JP4725893B2 - Electronic lock opening and closing system - Google Patents

Description

  The present invention relates to an electronic lock opening / closing system, and more particularly to an electronic lock opening / closing system for unlocking an electronic lock with an electronic key.

  Doors that are not desired to be opened and closed by outsiders, such as houses and safes, are usually provided with a lock, and can be unlocked and locked only with a key corresponding to this lock. In general, a physical lock and a key are used, and unlocking / locking is performed by inserting the key body into a key hole formed in the lock and rotating it. At this time, the key that matches the physical shape of the keyhole of the lock is used as a pair, and by manufacturing a lock and a key having a different shape for each pair, unauthorized opening by a third party is suppressed. Yes. In addition, the user has dealt with the risk of loss by creating a copy of the key.

  However, the above-described physical lock and key have a problem that they can be unlocked with a specific tool or the like without a key body. In addition, since it has a physical shape, the paired lock and key are always in a fixed shape, which makes it easy to create a copy. Furthermore, since the key is physical, there is a problem that when the key is damaged such as deformed, it cannot be used. On the other hand, in order to avoid the risk of loss or the loss of use, it is necessary to create a physical copy key. was there. Further, if there are a plurality of doors, it is necessary to prepare a plurality of physical keys.

  As described above, in the case of physical locks and keys that have been used conventionally, there have been many anxiety factors in unlocking the lock by picking action or unauthorized duplication. In addition, when the key is lost, it is necessary to replace all the keys such as locks, spare keys, and keys held by family members, which is troublesome.

  On the other hand, in order to improve the disadvantages of the physical lock / key described above, in recent years, an electronic key code is input from the electronic key to the electronic lock, and the electronic lock is unlocked / locked based on the electronic key code. An electronic lock opening and closing system has been developed. One example thereof is disclosed in Patent Document 1 below. In the electronic lock system described in Patent Document 1, the electronic key code is changed for each unlocking to enhance security.

  However, in the above-described system, although the electronic key code that is a key is changed for each unlocking, if the code on the electronic lock side matches the code on the electronic key side, the unlocking can be performed. If it is generated by fraud, there is a possibility that it may be unlocked by a third party. Therefore, there is a problem that it is not possible to further enhance security.

JP 2005-155236 A

  Therefore, an object of the present invention is to provide an electronic lock opening / closing system with high security of the electronic lock.

An electronic lock opening and closing system according to one aspect of the present invention is
An electronic key having an unlocking operation means for storing the electronic key code and transmitting the electronic key code to the electronic lock during the unlocking operation, and an unlocking process for unlocking based on the electronic key code received from the electronic key An electronic lock having means,
Electronic key code generation means for newly generating an electronic key code including old key data which is at least part of information of an electronic key code used in the past and new key data which is newly generated information;
An electronic key code storage processing means for storing an electronic key code newly generated by the electronic key code generation means at least in an electronic key;
It has the structure of having.

  According to the present invention, the electronic key code used for unlocking the electronic lock includes the old key data which is at least a part of information of the electronic key code used in the past and the new key data which is new information. Since it is generated, unauthorized generation of an electronic key code by a third party can be suppressed, and unlocking due to fraud can be suppressed. Therefore, it has an excellent effect that the security of the electronic lock can be improved, which is unprecedented.

  The present invention is a system for electronically controlling an electronic lock and an electronic key attached to a door or the like to perform unlocking and locking. The electronic key code for associating the electronic lock with the electronic key is rewritten to a new one at a predetermined timing such as at the time of locking, and has a configuration that cannot be easily duplicated. This enhances the security of the electronic lock and improves the sense of security for the user's key. The electronic lock in the present invention is also applied to doors of boxes that manage important items such as doors of buildings that are concerned about crime prevention, such as doors for houses (entrances, etc.) and doors of offices. The object to which the electronic lock is attached is not limited.

And the electronic lock opening and closing system which is one form of the present invention,
An electronic key having an unlocking operation means for storing the electronic key code and transmitting the electronic key code to the electronic lock during the unlocking operation, and an unlocking process for unlocking based on the electronic key code received from the electronic key An electronic lock having means,
Electronic key code generation means for newly generating an electronic key code including old key data which is at least part of information of an electronic key code used in the past and new key data which is newly generated information;
An electronic key code storage processing means for storing an electronic key code newly generated by the electronic key code generation means at least in an electronic key;
It has the structure of having.

  The electronic key code storage processing means also stores the electronic key code newly generated by the electronic key code generation means in the electronic lock, and the unlock processing means provided in the electronic lock receives the electronic key from the electronic key. The configuration is such that unlocking is performed by comparing the electronic key code with the electronic key code stored in itself. Further, the electronic key code generation means and the electronic key code storage processing means are provided with an electronic lock and are configured to operate when the electronic lock is locked.

  According to the system using the electronic lock and the electronic key according to the invention, the electronic key code used for unlocking the electronic lock is replaced with old key data that is at least part of the electronic key code used in the past, and a new It is generated including new key data that is information. That is, the electronic lock performs the unlocking process based on the old key data and the new key data that are part of the past electronic key code included in the electronic key code transmitted from the electronic key. Therefore, since the information included in the electronic key code used in the past is also an unlocking condition, unlocking due to fraud can be suppressed, and the security of the electronic lock can be improved.

  In addition to the above-described configuration, the electronic key code generation means provided in the electronic lock receives the electronic key code from the electronic key at the time of locking, and the received electronic key code and the electronic key code stored in the electronic lock And a new electronic key code is generated according to the comparison result.

  As a result, the new electronic key code is generated when the electronic key code received from the electronic key matches the stored code at the time of locking. Therefore, only when the electronic key having the matching electronic key code is locked, the electronic key generates a new unlockable electronic key code and stores it in the electronic key. it can. As a result, the security of the electronic lock can be further improved.

  Further, the electronic key code generation means is configured to generate a new electronic key code by using at least a part of information of the electronic key code used at the time of the previous unlocking as old key data. Further, the electronic key code generation means adopts a configuration in which new key data included in the electronic key code used at the time of the previous unlocking is set to the old key data of the newly generated electronic key code. Yes. Further, the electronic key code generation means adopts a configuration in which the old key data and the new key data are respectively encrypted and included in a newly generated electronic key code.

  Thereby, since the electronic key code is generated including a part of information of the electronic key code used at the time of the previous unlocking, the electronic key to be used can be further limited. Accordingly, it is possible to further improve security. Further, since the old key data and the new key data are separately encrypted and included in the electronic key code, the electronic key code can be protected, and unauthorized unlocking can be suppressed.

  The electronic key code generation means newly generates an electronic key code including lock specifying information unique to the electronic lock to be unlocked, and the unlock processing means of the electronic lock receives the electronic key received from the electronic key. A configuration is adopted in which unlocking is performed when the code contains its own lock identification information. Thus, by storing each lock specifying information for specifying a plurality of electronic locks in one electronic key code, the plurality of electronic locks can be unlocked with one electronic key code. Therefore, the convenience can be improved.

  Further, in addition to the above configuration, the electronic lock includes a management server connected to the electronic lock via a network, and the electronic key code storage processing means provided in the electronic lock transmits the newly generated electronic key code to the management server. The management server is configured to store the electronic key code received from the electronic lock. Thereby, the newly generated electronic key code can be stored in the management server, and it is possible to respond quickly and appropriately when the key is lost.

Moreover, the electronic lock which is the other form of this invention is
The electronic key code is stored and has an unlocking processing means for unlocking based on the electronic key code received from the electronic key transmitted to the electronic lock during the unlocking operation,
Electronic key code generation means for newly generating an electronic key code including old key data which is at least part of information of an electronic key code used in the past and new key data which is newly generated information;
An electronic key code storage processing means for storing an electronic key code newly generated by the electronic key code generation means at least in an electronic key;
It has the structure of having.

Moreover, the program which is the other form of this invention is:
An electronic lock having an unlocking processing means for storing an electronic key code and unlocking the electronic key code based on the electronic key code received from the electronic key transmitted to the electronic lock during the unlocking operation,
Electronic key code generation means for newly generating an electronic key code including old key data which is at least part of information of an electronic key code used in the past and new key data which is newly generated information;
An electronic key code storage processing means for storing an electronic key code newly generated by the electronic key code generation means at least in an electronic key;
Is adopted.

In addition, an electronic key which is another embodiment of the present invention is
An electronic key having an unlocking operation means for storing the electronic key code and transmitting the electronic key code to the electronic lock during the unlocking operation,
An electronic key code that includes old key data that is at least part of information of a previously used electronic key code and new key data that is newly generated information, which is newly generated and transmitted by an electronic lock. Electronic key code storage processing means for receiving and storing,
The structure is adopted.

Furthermore, an electronic lock opening and closing method according to another embodiment of the present invention includes:
An unlocking operation step in which the electronic key storing the electronic key code transmits the electronic key code to the electronic lock during the unlocking operation, and the unlocking is performed based on the electronic key code received from the electronic key by the electronic lock. And having a processing step,
Prior to the unlocking operation step, the electronic lock has an electronic key code including old key data that is at least part of information of an electronic key code used in the past and new key data that is newly generated information. A newly generated electronic key code generation step, and an electronic key code storage processing step in which the electronic lock stores the newly generated electronic key code in at least the electronic key,
The structure is adopted.

  Even the invention of the electronic lock, the electronic key, the program, and the method having the above-described configuration operates in the same manner as the electronic lock opening / closing system, and thus the above-described object of the present invention can be achieved. Hereinafter, a specific configuration will be described in Examples.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the overall configuration of the electronic lock opening / closing system. FIG. 2 is a block diagram illustrating a configuration of the electronic lock, and FIG. 3 is a functional block diagram illustrating a configuration of a control unit incorporated in the electronic lock. FIG. 4 is a block diagram showing the configuration of the electronic key, and FIG. 5 is a functional block diagram showing the configuration of the control unit incorporated in the electronic key. FIG. 5 is a block diagram showing the configuration of the management server. FIG. 7 is a diagram showing the configuration of the electronic key code. 8 to 13 are diagrams showing the operation of the electronic lock opening and closing system. FIG. 14 is a block diagram showing another example of the overall configuration of the electronic lock opening / closing system.

[Constitution]
As shown in FIG. 1, the electronic lock opening / closing system in this embodiment includes an electronic lock 1 attached to a door D or the like, an electronic key 3 paired with the electronic lock 1, and an electronic lock 1 via a network N. And a management server 4 that manages the key information. The electronic key code 5 is transmitted and received between the electronic lock 1 and the electronic key 3. Hereinafter, each configuration will be described in detail.

  As shown in FIG. 2, an electronic lock 1 includes a lock 11 including a physical lock, a display unit 12 having operation check lamps such as an unlocking lamp, and a recording unit 13 in which key information is recorded. A network communication unit 14 that communicates with the management server 4, a connection unit 15 that can be connected to an operation panel or a personal computer for maintenance, a date and time unit 16 that manages date and time, and an electronic key 3 A code communication unit 17 for exchanging information, a connection detection unit (open) 18 and a connection detection unit (closed) 19 for detecting that the electronic key 3 is connected, and for controlling the decryption of the key information. A control unit 20, a calculation unit 21 that performs decryption calculation, and a power supply unit 22 that supplies electricity to activate each unit are provided.

  Specifically, the control unit 20 incorporates a predetermined program, so that as shown in FIG. 3, a lock opening / closing processing unit 20a, a key code generation processing unit 20b, and a key code storage processing unit. 20c is constructed. The key opening / closing processing unit 20a (unlocking processing means) controls the unlocking and locking of the lock 11 based on the electronic key code 5 received from the electronic key 3. The specific unlocking / locking determination process based on the electronic key code 5 will be described in detail when the operation is described later.

  The key code generation processing unit 20b (electronic key code generation means) has a function of newly generating the electronic key code 5 at the time of locking. That is, the key code generation processing unit 20b operates to update the electronic key code 5 each time a lock notification is received by the lock opening / closing processing unit 20a. The generated electronic key code 5 is, for example, as shown in FIG. 7, a “communication number 51” that is rewritten at the same time as the electronic key code 5 is updated, and a unique unique number portion possessed by the electronic key 3 itself. "Key unique number 52", "Key information number (new) 53" for storing the latest key data, "Key information number (old) 54" for storing key data immediately before the latest, corresponding to multiple locks “Auxiliary number 55” used when the electronic lock 1 is used, “Lock unique number 156” which is a unique unique number of the electronic lock 1 itself, and use that enables unlocking and locking of two or more electronic locks It is composed of “lock unique number 257”, “lock unique number 358”, and “lock unique number n 59”, which are unique unique numbers of electronic locks that can be additionally used when a method is selected. Then, the key code generation processing unit 20b collectively encrypts the generated electronic key code 5 as a whole ("communication number 51" to "lock unique number n59"). A more detailed configuration and generation method of the electronic key code 5 will be described in detail when the operation is described later.

  The key code storage processing unit 20c (electronic key code storage processing means) stores the electronic key code 5 newly generated by the key code generation processing unit 20b in the electronic key 3 via the code communication unit 17. , It also has a function of storing in its own (electronic lock 1) storage unit 13 as well. Furthermore, the newly generated electronic key code 5 is transmitted to the management server 4 via the network communication unit 14 and is also stored in the management server 4. The storage processing method for the electronic key code 5 will be described in detail when the operation is described later.

  Next, the configuration of the electronic key 3 will be described with reference to FIGS. 4 and 5. As shown in FIG. 4, the electronic lock 3 includes a code communication unit 31 for exchanging information with the electronic lock 1, a control unit 32 having a function of exchanging information with the recording unit regarding rewriting of key information, and key information. A recording unit 33 for recording, a connection unit 34 capable of connecting an operation panel or a personal computer for performing maintenance, a power supply unit 35 for supplying electricity for starting up each unit, and the electronic lock 1 And a connection sensing unit 36 that senses the connection.

  Specifically, a predetermined program is incorporated in the control unit 32, thereby building a lock opening / closing operation processing unit 32a and a key code storage processing unit 32b as shown in FIG. Yes. The key opening / closing operation processing unit 32a (unlocking operation means) has a function of performing an opening / closing operation on the electronic lock 1. For example, at the time of unlocking / locking, the electronic key code 5 stored in the storage unit 33 is transmitted to the electronic lock 1 to request unlocking / locking. In particular, at the time of locking, the electronic key code 5 newly generated and transmitted by the electronic lock 1 in response to the locking request is received and transferred to the key code storage processing unit 32b. Then, the key code storage processing unit 32 b stores the new electronic key code 5 in the storage unit 33. The specific unlocking and locking processing of the electronic key 3 will be described in detail when the operation is described later.

  Next, the configuration of the management server 4 will be described with reference to FIG. The management server 4 includes an input unit 41 that can input predetermined data, a recording unit 42 that records information such as unique information such as the electronic lock 1 and the electronic key 3, key information, and group information, and an electronic lock. A communication unit 43 that communicates with 1, a connection unit 44 that can be connected to an operation panel, an external recording device, a personal computer, etc. for maintenance and maintenance, and an output for displaying managed information An output unit 45 for performing communication with each unit included in the management server 4, a control unit 46 for performing control for correct operation, a calculation unit 47 for performing decryption calculation, and an electric power for starting each unit And a power supply unit 48 for supplying power. The control unit 46 has a function of receiving the electronic key code 5 newly generated from the electronic lock 1 and storing it in the storage unit 33. Note that specific processing executed by the management server 4 will be described in detail when the operation is described later.

  Here, the network N connecting the electronic lock 1 and the management server 4 can use any communication network, but is configured by a communication network in which security measures are considered or a communication network using security devices. And desirable.

[Operation]
Next, the operation of the system configured as described above will be described with reference to FIGS. Here, FIG. 8 is a flowchart showing the operation of the electronic lock 1 at the time of unlocking. FIG. 9 is a sequence diagram illustrating the operation of the electronic lock 1 and the electronic key 3 during locking, and FIGS. 10 to 11 are flowcharts illustrating the operation of the electronic lock 1. FIG. 12 is a sequence diagram showing the operation of the electronic lock 1 and the management server 4 at the time of updating the electronic key data, and FIG. 13 is a flowchart showing the operation of the electronic lock 1.

  First, the operation at the time of unlocking will be described with reference to a flowchart showing the operation of the electronic lock 1 of FIG. First, the electronic lock 1 determines whether the contact of the electronic key 3 to the electronic lock 1 by the connection sensing unit 36 is the connection sensing unit (open) 18 or the connection sensing unit (closed) 19 (step S1). When the electronic lock 1 is sensed by the connection sensing unit (open) 18 (step S1: open), it is confirmed whether the lock state is recorded in the recording unit 13 of the electronic lock 1 (step S2). At this time, if the electronic lock 1 is in the locked state (step S2: locking), the electronic lock 1 uses the electronic key code 5 recorded in the recording unit 33 of the electronic key 3 for the electronic key 3. A request is sent from the code communication unit 31 to the electronic lock 1 (step S3). In response to this, when the electronic key code 5 is transmitted from the electronic key 3 (unlocking operation step), the electronic lock 1 receives the transmitted electronic key code 5 (step S3). When the connection sensing unit (closed) 19 is detected from the electronic key 3 in step S1 (step S1: closed), the process proceeds to a locking operation described later (step S8). If it is already unlocked at step S2 (step S2: unlocking), the unlocking lamp blinks (step S9), and an operation for notifying that it is unlocked is performed.

  Subsequently, the code communication unit 17 of the electronic lock 1 that has received the electronic key code 5 from the code communication unit 31 of the electronic key 3 passes the electronic key code 5 to the control unit 20 and is recorded in the recording unit 13 of the electronic lock 1. The electronic key code 5 is collated (step S4). When the electronic key code 5 transmitted from the electronic key 3 matches the electronic key code stored in itself (step S4: match), the electronic lock 1 is opened from the control unit 20 to the lock 11. The lock is instructed (step S6), and the lock 11 that has received it physically performs the unlocking operation (unlocking process step). Subsequently, the electronic lock 1 performs an operation of recording the unlocked state in the recording unit 13 (step S6), and performs an operation of turning on the unlocking lamp in the display unit 12 (step S7). On the other hand, if the electronic key code 5 is not matched as a result of the collation (step S4: mismatch), the electronic lock 1 performs an operation of blinking an abnormal lamp on the display unit 12 to notify that it is in an abnormal state ( Step S10).

  Here, collation of the electronic key code 5 by the electronic lock 1 is performed by first matching the electronic key code 5 received from the electronic key 3 with the electronic key code 5 stored in the electronic lock 1 itself. Collation is performed according to whether or not there is. Then, when the whole matches, the unlocking operation is performed as described above, but when the whole electronic key code 5 does not match, re-collation is performed. In this re-verification, it is verified whether a part of the information included in the electronic key code of the electronic lock 1 and the information included in the electronic key code transmitted from the electronic key 3 match. When some predetermined information matches, unlocking is performed. For example, the key information number (new) 53 (new key data) and the key information number (old) 54 (old key data) of each electronic key code match each other and are stored in the electronic lock 1 When the number is included in the electronic key data 5 transmitted from the electronic key 3, it is determined that the electronic key codes match, and unlocking is permitted. Moreover, you may re-collate by another condition. For example, it is assumed that the electronic key codes are matched by satisfying the following conditions (1) and (2). (1) the key unique number 52 of the electronic key code of the electronic lock 1, the key unique number 52 of the electronic key code of the electronic key 3, the key unique number included in the key information number (old) 54 of the electronic key 3, Match. (2) The lock unique number possessed by the electronic lock 1 has the same lock unique number recorded in the electronic key code of the electronic key 3 and is included in the key information number (old) 54 of the electronic key 3 Have the same lock identification number. By satisfying the above conditions, it may be determined that the electronic key codes match. Thus, by using the electronic key code 5 in which the lock unique numbers of the plurality of electronic locks 1 are stored, the single electronic key 3 can correspond to the plurality of electronic locks 1.

  Next, the operation at the time of locking will be described with reference to the sequence diagram of FIG. 9 and the flowchart showing the operation of the electronic lock 1 of FIGS. First, the electronic lock 1 determines whether the connection sensing unit 36 of the electronic key 3 contacts the electronic lock 1 (step S21 in FIG. 9), and determines whether the connection sensing unit (open) 18 or the connection sensing unit (closed) 19 is present ( Step S41 in FIG. When the electronic lock 1 is sensed by the connection sensing unit (open) 18 (step S41 in FIG. 10: open), the electronic lock 1 proceeds to the unlocking operation described above (step S45 in FIG. 10). On the other hand, when the electronic lock 1 is sensed by the connection sensing unit (closed) 19 (step S41 in FIG. 10: closed), it is confirmed whether the locked state is recorded in the recording unit 13 of the electronic lock 1 (FIG. 10). Step S42). At this time, in the unlocked state (step S42 in FIG. 10: unlocking), the electronic lock 1 uses the key information code 5 recorded in the recording unit 33 of the electronic key 3 for the electronic key 3. The electronic key 3 is requested to be transmitted from the code communication unit 31 of the electronic key 3 to the electronic lock 1 (step S22 in FIG. 9), and the electronic key code 5 transmitted from the electronic key 3 is received accordingly (FIG. 9). Step S23, step S43 of FIG. 10). If it is already locked in step S42 (step S42 in FIG. 10: locking), the locking lamp blinks (step S46 in FIG. 10), and an operation for notifying that it is unlocked is performed.

  Subsequently, the code communication unit 17 of the electronic lock 1 that has received the electronic key code 5 from the code communication unit 31 of the electronic key 3 passes the electronic key code 5 to the control unit 20 and records the electronic key recorded in the recording unit 13. Collation with code 5 is performed (step S44 in FIG. 10). Specifically, the received electronic key code 5 is first decrypted by the computing unit 21 using, for example, a 3DES encryption algorithm, and all the configuration data included in the electronic key code 5 is extracted. Even at this stage, the included key information number (new) (new key data) and key information number (old) (old key data) are in the encrypted state, so the decryption operation is executed again. To do. Similarly, the key information code 5 recorded in its own recording unit 13 is decrypted in the same manner, and each component data is taken out. Then, it is checked whether or not the electronic key code 5 received from the electronic key 3 matches the electronic key code 5 stored in itself (step S24 in FIG. 9). Even at the time of unlocking, the electronic key code 5 is decrypted and collated as described above.

  If the electronic key codes match (step S44 in FIG. 10: match), the process proceeds to a new electronic key code generation process to update the electronic key code 5 (proceed to code A in FIG. 10). Process). Hereinafter, a newly generated electronic key code is referred to as a new electronic key code. At this time, a flag indicating that a new electronic key code is generated and rewritten is set in the electronic key code stored in the recording unit 13. Note that the electronic key code in which the rewrite flag is set is an electronic key code used immediately before (in the past), and is hereinafter referred to as an old electronic key code.

  Here, if the result of the overall verification of the electronic key code in step S44 is a mismatch, rematching is performed (step S47 in FIG. 10). Specifically, as shown below, the following part of the information included in the electronic key code of the electronic lock 1 and the information included in the electronic key code transmitted from the electronic key 3 are individually verified. Then, it is assumed that the electronic key codes are matched by satisfying the matching conditions (1) and (2). (1) the key unique number 52 of the electronic key code of the electronic lock 1, the key unique number 52 of the electronic key code of the electronic key 3, the key unique number included in the key information number (old) 54 of the electronic key 3, Match. (2) The lock unique number possessed by the electronic lock 1 has the same lock unique number recorded in the electronic key code of the electronic key 3 and is included in the key information number (old) 54 of the electronic key 3 Have the same lock identification number. By satisfying the above conditions, it is determined that the electronic key codes match (step S47 in FIG. 10: match), and the process proceeds to a new electronic key code generation process (FIG. 11). Note that the conditions for re-collation of the electronic key code are not limited to the above conditions. For example, the key information number (new) 53 (new key data) and the key information number (old) 54 (old key data) of each electronic key code match each other and are stored in the electronic lock 1 When the number is included in the electronic key data 5 transmitted from the electronic key 3, it may be determined that the electronic key codes match.

  On the other hand, if the electronic key codes do not match (step S47 in FIG. 10: mismatch), the electronic lock 1 performs an operation of blinking an abnormal lamp on the display unit 12 to notify that it is in an abnormal state. (Step S48 in FIG. 10).

  Thereafter, the key information number (new) 53 (new key code) that has been decrypted for the first time in the electronic key code 5 in which the rewrite flag is set is the key information number in the newly generated electronic key code. Set to (old) 54 (old key code) and overwrite in the encrypted state. Further, a 2-digit random number is stored as a communication number 51 composed of 16 digits in accordance with the beginning of the 14-digit date / time information extracted from the date / time portion 16. Further, this “communication number 51”, “key unique number 52” of the connected electronic key 3, “lock unique number” recorded in the recording unit 13 of the electronic lock 1, and “key information number (old) 54”. Are combined, for example, encrypted using a 3DES encryption algorithm, and generated and stored as a new key information number (new) 53 (new key data). “Auxiliary number 55” is composed of a total of 8 digits, 4 digits for the number representing how many lock unique numbers are held and 4 digits for expansion. The Rukoto. For example, when a new corresponding electronic lock 1 is added, “auxiliary number 55” is rewritten, and the lock unique number of the electronic lock 1 is added to “lock unique number 56” in the electronic key code 5 or the like. Is done. Then, all items of the electronic key code 5 are encrypted to complete the electronic key information code 5 (step S25 in FIG. 9 and step S51 in FIG. 11). The key information number (old) 54 is a part of information of the electronic key code 5 used immediately before (for example, the key information number (new) 53), but is not limited to this and is used in the past. Some or all information of the electronic key code 5 may be used.

  Subsequently, the electronic lock 1 transmits the newly generated electronic key code 5 to the electronic key 3 (step S26 in FIG. 9, step S52 in FIG. 11, electronic key storage processing step). Then, the electronic key 3 records the received electronic key code 5 in the recording unit 33 (step S27 in FIG. 9). Further, the electronic key 3 returns the key information code 5 recorded in the recording unit 33 to the electronic lock 1 (step 28 in FIG. 9). When receiving the electronic key code 5 transmitted from the electronic key 3 (step S53 in FIG. 11), the electronic lock 1 moves the old electronic key code 5 in which the rewrite flag is set to the work area of the recording unit 13 and receives it. A new electronic key code 5 is recorded in the recording unit 13 (step S29 in FIG. 9 and step S54 in FIG. 11). Thereafter, the old electronic key code moved to the work area is deleted (step S30 in FIG. 9 and step S54 in FIG. 11).

  Subsequently, the electronic lock 1 gives a lock instruction to the lock 11 from the control unit 20 (step S55 in FIG. 11), and the lock 11 that has received the lock physically performs a locking operation. Subsequently, the electronic lock 1 performs an operation of recording the lock state in the recording unit 13 (step S56 in FIG. 11), and performs an operation of turning on the lock lamp in the display unit 12 (step S57 in FIG. 11). In this way, the newly generated new electronic key code is stored in both the electronic lock 1 and the electronic key 3 and is used for the subsequent unlocking process.

  Next, the communication operation from the electronic lock 1 to the management server 4 performed during or after locking will be described with reference to the sequence diagram of FIG. 12 and the flowchart showing the operation of the electronic lock 1 of FIG. First, every time the electronic key code recorded in the recording unit 13 is updated (step S61 in FIG. 12), the electronic lock 1 performs a communication operation to the management server 4 and communicates with the management server 4 via the network N. Application communication for obtaining communication permission is performed (step S62 in FIG. 12, step S71 in FIG. 13). At this time, the electronic lock 1 transmits the lock unique number of the electronic lock 1 together. Note that the communication is performed safely using the SHA-1 authentication algorithm, which is a one-way hash function, using, for example, a 3DES encryption algorithm and using IPsec technology.

  Subsequently, the management server 4 that has received the communication permission application communication confirms the lock unique number of the electronic lock 1 sent together (step S63 in FIG. 12). If the transmitted lock unique number matches the information stored in the management server 4, the management server 4 permits communication with the electronic lock 1 and transmits a communication permission signal to the electronic lock 1. (Step S64 in FIG. 12). In case of disagreement or otherwise, a disapproval is sent.

  Then, the electronic lock 1 in a state waiting for reception of a communication permission signal from the management server 4 (step S72 in FIG. 13) is not received if it cannot receive a signal regarding communication permission after waiting for a certain period of time. Judgment is made (step S72 in FIG. 13: not received) and the process proceeds to the re-permission application (step S77 in FIG. 13). Even when a signal relating to communication permission is received from the management server 4 (step S72 in FIG. 13: reception), even if it is a communication disapproval signal (step S73: disapproval in FIG. 13), the process proceeds to the re-permission application. (Step S77 in FIG. 13). And since the electronic lock 1 is also considered that the communication state of the network N is bad, it makes a communication permission application again with respect to the management server 4, and waits for the arrival of communication permission. After waiting for a certain period of time, if there is no communication permission notification, it is determined that the communication is not permitted, and even if a non-permission signal is received, it is determined that the communication is not permitted (step S77 in FIG. 13: not permitted / not received). Thereafter, the electronic lock 1 records communication disapproval / not received in the recording unit 13 (step S78 in FIG. 13), and ends the communication with the management server 4. On the other hand, after receiving the communication permission signal from the management server 4, the electronic lock 1 securely transmits the updated electronic key code 5 by the above-described encryption IPsec technology (step S65 in FIG. 12, FIG. 13). Step S74).

  Then, the management server 4 waiting for the arrival of the electronic key code 5 from the electronic lock 1 determines that it has not arrived if the electronic key code 5 has not arrived after waiting for a predetermined time. At this time, after determining that the electronic key code 5 has not arrived from the electronic lock 1, the management server 4 requests the electronic lock 1 to retransmit the electronic key code 5 and waits for arrival. However, if there is no arrival of the electronic key code 5 after waiting for a certain time, it is determined that the electronic key code 5 has not arrived, and the management server 4 records the absence of the electronic key code in the recording unit 42. On the other hand, when the management server 4 receives the electronic key code 5, it is stored in the recording unit 42 of the management server 4 (step S66 in FIG. 12). Thereafter, the management server 4 sends a key code storage completion notification indicating that the electronic key code 5 has been stored to the electronic lock 1 (step S67 in FIG. 12).

  The electronic lock 1 is waiting for a key code storage completion notification informing the management server 4 that the electronic key code 5 has been stored, but has not received the key information storage completion notification after waiting for a certain period of time. (Step S75 in FIG. 13: not received). At this time, the electronic lock 1 requests the management server 4 for a key code storage completion notification and waits for the key code storage completion notification. However, after waiting for a fixed time, if there is no key code storage completion notification, it is determined that the electronic lock 1 has not been received, and the electronic lock 1 records the key code storage completion notification not received in the recording unit 13 (step S79 in FIG. 13). On the other hand, when receiving the key code storage completion notification, the electronic lock 1 records that fact in the recording unit 13 (step S76 in FIG. 13).

  As described above, according to the above embodiment, the electronic key code is created by the electronic lock 1, rewritten to a new one at the time of locking, and stored in the electronic lock 1 and the electronic key 3, respectively. Therefore, the electronic key code is hardly duplicated, and the crime prevention effect can be improved. In particular, a part of information of the previous electronic key code 5 is recorded in the electronic key code 5, and two pieces of information of the previous key data (old key data) and new key data (new key data) are stored. Since it is a mechanism that cannot be unlocked if they do not match, it is more difficult to perform the unlocking operation by an unauthorized act, and the crime prevention effect can be further improved.

  Further, since the management server 4 and the electronic lock 1 hold the electronic key code, even if the electronic key 3 is lost, it is not necessary to renew the electronic lock 1, and only the electronic key 3 is created. It can be used continuously and the economy can be improved. Even if the lost electronic key 3 is picked up and used by another person, a new electronic key code 5 is generated and used after the new electronic key 3 is created. It is possible to suppress unlocking by others.

  In addition, unique information for a plurality of doors (electronic locks) is stored in an electronic key code, for example, set so that it can be unlocked by an electronic key code including unique information of an electronic lock that is to be unlocked at the time of verification Thus, it is possible to operate a plurality of electronic locks with one electronic key, and there is no need to prepare many keys as in the prior art.

  Here, in the above, the electronic key code 5 is stored in both the electronic lock 1 and the electronic key 3, and the method of performing the verification based on whether all or a part of both the electronic key codes 5 match is exemplified. The verification method is not necessarily limited to the above method. For example, the electronic key code 5 may be stored only on the electronic key 3 side, and the electronic lock 1 may determine whether or not locking / unlocking is possible based on the electronic key code 5 received from the electronic key 3. For example, determination criteria may be stored in advance on the electronic lock 1 side, and whether or not locking / unlocking is possible is determined according to whether or not the received electronic key code 5 satisfies the determination criteria.

  In the above description, the generation of a new electronic key code is illustrated as being performed at the time of locking. However, the generation timing of the electronic key code is not limited to being at the time of locking. Furthermore, although it has been described that the electronic key code is generated by the electronic lock 1, it may be generated on the electronic key 3 side, or may be generated by another computer connected to the electronic lock 1. . That is, the key code generation processing unit 20b and the key code storage processing unit 20c included in the electronic lock 1 described above may be included in other components other than the electronic lock 1.

  In the above description, the electronic key code newly generated by the electronic lock 1 is stored in the management server 4 via the network N. However, the electronic key code is not necessarily stored in another computer or storage device. There is no need to keep it. For example, as shown in FIG. 14, the electronic lock 1 may not be connected to the network.

  The electronic key 3 is not limited to the shape illustrated in FIG. The electronic key 3 only needs to match at least the tip of the cord communication part 16 and the connection sensing part 17 on the electronic lock 1 side, and the other parts can be freely shaped such as a wristwatch or a pen. Various shapes can be used. Moreover, since the electronic lock 1 has not specified the whole shape, it can be considered to have a shape that matches the shape of the electronic key, and both the electronic key and the electronic lock have a high degree of freedom in shape.

  The present invention can be applied to a place where a lock and a key are used, such as a house door (entrance etc.) and an office doorway. In particular, it is most suitable for doorway doors in buildings where security is a concern.

It is a block diagram which shows the whole structure of an electronic lock opening / closing system. It is a block diagram which shows the structure of an electronic lock. It is a functional block diagram which shows the structure of the control part of an electronic lock. It is a block diagram which shows the structure of an electronic key. It is a functional block diagram which shows the structure of the control part of an electronic key. It is a functional block diagram which shows the structure of a management server. It is a figure which shows the structure of electronic key data. It is a flowchart which shows operation | movement of the electronic lock at the time of unlocking. It is a sequence diagram which shows operation | movement of the system at the time of locking. It is a flowchart which shows operation | movement of the electronic lock at the time of locking. It is a flowchart which shows operation | movement of the electronic lock at the time of locking. It is a sequence diagram which shows operation | movement of the system at the time of key code update. It is a flowchart which shows operation | movement of the electronic lock at the time of key code update. It is a block diagram which shows the modification of the whole structure of an electronic lock opening / closing system.

Explanation of symbols

1 Electronic lock 3 Electronic key 4 Management server 5 Electronic key code

Claims (10)

An electronic key having an unlocking operation means for storing the electronic key code and transmitting the electronic key code to the electronic lock during the unlocking operation, and an unlocking process for unlocking based on the electronic key code received from the electronic key An electronic lock opening and closing system comprising means,
Electronic key code generation means for newly generating an electronic key code including old key data which is at least part of information of an electronic key code used in the past and new key data which is newly generated information;
Electronic key code storage processing means for storing at least the electronic key code newly generated by the electronic key code generation means in the electronic key;
Bei to give a,
The electronic key code generation means sets the new key data included in the electronic key code used at the time of the previous unlocking to the old key data of the electronic key code to be newly generated, and newly Generating the new key data of the electronic key code to be generated, including a random number;
An electronic lock opening and closing system characterized by that. The electronic key code storage processing means also stores the electronic key code newly generated by the electronic key code generation means in the electronic lock,
The unlocking processing means provided in the electronic lock performs unlocking by comparing the electronic key code received from the electronic key with the electronic key code stored in itself.
The electronic lock opening and closing system according to claim 1. The electronic key code generation means and the electronic key code storage processing means are provided in the electronic lock and operate when the electronic lock is locked.
The electronic lock opening and closing system according to claim 2. The electronic key code generation means provided in the electronic lock receives the electronic key code from the electronic key at the time of locking, and collates the received electronic key code with the electronic key code stored in the electronic lock. , Generate a new electronic key code according to the verification result,
The electronic lock opening and closing system according to claim 3. The electronic key code generation means includes the electronic key code newly generated by encrypting the old key data and the new key data, respectively.
The electronic lock opening and closing system according to claim 1, 2, 3 or 4 . The electronic key code generation means newly generates an electronic key code including lock specifying information unique to the electronic lock to be unlocked,
The unlocking processing means of the electronic lock unlocks the electronic key code received from the electronic key when its own lock identification information is included,
The electronic lock opening and closing system according to claim 1, 2, 3, 4 or 5 . A management server connected to the electronic lock via a network;
The electronic key code storage processing means provided in the electronic lock transmits the newly generated electronic key code to the management server,
The management server stores an electronic key code received from the electronic lock;
The electronic lock opening and closing system according to claim 1, 2, 3, 4, 5 or 6 . An electronic lock having an unlocking processing means for storing an electronic key code and unlocking the electronic key code based on the electronic key code received from the electronic key transmitted to the electronic lock during the unlocking operation,
Electronic key code generation means for newly generating an electronic key code including old key data which is at least part of information of an electronic key code used in the past and new key data which is newly generated information;
Electronic key code storage processing means for storing at least the electronic key code newly generated by the electronic key code generation means in the electronic key;
With
The electronic key code generation means sets the new key data included in the electronic key code used at the time of the previous unlocking to the old key data of the electronic key code to be newly generated, and newly Generating the new key data of the electronic key code to be generated, including a random number;
An electronic lock characterized by that. An electronic lock having an unlocking processing means for storing an electronic key code and unlocking the electronic key code based on the electronic key code received from the electronic key transmitted to the electronic lock during the unlocking operation,
Electronic key code generation means for newly generating an electronic key code including old key data which is at least part of information of an electronic key code used in the past and new key data which is newly generated information;
Electronic key code storage processing means for storing at least the electronic key code newly generated by the electronic key code generation means in the electronic key;
Together to realize,
The electronic key code generation means sets the new key data included in the electronic key code used at the time of the previous unlocking to the old key data of the electronic key code to be newly generated, and newly Generating the new key data of the electronic key code to be generated, including a random number;
A program to make things happen . An unlocking operation step in which the electronic key storing the electronic key code transmits the electronic key code to the electronic lock during the unlocking operation, and the unlocking is performed based on the electronic key code received from the electronic key by the electronic lock. An electronic lock opening and closing method comprising:
Before the unlocking operation step, the electronic lock includes old key data that is at least part of information of an electronic key code used in the past and new key data that is newly generated information. An electronic key code generation step for newly generating a code, and an electronic key code storage processing step in which the electronic lock stores the newly generated electronic key code in at least the electronic key;
I have a,
The electronic key code generation step sets the new key data included in the electronic key code used at the time of the previous unlocking to the old key data of the electronic key code to be newly generated, and newly Generating the new key data of the electronic key code to be generated, including a random number;
An electronic lock opening and closing method characterized by the above.

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