on reader;
Reader init Tag step:
Step1: user arranges reader for " init Tag " mode of operation;
Step2: the TID of 8 bytes of reader reading tag;
Step3: the built-in encrypting module of reader is encrypted TID, and encryption key is the Key that user is arranged at Step1, and the ciphertext result obtained is the ResultDES of 8 bytes;
Step4: ResultDES obtained in the previous step is write inside tags user data area assigned address by reader;
Reader is to the authenticating step of label:
Step1: user arranges reader for " authenticating tag " mode of operation;
Step2: the TID of 8 bytes of reader reading tag;
Step3: 8 bytes of reader reading tag internal data field assigned address, as ResultDES, if 8 bytes of label data district assigned address are empty, then forward Step5 to; If assigned address 8 bytes in label data district are not empty, be then used in the key K ey that preserves in reader and built-in decipherment algorithm is decrypted ResultDES, obtain the ValueID of 8 bytes;
Step4: whether reader compares TID with ValueID identical, if identical, represent that 8 byte ResultDES of inside tags data field assigned address are the ciphertexts arranged in label initialization, reader will continue data in reading tag, otherwise, go to Step5;
Step5: reader is thought that label is illegal and produced warning message.
The advantage of the RFID reader to the certification of RFID label tag off-line type of the present invention is:
(1) adopt technical method of the present invention, reader carries out authentication to label, and only when authentication success, the data in reader ability reading tag, otherwise prompting illegal label, can avoid like this palming off label, ensure that the security of system.
(2) technical method of the present invention is adopted, adopt offline authentication mode, reader does not need the legitimacy of the database authenticating tag connected on background computer, like this when needing a newly-increased label at work, do not need to upgrade RFID label tag database and just to newly-increased label initialization, when this reader is applicable to mobile working, can not connect the situation of computer network.
(3) user of reader oneself can arrange the key of enciphering and deciphering algorithm, if certain user needs to use multiple reader work, he can be arranged to identical key multiple reader, then these readers can authenticating tag.
(4) but the user of reader oneself arranges the key of enciphering and deciphering algorithm, the encryption and decryption key that the different user of this sample product is arranged is different, and the label that such user is initialized can not by the reader authentication of other users.
(5) encryption/decryption module in different readers can built-in different enciphering and deciphering algorithm.
Accompanying drawing explanation
Fig. 1 is system composition diagram.
Fig. 2 is init Tag process flow diagram.
Fig. 3 is authenticating tag process flow diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model is made up of antenna (1), radio-frequency module (2), microprocessor (3), LED display (4), keyboard (5), encryption/decryption module (6), storage unit (7) and power supply (8).
The electromagnetic wave received is converted to current signal by antenna (1), or converts current signal to electromagnetic radiation and go out;
Radio-frequency module (2) is modulated transmitting and is transferred to electronic tag, receives and modulates the radiofrequency signal from electronic tag;
Microprocessor (3) completes information processing and control, control the communication process of reader and electronic tag, comprise the encoding and decoding of signal, the data transmitted between reader and label are encrypted and decrypted, perform anti-collision algorithm, checking computing is carried out to the identity of label;
LED display (4) is responsible for the operation of display operation item common user, display operating result;
Keyboard (5) is responsible for user and is selected operation item and input character, and keyboard is made up of numerical key, function key;
Encryption/decryption module (6) stores the encryption and decryption operation that enciphering and deciphering algorithm completes data;
Storage unit (7) reader system software, anti-collision algorithm, encryption and decryption key and result of calculation;
Power supply (8) is powered to whole system.
Reader authentication label process comprises the setting of reader password, init Tag and authenticating tag process.As shown in Figure 2, authenticating tag flow process as shown in Figure 3 for init Tag flow process.
(1) reader password is arranged
User can select password setting operation by the LED display (4) on reader and keyboard (5), then by the key K ey of keyboard (5) input 8 combination of numbers as encryption and decryption, this key is kept in storage unit (7).
(2) init Tag
When needing in user to use new label, reader needs to carry out initialization to this label, and its flow process as shown in Figure 2.
Step1: user selects reader mode of operation to be " init Tag " by the LED display (4) on reader and keyboard (5).
Step2: user uses reader reading tag, the TID of 8 bytes of reader reading tag.
Step3: reader calls encryption/decryption module 6 pairs of TID encryptions, and encryption key is the Key in storage unit (7), and the ciphertext result obtained is the ResultDES of 8 bytes;
Step4: ResultDES obtained in the previous step is write front 8 bytes in number district, inside tags user data area 1 by reader;
(3) authenticating tag
Step1: user selects reader mode of operation to be " authenticating tag " by the LED display (4) on reader and keyboard (5).
Step2: the TID of 8 bytes of reader reading tag;
Step3: the content of inner 1 front 8 bytes in number district of reader reading tag, as ResultDES, if front 8 bytes in label 1 number district are empty, then forwards Step5 to; If front 8 bytes in label 1 number district are not empty, use the Key in encryption/decryption module 6 and storage unit 7 to be decrypted ResultDES, obtain the ValueID of 8 bytes;
Step4: whether reader compares TID with ValueID by microprocessor (3) identical, if this label of identical explanation is legitimate tag, terminates, otherwise go to Step5 to the certification of label;
Step5: reader thinks that label is illegal and in the upper display alarm information of LED display (4).
Claims (1)
1. the RFID reader of pair RFID label tag off-line type certification, is characterized in that: comprise antenna (1), radio-frequency module (2), microprocessor (3), LED display (4), keyboard (5), encryption/decryption module (6), storage unit (7) and power supply (8) composition; Described microprocessor (3) is connected with storage unit (7) with radio-frequency module (2), LED display (4), keyboard (5), encryption/decryption module (6); Described radio-frequency module (2) is connected with antenna (1); Described power supply (8) is connected with whole system; User is by described keyboard (5) input encryption and decryption key; The encryption and decryption key of user's input is kept in described storage unit (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500033.8U CN204440405U (en) | 2014-09-01 | 2014-09-01 | To the RFID reader of RFID label tag off-line type certification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500033.8U CN204440405U (en) | 2014-09-01 | 2014-09-01 | To the RFID reader of RFID label tag off-line type certification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204440405U true CN204440405U (en) | 2015-07-01 |
Family
ID=53608243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420500033.8U Expired - Fee Related CN204440405U (en) | 2014-09-01 | 2014-09-01 | To the RFID reader of RFID label tag off-line type certification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204440405U (en) |
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2014
- 2014-09-01 CN CN201420500033.8U patent/CN204440405U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20160901 |