JP2006338422A - Data transmission/reception system, noncontact ic chip, mobile terminal, information processing method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To safely and easily transfer data. <P>SOLUTION: Areas of the same use are formed in memories of noncontact IC chips 1, 2, and the same key is allocated thereto. When transferring data from the noncontact IC chip 1 to the noncontact IC chip 2, an intrinsic ID is issued to the noncontact IC chip 1, and one key is generated based on the key of the area of controlling data of a transfer object. The data of the transfer object enciphered by the key are transmitted to a reader writer 3. When the noncontact IC chip 2 is held over a reader writer 3, the intrinsic ID same to that issued to the noncontact IC chip 1 is set, and one key is generated based on the set intrinsic ID, and the key allocated to the area of controlling the data of the transfer object. The data of the transfer object using the generated key are decoded in the noncontact IC chip 2. The present invention is applicable to a noncontact IC chip. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a data transmission / reception system, a non-contact IC chip, a portable terminal, an information processing method, and a program, and in particular, securely stores data stored in a predetermined area from a data movement source to a data movement destination. The present invention relates to a data transmission / reception system, a non-contact IC chip, a portable terminal, an information processing method, and a program that can be easily moved.

  In recent years, contactless IC chips such as FeliCa (registered trademark) are becoming more familiar because of the fact that they have been installed in mobile phones. The user can confirm the information on the commuter pass by paying the price at the time of purchase using a mobile phone equipped with a non-contact IC chip, or by holding the mobile phone over a reader / writer provided in the ticket gate at the station. Can be.

  By the way, it is necessary to secure a means for moving data stored in one non-contact IC chip to another non-contact IC chip as it becomes more familiar. For example, when changing the model of a mobile phone, information on electronic money and commuter passes stored in a non-contact IC chip installed in an old terminal that is no longer used is used as a non-contact IC chip installed in a new terminal. Need to be moved to.

For example, Patent Document 1 discloses a technique for moving data stored in a non-contact IC chip.
JP 2002-140664 A

  When transferring data stored in a non-contact IC chip to another non-contact IC chip, it is particularly necessary to keep it confidential, and it is necessary to prevent duplication of data to other than the non-contact IC chip at the destination. There is. It is also necessary to prevent data analysis by malicious persons.

  Furthermore, it is preferable from the viewpoint of convenience that such a movement can be performed at a user's favorite timing. As mentioned above, if you want to move data from your terminal equipped with a non-contact IC chip to your other terminal, you have to prepare two terminals at the same time and hold them over a reader / writer, Naturally, this is not possible when two terminals cannot be prepared simultaneously.

  In addition, if the user of a terminal equipped with a non-contact IC chip that is the source of data is different from the user of a terminal that is equipped with a non-contact IC chip that is the destination of movement, the two terminals must be held over a reader / writer at the same time. If so, the two users need to be together to move the data.

  The present invention has been made in view of such a situation, and enables data stored in a predetermined area to be moved safely and easily.

  The data transmission / reception system of the present invention comprises a first non-contact IC chip that is a data movement source and a second non-contact IC chip that is a data movement destination. Each of the first and second contactless IC chips has a data area for the same purpose in a built-in memory.

  Here, the data area having the same application means an area in which the same type of data is stored and data is read and written by the same command from the reader / writer. When entry / exit of a ticket gate at a station is managed by the first and second non-contact IC chips, for example, information (ID etc.) of the ticket gates entered in the area formed on the first non-contact IC chip is used. The storage area and the storage area for the information on the ticket gate that has entered the area of the second contactless IC chip are data areas for the same purpose. The data area includes a system and an area described later. When the system formed on the first non-contact IC chip, the system with the same identification information as the identification information attached to the area, and the area are also formed on the second non-contact IC chip, Systems and areas with the same identification information are data areas that have the same application.

  The first contactless IC chip constituting the data transmission / reception system encrypts the data to be moved based on the key assigned to the data area where the data to be moved is managed and the issued identification information. A first generation means for generating a movement key used for the data, and encrypting the movement target data using the movement key generated by the first generation means, and the encrypted movement target data is stored in the reader / writer. Transmission means for transmitting.

  On the other hand, when the same identification information issued to the first contactless IC chip is transmitted from the reader / writer, the second contactless IC chip stores the transmitted identification information. Based on the key assigned to the data area of the same use as the data area of the first contactless IC chip in which the data to be moved is managed, and the identification information stored by the storage means Second generation means for generating the same movement key as that generated in the contact IC chip, and the data to be moved, which is transmitted from the reader / writer and encrypted in the first non-contact IC chip, And obtaining means for obtaining data to be moved by decrypting using the movement key generated by the generating means.

  The first aspect of the present invention generates a movement key used to encrypt data to be moved based on a key assigned to a data area in which the data to be moved is managed and issued identification information. A generation unit / step; and a transmission unit / step that encrypts data to be moved using the movement key generated by the generation unit / step and transmits the encrypted data to be moved to the reader / writer. It is characterized by.

  According to a second aspect of the present invention, when the same identification information issued to another non-contact IC chip is transmitted from the reader / writer, the storage means / step for storing the transmitted identification information and the movement The other non-contact IC chip based on the key assigned to the data area of the same use as the data area of the other non-contact IC chip in which the target data is managed and the identification information stored by the storage means / step The generation means / step for generating the same movement key as that used for encrypting the data to be moved and the movement encrypted by the other non-contact IC chip transmitted from the reader / writer It is characterized by comprising acquisition means / step for decrypting the target data using the movement key generated by the generation means / step and acquiring the movement target data.

  In the first contactless IC chip constituting the data transmission / reception system of the present invention, and in the first present invention, the key assigned to the data area in which the data to be moved is managed and the issued identification information Based on this, a movement key used to encrypt data to be moved is generated. Further, the data to be moved is encrypted using the generated movement key, and the encrypted data to be moved is transmitted to the reader / writer.

  In the second non-contact IC chip constituting the data transmission / reception system of the present invention, and in the second present invention, the same identification information as that issued to the first (other) non-contact IC chip is provided. When transmitted from the reader / writer, the transmitted identification information is stored and assigned to the data area of the same use as the data area of the first (other) non-contact IC chip in which the data to be moved is managed. The same movement key as that generated in the first (other) non-contact IC chip is generated based on the stored key and the stored identification information. Further, the data to be moved, which is transmitted from the reader / writer and encrypted in the first (other) non-contact IC chip, is decrypted using the generated movement key, and the data to be moved is To be acquired.

  According to the present invention, data stored in a predetermined area can be moved safely and easily.

  Embodiments of the present invention will be described below. The correspondence relationship between the invention described in this specification and the embodiments of the invention is exemplified as follows. This description is intended to assure that embodiments supporting the claimed invention are described in this specification. Therefore, although there is an embodiment which is described in the embodiment of the invention but is not described here as corresponding to the invention, it means that the embodiment is not It does not mean that it does not correspond to the invention. Conversely, even if an embodiment is described herein as corresponding to an invention, that means that the embodiment does not correspond to an invention other than the invention. Absent.

  Further, this description does not mean all the inventions described in this specification. In other words, this description is for the invention described in the present specification and not claimed in this application, i.e., the existence of an invention that will be filed in the future or added by amendment. There is no denial.

  The data transmission / reception system according to claim 1 includes a first non-contact IC chip (for example, non-contact IC chip 1 in FIG. 1) as a data movement source and a second non-contact IC chip (for example, as a data movement destination). And non-contact IC chip 2) of FIG.

  Of these, the first contactless IC chip encrypts the data to be moved based on the key assigned to the data area in which the data to be moved is managed and the issued identification information (for example, unique ID). First generation means for generating a movement key used for conversion (for example, the encryption processing unit 14 in FIG. 10 of the non-contact IC chip 1) and the movement key generated by the first generation means Using the transmission means (for example, the non-contact IC chip 1 of FIG. 10) that encrypts the data to be moved and transmits the encrypted data to be moved to the reader / writer (for example, the reader / writer 3 of FIG. 1). And a communication control unit 11).

  The second non-contact IC chip stores the identification information transmitted when the same identification information issued to the first non-contact IC chip is transmitted from the reader / writer. (For example, the unique ID management area 22 in FIG. 12 of the non-contact IC chip 2) and the key assigned to the data area of the same use as the data area of the first non-contact IC chip in which the data to be moved is managed And second generation means for generating the same movement key as that generated in the first non-contact IC chip based on the identification information stored by the storage means (for example, FIG. 10 of the non-contact IC chip 2). The data to be moved, which is transmitted from the reader / writer and encrypted by the first contactless IC chip, using the movement key generated by the second generation means. The data to be moved Acquisition means (for example, the memory management unit 13 in FIG. 10 of the non-contact IC chip 2).

  The non-contact IC chip according to claim 2 corresponds to the first non-contact IC chip constituting the data transmission / reception system according to claim 1, and the embodiment (however, an example) to which each means corresponds is as follows. The same as the first non-contact IC chip.

  The information processing method according to claim 3 is a data transfer source for another non-contact IC chip (for example, the non-contact IC chip 2 in FIG. 1), and the other non-contact IC chip has a built-in memory. An information processing method for a non-contact IC chip (for example, non-contact IC chip 1 in FIG. 1) having a data area of the same use as a data area in an internal memory, which is allocated to a data area in which data to be moved is managed A generation step (for example, step S25 in FIG. 14) for generating a transfer key used for encrypting the data to be transferred based on the generated key and the issued identification information, and processing of the generation step The transmission step (for example, the step of FIG. 14) encrypts the data to be moved using the movement key generated by the above-mentioned key and transmits the encrypted data to be moved to the reader / writer. S32).

  Also in the program according to the fourth aspect, the embodiment (however, an example) to which each step corresponds is the same as the information processing method according to the third aspect.

  The non-contact IC chip according to claim 6 corresponds to the second non-contact IC chip constituting the data transmission / reception system according to claim 1, and an embodiment (however, an example) to which each means corresponds is as follows. This is the same as the second non-contact IC chip.

  The information processing method according to claim 7 is a data transfer destination for another non-contact IC chip (for example, the non-contact IC chip 1 in FIG. 1), and the other non-contact IC chip has a built-in memory. An information processing method for a non-contact IC chip (for example, non-contact IC chip 2 in FIG. 1) having a data area of the same use as a data area in a built-in memory, which is issued to the other non-contact IC chip. When the same identification information is transmitted from the reader / writer, the storage step (for example, step S72 in FIG. 15) for storing the transmitted identification information and the other data for managing the movement target data are stored. Based on the key assigned to the data area of the same use as the data area of the non-contact IC chip and the identification information stored by the processing of the storage step, the other non-contact IC chip generates the key. And a generation step (for example, step S75 in FIG. 15) for generating the same movement key as that used for encrypting the data to be moved, and the other non-transmission signal transmitted from the reader / writer. An acquisition step (for example, FIG. 15) of decrypting the data of the movement target encrypted in the contact IC chip using the movement key generated by the processing of the generation step, and acquiring the data of the movement target Step S81).

  Also in the program according to the eighth aspect, the embodiment (however, an example) to which each step corresponds is the same as the information processing method according to the seventh aspect.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration example of a data transmission / reception system according to an embodiment of the present invention.

  The data transmission / reception system includes, for example, a non-contact IC chip 1 that is a data movement source, a non-contact IC chip 2 that is a data movement destination, a reader / writer 3, and a unique ID management device 4.

  The non-contact IC chips 1 and 2 are each embedded in a cellular phone or PDA (Personal Digital Assistants) or embedded in a plastic card-like one. It includes an antenna that receives electromagnetic waves, a CPU (Central Processing Unit) that is driven by power generated in response to receiving electromagnetic waves, a non-volatile memory, and the like. The non-contact IC chips 1 and 2 execute a command transmitted from the reader / writer and execute a predetermined process such as reading / writing of data stored in the memory.

  The reader / writer 3 performs short-range wireless communication via electromagnetic waves with the non-contact IC chip 1 and the non-contact IC chip 2 and transmits commands to the non-contact IC chip 1 and the non-contact IC chip 2. The processing result of the command transmitted from the non-contact IC chip 1 and the non-contact IC chip 2 is received.

  The unique ID management device 4 is connected to the reader / writer 3 by wire, for example, and appropriately issues (issues) a unique ID to the non-contact IC chip brought close to the reader / writer 3. Each non-contact IC chip can be set with a unique ID, and the unique ID management device 4 manages unique IDs set for all the non-contact IC chips and is unique without overlapping. An ID is appropriately issued, and a unique ID is set for a non-contact IC chip in an initial state where a unique ID has not yet been set. In the example of FIG. 1, it is assumed that the non-contact IC chip 2 to which data is moved is an initial non-contact IC chip.

  In the data transmission / reception system having such a configuration, the data stored in the non-contact IC chip 1 (memory of the non-contact IC chip 1) is moved from the non-contact IC chip 1 to the non-contact IC chip 2. This is performed via the reader / writer 3.

  In this movement, the export of the data to be moved by the non-contact IC chip 1 and the import of the data to be moved by the non-contact IC chip 2 (data transmitted from the non-contact IC chip 1) are continuously performed as a series of processes. However, even if there is a time difference between the export timing of data to be moved by the non-contact IC chip 1 and the import timing of data to be moved by the non-contact IC chip 2, In other words, it can be done asynchronously. That is, the user holds the non-contact IC chip 1 (a terminal or the like on which the non-contact IC chip 1 is mounted) over the reader / writer 3 to export the data, and then attaches the non-contact IC chip 2 to the reader / writer 3 at a predetermined timing. You can import data by holding over.

  Here, the flow of data movement will be described.

  FIG. 2 is a diagram showing the generation of a unique ID for the non-contact IC chip 1 from which data is moved.

  As shown in FIG. 2, first, a unique ID is issued by the unique ID management device 4 and transmitted to the non-contact IC chip 1 via the reader / writer 3. The data transmitted from the reader / writer 3 to the non-contact IC chip 1 includes a command for requesting the storage of the unique ID in addition to the unique ID issued by the unique ID management device 4. It is. In the non-contact IC chip 1 that has received the unique ID and command, the command is executed and the unique ID is stored. The unique ID issued here is information for identifying the contactless IC chip 2 to which the data is to be moved.

  FIG. 3 is a diagram illustrating key generation. The key generated here is used for encryption of data to be moved.

  As shown in FIG. 3, when a command is received from the reader / writer 3 (when a command is transmitted), a key is generated in the non-contact IC chip 1. As will be described in detail later, the same key is prepared in advance in a predetermined area of the memory for the non-contact IC chips 1 and 2, and one key (moving) based on the unique ID stored immediately before the same key. Key) is generated.

  FIG. 4 is a diagram illustrating state transition.

  When the key is generated in the non-contact IC chip 1, as shown in FIG. 4, the internal state of the non-contact IC chip 1 (the state of the system in which data to be moved, which will be described later) is managed is the data from the general state. Transition to the moving state. This internal state transition is performed in response to a request from the reader / writer 3, for example. Although the respective states will be described later, data can be moved only in the data movement state.

  FIG. 5 is a diagram showing data export.

  When the internal state of the non-contact IC chip 1 transitions to the data movement state, the data to be moved is read from the memory in response to a request from the reader / writer 3 in the non-contact IC chip 1 that is the data movement source. Then, the read data and the unique ID of the contactless IC chip 1 are encrypted with the generated key, thereby generating the memory data D as the export result.

  The memory data D is transmitted from the non-contact IC chip 1 to the reader / writer 3. For example, the non-contact IC chip 2 is placed over the reader / writer 3 so that the non-contact IC chip 2 can import data. Until it becomes, it is hold | maintained by the management apparatus connected with the reader / writer 3. FIG.

  When the export of the data to be moved is completed, for example, the user of the non-contact IC chip 1 (a user such as a terminal equipped with the non-contact IC chip 1) is notified of a password with a predetermined number of digits. The password notified to the user here is held by the management apparatus together with the memory data D.

  This password is used to specify the user of the non-contact IC chip to which the data is to be moved, and the user of the non-contact IC chip 2 (may be the same user as the user of the non-contact IC chip 1) When data is imported to the non-contact IC chip 2, the password notified when the export is completed is input to the management apparatus, and the non-contact IC chip 2 that the user has is the non-contact IC chip to which the data is moved Make sure that When it is confirmed that a password that matches the input password is held together with the memory data D, a series of processes until data import is started.

  FIG. 6 is a diagram illustrating the setting of the unique ID.

  When it is confirmed that the password that matches the password entered by the user of the contactless IC chip 2 to which the data is to be moved is stored, the reader / writer 3 applies the contactless IC to the contactless IC chip 2. A command requesting to set the same unique ID as that stored in the chip 1 is transmitted.

  For example, when the unique ID is issued by the unique ID management device 4 (FIG. 2), the issued unique ID is also notified to the management device that manages the memory data D in association with the password, Like the memory data D, it is stored in association with the password. When the password is input, the unique ID is read and provided to the non-contact IC chip 2.

  In the non-contact IC chip 2, the unique ID is stored in a predetermined area of the memory by executing the command transmitted from the reader / writer 3, and set as identification information of the non-contact IC chip 2 itself. The unique ID set in the non-contact IC chip 2 that is the data transfer destination is the same as the unique ID stored in the non-contact IC chip 1 that is the data transfer source.

  FIG. 7 is a diagram illustrating key generation. The key generated here is used to decrypt the data to be moved.

  As shown in FIG. 7, when there is a command from the reader / writer 3 (when a command is transmitted), in the non-contact IC chip 2, a key prepared in a predetermined area of the memory and the immediately preceding The same key (key that can decrypt the information encrypted by the non-contact IC chip 1) as that generated in the non-contact IC chip 1 is generated based on the unique ID set in (1). Since both the non-contact IC chips 1 and 2 use the same key prepared in advance and generate the key according to the same algorithm, the unique ID set in the non-contact IC chip 2 is the non-contact IC. As long as the unique ID stored in the chip 1 is the same, the same key is generated.

  FIG. 8 is a diagram illustrating state transition.

  When the key is generated in the non-contact IC chip 2, as shown in FIG. 8, the internal state of the non-contact IC chip 2 transitions from the general state to the data movement state. Thereby, the non-contact IC chip 2 is in a state where data can be imported.

  FIG. 9 is a diagram showing data import.

  When the memory data D exported by the non-contact IC chip 1 is transmitted via the reader / writer 3, the non-contact IC chip 2 uses the generated key to decrypt the memory data D, Data to be moved is acquired. The acquired data to be moved is stored in a predetermined area of the memory of the non-contact IC chip 2, thereby realizing data movement. When the data import is completed, the internal state of the non-contact IC chip 2 transitions to the general state.

  A series of processes of the non-contact IC chips 1 and 2 as described above will be described later with reference to a flowchart.

  FIG. 10 is a block diagram illustrating a functional configuration example of the non-contact IC chip 1. At least a part of the functional units shown in FIG. 10 is realized by executing a predetermined program by the CPU of the non-contact IC chip 1.

  The communication control unit 11 controls communication with the reader / writer 3 and outputs a command transmitted from the reader / writer 3 to each unit. For example, the communication control unit 11 sends a command requesting internal state transition to the state management unit 12, a command requesting data export to the memory management unit 13, and a command requesting key generation to the encryption processing unit 14. Output each. In addition, the communication control unit 11 transmits data supplied from the encryption processing unit 14 to the reader / writer 3. The encryption processing unit 14 is supplied with encrypted data to be moved, which is an export result, to the communication control unit 11.

  The state management unit 12 manages the internal state of the non-contact IC chip 1, for example, when a command is received from the communication control unit 11 that requests to change the internal state in the general state to the data movement state ( When the data is transmitted from the reader / writer 3, the command is executed and a flag is set in the memory management unit 13 (memory), thereby prohibiting reading and writing of data stored in the memory. Further, when a command requesting to change the internal state in the data movement state to the general state is supplied from the communication control unit 11, the state management unit 12 executes the command and changes the flag setting. This makes it possible to read and write data stored in the memory.

  11A and 11B are diagrams showing the internal state of the non-contact IC chip 1.

  FIG. 11A shows a general state, and in this state, it is possible to read and write data stored in a memory, for example, paying for goods with electronic money according to access from an external reader / writer It is said.

  FIG. 11B shows the data movement state. In this state, the non-contact IC chip 1 that is the data movement source is allowed to export only the data to be moved, and can read and write data that is enabled in the general state. It is prohibited (only data to be moved can be imported in the non-contact IC chip 2 to which the data is moved).

  Returning to the description of FIG. 10, the memory management unit 13 manages the data stored in the memory in accordance with the internal state managed by the state management unit 12.

  Here, a memory area managed by the memory management unit 13 will be described.

  FIG. 12 is a diagram illustrating an example of a region formed in the memory.

  In the example of FIG. 12, systems A to C are formed in the memory. Here, the system refers to a range (area) in which areas and service areas described later are managed as a group. For example, it is the same as a drive in Windows (registered trademark). Based on the command transmitted from the reader / writer, one or more systems are generated in the memory of the non-contact IC chip, and the areas and services are hierarchically managed by each of the systems. The area and service are the same as folders and files in Windows (registered trademark).

  Each system formed in the memory includes a definition area, and system identification information and a system key are stored in the definition area. When accessing (reading / writing) data in a lower layer of a certain system, the same system key needs to be prepared in the reader / writer on the accessing side depending on the data to be accessed.

  That is, in the example of FIG. 9, the system keys assigned to the systems A to C are stored in the systems A to C, respectively. In systems A to C, areas and services are formed as lower layers.

  Further, in the example of FIG. 12, a state management area 21 and a unique ID management area 22 are formed, and the state management area 21 includes a state of data movement of the entire system A to C (the general state described above). , A data movement state) is stored. That is, the memory management unit 13 in FIG. 10 switches the setting of the flag in the state management area 21 in accordance with the control by the state management unit 12.

  For example, when a flag indicating that data movement is permitted is set in the state management area 21, the data of the systems A to C (data managed by the systems A to C) can be collectively moved. It is said. In this case, reading and writing of data in the systems A to C is disabled.

  In the unique ID management area 22, a unique ID set as identification information of the non-contact IC chip 1 is stored, and a unique ID issued by the unique ID management device 4 is stored. The unique ID (unique ID issued by the unique ID management device 4) stored in the unique ID management area 22 is a key used for encrypting the data to be moved together with the key set in each system. Used when generating

  FIG. 13 is a diagram showing a directory structure of areas and services formed in one system such as the system A of FIG.

  A part of the storage area of the memory is a data storage for storing data for providing various services (general services such as an electronic money service, which are different from services formed in the memory) It is used as an area. This data storage area has a hierarchical structure with an area definition area corresponding to a so-called directory as a hierarchy, and the area definition area manages an area definition area corresponding to a directory in a lower hierarchy and a service area described later. A service definition area can be provided.

  The area definition area is a part of the data storage area of the memory, and is assigned to an administrator (which may be the service provider itself) that manages the service provider that provides the service. The area definition area is accessed as an area code as an identification code that can be used as a name for identifying the area definition area, a free capacity indicating the number of available free blocks, a service area in the lower hierarchy of the area definition area, etc. An area key or the like is arranged as a key necessary for the operation.

  In the example of FIG. 13, the area definition area (area code 0000h) of the highest hierarchy is assigned to the manager A, and the area definition areas of the managers B1 and B2 are created using this as the parent hierarchy. Furthermore, the area definition area of the manager C is created with the area definition area of the manager B1 as the parent hierarchy.

  The service definition area is a part of the data storage area of the memory for managing the service area, and is assigned to the service provided by the service provider. In the service definition area, a service code as an identification code that can be used as a name for identifying the service definition area, the number of blocks indicating the capacity of the service area for storing data necessary for providing the service, and access to the service area A service key or the like as a key necessary to do this is arranged.

  The service area is a part of the data storage area and includes zero or more blocks in which data necessary for providing the service is stored. The number of blocks constituting the service area is arranged as the capacity of the service definition area that manages the service area.

  A service provider creates a service definition area in a lower hierarchy of an area definition area managed by a certain administrator, and provides various services using the service area managed in the service definition area. For example, when providing an electronic money service, the service area includes the amount (balance) of electronic money, information on products purchased with electronic money (for example, product names and prices), date of purchase, etc. Remembered.

  The non-contact IC chips 1 and 2 have the same system configuration (area configuration for the same application) in the memory before starting data movement. Therefore, if the system configuration of FIG. 12 is formed in the memory of the non-contact IC chip 1, the systems A to C are also formed in the memory of the non-contact IC chip 2. That is, the non-contact IC chips 1 and 2 have the system keys of the systems A to C in advance.

  In addition, since the area key assigned to the area having the area code represented by 0000h in the system is the same information, the non-contact IC chips 1 and 2 have the system keys of the systems A to C, respectively. In addition, an area key for each area code 0000h of the systems A to C is also provided in advance.

  The keys used when encrypting the data to be moved are the system keys of all systems, the area key of the area represented by the area code 0000h in each system, and the unique ID management device 4 The number is generated and generated based on the unique ID stored in the unique ID management area 22. Both the non-contact IC chips 1 and 2 generate the same key based on the same key and the same unique ID, so that the data encrypted by the non-contact IC chip 1 using the key is non-contact IC chip. 2 can be decrypted.

  Returning to the description of FIG. 10, the encryption processing unit 14 performs key generation and data encryption processing. For example, when the encryption processing unit 14 is instructed to generate a key, the system key assigned to each system, the area key of the area with the area code 0000h, and the unique ID are transmitted via the memory management unit 13. A key is generated based on the read data from the memory. In addition, when data export is instructed, the encryption processing unit 14 encrypts the data to be moved read from the memory and its own unique ID using the generated key, and the memory data D as the export result is encrypted. Output to the communication control unit 11.

  Each functional unit as described above is also realized in the non-contact IC chip 2. Each part realized in the non-contact IC chip 2 is basically the same as each part of the non-contact IC chip 1 described above.

  Next, processing of each component in FIG. 1 will be described.

  First, a series of processes from setting a unique ID to exporting data to be moved will be described with reference to the flowchart of FIG. This process corresponds to the process described with reference to FIGS.

  In step S <b> 41, the unique ID management device 4 issues a unique ID that does not overlap with the unique ID of another non-contact IC chip, and transmits it to the reader / writer 3.

  In step S1, the reader / writer 3 receives the unique ID transmitted from the unique ID management device 4, proceeds to step S2, and transmits it to the non-contact IC chip 1 together with a command requesting to store the unique ID.

  In step S <b> 21, the communication control unit 11 of the non-contact IC chip 1 receives the unique ID and command transmitted from the reader / writer 3 and outputs those data to the memory management unit 13.

  In step S22, the memory management unit 13 executes the command supplied from the communication control unit 11, and stores the unique ID in the unique ID management area 22 of the memory.

  When the unique ID is stored, in step S23, the memory management unit 13 causes the communication control unit 11 to transmit information indicating that the storage of the unique ID is completed to the reader / writer 3.

  In step S3, the reader / writer 3 receives information transmitted from the non-contact IC chip 1 (information indicating that the storage of the unique ID has been completed), proceeds to step S4, and sends a command for requesting key generation. Transmit to contact IC chip 1.

  In step S <b> 24, the communication control unit 11 of the non-contact IC chip 1 receives the command transmitted from the reader / writer 3 and outputs the received command to the encryption processing unit 14.

  In step S25, the cryptographic processing unit 14 includes a system key assigned to all systems formed in the memory, and an area key assigned to an area represented by an area code 0000h in each system, And one key is produced | generated based on the unique ID memorize | stored in the unique ID management area | region 22 by step S22.

  When the key is generated, in step S26, the cryptographic processing unit 14 causes the communication control unit 11 to transmit information indicating that the generation of the key is completed to the reader / writer 3.

  In step S5, the reader / writer 3 receives the information transmitted from the non-contact IC chip 1 (information indicating that the key generation has been completed), proceeds to step S6, and sets the internal state (system state) to the general state. A command for requesting transition to the data movement state is transmitted to the non-contact IC chip 1.

  In step S27, the communication control unit 11 of the non-contact IC chip 1 receives the command transmitted from the reader / writer 3, and outputs the received command to the state management unit 12.

  In step S28, the state management unit 12 executes the command supplied from the communication control unit 11, and sets a flag indicating that the internal state is in the data movement state in the state management area 21 of the memory. The state is changed from the general state to the data movement state.

  In step S <b> 29, the state management unit 12 transmits information indicating that the internal state has been changed from the communication control unit 11 to the reader / writer 3.

  In step S7, the reader / writer 3 receives information from the non-contact IC chip 1 (information indicating that the internal state has been changed), proceeds to step S8, and sends a command for requesting export of data to be moved. Transmit to contact IC chip 1.

  In step S <b> 30, the communication control unit 11 of the non-contact IC chip 1 receives a command transmitted from the reader / writer 3 and outputs the received command to the encryption processing unit 14.

  In step S31, the encryption processing unit 14 executes the command supplied from the communication control unit 11, and assigns the unique ID stored in the unique ID management area 22 together with the data to be moved to the memory management unit. The data read from the memory via 13 is encrypted using the key generated in step S25. Memory data D obtained by being encrypted by the encryption processing unit 14 is supplied to the communication control unit 11.

  In step S <b> 32, the communication control unit 11 transmits the memory data D supplied from the encryption processing unit 14 to the reader / writer 3. The data transmitted from the non-contact IC chip 1 is received by the reader / writer 3 in step S9 and managed by a management device connected to the reader / writer 3.

  Next, a series of processing from setting a unique ID to importing data to be moved will be described with reference to the flowchart of FIG. This process is a process corresponding to the process described with reference to FIGS. 6 to 9. For example, the user inputs a password while holding the non-contact IC chip 2 over the reader / writer 3, and the input password It is started when it is confirmed that the memory data D or the like is held in the management device in association with the.

  In step S51, the reader / writer 3 contacts the password with the same unique ID stored in the non-contact IC chip 1 as well as a command requesting to set the unique ID. Send to IC chip 2.

  In step S <b> 71, the communication control unit 11 of the non-contact IC chip 2 receives the unique ID and command transmitted from the reader / writer 3 and outputs those data to the memory management unit 13.

  In step S72, the memory management unit 13 executes the command supplied from the communication control unit 11, stores the unique ID in the unique ID management area 22 of the memory, and sets it as its own identification information.

  In step S73, the memory management unit 13 causes the communication control unit 11 to transmit information indicating that the setting of the unique ID has been completed to the reader / writer 3.

  In step S52, the reader / writer 3 receives the information transmitted from the non-contact IC chip 2 (information indicating that the setting of the unique ID has been completed), and proceeds to step S53 to execute a command for requesting key generation. It transmits to the contact IC chip 2.

  In step S 74, the communication control unit 11 of the non-contact IC chip 2 receives the command transmitted from the reader / writer 3 and outputs the received command to the encryption processing unit 14.

  In step S75, the cryptographic processing unit 14 includes a system key assigned to all the systems formed in the memory, an area key assigned to an area represented by an area code 0000h in each system, One key is generated based on the unique ID set in step S72.

  When the key is generated, in step S76, the cryptographic processing unit 14 causes the communication control unit 11 to transmit information indicating that the generation of the key is completed to the reader / writer 3.

  In step S54, the reader / writer 3 receives the information transmitted from the non-contact IC chip 2 (information indicating that the key generation has been completed), proceeds to step S55, and sets the internal state (system state) to the general state. A command for requesting transition to the data movement state is transmitted to the non-contact IC chip 2.

  In step S77, the communication control unit 11 of the non-contact IC chip 2 receives the command transmitted from the reader / writer 3 and outputs the received command to the state management unit 12.

  In step S78, the state management unit 12 executes the command supplied from the communication control unit 11, and sets a flag indicating that the internal state is in the data movement state in the state management area 21 of the memory. The state is changed from the general state to the data movement state.

  In step S <b> 79, the state management unit 12 transmits information indicating that the internal state has been changed from the communication control unit 11 to the reader / writer 3.

  In step S56, the reader / writer 3 receives information from the non-contact IC chip 2 (information indicating that the internal state has been changed), proceeds to step S57, and imports data together with the held memory data D. Is sent to the non-contact IC chip 2.

  In step S80, the communication control unit 11 of the non-contact IC chip 2 receives the memory data D and the command transmitted from the reader / writer 3 and outputs them to the encryption processing unit 14.

  In step S81, the encryption processing unit 14 decrypts the memory data D transmitted from the reader / writer 3 using the key generated in step S75, and acquires data to be moved. The encryption processing unit 14 stores the data to be moved obtained by decryption in the memory.

  In the non-contact IC chip 2, the area (system) that is the storage destination of the data to be moved obtained by decoding is the same system as the data source system formed in the non-contact IC chip 1. It becomes. As a result, for example, data stored in the systems A to C of the non-contact IC chip 1 are collectively moved to the systems A to C of the non-contact IC chip 2 as they are.

  In step S82, the encryption processing unit 14 transmits information indicating that the import has been completed from the communication control unit 11 to the reader / writer 3, and ends the processing. The information transmitted here is received by the reader / writer 3 in step S58.

  In the above, as shown in FIG. 16A (FIG. 12), in order to move the entire data of the systems A to C, which are all systems formed in the memory, in a batch, One state management area 21 for managing a flag indicating the state of movement is prepared, and one unique ID management area 22 for managing a unique ID is prepared. It may be prepared so that data can be moved in units of systems.

  FIG. 16B is a diagram illustrating an example of an area formed in the memory when data is moved in units of systems.

  In the example of FIG. 16B, the system A is provided with a state management area 21A for managing a flag indicating the data movement state of the system A, and a unique ID management area 22A for managing a unique ID. Has been. Similarly, the systems B and C are provided with status management areas 21B and 21C in which flags indicating the data movement status are managed, and unique ID management areas 22B and 22C.

  For example, when only the data stored in the system A is moved, a flag indicating that the internal state is the data moving state is set only in the state management area 21A, and the state management area 21B of the system B and the system C A flag indicating that the internal state is the general state is set in the state management area 21C. At this time, data can be read from and written to the systems B and C.

  FIGS. 17A and 17B show an example of selection of a key used as a source for generating a key used for encryption of data to be moved in the non-contact IC chip 1 and decryption of data to be moved in the non-contact IC chip 2. FIG.

As described above, when the data of the systems A to C are moved together, the system keys K _SA , K _SB , K _SC of the systems A to C and the systems A to C as shown by the solid lines in FIG. Whereas the key is generated based on the area keys K _AA , K _AB , K _AC of the area represented by 0000h in C and the unique ID stored in the unique ID management area 22 When only the system B data is moved in units of system, for example, as shown by the solid line in FIG. 17B, the system key K _SB of the system B, the area key K _{AB of the} area in the system B, and A key is generated based on the unique ID stored in the unique ID management area 22B.

  The series of processes described above can be executed by hardware, but can also be executed by software. In this case, the apparatus for executing the software is constituted by, for example, a personal computer as shown in FIG.

  In FIG. 18, a CPU (Central Processing Unit) 101 performs various processes according to a program stored in a ROM (Read Only Memory) 102 or a program loaded from a storage unit 108 to a RAM (Random Access Memory) 103. Execute. The RAM 103 also stores data necessary for the CPU 101 to execute various processes as appropriate.

  The CPU 101, ROM 102, and RAM 103 are connected to each other via a bus 104. An input / output interface 105 is also connected to the bus 104.

  The input / output interface 105 includes an input unit 106 including a keyboard and a mouse, a display including an LCD (Liquid Crystal Display), an output unit 107 including a speaker, a storage unit 108 including a hard disk, and a network. A communication unit 109 that performs all communication processes is connected.

  A drive 110 is also connected to the input / output interface 105 as necessary. A removable medium 111 including a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is appropriately installed in the drive 110, and a computer program read therefrom is installed in the storage unit 108 as necessary.

  When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a network or a recording medium into a general-purpose personal computer or the like.

  As shown in FIG. 18, the recording medium is distributed to provide a program to the user separately from the apparatus main body, and includes a magnetic disk (including a flexible disk) on which the program is recorded, an optical disk (CD- ROM (Compact Disk-Read Only Memory), DVD (including Digital Versatile Disk)), magneto-optical disk (including MD (registered trademark) (Mini-Disk)), or removable media 111 made of semiconductor memory, etc. In addition, it is configured by a ROM 102 on which a program is recorded and a hard disk included in the storage unit 108 provided to the user in a state of being incorporated in the apparatus main body in advance.

  In the present specification, each step includes not only processing performed in time series according to the described order but also processing executed in parallel or individually, although not necessarily performed in time series.

  Further, in this specification, the system represents the entire apparatus composed of a plurality of apparatuses.

It is a figure which shows the structural example of the data transmission / reception system which concerns on one Embodiment of this invention. It is a figure shown about numbering of a unique ID. It is a figure shown about the production | generation of a key. It is a figure shown about a state transition. It is a figure shown about export of data. It is a figure shown about the setting of unique ID. It is a figure shown about the production | generation of a key. It is a figure shown about a state transition. It is a figure shown about data import. It is a block diagram which shows the function structural example of a non-contact IC chip. It is a figure shown about the internal state of a non-contact IC chip. It is a figure which shows the example of the area | region formed in memory. It is a figure which shows the directory structure of an area and a service. 10 is a flowchart illustrating a series of processing from storage of a unique ID to export of data to be moved. It is a flowchart explaining a series of processes from setting a unique ID to importing data to be moved. It is a figure which shows the example of the area | region formed in memory. It is a figure which shows the example of selection of a key. And FIG. 16 is a block diagram illustrating a configuration example of a personal computer.

Explanation of symbols

  1, 2 Contactless IC chip, 3 Reader / writer, 4 Unique ID management device, 11 Communication control unit, 12 State management unit, 13 Memory management unit, 14 Cryptographic processing unit, 21 State management region, 22 Unique ID management region

Claims (9)

It consists of a first non-contact IC chip that is a data movement source and a second non-contact IC chip that is a data movement destination, and each of the first and second non-contact IC chips has the same usage data in a built-in memory. In a data transmission / reception system having an area,
The first non-contact IC chip is:
First generation means for generating a movement key used to encrypt the data to be moved based on a key assigned to a data area in which the data to be moved is managed and issued identification information; ,
Transmission means for encrypting the data to be moved using the movement key generated by the first generation means, and transmitting the encrypted data to be moved to a reader / writer,
The second non-contact IC chip is:
Storage means for storing the transmitted identification information when the same identification information issued to the first non-contact IC chip is transmitted from the reader / writer;
Based on the key assigned to the data area of the same use as the data area of the first contactless IC chip in which the data to be moved is managed, and the identification information stored by the storage means, Second generation means for generating the same movement key as that generated in the first non-contact IC chip;
The movement target data encrypted by the first non-contact IC chip transmitted from the reader / writer is decrypted using the movement key generated by the second generation means, and moved. A data transmission / reception system comprising: acquisition means for acquiring the target data. In the non-contact IC chip having the data area of the same use as the data area of the other non-contact IC chip and the data area of the internal memory of the other non-contact IC chip,
Generating means for generating a movement key used to encrypt the data to be moved based on a key assigned to a data area in which the data to be moved is managed and issued identification information;
A non-contact method comprising: a transmission unit configured to encrypt the data to be moved using the movement key generated by the generation unit and to transmit the encrypted data to be moved to a reader / writer. IC chip. In an information processing method for a non-contact IC chip that has a data area in the built-in memory that serves as a data source for the other non-contact IC chip and has the same data area as the data area that the other non-contact IC chip has in the built-in memory ,
A generation step of generating a movement key used to encrypt the data to be moved based on a key assigned to a data area in which the data to be moved is managed and issued identification information;
A step of encrypting the data to be moved using the movement key generated by the process of the generating step, and transmitting the encrypted data to be moved to a reader / writer. Information processing method. Information processing of the non-contact IC chip that has a data area in the built-in memory that is the same as the data area that the other non-contact IC chip has in the built-in memory. In the program to be executed
A generation step of generating a movement key used to encrypt the data to be moved based on a key assigned to a data area in which the data to be moved is managed and issued identification information;
A step of encrypting the data to be moved using the movement key generated by the process of the generating step, and transmitting the encrypted data to be moved to a reader / writer. program. A non-contact IC chip having a data area in the built-in memory that is the data source for the other non-contact IC chip, the same data area as the other non-contact IC chip has in the built-in memory,
Generating means for generating a movement key used to encrypt the data to be moved based on a key assigned to a data area in which the data to be moved is managed and issued identification information;
A non-contact IC chip comprising: transmission means for encrypting the data to be moved using the movement key generated by the generation means and transmitting the encrypted data to be moved to a reader / writer A portable terminal characterized by that. In the non-contact IC chip having the data area of the same use as the data area of the other non-contact IC chip and the data area of the other non-contact IC chip,
When the same identification information as that issued to the other non-contact IC chip is transmitted from the reader / writer, storage means for storing the transmitted identification information;
Based on the key assigned to the data area of the same use as the data area of the other contactless IC chip in which the data to be moved is managed, and the identification information stored by the storage means, Generating means for generating the same movement key as that generated in the contact IC chip and used to encrypt the data to be moved;
The data to be moved, which is transmitted from the reader / writer and encrypted in the other non-contact IC chip, is decrypted using the movement key generated by the generation unit, and the data to be moved A non-contact IC chip comprising: an acquisition means for acquiring In an information processing method for a non-contact IC chip that has a data area in the built-in memory that is the data destination for the other non-contact IC chip and has the same data area as the data area that the other non-contact IC chip has in the built-in memory ,
When the same identification information issued to the other non-contact IC chip is transmitted from the reader / writer, the storing step for storing the transmitted identification information;
Based on the key assigned to the data area of the same use as the data area of the other contactless IC chip in which the data to be moved is managed, and the identification information stored by the processing of the storage step, the other A generation step of generating the same movement key as that generated in the contactless IC chip and used for encrypting the data to be moved;
The data to be moved, which is transmitted from the reader / writer and encrypted in the other non-contact IC chip, is decrypted using the movement key generated by the process of the generation step, An information processing method comprising: an acquisition step of acquiring the data. The non-contact IC chip has a data area in the built-in memory that serves as the data transfer destination for the other non-contact IC chip and has the same data area as the built-in memory in the other non-contact IC chip. In the program to be executed
When the same identification information issued to the other non-contact IC chip is transmitted from the reader / writer, the storing step for storing the transmitted identification information;
Based on the key assigned to the data area of the same use as the data area of the other contactless IC chip in which the data to be moved is managed, and the identification information stored by the processing of the storage step, the other A generation step of generating the same movement key as that generated in the contactless IC chip and used for encrypting the data to be moved;
The data to be moved, which is transmitted from the reader / writer and encrypted in the other non-contact IC chip, is decrypted using the movement key generated by the process of the generation step, An acquisition step for acquiring the data. It is a non-contact IC chip having a data area in the built-in memory that is the data destination for the other non-contact IC chip, the data area of the other non-contact IC chip having the built-in memory,
When the same identification information as that issued to the other non-contact IC chip is transmitted from the reader / writer, storage means for storing the transmitted identification information;
Based on the key assigned to the data area of the same use as the data area of the other contactless IC chip in which the data to be moved is managed, and the identification information stored by the storage means, Generating means for generating the same movement key as that generated in the contact IC chip and used to encrypt the data to be moved;
The data to be moved, which is transmitted from the reader / writer and encrypted in the other non-contact IC chip, is decrypted using the movement key generated by the generation unit, and the data to be moved A portable terminal comprising a non-contact IC chip provided with an acquisition means for acquiring.

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