JP4768802B2 - Terminal, key distribution system, and key distribution method - Google Patents

Description

  The present invention relates to a terminal, a key distribution system, and a key distribution method.

One user may use multiple electric locks. In this case, depending on the number of electric locks to be used, it is inconvenient to have a plurality of devices such as a plurality of IC cards or mobile phones that hold corresponding electronic keys, and the use can be difficult. For this reason, a technique is considered in which one device holds one piece of authentication information and can unlock a plurality of electric locks (Patent Document 1).
JP 2008-7992 A

  However, in the method described in Patent Document 1, there is a problem that the electric lock and the server need to be connected in a communicable state, and the configuration becomes complicated.

  Therefore, in view of the above problems, the present invention has an object to provide a terminal, a key distribution system, and a key distribution method capable of managing a plurality of electric locks by a single terminal without complicating the configuration. And

In order to solve the above-described problem, a terminal according to the present invention is a terminal that can communicate with a key distribution server and an electric lock, and includes a receiving unit that receives an electronic key including information on an expiration date from the key distribution server, and a receiving unit A first holding means for holding a plurality of received electronic keys, a selecting means for selecting one electronic key from a plurality of electronic keys held by the first holding means, and one electronic key selected by the selecting means. An electronic key transmitting means for transmitting to the electric lock, and the key distribution server is pre-registered with a scheduled entry location and scheduled entry time for each user, and a plurality of based on the scheduled entry location and scheduled entry time. The electronic key and its expiration date are determined, and the receiving means transmits the identification information that can identify the user to the key distribution server, and downloads the plurality of electronic keys of the user identified by the identification information collectively. Features.

  In the terminal according to the present invention, since it is not necessary to connect the electric lock and the key distribution server in a communicable state, a plurality of electric locks can be managed by one terminal without using a complicated configuration. Become.

  The electronic key transmitting means also includes a second holding means for holding the one electronic key selected by the selecting means, and the one electronic key held in the second holding means in response to a request for the electric lock to the electric lock. And a transmission control means for transmitting.

  According to such a terminal, only the selected one electronic key is held in the second holding means. For example, even if the capacity of the memory (corresponding to the second holding means) is small, such as an IC chip, a plurality of electronic keys cannot be held in the memory, and the plurality of electronic keys are held in the first holding means. Accordingly, by applying the present invention, it is possible to manage a plurality of electric locks with one terminal without using a complicated configuration.

  The electronic key transmitting means is preferably a non-contact IC chip. According to such a terminal, one electronic key can be held and transmitted by one IC chip.

  The receiving means preferably downloads a plurality of electronic keys from the key distribution server in a batch. According to such a terminal, it is not necessary to individually receive the electronic key when it becomes necessary, so that it is possible to improve the efficiency of the download operation.

In order to solve the above problems, a key distribution system according to the present invention includes a terminal, a key distribution server connected in a communicable state with the terminal, and an electric lock connected in a communicable state with the terminal. The key distribution server includes an electronic key transmission unit that transmits an electronic key including information related to an expiration date to the terminal, and the terminal receives the electronic key from the key distribution server. The receiving means, the first holding means for holding a plurality of electronic keys received by the receiving means, the selecting means for selecting one electronic key from among the plurality of electronic keys held by the first holding means, and the selecting means select Electronic key transmitting means for transmitting the one electronic key to the electric lock, and the electric lock is read by the electronic key reading means and the electronic key reading means for reading the one electronic key transmitted by the electronic key transmitting means. Electronic key authentication to authenticate one electronic key And the stage, and an electric lock management means for performing an open lock in accordance with the result of the authentication by the electronic key authentication means, the key distribution server, enter planned location and enter the scheduled time of each user is Yes been pre-registered, enter A plurality of electronic keys and their expiration dates are determined based on the scheduled location and the scheduled entry time, and the receiving means transmits identification information that can identify the user to the key distribution server, and the plurality of users identified by the identification information. and wherein the download on collectively the electronic key.

  According to the key distribution system of the present invention, since the electric lock and the key distribution server do not need to be connected in a communicable state, a plurality of electric locks are managed by one terminal without a complicated configuration. It becomes possible.

In order to solve the above problems, a key distribution method according to the present invention is a key distribution server that is connected in a communicable state with a terminal, and that is pre-registered with a planned entry place and scheduled entry time for each user. And a key distribution method executed by an electric lock connected in a communicable state with the terminal, wherein the terminal transmits identification information that can identify a user to the key distribution server, and key distribution The server transmits, based on the identification information, a plurality of electronic keys including information related to the expiration date to the terminal , and the terminal receives the plurality of electronic keys of the user specified by the identification information. a receiving step of downloading collectively, the terminal includes a first holding step of holding a plurality of electronic key received in the receiving step, the terminal includes a plurality of electronic key held in the first holding step A selection step of selecting one of the electronic key from the terminal, an electronic key transmitting step of transmitting an electronic key that is selected in the selection step to the electric lock, electric lock is one which has been transmitted in an electronic key transmitting step An electronic key reading step for reading the electronic key , an electronic lock authenticating one electronic key read in the electronic key reading step, and an electric lock according to the result of authentication in the electronic key authentication step And an electric lock management step for performing unlocking.

  According to the key distribution method of the present invention, the electric lock and the key distribution server do not need to be connected in a communicable state, and therefore, a plurality of electric locks are managed by one terminal without a complicated configuration. It becomes possible.

  According to the terminal, the key distribution system, and the key distribution method according to the present invention, by selecting one necessary electronic key from among the plurality of electronic keys held in the first holding means and transmitting it to the electric lock, The electronic key and the key distribution server do not need to be connected in a communicable state, and a plurality of electric locks can be managed by a single terminal without complicating the configuration.

  Hereinafter, embodiments of a terminal, a key distribution system, and a key distribution method according to the present invention will be described with reference to the drawings.

[First embodiment]
FIG. 1 is a diagram showing an overview of a key distribution system 1 according to the present embodiment. As shown in FIG. 1, the key distribution system 1 in this embodiment includes a terminal 10, a key distribution server 30, and an electric lock 40.

  The terminal 10 collectively downloads a plurality of electronic keys from the key distribution server 30, selects one electronic key from among the plurality of electronic keys downloaded together, and uses the selected one electronic key as the electric lock 40. Send.

  In the present embodiment, a mobile phone is used as the terminal 10. However, the mobile phone is not limited to a mobile phone, and is a simple mobile phone (PHS: Personal Handy-phone System) or a portable information terminal (PDA: Personal Digital Assistant) having a communication function. ), Or a notebook personal computer having a communication function.

  The key distribution server 30 is a server that distributes a plurality of electronic keys to the terminal 10. The key distribution server 30 and the terminal 10 are connected in a communicable state through a network (not shown).

  The electric lock 40 receives one electronic key from the terminal 10 and unlocks it when the electronic key is successfully authenticated.

  FIG. 2 is a diagram illustrating a functional configuration of the terminal 10 in the present embodiment. As shown in FIG. 2, the terminal 10 of this embodiment includes a receiving unit (receiving unit) 11, a first holding unit (first holding unit) 12, a selecting unit (selecting unit) 13, and an electronic key transmitting unit (electronic key). (Transmission means) 14.

  The receiving unit 11 has a function of receiving a plurality of electronic keys from the key distribution server 30 and a function of outputting the received plurality of electronic keys to the first holding unit 12. Specifically, the receiving unit 11 transmits an authentication request for requesting the key distribution server 30 to perform authentication. When the authentication in the key distribution server 30 is successful, the receiving unit 11 downloads a plurality of electronic keys from the key distribution server 30 at once.

  The first holding unit 12 has a function of inputting a plurality of electronic keys from the receiving unit 11 and holding the inputted plurality of electronic keys. In the present embodiment, the first holding unit 12 has a larger storage capacity than the second holding unit 15 described later. Therefore, it is possible to hold a plurality of electronic keys.

  Since the terminal 10 includes the first holding unit 12, the terminal 10 can hold a plurality of electronic keys.

  The selection unit 13 has a function of selecting one electronic key from among a plurality of electronic keys held by the first holding unit 12 and outputting it to the electronic key transmission unit 14. Specifically, the selection unit 13 determines one electronic key to be selected according to an instruction from the operator of the terminal 10, and obtains one electronic key to be selected by referring to the first holding unit 12. The selection unit 13 outputs the one electronic key obtained from the first holding unit 12 to the electronic key transmission unit 14.

  Since the terminal 10 has the selection unit 13, an appropriate electronic key is selected from the plurality of electronic keys held by the first holding unit 12, and the electronic key transmission unit 14 selects the appropriate one electronic key. Can be entered.

  The electronic key transmission unit 14 has a function of holding one electronic key selected and output by the selection unit 13 and a function of transmitting the electronic key to the electric lock 40 in response to a request from the electric lock 40.

  Specifically, the electronic key transmission unit 14 includes a second holding unit (second holding unit) 15 and a transmission control unit (transmission control unit) 16.

  The second holding unit 15 has a function of holding one electronic key selected by the selection unit 13. The second holding unit 15 of this embodiment has a smaller capacity than the first holding unit 12. The second holding unit 15 can hold one electronic key. Further, the second holding unit 15 is not limited in the number of times of rewriting information held. The selection unit 13 can output the selected electronic key to the second holding unit 15 any number of times. When the new one electronic key is output, the old electronic key held by the second holding unit 15 is deleted and replaced with the new one electronic key.

  The transmission control unit 16 has a function of transmitting one electronic key held in the second holding unit 15 to the electric lock 40 in response to a request from the electric lock 40. Specifically, when receiving a trigger signal as an electronic key transmission request transmitted by the electric lock 40, the transmission control unit 16 transmits one electronic key held by the second holding unit 15 to the electric lock 40.

  The electronic key transmission unit 14 may inquire of the operator of the terminal 10 whether or not transmission is possible before transmitting one electronic key to the electric lock 40. In addition, encryption may be requested from the operator before transmission.

  The case where the transmission control unit 16 receives the trigger signal generated by the electric lock 40 refers to a case where the electric lock 40 and the terminal 10 are at a distance that the electric wave of the trigger signal reaches, that is, a short distance. Therefore, when the operator of the terminal 10 holds the terminal 10 over the electric lock 40, the electronic key transmission unit 14 transmits one electronic key to the electric lock 40.

  FIG. 3 is a diagram showing a functional configuration of the key distribution server 30 in the present embodiment. As shown in FIG. 3, the key distribution server 30 in the present embodiment includes a user information holding unit 31, a terminal authentication unit 32, an electric lock information holding unit 33, and an electronic key transmission unit (electronic key transmission unit) 34. Consists of.

  In the user information holding unit 31, user information is registered in advance as information about a person who can use the key distribution system 1 according to the present invention.

  The terminal authentication unit 32 receives the authentication request transmitted by the terminal 10 and introduces it into the terminal 10 and the terminal 10 based on the information included in the authentication request and the information held in the user information holding unit 31. It has a function to authenticate registered applications. When the authentication of the terminal 10 and the application is successful, information indicating that the authentication is successful is output to the electronic key transmission unit 34. When the authentication of the terminal 10 or the application fails, the terminal authentication unit 32 preferably disconnects the communication session between the terminal 10 and the key distribution server 30.

  By providing the key distribution server 30 with the terminal authentication unit 32 and the user information holding unit 31, it becomes impossible to connect to the key distribution server 30 except for an authorized user registered in advance. As a result, it is possible to obtain an effect that only the authorized user can use the key distribution system 1.

  The electric lock information holding unit 33 holds information related to the electric lock 40 managed by the key distribution server 30 and a corresponding electronic key.

  The electronic key transmission unit 34 has a function of transmitting a plurality of electronic keys to the terminal 10. Specifically, when the electronic key transmission unit 34 inputs information indicating that the authentication is successful from the terminal authentication unit 32, the electronic key transmission unit 34 refers to the electric lock information holding unit 33 and obtains a plurality of electronic keys to be transmitted to the terminal 10. . Next, the electronic key transmission unit 34 transmits the plurality of electronic keys to the terminal 10 at once.

  FIG. 4 is a diagram showing a functional configuration of the electric lock 40 in the present embodiment. As shown in FIG. 4, an electric lock 40 according to this embodiment includes an electronic key reading unit (electronic key reading unit) 41, an electronic key authentication unit (electronic key authentication unit) 42, and an electric lock management unit (electric lock management unit). 43).

  The electronic key reading unit 41 has a function of periodically transmitting a trigger signal, a function of reading one electronic key transmitted from the terminal 10, and a function of outputting the read one electronic key to the electronic key authentication unit 42.

  One electronic key read by the electronic key reading unit 41 includes at least information related to an expiration date and information for identifying the electric lock 40. Further, it is preferable that information on an electronic signature for confirming that the electronic key has been properly issued by the key distribution server 30 and that the electronic key has not been illegally changed is included.

  The electronic key authenticating unit 42 has a function of inputting one electronic key read by the electronic key reading unit 41 and authenticating one electronic key. Specifically, it is confirmed whether the electronic key is normally issued by the key distribution server 30 and has not been illegally changed. This can be realized by a technique such as electronic signature. Next, it is confirmed that the electronic key is currently valid from the information regarding the expiration date included in one electronic key. The information regarding the expiration date includes at least information on the expiration date start time and the expiration date. The electronic key authenticating unit 42 obtains the current time from a clock (not shown) provided in the electric lock 40. If the current time is between the expiration date start time and the expiration date end time, it is confirmed that the current time is valid. The electronic key authentication unit 42 outputs the authentication result to the electric lock management unit 43. The electronic key authenticating unit 42 determines that the authentication has succeeded only when it has been confirmed that all the information has been properly issued by the key distribution server 30, has not been tampered with, and is valid at the current time. Is preferred.

  The electric lock management unit 43 has a function of performing an unlocking process in accordance with the authentication result input from the electronic key authentication unit 42. Specifically, when the information about the contents of successful authentication of the electronic key is input from the electronic key authentication unit 42, the electric lock management unit 43 performs the unlocking process. When the information on the content of the electronic key authentication failure is input from the electronic key authentication unit 42, the electric lock management unit 43 does not perform the unlocking process.

  Next, the relationship between the above-described functions and the hardware configuration will be described with reference to FIGS.

  FIG. 5 is a diagram illustrating a hardware configuration of the terminal 10. As shown in FIG. 5, the terminal 10 in this embodiment physically includes a control device 101 such as a CPU (Central Access Memory), a memory 102 such as a volatile semiconductor such as a RAM (Random Access Memory), a base station, and the like. Communication device 103 for controlling wireless communication between them, ROM 104, scratch pad 105 which is an application data storage area, input device 106 such as numeric keypad, output device 107 such as LCD (Liquid Crystal Display) or organic EL display, and non A contact IC chip (non-contact integrated circuit chip) 108 is included.

  Among the functions of the terminal 10, the function of the receiving unit 11 is physically realized by controlling the communication device 103 by an application read on the control device 101, the ROM 104, and the memory 102.

  The function of the first holding unit 12 is physically realized by controlling the scratch pad 105 by an application read on the control device 101, the ROM 104, and the memory 102. The scratch pad 105 is a setting in which a storage area in the terminal 10 is allocated for each application, and cannot be accessed from applications other than the allocated application. The data in the scratch pad 105 is preferably encrypted. Thereby, even if the terminal 10 is lost, it is possible to prevent unauthorized use of the electronic key.

  In the present embodiment, the scratch pad 105 is used as a specific example of the storage location of a plurality of electronic keys. However, the information provided in the terminal 10 is temporarily stored without being limited to the scratch pad 105. It may be a memory medium or a temporary storage area and an application data storage area that can be managed from an application.

  The function of the selection unit 13 is that the applications read on the control device 101, the ROM 104, and the memory 102 are physically read from the scratch pad 105 and the memory 102 in accordance with instructions from the operator of the terminal 10 that are physically input via the input device 106. This is realized by controlling the non-contact type IC chip 108.

  Here, a method in which the operator of the terminal 10 selects one electronic key from among a plurality of electronic keys held on the scratch pad 105 will be described with reference to FIG. FIG. 6 is a diagram showing an example of the input device 106, and shows a state where five electronic keys are stored in the scratch pad 105. In FIG. 6, a portion displayed as “Theater Room” is a portion that displays a place where the corresponding electric lock 40 is installed. The portion displayed as “November 15 13: 00 to 14:00” is a portion for displaying the expiration date of the electronic key. When the operator of the terminal 10 selects the “theater room” electronic key, the input device 106 sends information indicating that the electronic key corresponding to “theater room” has been selected to the control device 101. Subsequently, the application read on the control device 101, the ROM 104, and the memory 102 cooperates to read out an electronic key corresponding to the “theater room” stored in the scratch pad 105, and the non-contact type IC chip 108. To remember. At this time, if the electronic key is already stored in the non-contact IC chip 108, the old information is erased and rewritten with new information.

  The function of the electronic key transmission unit 14 is physically realized by controlling the non-contact type IC chip 108 by an application read on the control device 101, the ROM 104, and the memory 102. For example, Felica (registered trademark) can be used as the non-contact type IC chip 108.

  The electric lock 40 periodically transmits a trigger signal as an electronic key transmission request. When the non-contact IC chip 108 receives a trigger signal periodically transmitted by the electric lock 40, the applications read on the control device 101, the ROM 104, and the memory 102 cooperate to form a non-contact type. The IC chip 108 is controlled, and one electronic key stored in the non-contact type IC chip 108 is transmitted to the electric lock 40. Before transmitting one electronic key, the application read on the control device 101, the ROM 104, and the memory 102 controls the input device 106 and the output device 107, thereby providing the electronic key to the operator of the terminal 10. You may inquire about the possibility of transmission to the lock 40. In this case, for example, “Do you want to send the electronic key?” May be displayed on a display which is a part of the output device 107. When an input to the effect that the operator of the terminal 10 may transmit is performed via the input device 106, one electronic key is transmitted to the electric lock 40. Furthermore, the operator of the terminal 10 may be requested to input encryption.

  FIG. 7 is a diagram illustrating a hardware configuration of the key distribution server 30. As shown in FIG. 7, the key distribution server 30 according to the present embodiment physically includes a control device 301 such as a CPU (Central Access Memory), a memory 302 such as a volatile semiconductor such as a RAM (Random Access Memory), a LAN, and the like. (Local Area Network) communication control device such as a communication control card or board 303, ROM 304, input device 306 such as keyboard, output device 307 such as LCD (Liquid Crystal Display) or organic EL display, and hard disk An auxiliary storage device 308 is included.

  Among the functions of the key distribution server 30, the function of the user information holding unit 31 is that the software read in the control device 301, the ROM 304, and the memory 302 is physically controlled by the auxiliary storage device 308. It is realized with.

  The function of the terminal authentication unit 32 is physically realized by controlling the communication device 303 and the auxiliary storage device 308 by software loaded on the control device 301, the ROM 304, and the memory 302.

  The function of the electric lock information holding unit 33 is physically realized by controlling the auxiliary storage device 308 by software read on the control device 301, the ROM 304, and the memory 302.

  The function of the electronic key transmitting unit 34 is physically realized by controlling the communication device 303 and the auxiliary storage device 308 by software read on the control device 301, the ROM 304, and the memory 302.

  Here, a method for selecting a plurality of electronic keys to be transmitted to the terminal 10 from the electronic keys held in the auxiliary storage device 308 by the key distribution server 30 will be described. When the key distribution system 1 according to the present invention is used by an individual, for example, as shown in FIG. It is possible to download all at once. In such a case, the user transmits information on the location of the electric lock that the user wants to download to the key distribution server 30.

  On the other hand, the usage scene of the key distribution system 1 according to the present invention can be assumed to be used by, for example, a guardman, a pet sitter, or a house agent. In such a usage scene, the scheduled entry location and scheduled entry time for each user are registered in the key distribution server 30 in advance, and a plurality of types of electronic keys that are accurate based on the pre-registered information and An expiration date is set. By transmitting an identification number that can identify an individual to the key distribution server 30, the user can download the plurality of accurate electronic keys in a batch.

  The function of the electronic key reading unit 41 in the electric lock 40 is physically realized by, for example, a Felica (registered trademark) reader (not shown).

  FIG. 8 is a sequence diagram showing a flow of processing of the key distribution system 1 in the present embodiment. The process flow of the key distribution system 1 in this embodiment will be described with reference to FIG.

  The application installed in the terminal 10 makes an authentication request to the key distribution server 30 (step S101). Step S101 is processing corresponding to the function of the receiving unit 11 in FIG. Here, the application installed in the terminal 10 refers to an application that downloads an electronic key. The application in the present embodiment is preferably an application dedicated to downloading an electronic key. Further, it is desirable that the application itself is authenticated by the key distribution server 30. Furthermore, it is preferable that only the application and the electric lock 40 are accessible to a plurality of electronic keys held on the scratch pad 105 and one electronic key held on the non-contact type IC chip 108. .

  When receiving the authentication request from the application, the key distribution server 30 authenticates the application and the terminal 10 (step S102). Step S102 is processing corresponding to the function of the terminal authentication unit 32 in FIG.

  If the authentication is successful (“OK” in step S102), the key distribution server 30 transmits a plurality of electronic keys at once. In the example shown in FIG. 8, three electronic keys of key1, key2, and key3 are transmitted. The application receives (downloads) a plurality of electronic keys transmitted by the key distribution server 30 (step S103: electronic key transmission step, reception step). Step S103 is processing corresponding to the functions of the receiving unit 11 in FIG. 2 and the electronic key transmitting unit 34 in FIG.

  When a plurality of electronic keys are downloaded, the application holds the downloaded plurality of electronic keys (key1, key2, and key3) in the scratch pad 105, which is an application data storage area (step S104: first holding step). Step S104 is processing corresponding to the functions of the receiving unit 11 and the first holding unit 12 in FIG.

  The application selects one electronic key from among a plurality of electronic keys stored in the scratch pad 105 based on an instruction from the operator of the terminal 10 (step S105: selection step). Step S105 is processing corresponding to the function of the selection unit 13 in FIG. In the example shown in FIG. 8, key2 is selected.

  The application writes the selected one electronic key (Key2) in the non-contact type IC chip 108 (step S106). Step S106 is processing corresponding to the functions of the selection unit 13 and the electronic key transmission unit 14 in FIG.

  The non-contact type IC chip 108 holds one electronic key selected by the application (step S107). Step S107 is processing corresponding to the function of the electronic key transmission unit 14 in FIG. In the example of FIG. 8, Key 2 is held by the non-contact type IC chip 108. In the present embodiment, the non-contact IC chip 108 holds one electronic key. The non-contact type IC chip 108 can be rewritten by an application. When a new electronic key is selected by the application, the non-contact type IC chip 108 is newly selected as one electronic key to be held. Update with the electronic key.

  The electric lock 40 transmits a trigger signal at regular intervals (step S108). Step S108 is processing corresponding to the function of the electronic key reading unit 41 of FIG. When the non-contact type IC chip 108 receives the trigger signal transmitted by the electric lock 40, the non-contact type IC chip 108 transmits one electronic key held (step S109: electronic key transmission step, electronic key reading step). Step S109 is processing corresponding to the functions of the electronic key transmission unit 14 in FIG. 2 and the electronic key reading unit 41 in FIG. The non-contact type IC chip 108 refers to, for example, Felica (registered trademark).

  When receiving the one electronic key transmitted from the terminal 10, the electric lock 40 authenticates the one electronic key (step S110: electronic key authentication step). Step S110 is processing corresponding to the function of the electronic key authentication unit 42 in FIG. Authentication is performed using electronic signature technology to confirm that one electronic key transmitted from the terminal 10 is an electronic key that has been properly issued by the key distribution server 30 and that one electronic key has not been tampered with. To do. Next, it is confirmed from the information regarding the validity period included in one electronic key that the current time is within the validity period.

  When the authentication is successful (“OK” in step S110), the electric lock 40 performs unlocking (step S111: electric lock management step). Step S111 is processing corresponding to the function of the electric lock management unit 43 in FIG.

  Next, functions and effects in the present embodiment will be described.

  The terminal 10 in this embodiment is a terminal 10 that can communicate with the key distribution server 30 and the electric lock 40, and includes a receiving unit 11 that receives an electronic key from the key distribution server 30, and an electronic key received by the receiving unit 11. A first holding unit 12 that holds a plurality of keys, a selection unit 13 that selects one electronic key from a plurality of electronic keys held by the first holding unit 12, and a single electronic key selected by the selection unit 13 And the transmission control unit 16 for transmitting one electronic key held in the second holding unit 15 to the electric lock 40 in response to a request from the electric lock 40. 40 and the key distribution server 30 do not need to be connected in a communicable state, so that it is possible to manage a plurality of electric locks with one terminal without using a complicated configuration. Furthermore, since the second holding unit 15 holds only one selected electronic key, the capacity of the memory (corresponding to the second holding means) is small, for example, like an IC chip, and a plurality of electronic keys are stored in the memory. Even when the key cannot be held, the first holding unit 12 can hold a plurality of electronic keys.

  In addition, the receiving unit 11 downloads a plurality of electronic keys from the key distribution server 30 in a lump, so that it is not necessary to individually receive the electronic keys when they are needed. Can be achieved.

  Further, since the second holding unit 15 is a non-contact type IC chip 108, it is possible to realize holding and transmission of one electronic key with one IC chip.

  In the above embodiment, the electronic key has been described using the time key including the information about the validity period, but may be a fixed key. For example, it is conceivable to issue a time key to a guardman, pet sitter, housework agent, or the like described in the explanation of the use scene, and a fixed key to residents.

[Second Embodiment]
In the embodiment, the selected electronic key is stored in the non-contact IC chip 108 and transmitted to the electric lock 40. For example, a short-range wireless communication such as Bluetooth (registered trademark) is used. It is also possible to do. Hereinafter, an embodiment in the case of using near field communication such as Bluetooth will be described. However, the description of the same parts as those in the first embodiment is omitted here.

  FIG. 9 is a diagram illustrating a functional configuration of the terminal 10 in the present embodiment. The difference from the first embodiment is that the electronic key transmission unit 14 a does not have the second holding unit 15.

  The electronic key transmission unit 14a has a function of inputting one electronic key selected by the selection unit 13 and transmitting it to the electric lock.

  Other functions of the terminal 10 are the same as the functions of the terminal 10 in the first embodiment. The functions of the key distribution server 30 and the electric lock 40 in the present embodiment are the same as the functions of the key distribution server 30 and the electric lock 40 in the first embodiment.

  FIG. 10 is a diagram illustrating a hardware configuration of the terminal 10 in the present embodiment. The difference from the hardware configuration of the terminal 10 in the first embodiment is that the contactless IC chip 108 is not provided, and the short-range communication module that performs short-range wireless communication between the terminal 10 and the key distribution server 30. 110.

  The function of the electronic key transmission unit 14 a in the present embodiment is realized by the application read on the control device 101, the ROM 104, and the memory 102 controlling the short-range communication module 110. For example, a Bluetooth method can be used as the control method.

  FIG. 11 is a sequence diagram showing the flow of processing of the key distribution system 1 in the present embodiment. The process flow of the key distribution system 1 in this embodiment will be described with reference to FIG.

  Steps S201 to S205 in FIG. 11 are the same as steps S101 to S105 in the first embodiment.

  The application instructs the short-range communication module 110 to transmit the selected one electronic key to the electric lock 40 (step S206: electronic key transmission step). Step S206 is processing corresponding to the function of the electronic key transmission unit 14a in FIG. In the example shown in FIG. 11, Key2 is selected.

  The short-range communication module 110 receives the selected one electronic key and transmits it to the electric lock 40. The electric lock 40 receives one electronic key transmitted from the terminal 10 (step S207: electronic key transmission step, electronic key reading step). Step S207 is processing corresponding to the functions of the electronic key transmission unit 14a in FIG. 9 and the electronic key reading unit 41 in FIG.

  The electric lock 40 authenticates the received one electronic key (step S208: electronic key authentication step). Step S208 is processing corresponding to the function of the electronic key authentication unit 42 in FIG. The authentication method is the same as the authentication method of the first embodiment. If the authentication is successful, the electric lock 40 performs unlocking (step S209: electric lock management step). Step S209 is processing corresponding to the function of the electric lock management unit 43 in FIG.

  Next, functions and effects in the present embodiment will be described.

  The terminal 10 in this embodiment is a terminal 10 that can communicate with the key distribution server 30 and the electric lock 40, and includes a receiving unit 11 that receives an electronic key from the key distribution server 30, and an electronic key received by the receiving unit 11. A first holding unit 12 that holds a plurality of keys, a selection unit 13 that selects one electronic key from among a plurality of electronic keys that the first holding unit 12 holds, and an electronic key selected by the selection unit 13 By providing the electronic key transmission unit 14a that transmits to the lock 40, the electric lock 40 and the key distribution server 30 do not need to be connected in a communicable state, and therefore, one terminal without a complicated configuration. 10, the plurality of electric locks 40 can be managed.

It is a figure which shows the outline | summary of the key distribution system which concerns on embodiment. It is a figure which shows the function structure of the terminal in 1st embodiment. It is a figure which shows the function structure of the key distribution server in 1st embodiment and 2nd embodiment. It is a figure which shows the function structure of the electric lock in 1st embodiment and 2nd embodiment. It is a figure which shows the hardware constitutions of the terminal in 1st embodiment. It is a figure which shows the example of the input device in 1st embodiment and 2nd embodiment. It is a figure which shows the hardware constitutions of the key distribution server in 1st embodiment and 2nd embodiment. It is a sequence diagram which shows the flow of a process of the key distribution system in 1st embodiment. It is a figure which shows the function structure of the terminal in 2nd embodiment. It is a figure which shows the hardware constitutions of the terminal in 2nd embodiment. It is a sequence diagram which shows the flow of a process of the key distribution system in 2nd embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Key distribution system, 10 ... Terminal, 11 ... Reception part, 12 ... 1st holding | maintenance part, 13 ... Selection part, 14 ... Electronic key transmission part, 14a ... Electronic key transmission part, 15 ... Second holding part, 16 ... Transmission control unit, 30 ... key distribution server, 31 ... user information holding unit, 32 ... terminal authentication unit, 33 ... electric lock information holding unit, 34 ... electronic key transmission unit, 40 ... electric lock, 41 ... electronic key reading unit 42, an electronic key authentication unit, 43, an electric lock management unit, N, a network.

Claims (6)

A terminal that can communicate with the key distribution server and the electric lock;
Receiving means for receiving an electronic key including information relating to an expiration date from the key distribution server;
First holding means for holding a plurality of the electronic keys received by the receiving means;
Selecting means for selecting one electronic key from among a plurality of electronic keys held by the first holding means;
Electronic key transmitting means for transmitting the one electronic key selected by the selecting means to the electric lock;
Equipped with a,
In the key distribution server, a scheduled entry place and a scheduled entry time for each user are registered in advance, and a plurality of electronic keys and their expiration dates are determined based on the scheduled entry place and the scheduled entry time. And
Terminal the receiving means, which transmits the identification information of the user can be specified in the key distribution server, and wherein the download on the identification information collectively the plurality of electronic keys of the user identified. The electronic key transmitting means includes
Second holding means for holding the one electronic key selected by the selection means;
Transmission control means for transmitting the one electronic key held in the second holding means to the electric lock in response to a request for the electric lock;
The terminal according to claim 1, comprising: It said electronic key transmitting unit terminal according to claim 1 or 2, characterized in that a contactless IC chip. A key distribution system comprising a terminal, a key distribution server connected in a communicable state with the terminal, and an electric lock connected in a communicable state with the terminal,
The key distribution server includes an electronic key transmission unit that transmits an electronic key including information related to an expiration date to the terminal.
The terminal
Receiving means for receiving the electronic key from the key distribution server;
First holding means for holding a plurality of the electronic keys received by the receiving means;
Selecting means for selecting one electronic key from among a plurality of electronic keys held by the first holding means;
An electronic key transmission means for transmitting the one electronic key selected by the selection means to the electric lock;
The electric lock includes an electronic key reading means for reading the one electronic key transmitted by the electronic key transmitting means,
An electronic key authenticating means for authenticating the one electronic key read by the electronic key reading means;
Electric lock management means for unlocking according to the result of authentication by the electronic key authentication means;
Equipped with a,
In the key distribution server, a scheduled entry place and a scheduled entry time for each user are registered in advance, and a plurality of electronic keys and their expiration dates are determined based on the scheduled entry place and the scheduled entry time. And
It said receiving means transmits the identification information that can identify the user to the key distribution server, key distribution, wherein download on the identification information collectively the plurality of electronic keys of the user identified system.   The electronic key authenticating unit confirms whether the one electronic key is valid at the current time based on information related to the expiration date of the one electronic key read by the electronic key reading unit, and is valid The key distribution system according to claim 4, wherein the authentication is determined to be successful. A terminal, a key distribution server connected to the terminal in a communicable state, a pre-registered place and a scheduled entry time for each user , and an electric lock connected in a communicable state with the terminal A key distribution method executed by
The terminal transmits identification information that can identify a user to the key distribution server;
The key distribution server , based on the identification information, an electronic key transmission step of transmitting a plurality of electronic keys including information related to an expiration date to the terminal;
The terminal is a receiving step of collectively downloading a plurality of the electronic keys of users specified by the identification information ;
The terminal holds a plurality of electronic keys received in the receiving step;
The terminal selects a single electronic key from a plurality of electronic keys held in the first holding step;
The terminal transmits the one electronic key selected in the selecting step to the electric lock;
The electric lock includes an electronic key reading step of reading the one electronic key transmitted before Symbol electronic key transmitting step,
The electric lock is an electronic key authentication step for authenticating the one electronic key read in the electronic key reading step;
The electric lock is an electric lock management step for unlocking according to the result of authentication in the electronic key authentication step;
A key distribution method comprising:

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