CN101727683A - Public transport IC card identity identifying and authenticating system - Google Patents

Abstract

The invention belongs to the technical field of RFID radio frequency identification, and is a system for performing identity authentication on an IC card through the cooperative action of an RFID radio frequency identification label and an IC card, which can significantly improve the security of stored value of the IC card. The system includes: (1) IC card system: the IC card adopts the logical encryption card of MiFare1 standard, and the card reader adopts the highly integrated MF RC500 card reader applied to 13.56MHz non-contact communication; (2) ID card system: The ID card adopts the MiFare1 logical encryption card integrated with the RFID radio frequency identification tag, and the card reader adopts the RFID long-distance radio frequency technology. Compared with the existing bus system, the user only needs to wear the ID card to realize identity authentication when swiping the card, which not only ensures the security of the stored value of the IC card, but also meets the needs of the bus system for convenience. Therefore, the system has significant practical significance for users and bus companies, and is of great promotion value in the field of public transport.

Description

Bus IC card identification authentication system

technical field

The invention belongs to the technical field of RFID radio frequency identification, and is a system for authenticating an IC card through the cooperative action of an RFID tag and an IC card, which can realize the identity authentication of the IC card and improve the security of stored value of the IC card.

Background technique

The current bus IC card is a logical encryption card of MiFarel TYPE A standard developed by Phliips, and the corresponding card reader is a highly integrated MF RC500 card reader applied to 13.56MHz contactless communication. This card reader IC series utilizes advanced modulation and demodulation concepts to fully integrate all types of passive contactless communication methods and protocols at 13.56MHz. MF RC500 can be conveniently used in various contactless communication applications based on ISO/IEC 1A.A.43A standard and requiring low cost, small size, high performance and single power supply. However, the urban public transportation IC card toll collection system involves a wide range of areas, many service units, and a huge number of users. Although the internal chip data security function of the bus IC card is advanced, once the IC card is lost or stolen, it is difficult to recover the amount in the card. One is because the environment of the bus is harsh and the mobility is high, so the preset password inside the IC card chip is not used to realize the confidentiality function of the stored value of the IC card, so as to prevent the increase of the ticket checking process and stop time. The second is that because the storage space of the vehicle-mounted card reader is limited, it cannot store the password set by the user and all the loss report lists, so many provinces and cities do not have a loss report system. Based on the above two reasons, the security of the stored value of the current bus IC card is not guaranteed.

Contents of the invention

Purpose of the invention:

This mechanism realizes the bus IC card identity verification system through a simple binding method of IC card and radio frequency tag ID card. Among them, the identity information of the IC card is stored in the ID card, and through the interactive authentication of the ID card reader and the IC card reader, it can change the defect that the IC card in the current public transportation system is not registered, and it is difficult to report the loss when it is lost. At the same time, it is expected to replace the IC card. The real-name registration mechanism in the field of small consumption such as cards protects the privacy of consumers.

After the novelty search of scientific and technological literature, no patents or literature reports on the authentication system through this binding mechanism have been found at home and abroad.

Technical constitution of the present invention:

This mechanism is aimed at the actual application of the IC card system in the field of public transportation, and a system with IC card reading and writing technology and RFID radio frequency long-distance reading and writing technology as the core system is constructed. On the basis of not changing the original IC card reading and writing process as much as possible, a system that meets the authentication requirements is realized. The specific implementation method is to insert the IC card identity authentication routine after the IC card confidentiality authentication and before the transaction on the premise of the existing IC card reading and writing process. According to the authentication result, the IC card reader chooses to continue the transaction or give up the transaction. , so as to realize the authentication function.

Technical scheme of the present invention:

Bus IC card identification authentication system, including ID card system, IC card system, its characteristics are:

The ID card system includes:

ID card reader, which continuously reads ID cards within its effective range, and is responsible for all identity authentication processes;

ID card, which stores the identity verification information of the IC card inside, and is used to authenticate the identity of the IC card;

Request card reading, the ID card reader continuously sends request card reading signals until an ID card enters its limited range;

Anti-collision operation, when there are multiple ID cards in the effective range, take this measure to prevent data errors caused by multiple cards being read at the same time;

Select the card, after performing the anti-collision operation, you must execute the selection card to establish communication with the selected card;

Triple authentication, in order to ensure the legitimacy of the card itself and the legitimacy of the read and write operations, and prevent the card from being forged, the authentication operation must be carried out between the card and the card reader;

Interrupt the system, receive the identity authentication request interruption signal from the IC card reader, and send the identity authentication response interruption signal to the IC card reader after the authentication is completed, so as to realize interaction;

ID information queue, read and save legal ID card information within the valid range in the data area of the ID card reader for use in further authentication;

The serial communication interface receives the information flow from the IC card reader, and sends back the response information after the authentication process is completed, so as to realize the authentication;

IC card identity authentication, the ID card reader traverses the ID information queue by receiving the IC card identity information requested from the IC card reader for authentication, if there is the authentication information corresponding to the request, the authentication passes, otherwise, the authentication fails.

So far the functions of the ID card system have been realized.

IC card system includes:

IC card reader, to complete the information reading of IC card and the processing of information;

IC card, which stores the user's transaction information, including the balance in the card, etc.;

Request card reading, the IC card reader continuously sends request card reading signals until an IC card enters its limited range;

Anti-collision operation, when there are multiple IC cards in the effective range, take this measure to prevent data errors caused by multiple cards being read at the same time;

Select the card, after performing the anti-collision operation, you must execute the selection card to establish communication with the selected card;

Triple authentication, in order to ensure the legitimacy of the card itself and the legitimacy of the read and write operations, and prevent the card from being forged, the authentication operation must be carried out between the card and the card reader;

Interrupt the system, after the authentication of the IC card itself is completed, send an identity authentication request interruption signal to the ID card reader, and wait to receive the identity authentication response interruption signal from the ID card reader to realize interaction;

Serial communication interface, send the identity information (card number) of the IC card to the ID card reader, and receive the identity authentication response information from the ID card reader;

Identity authentication processing, according to the identity authentication result fed back by the ID card reader, if the authentication result is passed, continue to execute the IC card transaction process, otherwise, end the transaction, return to the card reading request stage, and report an error.

The transaction process is mainly the billing process of the bus IC card.

So far the functions of the IC card system have been realized.

Beneficial effects of the present invention:

This system combines the shortcomings of the original bus IC card system that cannot communicate with the main database in real time, making it difficult to report the loss effectively, and combines the ID card system with the original IC card system to realize identity authentication before IC card transactions functions, thereby achieving the goal of effectively protecting the interests of IC card users.

Description of drawings

Figure 1 System composition diagram

Figure 2 system flow chart

In the figure: 1. ID card system 2. IC card system 3. Request card reading 4. Anti-collision operation 5. Select card 6. Triple authentication 7. Interrupt system 8. Serial communication interface 9. IC card authentication 10. Identity Authentication processing 11. Transaction process 12. ID information queue 13. ID card reader 14. ID card 15. IC card reader 16. IC card

Detailed ways

Below in conjunction with technical scheme of the present invention and accompanying drawing and description of drawings, the specific embodiment of the present invention will be further described:

1. Composition of the system

The system is shown in the figure. The core part of the system is the mutual authentication of ID card system 1 and IC card system 2 . The ID card reader 13 in the ID card system 1 transmits the signal requesting the card reader 3, and when an ID card 14 enters the effective reading range of the ID card reader 13, it is judged whether there are multiple ID cards 14, if there is When there are multiple ID cards 14, execute anti-collision operation 4, otherwise directly enter the stage of triple authentication 6, when the anti-collision operation 4 is completed, enter the stage of selecting cards 5, and perform triple authentication 6 after the operation results of card 5 are selected , when confirming that ID card 14 is legal card, then read the authentication information of the IC card 16 of storage in ID card 14, and information is stored in ID information queue 12, so far completes the function of ID card system 1; The IC card reader 15 of the card system 2 transmits a signal requesting card reading 3. When an IC card 16 enters the effective reading range of the IC card reader 15, it is judged whether there are multiple IC cards 16. When the IC card is 16, execute the anti-collision operation 4, otherwise directly enter the stage of triple authentication 6, when the anti-collision operation 4 is completed, enter the stage of selecting the card 5, and perform triple authentication 6 after selecting the operation result of the card 5, when When confirming that the IC card 16 is a legal card, at first utilize the interrupt system 7 to send the IC card identity authentication 9 request signal to the ID card, then send the IC card identity authentication 9 request to the ID card reader 13 through the serial communication interface 8, and transmit the IC card identity authentication 9 request signal. The card number information of the card 16, and then wait for the completion of the authentication of the ID card system 1. When the authentication response from the ID card system 1 is received, further operations are performed according to the received response result, and if the response result is "verified", the normal IC card 16 transaction flow 11 is executed.

2. ID card system 1

As an important part of the system, the ID card system 1 adopts RFID long-distance radio frequency technology. On the basis of completing request card reading 3, anti-collision operation 4, card selection 5, and triple authentication 6, the effective range of the system is extended to In order to ensure that before the IC card 16 is swiped by the cardholder, the ID card 14 information bound to it has been stored in the ID information queue 12, and the serial communication interface can be used after the IC card identity authentication 9 request is interrupted. 8 The IC card number 16 information received, quickly complete the IC card identity authentication 9.

3. IC card system 2

As another important part of the authentication system, after completing request card reading 3, anti-collision operation 4, card selection 5, and triple authentication 6, send an IC card identity authentication 9 request interruption signal to the ID card reader 13, and then pass the serial The line communication interface 8 transmits the card number information of the IC card 16 to the ID card reader 13 for authentication, and then waits for the completion of the authentication. After receiving the identity authentication response signal of the ID card reader 13, according to the authentication result, if the authentication is passed, the normal IC card 16 transaction process 11 is continued, otherwise, the transaction is ended and an error is reported.

4. Request card reading 3

This operation is mainly caused by the card reader continuously transmitting the card reading request 3 signal, which is used as the activation signal of the card. When the card enters the effective range, when there is a card to respond, the function will end.

5. Anti-collision operation 4

When more than one IC card 16 enters the IC card reader 15 or the ID card 14 enters within the effective range of the ID card reader 13, overlapping of cards may occur so as to cause data errors, and the anti-collision operation The main purpose of 4 is to try to avoid such mistakes. It can be guaranteed that there is only one card to be read, and other unselected cards are in idle mode, waiting for the next read, and return the serial number of the selected card at the same time.

6. Select card 5

When the anti-collision operation 4 is successful, the serial number information of a card will be returned, and the card selection 5 operation will select the card according to the serial number, and establish a connection between the card and the card reader.

7. Triple authentication6

After selecting the card to be processed, the reader determines the sector number to be read and written and selects the key, then takes out the key and access conditions from the sector, sends a random number to the card reader, and reads The card reader generates a response according to the key and the additional random number, and the response and another random number are sent to the card, and the card responds to the card reader according to the response and the random number, and the card reader verifies the response, and then Communications made will be secure.

8. Interrupt System 7

This part is the key of the system, and is the key to realize interaction and authentication between ID card system 1 and IC card system 2 . The interrupt system includes IC card identity authentication interrupt request, IC card identity authentication response, serial communication interface interrupt function. Since the IC card system 2 and the ID card system 1 are two independent working subjects when there is no card swiping action, the continuous query greatly reduces the efficiency of the system, and it is impossible to adapt to such occasions, and the interruption mechanism can be authenticated when needed At the moment of request and response, the work of another system is interrupted to complete the corresponding work, and when the work is completed, the interrupted system can continue the current work. Therefore, the interrupt system satisfies our needs very well and is the key to the system.

9. Serial communication interface 8

After the interrupt system 7 sends an interrupt or receives an interrupt signal, it will send or receive corresponding data through the serial communication interface 8, so the serial communication interface is the data channel between the ID card system 1 and the IC card system, and is to complete the second An important part of data interaction between users.

10. IC card authentication 9

This certification is that after the IC card reader 15 reads the IC card 16 safely, the IC card identity authentication 9 interrupt request signal is sent to the ID card reader 13 by the interrupt system 7, and the IC card is sent to the ID card reader 13 by the serial communication interface 8. 16 card number information is sent to ID card reader 13, ID card reader 13 then prepares to receive IC card 16 card number information after receiving IC card identity authentication 9 interrupt request signals, after receiving card number information, then starts to read ID information Check whether there is verification information corresponding to the card number in the queue 12, if it exists, the identity authentication is passed, otherwise the identity authentication fails, an interrupt response signal is sent to the IC card reader 13, and the authentication result is sent back. The IC card reader 13 selects further operations according to the received authentication result information, and the IC card identity authentication ends.

11. Identity authentication processing 10

After the IC card identity authentication 9 ends, the IC card reader 15 must complete further work according to the result of authentication: if the authentication result is that the authentication is passed, then the normal IC card 16 transaction process 11 will be completed, if the authentication fails, then end the transaction, and report an authentication error.

12. Transaction Process 11

After the IC card identity authentication is successful, the IC card 16 should perform the normal operations of reading the card balance, deducting fees, and writing back the balance. This is the normal transaction process of the IC card 16 .

13. ID information queue 12

After the ID card reader 13 correctly reads an ID card 14, then this piece of information is used as a record, and when multiple records are stored in the ID card reader 13, the ID information queue is formed according to the principle of FIFO, It is used in case of IC card identity authentication.

14. ID card reader 13

As an important physical component of the ID card system 1, when there is no IC card identity authentication 9, the ID card reader 13 will complete the function of the valid ID card 14 within the predetermined reading range, and will complete the request card reading 3, anti-collision Operation 4, select card 5, triple authentication 6, then store legal ID card 14 information in ID information queue 12 for authentication. When IC card identity authentication 9 requests are arranged, then start identity authentication routine: receive the card number information from serial communication interface 8, use this information and the information in ID information queue 12 to carry out matching authentication, after authentication finishes, to IC card The card reader 15 sends an identity authentication response interrupt request signal, and sends back authentication result information through the serial communication interface 8, and the identity authentication routine ends. The work of searching for the ID card 14 is resumed.

15. ID card 14

ID card 14 is a read-only radio frequency tag, which is powered by card reader induction and reads out the unique card number stored in the chip EEPROM and other content stored in the chip. The card number is written once before sealing the card, and after sealing the card It cannot be changed, and the content can be read and written after the card is sealed. Passive and non-contact are the two most prominent features of the chip. The radio frequency interface circuit is the key core technology. It receives radio frequency energy from the card reader, generates power and clock for the chip, and uses phase shift keying and load amplitude modulation, etc. The technology realizes the wireless communication between the card and the card reader. The non-contact ID card is easy to operate, fast and reliable.

16. IC card reader 15

The hardware circuit of the non-contact IC card reader mainly includes: microprocessor, radio frequency IC card reading and writing module, communication conversion module, antenna circuit, etc. The card reading and writing module is the core of the whole card reader, it will complete the reading and writing All necessary functions of the contactless IC card, including RF signal generation, modulation, demodulation, triple authentication6 and anti-collision operation4 etc. The microprocessor controls the read and write operations by reading and writing the special memory registers of the core of the non-contact IC card reading and writing module. The software design of the card reader is to use the PIC assembler to complete the card operation.

17. IC card 16

The IC card 16 is a passive body. The IC card is also called a radio frequency card. It is composed of an IC chip and an induction antenna, and is packaged in a standard PVC card. The chip and the antenna do not have any exposed parts. When the reader reads and writes the card, the signal sent by the reader is composed of two parts superimposed: one part is the power signal, which is received by the card and resonates with its own L/C to generate an instantaneous energy. supply chip work. The other part is combined with the data signal to direct the chip to complete data modification, storage, etc., and return it to the reader to complete a read and write operation.

Claims (8)

1. The bus IC card identification authentication system comprises an ID card system (1), an IC card system (2), and is characterized in that the ID card system (1) comprises: ID card reader (13), this card reader constantly reads the ID card (14) within its effective range, and is responsible for the processing process of all identity authentication; An ID card (14), which internally stores identity verification information of the IC card (16), is used for authenticating the identity of the IC card (16); Request card reading (3), the ID card reader (13) continuously sends the request card reading signal until an ID card (14) enters its limited range; Anti-collision operation (4), when there are multiple ID cards (14) in the effective range, take this measure to prevent data errors caused by multiple cards being read at the same time; Select the card (5), after performing the anti-collision operation (4), you must execute the selected card to establish communication with the selected card; Triple authentication (6), in order to ensure the legitimacy of the card itself and the legitimacy of the read and write operations, and prevent the card from being forged, the authentication operation must be performed between the card and the card reader; The interruption system (7) receives an identity authentication request interruption signal from the IC card reader (15), and sends an identity authentication response interruption signal to the IC card reader (15) after the authentication is completed to realize interaction; The ID information queue (12) reads and saves the legal ID card (14) information within the effective range in the data area of the ID card reader (13), for use during further authentication; The serial communication interface (8) receives the information flow from the IC card reader (15), and sends back the response information after the authentication process ends, thereby realizing the authentication; IC card identity authentication (9), ID card reader (13) traverses the ID information queue (12) by receiving the IC card (16) identity information of the request authentication from IC card reader (15), if there is this If the corresponding authentication information is requested, the authentication is passed; otherwise, the authentication fails. So far the functions of the ID card system have been realized. IC card system (2) includes: IC card reader (15), completes the information reading of IC card (16), and the processing work of information; IC card (16), which stores the transaction information of the user, including the balance in the card, etc.; Request card reading (3), IC card reader (15) continuously sends request card reading signal until IC card (16) enters its limited range; Anti-collision operation (4), when there are multiple IC cards (16) in the effective range, take this measure to prevent data errors caused by multiple cards being read at the same time; Select the card (5), after performing the anti-collision operation (4), you must execute the selected card to establish communication with the selected card; Triple authentication (6), in order to ensure the legitimacy of the card itself and the legitimacy of the read and write operations, and prevent the card from being forged, the authentication operation must be performed between the card and the card reader; Interruption system (7), after the authentication of card itself is completed, sends identity authentication request interruption signal to ID card reader (13), and waits to receive the identity authentication response interruption signal from ID card reader (13), realizes interact; The serial communication interface (8) sends the identity information (card number) of the IC card (16) to the ID card reader (13), and receives the identity authentication response information from the ID card reader (13); Identity authentication process (10), according to the identity authentication result that ID card reader (13) feeds back, if authentication result is to pass authentication, then continue to carry out the transaction process of IC card (16), otherwise, end this transaction, return request card reading stage, and report bugs. The transaction flow (11) is mainly the billing flow of the bus IC card (16). 2. The bus IC card identity authentication system is characterized in that: the system realizes the identity authentication of the IC card by binding the IC card and the ID card. 3. the public transport IC card identity authentication system according to claim 1, is characterized in that: The ID card system (1) realizes the functions of card reading request (3), anti-collision operation (4), card selection (5), triple authentication (6), IC card identity authentication (9), including the interruption system (7), Serial communication interface (8), ID information queue (12), ID card reader (13), ID card (14) assembly, or adopt the ID card system that meets claim 1. 4. public transport IC card identity authentication system according to claim 1, is characterized in that: IC card system (1) has realized request card reading (3), anti-collision operation (4), selects card (5), triple authentication (6), identity authentication process (10), transaction process (11) function, comprise interruption system (7), serial communication interface (8) IC card reader (15), IC card (16) assembly, or adopt The IC card system according to claim 1. 5. the public transport IC card identity authentication system according to claim 1, is characterized in that: IC card authentication (9) will utilize the interrupt system (7) in the system, and the function of serial communication interface (8) passes through the data interaction of ID card reader (13) and IC card reader (15), according to The IC card reader (15) transmits the card number information of the IC card (16), queries the ID information queue (12), performs identity authentication, and returns authentication result information to the IC card reader (15), thereby realizing IC card identity authentication (9), or adopt the IC card identity authentication (9) that meets the claims. 6. The bus IC card identity authentication system according to claim 1, characterized in that: Identity authentication processing (10) refers to that after the IC card identity authentication (9) is completed, the authentication result information is sent back to the IC card reader (15), and the processing measures that the IC card reader (15) should take, or adopt Identity authentication processing in accordance with claim 1. 7. The bus IC card identity authentication system according to claim 1, characterized in that: The ID card reader (13) and the ID card (14) are the main components of the hardware of the ID card system (1), and the ID card reader (13) will realize the request card reading (3) to the ID card (14). , anti-collision operation (4), select card (5), triple authentication (6), read ID card (14) information and store it in ID information queue (12), or adopt the ID card reading that meets claim 1 device and ID card. 8. The bus IC card identity authentication system according to claim 1, characterized in that: The IC card reader (15) will complete the card reading request (3), anti-collision operation (4), card selection (5), triple authentication (6) functions, and also include the interrupt system (7), serial communication interface (8), identity authentication processing (10), or adopting an IC card reader (15) in accordance with claim 1.

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