CN112215323A - Anti-copy RFID card based on joint control of physical layer and algorithm layer - Google Patents
Anti-copy RFID card based on joint control of physical layer and algorithm layer Download PDFInfo
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- CN112215323A CN112215323A CN202011092582.2A CN202011092582A CN112215323A CN 112215323 A CN112215323 A CN 112215323A CN 202011092582 A CN202011092582 A CN 202011092582A CN 112215323 A CN112215323 A CN 112215323A
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- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
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- 230000003044 adaptive effect Effects 0.000 claims description 3
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- 238000005336 cracking Methods 0.000 abstract description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
- G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
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Abstract
The invention relates to the technical field of RFID (radio frequency identification devices), and discloses an anti-copy RFID card based on joint control of a physical layer and an algorithm layer, which comprises an IC card reader and an IC card, wherein the IC card reader internally comprises an MCU (microprogrammed control unit) microcontroller, an RFID radio frequency chip, an RTC (real time clock), a blue-green state lamp, a buzzer, a key background lamp, a 12V power interface, a Wiegand input, a Wiegand output and a serial port, and a 3 x 4 matrix keyboard is arranged outside the IC card reader. This prevent duplicating RFID card based on physical layer and algorithm layer joint control combines through the simple function of ordinary IC card reader and access control ware, possesses two kinds of mode card reader modes and all-in-one mode, and wherein the all-in-one mode just combines ordinary IC card reader function and simple access control ware's function to it encrypts to provide exclusive customization card and encryption algorithm, makes the difficult cracking of card data, strengthens the card and can not duplicate the rank.
Description
Technical Field
The invention relates to the technical field of RFID (radio frequency identification devices), in particular to an anti-copy RFID card based on joint control of a physical layer and an algorithm layer.
Background
At present, the existing common ISO14443(TYTEA, TYPEB) IC entrance guard card reader is realized, and the equipment for realizing the time management function is connected to an entrance guard controller through an RS485/RS232 interface bus or a network cable, and card data is acquired by swiping the card by the IC card reader, and then the card data is uploaded to the entrance guard controller, and after the entrance guard controller processes or judges a time period, control information is returned to the card reader, so that the entrance guard time management function is indirectly realized.
IC card: the non-contact intelligent card, also called radio frequency card, seals one or more integrated circuit chips and induction coils with storage, encryption and data processing capabilities in a standard PVC card, completes the access, modification, reading and writing and the like of information through data signals of standard radio waves and returns the information to a card reader.
An IC card reader: an IC card reader provides a magnetic field, receives a radio frequency signal sent by an interpreter, and sends product information stored in a chip by virtue of energy obtained by induction current or actively sends a signal with a certain frequency; the information is read and decoded by the interpreter, and then relevant data processing is carried out.
At present, the existing IC card reader has single function, can only read the card, uploads data to an access controller, and is controlled by the controller or carries out time management door opening according to time. The conventional card reader cannot store user card data in batches, has no time management function, only has the functions of swiping a card and uploading data, does not have the function of configuring the card, and has low adaptability to various controllers.
Disclosure of Invention
The invention provides an anti-copy RFID card based on combined control of a physical layer and an algorithm layer, and aims to combine simple functions of a common IC card reader and an access controller, and have two working modes, namely a card reader mode and an all-in-one machine mode.
The invention provides the following technical scheme: an anti-copy RFID card based on joint control of a physical layer and an algorithm layer comprises an IC card reader and an IC card, wherein the IC card reader internally comprises an MCU (microprogrammed control Unit) microcontroller, an RFID radio frequency chip, an RTC (real time clock), a blue-green state lamp, a buzzer, a key background lamp, a 12V power interface, a Wiegand input, a Wiegand output and a serial port, and a 3 x 4 matrix keyboard is installed outside the IC card reader;
the MCU microcontroller controls the RFID radio frequency chip to output a 13.56Mhz radio frequency signal to the passive IC card in a single way; the passive IC card obtains magnetic field energy through coupling, energy is provided for a chip of the IC card, and the IC card starts to work; firstly, the MCU controls the RFID radio frequency chip to send a signal, when the IC card meets the signal, the signal is signed ATQA, then the MCU receives the ATQA, receives and sends an anti-collision signal which accords with 14443-2, starts to enter an anti-collision cycle with the IC card, and finally can acquire the ID of the IC chip through 1 or two anti-collision operations, thus ending;
when the MCU acquires the ID of the finished IC card chip, the ID is compared with an internal white list for verification, and judgment is carried out according to a configured time period, if the IC card chip is a legal IC tag, the MCU controls the buzzer to sound once, and then the blue-green state lamp flickers once;
the IC card is based on the RFID radio frequency technology, has the advantages of copy prevention and high safety, and specifically comprises the following safety indexes:
(1) 32-bit chip serial number;
(2) the security level control is carried out, and one card is used for one secret;
(3) the safety guarantee technology (triple anti-counterfeiting authentication and read-write permission control) of reliable data communication;
(4) customizing an encryption verification process, wherein no circulation chip exists in the market;
the anti-copy IC card comprises a part of storage area which can not be read randomly, a security algorithm and a special mark calculated by a special encryption mechanism are stored in the anti-copy IC card, and an adaptive IC card reader can carry out external authentication on the card and authenticate whether the card has the special mark, so that anti-copy guarantee is further provided on a software layer.
Preferably, the anti-copy function of the IC card is divided into hardware physical layer anti-copy function and software algorithm layer anti-copy function.
Preferably, in the IC card anti-collision cycle, the PCD can obtain all the anti-copy card 8-byte card numbers by sending the special command 68.
Preferably, the copy protection IC card to enter ACTIVE STATE needs to send a special command ACTIVE _ SELECT (0x69) to enter ACTIVE STATE.
Preferably, the anti-copy IC card comprises key verification and key verification, wherein the cipher is required to be dispersedly calculated and encrypted, and then the cipher is imported into the PICC for verification through different exclusive instructions FA, 01 and 4 bytes of dispersedly encrypted keys.
Preferably, a secure encryption processing mode is adopted, each card has a unique secret key, and the unique secret key is synthesized by a unique secure encryption algorithm and mechanisms such as a card physical UID and a unique identifier.
Preferably, because one card has one secret, the secret key of each card is different, and the software encryption mechanism is unique, even if the secret data is obtained, the encryption mechanism of the secret key is difficult to find out.
The invention has the following beneficial effects:
this prevent duplicating RFID card based on physical layer and algorithm layer joint control combines through the simple function of ordinary IC card reader and access control ware, possesses two kinds of mode card reader modes and all-in-one mode, and wherein the all-in-one mode just combines ordinary IC card reader function and simple access control ware's function to it encrypts to provide exclusive customization card and encryption algorithm, makes the difficult cracking of card data, strengthens the card and can not duplicate the rank.
The two working modes both support strong configuration cards, and the working mode of the card reader is that the strong configuration cards are used, and the card reader is configured according to actual conditions, so that the card reader can adapt to various controllers; the all-in-one machine mode provides a time management function and an autonomous door opening function, has a unique time period management function, and can be freely set by a user to freely control the card swiping door opening time; the time is freely and flexibly controlled, the time is divided into 8 time configuration modes, each mode supports working days and rest days, a certain time period in one day can be freely controlled, and the time control is accurate to minutes.
Drawings
FIG. 1 is a schematic diagram of the structure of an IC card reader of the present invention;
FIG. 2 is a schematic diagram of the copy protection function of the present invention;
FIG. 3 is a drawing schematic diagram of the card sorter of the present invention;
fig. 4 is a schematic diagram of the collision avoidance cycle of the present invention;
FIG. 5 is a schematic diagram of an anti-copy card activation of the present invention;
FIG. 6 is a schematic view of a card reading process according to the present invention;
FIG. 7 is a diagram illustrating conventional key encryption according to the present invention;
FIG. 8 is a diagram of key encryption according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, an anti-copy RFID card based on joint control of a physical layer and an algorithm layer includes an IC card reader and an IC card, the IC card reader includes an MCU microcontroller, an RFID rf chip, an RTC, a blue-green status lamp, a buzzer, a key backlight, a 12V power interface, a wiegand input, a wiegand output, and a serial port, and a 3 × 4 matrix keyboard is installed outside the IC card reader; the IC card reader is sensitive and stable in card reading, and the card reading distance is 0-8 CM; the working mode of the card reader can be freely set, the strong and special functions of switching between the integrated machine mode and the card reader mode are supported, the integrated machine mode supports the super-strong and flexible card configuration function and the special time period management function, a user can freely set the mode and freely control the card swiping and door opening time, the time is freely and flexibly controlled, the time is divided into 8 time configuration modes, each mode supports working days and rest days, a certain time period in one day can be freely controlled, the time control is accurate to minutes, the special card reader mode is compatible with most controllers in the market through the super-strong and flexible card configuration function, and the inventory is effectively reduced.
The MCU microcontroller controls the RFID radio frequency chip to output a 13.56Mhz radio frequency signal to the passive IC card in a single way; the passive IC card obtains magnetic field energy through coupling, energy is provided for a chip of the IC card, and the IC card starts to work; firstly, the MCU controls the RFID radio frequency chip to send a signal, when the IC card meets the signal, the signal is signed ATQA, then the MCU receives the ATQA, receives and sends an anti-collision signal which accords with 14443-2, starts to enter an anti-collision cycle with the IC card, and finally can acquire the ID of the IC chip through 1 or two anti-collision operations, thus ending; in the IC card anti-collision cycle, the PCD only needs to send a special command 68, and the 8-byte card number of the anti-copy card can be completely acquired; when the anti-copy card is in an anti-collision cycle, the PCD sends non-68 instructions such as standard 93, 95, 97 and the like, the card returns error information to the PCD, and exits to return to the IDLE state; when the anti-copy card is in an anti-collision loop, the PCD sends a private command 68, and the card directly returns 4 bytes each time, not according to ISO14443A protocol, but 8 bytes at a time, with a proprietary special design.
When the MCU acquires the ID of the finished IC card chip, the ID is compared with an internal white list for verification, and judgment is carried out according to a configured time period, if the IC card chip is a legal IC tag, the MCU controls the buzzer to sound once, and then the blue-green state lamp flickers once;
the IC card is based on the RFID radio frequency technology, has the advantages of copy prevention and high safety, and specifically comprises the following safety indexes:
(1) 32-bit chip serial number;
(2) the security level control is carried out, and one card is used for one secret;
(3) the safety guarantee technology (triple anti-counterfeiting authentication and read-write permission control) of reliable data communication;
(4) customizing an encryption verification process, wherein no circulation chip exists in the market;
the IC card reader IS compatible with a common IS014443A/B protocol card in the market and supports a unique anti-copy card, and card data IS encrypted by adopting a unique customized card and an encryption algorithm, so that the card data IS not easy to crack, and the non-copy level of the card IS enhanced;
the IC card anti-copy function comprises hardware physical layer anti-copy and software algorithm layer anti-copy;
the anti-re-card chip adopts CMOS EEPROM technology, contains encryption control and communication logic circuit, and is a multipurpose non-contact radio frequency card chip with extremely high confidentiality and logic processing function. The chip ensures the uniqueness of the card and has high safety.
Regarding the physical card number, the copy-proof card chip is a dedicated chip, which is 13.56m Hz compared with the conventional S50 card, S70 card and CPU card on the market, but the copy-proof card is different in card searching, anti-collision and card selecting mechanisms. In the unique card searching, anti-collision and card selecting mechanism, the conventional RFID card reader and the conventional card sender can not recognize, the risk that the physical UID of the card is easy to copy is avoided preliminarily, the NFC can directly solve the password and data of the conventional S50 card on the market, the password of the whole project card can be known after the copying and the decoding can be realized by using the common S50 card, and the common CPU card adopts the same mechanism as the common S50 card, so that the physical UID can be copied, the copy and encryption can be prevented, and the unique card searching, card selecting and anti-collision mechanisms can not recognize the physical UID by the NFC; in the conventional iso14443A card searching process, a PICC is in an IDLE State, when the PCD activates the PICC, the PCD listens to commands and can recognize REQA (0x26) and WUPA (0x52) commands, then State transition is made, and an anti-copy card is subjected to special processing at the layer, only the special command ACTIVE (0x66) command is recognized, the non-ACTIVE (0x66) card is not recognized, errors are directly fed back, and the card can enter READY State only when the correct ACTIVE (0x66) command is received.
When the copy-prevention IC card is to enter ACTIVE STATE, a special command ACTIVE _ SELECT (0x69) needs to be sent to enter ACTIVE STATE;
the anti-copy IC card comprises a part of memory area which can not be read randomly, a security algorithm and a special mark calculated by a special encryption mechanism are stored in the anti-copy IC card, and an adaptive IC card reader can carry out external authentication on the card to authenticate whether the card has the special mark or not, so that anti-copy guarantee is further provided on a software layer.
The anti-copy IC card comprises key verification and key verification, wherein a cipher is required to be subjected to scattered calculation on a cipher text, then the cipher text is subjected to different exclusive instructions FA, 01 and a 4-byte scattered encrypted key, and then the PICC verification is conducted.
The card verification system is provided with an exclusive verification mechanism and a unique encryption verification process, which are different from the verification of common cards on the market, and further, the risk of copying the card is effectively avoided;
by adopting a secure encryption processing mode, each card has a unique secret key which is synthesized by a unique secure encryption algorithm, a card physical UID, a special identification and other mechanisms.
Because one card has one secret, the secret key of each card is different, and the software encryption mechanism is unique, even if the password data is obtained, the encryption mechanism of the secret key is difficult to find.
In RSA, the conventional encryption process is to encrypt data directly, but the invention adopts 3DES to encrypt the first layer, and then uses RSA public key to encrypt the second layer.
The invention controls the RFID to output radio frequency signals by the MCU, obtains magnetic field energy by coupling with an IC card (IC tag), provides energy for a chip of the IC card, obtains an IC card chip ID, realizes a strong time control function by a strong configuration card, and adopts a unique customized card and an encryption algorithm for encryption, so that the card data is not easy to crack, and the irreproducible grade of the card is enhanced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A duplication prevention RFID card based on joint control of a physical layer and an algorithm layer comprises an IC card reader and an IC card, and is characterized in that: the IC card reader comprises an MCU (microprogrammed control Unit) microcontroller, an RFID (radio frequency identification) radio frequency chip, an RTC (real time clock), a blue-green state lamp, a buzzer, a key background lamp, a 12V power interface, a Wiegand input, a Wiegand output and a serial port, wherein a 3 × 4 matrix keyboard is arranged outside the IC card reader;
the MCU microcontroller controls the RFID radio frequency chip to output a 13.56Mhz radio frequency signal to the passive IC card in a single way; the passive IC card obtains magnetic field energy through coupling, energy is provided for a chip of the IC card, and the IC card starts to work; firstly, the MCU controls the RFID radio frequency chip to send a signal, when the IC card meets the signal, the signal is signed ATQA, then the MCU receives the ATQA, receives and sends an anti-collision signal which accords with 14443-2, starts to enter an anti-collision cycle with the IC card, and finally can acquire the ID of the IC chip through 1 or two anti-collision operations, thus ending;
when the MCU acquires the ID of the finished IC card chip, the ID is compared with an internal white list for verification, and judgment is carried out according to a configured time period, if the IC card chip is a legal IC tag, the MCU controls the buzzer to sound once, and then the blue-green state lamp flickers once;
the IC card is based on the RFID radio frequency technology, has the advantages of copy prevention and high safety, and specifically comprises the following safety indexes:
(1) 32-bit chip serial number;
(2) the security level control is carried out, and one card is used for one secret;
(3) the safety guarantee technology (triple anti-counterfeiting authentication and read-write permission control) of reliable data communication;
(4) customizing an encryption verification process, wherein no circulation chip exists in the market;
the anti-copy IC card comprises a part of storage area which can not be read randomly, a security algorithm and a special mark calculated by a special encryption mechanism are stored in the anti-copy IC card, and an adaptive IC card reader can carry out external authentication on the card and authenticate whether the card has the special mark, so that anti-copy guarantee is further provided on a software layer.
2. The anti-copy RFID card based on joint control of a physical layer and an algorithm layer as claimed in claim 1, wherein: the anti-copy function of the IC card comprises hardware physical layer anti-copy function and software algorithm layer anti-copy function.
3. The anti-copy RFID card based on joint control of a physical layer and an algorithm layer as claimed in claim 1, wherein: in the IC card anti-collision cycle, the PCD only needs to send a special command 68, and the 8-byte card number of the anti-copy card can be completely acquired.
4. The anti-copy RFID card based on joint control of a physical layer and an algorithm layer as claimed in claim 1, wherein: the copy protection IC card needs to send a special command ACTIVE _ SELECT (0x69) to enter ACTIVE STATE to enter ACTIVE STATE.
5. The anti-copy RFID card based on joint control of a physical layer and an algorithm layer as claimed in claim 1, wherein: the anti-copy IC card comprises key verification and key verification, wherein a cipher is required to be subjected to scattered calculation on a ciphertext, then the cipher is subjected to PICC verification through different exclusive instructions FA, 01 and a 4-byte scattered encrypted key.
6. The anti-copy RFID card based on joint control of a physical layer and an algorithm layer as claimed in claim 1, wherein: by adopting a secure encryption processing mode, each card has a unique secret key which is synthesized by a unique secure encryption algorithm, a card physical UID, a special identification and other mechanisms.
7. The anti-copy RFID card based on joint control of a physical layer and an algorithm layer as claimed in claim 1, wherein: because one card has one secret, the secret key of each card is different, and the software encryption mechanism is unique, even if the password data is obtained, the encryption mechanism of the secret key is difficult to find.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011092582.2A CN112215323A (en) | 2020-10-13 | 2020-10-13 | Anti-copy RFID card based on joint control of physical layer and algorithm layer |
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| CN202011092582.2A CN112215323A (en) | 2020-10-13 | 2020-10-13 | Anti-copy RFID card based on joint control of physical layer and algorithm layer |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101350058A (en) * | 2008-05-26 | 2009-01-21 | 北京飞天诚信科技有限公司 | Method for self-adapting double-interface IC card protocol mode |
| EP2073433A1 (en) * | 2007-12-18 | 2009-06-24 | Systemes Et Technologies Identification | Remote securing of control and identification UHF radio transactions |
| CN102129730A (en) * | 2010-01-14 | 2011-07-20 | 上海峥创电子有限公司 | Non-contact CPU (Central Processing Unit) card entrance guard reader |
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2020
- 2020-10-13 CN CN202011092582.2A patent/CN112215323A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2073433A1 (en) * | 2007-12-18 | 2009-06-24 | Systemes Et Technologies Identification | Remote securing of control and identification UHF radio transactions |
| CN101350058A (en) * | 2008-05-26 | 2009-01-21 | 北京飞天诚信科技有限公司 | Method for self-adapting double-interface IC card protocol mode |
| CN102129730A (en) * | 2010-01-14 | 2011-07-20 | 上海峥创电子有限公司 | Non-contact CPU (Central Processing Unit) card entrance guard reader |
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