JP6373003B2 - Human body communication system and human body communication card holder - Google Patents

Description

  The present invention relates to a human body communication system and a human body communication card holder, and more particularly to a human body communication system and a human body communication card holder that are used for entrance / exit management and the like, and a user can enter / exit only by carrying a non-contact IC card.

  Conventionally, a human body communication unit having a function of human body communication (electric field communication) and a function of non-contact IC card communication (communication by an electromagnetic induction method or a radio wave method) is known (for example, Patent Document 1). As shown in FIG. 2 of Patent Document 1, the human body communication unit includes an IC card reader / writer, a human body communication transmitter, a control device, and a power source. In a human body communication unit, an IC card reader performs communication (non-contact IC card communication) based on a carrier (electromagnetic induction type magnetic flux, etc.) with a nearby non-contact IC card, and a human body communication transmitter exists nearby. Performs human body communication with an external human body communication receiver. The human body communication transmitter of the human body communication unit carried by the user has a function as a “mobile device” for human body communication, while the human body communication receiver installed outside is used as a “fixer” for human body communication. It has a function. Moreover, according to FIG. 4 of patent document 1, embodiment of the human body communication unit which has the structure of a card holder is shown. The card holder shown in FIG. 4 has a structure that can accommodate a non-contact IC card, and further incorporates the above-described basic configuration of the human body communication unit in a board structure. A card holder containing a human body communication unit (referred to as “human body communication card holder”) is carried by a user. Human body communication between the human body communication transmitter and the human body communication receiver is performed through the human body.

  According to the above human body communication card holder, the human body communication transmitter as the mobile unit and the human body communication receiver as the stationary unit perform human body communication via the human body, and in addition, between the accommodated non-contact IC card It is possible to perform non-contact IC card communication. In particular, finally, necessary data can be transmitted and received through wireless communication with a non-contact IC card and human body communication between a mobile unit and a fixed unit, and the user can contact the non-contact IC card. It is possible to enter and exit just by carrying the phone.

JP 2012-53520 A (FIG. 2, FIG. 4 etc.)

  In recent years, in a human body communication card holder having a function of human body communication and a function of non-contact IC card communication, a non-container accommodated in a human body communication card holder is received from a fixing device via human body communication and non-contact IC card communication. It is desired to read and write data in the storage area of the contact IC card. As shown in FIG. 7, a reading sequence has already been realized for reading data (card ID) in the open area of the storage area of the non-contact IC card. That is, the fixing device 102 that has received the command S 101 from the external control device 101 performs human body communication 105 with the mobile device 103, and gives the command S 101 to the mobile device 103. The mobile device 103 performs communication by electromagnetic induction with the non-contact IC card 104. In this electromagnetic induction communication, the carrier 106 is output from the mobile device 103 to the non-contact IC card 104 during the communication period. Strictly speaking, the carrier 106 is fired from the IC card reader to the non-contact IC card 104 in the mobile device 103. The mobile device 103 gives the command S101 given from the fixed device 102 to the non-contact IC card 104 and reads the ID 107. The mobile device 103 sends the read ID 107 to the fixing device 102 via the human body communication 105, and the fixing device 102 sends a response S 102 to the control device 101, and sends the received ID 107 to the control device 101.

  However, data in the protection area (secret area) of the storage area of the non-contact IC card 104 cannot be read directly from the fixing device 102. The reason is as follows.

  In order to access the protected area of the non-contact IC card 104, it is necessary to perform authentication with the non-contact IC card 104. This authentication process is performed between the fixing device 102 and the non-contact IC card 104. Then, during the authentication process and the subsequent read / write process, the IC card reader / writer must always emit a carrier to the non-contact IC card 104 and continue to supply power to the non-contact IC card 104. . While the carrier is appearing, this becomes noise, causing interference between the human body communication 105 and the non-contact IC card communication between the fixed device 102 and the mobile device 103, and as a result, human body communication is not established. This operation state is shown in FIG. In FIG. 8, the same elements as those described in FIG. 7 are denoted by the same reference numerals. In FIG. 8, when performing authentication 1 and authentication 2 between the fixing device 102 and the non-contact IC card 104, and performing human body communication 105 related to authentication 1 and authentication 2 between the fixing device 102 and the mobile device 103. At the same time, since processing related to authentication 1 and authentication 2 needs to be performed between the mobile device 103 and the non-contact IC card 104, the carrier 108 is continuously fired.

  Regarding the processing of authentication 1 and authentication 2, the reason why the carrier 108 has to be emitted between authentication 1 and authentication 2 is as follows. Since the non-contact IC card 104 such as FeliCa (registered trademark) does not have a built-in power supply, power must be obtained from the carrier 108 supplied from the outside. Between the processing mode of authentication 1 and the processing mode of authentication 2, first, the processing mode of authentication 1 (mode 1) is executed, and then the processing mode of authentication 2 (mode 2) is changed to the processing of authentication 2 Mode (mode 2) is executed. Thereafter, the processing mode of authentication 2 (mode 2) is changed to the processing mode of authentication 1 (mode 1). The above processing flow needs to be performed continuously without interruption. Here, when the supply of the carrier 108 is interrupted, the non-contact IC card 104 shifts to mode 0 because it does not incorporate a power source. For this reason, in order to perform the authentication 1 and the authentication 2, the carrier 108 must be continuously emitted during that time.

  As described above, when the mobile device 103 receives authentication 1 communication from the fixed device 102 as an actual communication flow, the mobile device 103 starts emission of the carrier 108 in order to execute the authentication 1. The emission of the carrier 108 is set so as to be performed at a time assumed until the end of the authentication 2 and is continued as illustrated. Therefore, even if the mobile device 103 acquires information related to the authentication 1 from the non-contact IC card 104 by communication between the mobile device 103 and the non-contact IC card 104, the information is transferred from the mobile device 103 to the fixed device 102. Can not be sent by. This is because the carrier 108 interferes with the human body communication 105. Accordingly, this communication cannot be performed, as indicated by the “x” mark in the figure. As a result, the subsequent authentication 2 communication does not actually occur as indicated by the crosses. Thus, while the carrier 108 is out, this becomes noise, and interference between the human body communication 105 and the carrier 108 (non-contact IC card communication) between the fixed device 102 and the mobile device 103 occurs, and the human body communication 105 is not established. .

  As described above, human body communication cannot be performed due to interference while the carrier for non-contact IC card communication is out. Therefore, according to the configuration of the currently proposed human body communication card holder (mobile device), Authentication cannot be performed between contactless IC cards. Therefore, the data in the protection area of the non-contact IC card cannot be directly read from the fixing device.

  In view of the above problems, an object of the present invention is to use a human body communication card holder having a function of human body communication (electric field communication) and a function of non-contact IC card communication (communication using an electromagnetic induction method (13.56 MHz, etc.)). In such a configuration, it is possible to avoid a human body communication disabled state (interference state) caused by carrier emission when receiving authentication of a non-contact IC card for the purpose of accessing a protection area of the non-contact IC card. An object of the present invention is to provide a human body communication system and a human body communication card holder that can read and write data in a protected area from a fixed device via human body communication.

  In order to achieve the above object, a human body communication system and a human body communication card holder according to the present invention are configured as follows.

A first human body communication system (corresponding to claim 1) is a human body communication system including a control device, a human body communication fixing device, a human body communication mobile device, and a non-contact IC card. Means for executing the authentication process using the authentication command encryption key included in the authentication command when the human body communication mobile device receives an authentication command (read / write command, etc.) for the non-contact IC card from the control device via the communication fixing device (Protected area access unit 26).

In the above human body communication system, based on the authentication command encryption key included in the authentication command given from the human body communication fixing device, the human body communication mobile device is placed between the human body communication mobile device and the non-contact IC card by the protection area access unit. Since the authentication process is executed independently, there is no need to execute the authentication process between the human body communication fixing device and the non-contact IC card, so that the conventional problem is solved, and as a result, the human body communication fixing device is contactless. The protected area of the IC card can be accessed, and data in the protected area of the non-contact IC card can be read and written from the human body communication fixing device via the human body communication.

  In the above configuration, the second human body communication system (corresponding to claim 2) is preferably configured such that, while the authentication process is executed in the human body communication mobile device, the carrier communication device is connected to the contactless IC card from the human body communication mobile device. It is characterized by continued firing.

In the third human body communication system (corresponding to claim 3), preferably, the human body communication mobile device receives an authentication command when reading the protection area of the non-contact IC card, and the reading ends. After that, the authentication command encryption key is deleted, and the read result is transmitted to the human body communication fixing device.

  A fourth human body communication system (corresponding to claim 4) is characterized in that, in the above configuration, the human body communication mobile device is a human body communication card holder having a structure for accommodating a non-contact IC card. To do.

The first human body communication card holder (corresponding to claim 5) includes a human body communication unit, a non-contact IC card communication unit, a control unit, and a non-contact IC card housing unit, and passes through the human body communication unit on the human body communication fixing device side. When receiving an authentication command for reading the protection area of the non-contact IC card accommodated in the non-contact IC card accommodation unit, the control unit authenticates the protection area using the authentication command encryption key included in the authentication command. It is characterized by executing a reading process. According to this human body communication card holder, the human body communication fixing device has a configuration capable of performing human body communication and non-contact IC card communication, and the human body communication fixing device attempts to read the protection area of the non-contact IC card accommodated in the non-contact IC card housing portion. When the control unit provided inside is configured to authenticate and read the protection area using the authentication command encryption key included in the authentication command , avoid interference between human body communication and non-contact IC card communication, It is possible to reliably read the protection area of the non-contact IC card.

  In the above configuration, the second human body communication card holder (corresponding to claim 6) is preferably configured such that when authenticating the protection area of the non-contact IC card, the control unit is connected with the human body communication unit on the human body communication fixing device side. A given authentication command encryption key is received, and authentication processing is performed using the authentication command encryption key while firing a carrier via a non-contact IC card communication unit.

  The third human body communication system (corresponding to claim 7), in the above configuration, preferably, when the process for the protection area of the non-contact IC card is completed, the control unit stops and receives the carrier. The authentication command encryption key is erased, and the read result is sent to the human body communication unit on the human body communication fixing device side.

The present invention has the following effects.
The human body communication system according to the present invention is a human body communication system including a control device, a human body communication fixing device, a human body communication mobile device, and a non-contact IC card, and the human body communication mobile device is a human body communication fixing device. When the authentication command for the non-contact IC card is received from the control device via the communication device, the human body communication mobile unit performs the authentication process by itself using the authentication command encryption key included in the authentication command. The inability to cause human body communication is eliminated, and data in the protected area of the contactless IC card can be read and written from the human body communication fixing device via human body communication.
The human body communication card holder according to the present invention has a configuration capable of performing human body communication and non-contact IC card communication, and the human body communication fixing device is a protection area of the non-contact IC card accommodated in the non-contact IC card housing portion. When the control unit provided inside is configured to authenticate and read the protection area using the authentication command encryption key included in the authentication command, the human body communication disabled state caused by carrier emission The protection area of the non-contact IC card can be read reliably.

It is a block diagram which shows the structure of the human body communication system which concerns on this invention. It is a block diagram which shows the internal structure of a human body communication mobile device (human body communication card holder). It is a perspective view which shows the external appearance of the human body communication mobile device as a card holder. It is a sequence diagram which shows the authentication process which performs only the authentication of the protection area of a non-contact IC card. It is a sequence diagram which shows the process which performs access (ID acquisition, authentication, reading) with respect to the protection area of a non-contact IC card. It is a sequence diagram which shows the process of the other example (encryption key exchange, ID acquisition, authentication, reading) which accesses the protection area of a non-contact IC card. It is a sequence diagram which shows the process which accesses the public area | region of the conventional non-contact IC card. It is a sequence diagram for demonstrating the problem of the access to the protection area of a non-contact IC card.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments (examples) of the present invention will be described below with reference to the accompanying drawings.

  An embodiment of a human body communication system according to the present invention will be described with reference to FIG. The human body communication system 10 includes a human body communication mobile device 11 on the mobile device side, a human body communication fixing device 12 on the fixed device side, and a control device 13. Since the human body communication mobile unit 11 is a mobile unit for human body communication and has a form of a card holder as will be described later, the card holder is mainly used in the block of the human body communication mobile unit 11 in FIG. Is also written in parentheses as “human body communication card holder”. In the description of this embodiment, the “human body communication mobile device” and the “human body communication card holder” are the same. As will be described later, the card-holder-type human body communication mobile unit 11 has a non-contact IC card housing portion, and the non-contact IC card is housed in the non-contact IC card housing portion in a normal use state. Therefore, the non-contact IC card 14 is shown by a broken line in the human body communication mobile device 11 of FIG. In the human body communication mobile device 11, non-contact IC card communication (electromagnetic induction communication (13.56 MHz, etc.) or radio wave communication) with the non-contact IC card 14 accommodated in the non-contact IC card accommodating portion. The function part which performs is provided. In addition, the control device 13 has a function as a system management device that manages communication contents and processing of the human body communication system 10. Therefore, in FIG. 1, “system management device” is described in parentheses in the block of the control device 13. The human body communication fixing device 12 and the control device 13 are connected, and the human body communication fixing device 12 appropriately receives various commands from the control device 13 or sends the acquired information to the control device 13 as appropriate. Furthermore, the human body communication 15 is configured to be performed between the human body communication mobile device 11 and the human body communication fixing device 12 based on the electric field.

  A detailed configuration of each element of the human body communication system 10 will be described with reference to FIG.

  The human body communication fixing device 12 that sends and receives commands or information to and from the control device (system management device) 13 includes a human body communication unit 21 therein. The human body communication unit 21 is a functional element that performs human body communication 15 with the human body communication mobile device (human body communication card holder) 11.

  In the detailed description of the human body communication mobile device 11, the focus is on the description of the form and internal structure of the card holder.

  The human body communication mobile device 11 includes a human body communication unit 22, a control unit 23, a non-contact IC card communication unit 24, and a non-contact IC card storage unit 25. The human body communication unit 22 is a functional element that performs human body communication 15 with the human body communication fixing device 12. The control unit 23 is a control unit that controls various processing operations in the human body communication mobile device 11. The control unit 23 has a memory, and a program for executing various processing operations is stored in the memory. Further, as an example of the processing operation, it has a function of accessing the protection area of the non-contact IC card 14 through communication with the non-contact IC card 14 accommodated in the non-contact IC card accommodation unit 25. A protected area access unit 26 is provided. The non-contact IC card communication unit 24 is means for supplying power to the non-contact IC card 14 and performing communication (non-contact IC card communication) with the non-contact IC card 14. The non-contact IC card communication unit 24 is an IC card reader / writer. Although not shown, the human body communication mobile device 11 has a built-in battery. Electric power necessary for the operation is supplied from the battery to each of the human body communication unit 22, the control unit 23, and the non-contact IC card communication unit 24. The non-contact IC card housing portion 25 is provided with a slit-shaped insertion port (not shown in FIG. 2), and the non-contact IC card 14 is inserted through the insertion port, and the inside of the non-contact IC card housing portion 25 is provided. Is housed in.

  The external appearance of the human body communication mobile device 11 having the form of a card holder is shown in FIG. The human body communication mobile device 11 has a housing 31 provided with a slit-shaped insertion port 31a. The housing 31 has a form of a card holder. The non-contact IC card 14 is being inserted into the insertion port 31a of the housing 31. Finally, the non-contact IC card 14 is inserted into the insertion port 31 a and is accommodated in the non-contact IC card accommodation unit 25 of the housing 31. Thus, the human body communication mobile device 11 functions as a human body communication card holder. The human body communication mobile unit 11 is provided as a human body communication card holder in a pocket of a user's clothes.

In the human body communication system 10 having the following configuration, the contents (sequence) of access from the human body communication fixing device 12 to the protection area (secret area) of the non-contact IC card 14 will be described.
According to the configuration of the human body communication system 10 of the present embodiment, access to the protection area of the non-contact IC card 14 is not performed directly from the human body communication fixing device 12 to the non-contact IC card 14. This is indirectly performed by the function of the protection area access unit 26 of the control unit 23 of the human body communication mobile device 11. In practice, access to the protection area of the non-contact IC card 14 is performed by the human body communication mobile device 11.

  With reference to FIG. 4, a sequence of only authentication in the protection area of the non-contact IC card 14 will be described. When receiving the access command 41 from the control device 13, the human body communication fixing device 12 sends the command 41 to the human body communication mobile device 11 through the human body communication 15. Upon receiving the command 41, the human body communication mobile device 11 emits the carrier 51, sends an ID acquisition command 42 to the non-contact IC card 14, and reads the ID 43 from the non-contact IC card 14. When the reading of the ID 43 is completed, the emission of the carrier 51 is stopped. Thereafter, the human body communication mobile device 11 returns the ID 43 to the human body communication fixing device 12 via the human body communication 15. Thereafter, the human body communication fixing device 12 sends an authentication command 44 including an authentication key to the human body communication mobile device 11 via the human body communication 15. Upon receiving the authentication command 44, the human body communication mobile device 11 emits the carrier 52, and executes the “authentication 1” and “authentication 2” transmission / reception processes for the non-contact IC card 14 using the authentication key. . Until the processes of “authentication 1” and “authentication 2” are completed, the emission of the carrier 52 from the human body communication mobile device 11 is continued. When the “authentication 2” process ends, the human body communication mobile device 11 stops the emission of the carrier 52, and further deletes the obtained authentication key (step 45). Thereafter, the human body communication mobile unit 11 sends information (access result) related to authentication to the human body fixing device 12 (transmission 46) via the human body communication 15, and the human body communication fixing device 12 controls the received access result. It transmits to the apparatus 13 (response 47).

Next, an authentication and reading sequence in the protected area of the non-contact IC card 14 will be described with reference to FIG. 5, the same elements as those described in FIG. 4 are denoted by the same reference numerals.
When receiving the access command 41 from the control device 13, the human body communication fixing device 12 sends the command 41 to the human body communication mobile device 11 through the human body communication 15. Upon receiving the command 41, the human body communication mobile device 11 emits the carrier 51, sends an ID acquisition command 42 to the non-contact IC card 14, and reads the ID 43 from the non-contact IC card 14. When the reading of the ID 43 is completed, the emission of the carrier 51 is stopped. Thereafter, the human body communication mobile device 11 returns the ID 43 to the human body communication fixing device 12 via the human body communication 15. Thereafter, the human body communication fixing device 12 sends a reading command 61 including an authentication key to the human body communication mobile device 11 via the human body communication 15. Upon receiving the read command 61, the human body communication mobile device 11 emits the carrier 52, and executes the “authentication 1” and “authentication 2” transmission / reception processes for the non-contact IC card 14 using the authentication key. . Thereafter, the human body communication mobile device 11 executes a “read” access process for the non-contact IC card 14. Until all processes of “authentication 1”, “authentication 2”, and “read” are completed, the emission of the carrier 52 from the human body communication mobile device 11 is continued. When the “read” access is completed, the human body communication mobile device 11 stops the emission of the carrier 52 and further deletes the obtained authentication key (step 45). Thereafter, the human body communication mobile unit 11 sends the reading content (access result) to the human body communication fixing device 12 (transmission 46) via the human body communication 15, and the human body communication fixing device 12 further transmits the received access result to the control device. 13 (response 47).

Next, another sequence of authentication and reading in the protected area of the non-contact IC card 14 will be described with reference to FIG. In FIG. 6, the same elements as those described with reference to FIG. The characteristics of this sequence are that the authentication key may be wiretapped when the authentication key is sent from the human body communication fixing device 12 to the human body communication mobile device 11 in the access shown in FIG. ”Is added to enhance the safety of the human body communication 15 between the human body communication fixing device 12 and the human body communication mobile device 11. The contents of other sequences are the same as those described in FIG.
First, the human body communication fixing device 12 receives an access command 71 from the control device 13. The access command 71 further includes an encryption key in the contents of the access command 41 described above. The human body communication fixing device 12 executes the above-described “encryption key exchange” authentication sequence 62 with the human body communication mobile device 11 via the human body communication 15. If the encryption key is not exchanged correctly, the sequence ends at this stage. When the encryption key exchange is correctly performed, the human body communication fixing device 12 sends an access command 63 to the human body communication mobile device 11 through the human body communication 15 as the next step. Upon receiving the command 63, the human body communication mobile device 11 emits the carrier 51, sends an ID acquisition command 42 to the non-contact IC card 14, and reads the ID 43 from the non-contact IC card 14. When the reading of the ID 43 is completed, the emission of the carrier 51 is stopped. Thereafter, the human body communication mobile device 11 returns the ID 43 to the human body communication fixing device 12 via the human body communication 15. Thereafter, the human body communication fixing device 12 sends a reading command 61 including an authentication key to the human body communication mobile device 11 via the human body communication 15. Upon receiving the read command 61, the human body communication mobile device 11 emits the carrier 52, and executes the “authentication 1” and “authentication 2” transmission / reception processes for the non-contact IC card 14 using the authentication key. . Thereafter, the human body communication mobile device 11 executes a “read” access process for the non-contact IC card 14. Until all processes of “authentication 1”, “authentication 2”, and “read” are completed, the emission of the carrier 52 from the human body communication mobile device 11 is continued. When the “read” access is completed, the human body communication mobile device 11 stops the emission of the carrier 52 and further deletes the obtained authentication key (step 45). Thereafter, the human body communication mobile device 11 sends the read content (access result) to the human body communication fixing device 12 via the human body communication 15 (transmission 46). Upon receiving the access result, the human body communication fixing unit 12 deletes the encryption key (step 64). Thereafter, the human body communication fixing device 12 transmits the received access result to the control device 13 (response 47).

  The configurations, shapes, sizes, and arrangement relationships described in the above embodiments are merely schematically shown to the extent that the present invention can be understood and implemented. Therefore, the present invention is not limited to the described embodiments, and can be variously modified without departing from the scope of the technical idea shown in the claims.

  The human body communication system and the human body communication card holder according to the present invention are configured to avoid mutual interference between the two communications in a human body communication mobile device that performs two communications of human body communication and non-contact IC card communication, It is possible to access the protected area of the non-contact IC card from the human body communication fixing device, and it is used for entrance / exit management and the like.

10 Human Body Communication System 11 Human Body Communication Mobile (Human Communication Card Holder)
12 Human Body Communication Fixture 13 Control Device (System Management Device)
DESCRIPTION OF SYMBOLS 14 Non-contact IC card 15 Human body communication 21 Human body communication part 22 Human body communication part 23 Control part 24 Non-contact IC card communication part 25 Non-contact IC card accommodating part 26 Protection area | region access part 31 Housing | casing 31a Insertion port 51,52 Carrier

Claims (7)

A human body communication system including a control device, a human body communication fixing device, a human body communication mobile device, and a non-contact IC card, wherein the human body communication mobile device is connected to the non-contact device from the control device via the human body communication fixing device. When receiving an authentication command for an IC card, the human body communication mobile device comprises means for executing an authentication process using an authentication command encryption key included in the authentication command .   2. The human body communication system according to claim 1, wherein a carrier is continuously emitted from the human body communication mobile device to the non-contact IC card while an authentication process is executed in the human body communication mobile device. The human body communication mobile device receives the authentication command when reading the protected area of the contactless IC card, and after the reading is completed, deletes the authentication command encryption key, and fixes the read result to the human body communication lock. The human body communication system according to claim 1, wherein the human body communication system is transmitted to a device.   The human body communication system according to any one of claims 1 to 3, wherein the human body communication mobile device is a human body communication card holder having a structure for accommodating the non-contact IC card. A non-contact IC comprising a human body communication unit, a non-contact IC card communication unit, a control unit, and a non-contact IC card housing unit, and housed in the non-contact IC card housing unit via a human body communication unit on the human body communication fixing device side When receiving an authentication command for reading a protection area of a card, the control unit executes a process of authenticating and reading the protection area using an authentication command encryption key included in the authentication command. Card holder. Wherein when authenticating the protected area of the non-contact IC card, the control unit receives the authentication command encryption key given from the human body communication unit of the human body communication fixator side, the non-contact IC card communication unit The human body communication card holder according to claim 5, wherein authentication processing is performed using the authentication command encryption key while firing a carrier through the network. When the process for the protection area of the non-contact IC card is completed, the control unit stops the carrier emission, erases the received authentication command encryption key, and the human body on the human body communication fixing device side The human body communication card holder according to claim 6 , wherein the reading result is sent to the communication unit.

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