JP6215700B2 - IC card unlocking system - Google Patents

Description

  The present invention relates to an unlocking system using a non-contact IC card.

There is an unlocking system that uses a non-contact IC card as key data and can be used by unlocking an electronic device such as a cabinet or a personal computer. In such a system using a non-contact IC card, a configuration in which an IC card used for other purposes is also used for an unlocking operation of an electronic lock can be easily realized without requiring a dedicated card, so that the system is becoming popular. .
For example, in Patent Document 1, IDm, which is identification data unique to manufacturing stored in an IC card, is used as key data, and an unlocking operation can be performed if it matches the registered data.

JP 2004-54305 A

  However, since the IDm of the IC card cannot be rewritten and is easy to use, it can be easily read, so it can be impersonated by copying, and there has been a security concern. For this reason, a configuration using information other than IDm stored in the IC card is conceivable. However, since the data length of other data is not determined like IDm, a large system change is required and it can be easily opened. It was not available as lock data.

  Therefore, in view of such problems, the present invention provides an IC card unlocking system that uses information other than identification data unique to manufacturing of a non-contact IC card as unlocking data without major system changes. It is an object.

In order to solve the above-mentioned problems, the invention of claim 1 is an IC card unlocking system for performing unlocking control of an electronic lock using data stored in a memory of a non-contact IC card as key data. An IC card reader that reads data stored in the memory from the trapped non-contact IC card, and an unlocking control unit that generates key data from the read data and performs authentication control, and the key data Is a fixed length including at least data of a specific part of the user area among identification data unique to the card stored in the system area of the memory as non-rewritable and data stored in a rewritable user area of the memory The unlocking control unit arranges the data of the specific part read from the IC card in a predetermined order to generate key data. Generated, if the key data matches the data registered in advance, characterized by unlocking the electronic lock.
According to this configuration, in order to create key data by arranging at least user area data in a predetermined order among data stored in the IC card, one registered data is used as key data. It is difficult to decipher compared to, and is effective in improving security. In addition, since the key data is composed of data of a certain length, the system has versatility regardless of the length of data stored in the IC card, and it is easy to construct a system.

According to a second aspect of the present invention, in the configuration according to the first aspect, the key data is formed by combining data of specific parts of a plurality of types of data stored in the memory. .
According to this configuration, since the key data is configured by combining partial data read from a plurality of types of data stored in the memory, the data read from the IC card is harder to decipher than key data without sorting. It is effective for improving security.

According to a third aspect of the present invention, in the configuration according to the first or second aspect, the key data has a data length that is the same as a data length of identification data unique to manufacturing stored in the system area. .
According to this configuration, since the data length of the key data is the same as the length of identification data unique to manufacturing, it is possible to use a conventional IC card unlocking system that uses manufacturing-specific data as key data. Yes, it is possible to construct a new unlocking system without significant system changes.

  According to the present invention, in order to create key data by arranging at least user area data among data stored in an IC card in a predetermined order, one registered data is used as key data. It is difficult to decipher compared to, and is effective in improving security. In addition, since the key data is composed of data of a certain length, the system has versatility regardless of the length of data stored in the IC card, and it is easy to construct a system.

It is a block diagram which shows an example of the IC card unlocking system which concerns on this invention. It is a flowchart which shows the flow of unlocking. It is explanatory drawing of the data area of IC card which shows the site | part to read. It is another explanatory view of a data area of an IC card showing a part to be read.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing an example of an IC card unlocking system according to the present invention, where 1 is an electronic lock and 2 is an IC card for reading information of a non-contact IC card (hereinafter simply referred to as “IC card”). Reader, 3 is an operation unit for inputting key data and the like, 4 is a storage unit for storing key data and the like, 5 is a display unit including an LED and a buzzer for notifying a collation result, and 6 is for controlling the entire system. An unlocking control unit.

  The operation of the IC card unlocking system configured as described above is as follows. This will be described with reference to the flowchart of FIG. When an IC card (not shown) is trapped in the IC card reader 2, the unlock control unit 6 detects it (Yes in S1) and reads data such as ID information stored in the memory of the IC card. (S2). The read data is processed as follows under the control of the unlocking control unit 6.

When reading the data stored in the memory of the IC card, the unlocking control unit 6 takes out data of a specific part set in advance (hereinafter referred to as “partial data”) from the data (S3). ). Specifically, the memory of the IC card has a system area and a user area. Here, data of a specific part of the user area is extracted according to a preset rule. At this time, if the data is encrypted (Yes in S4), it is decrypted (S5).
The extracted partial data is rearranged in the order set for each original data, and key data having a designated number of digits is formed (S6).

FIG. 3 is an explanatory diagram of a data area indicating a part to be read by the IC card, and illustrates an explanatory diagram in which key data is created. M is a data area (memory) of the IC card, D1 is a system area for storing system data, D2 is a user area for storing user data, and dt is an image diagram for creating key data K from the read data.
Here, a case of FeliCa (registered trademark) is shown as an example of a non-contact IC card, and IDm, which is identification data unique to manufacturing, is shown in the system area D1 in the data area M of the IC card as shown in FIG. Stored and SSFC (registered trademark (Shared Security Formats Cooperation)) data is stored in the user area D2.
Further, dt1 to dt5 (first data to fifth data) indicate data in the user area D2 read by the IC card reader 2, that is, data written in the user area D2.

  IDm is manufacturing-related identification data consisting of 8-byte numbers, and SSFC is user setting data that can be changed or deleted. The data format is set as SSFC specifications, and writing is performed according to the purpose of the service. .

  The unlocking control unit 6 creates 8-digit key data K equal to the IDm data length based on the data from the first data dt1 to the fifth data dt5 read from the user area D2. Specifically, the first two-digit data of the first data dt1, the first one-digit data of the second data dt2, the third and fifth one-digit data of the third data dt3, and the first one of the fourth data dt4 Two-digit data consisting of the third and fourth digits of the digit data and the fifth data dt5 are extracted and used (both are portions surrounded by a broken line shown in FIG. 3).

  The individual data are arranged in a preset order. Here, the second data of the first data dt1, the fifth data of the third data dt3, the first data of the second data dt2, the third and fourth data of the fifth data dt5, and the third data of the third data dt3 The key data K1 is created by arranging the data and the first data of the fourth data dt4 in this order.

  The data “AB5a and 3a” in which the partial data thus read are arranged in a predetermined order becomes the key data K. This key data K is collated with the data registered in the storage unit 4 (S7). Yes) The electronic lock 1 is unlocked (S9). If they do not match, unlocking is not performed and the control is terminated. When unlocked, the unlocking on the display unit 5 is displayed by light emission of the LED (S10).

As described above, in order to create key data K by arranging at least user area data among data stored in the IC card in a predetermined order, the registered data is used as key data. Compared to this, it is difficult to decipher and is effective in improving security. In addition, since the key data K is composed of data of a certain length, it has general versatility regardless of the length of data stored in the IC card, and it is easy to construct a system.
Further, since the key data K is configured by combining partial data read from a plurality of types of data dt1 to dt5 stored in the memory of the IC card, the data read from the IC card is decrypted rather than rearranged as key data. It is difficult to improve security.
Furthermore, since the data length of the key data K is the same as the data length of IDm, it is possible to use a conventional IC card unlocking system using IDm as the key data K, without making a major system change. It is possible to construct a new unlocking system.

FIG. 4 shows another explanatory diagram of the data area of the IC card, and shows another example of data stored in the user area D2. If the data of the user area D2 stored in the IC card is a series of long data as shown in FIG. 4, the data of a specific part is extracted from this data to create key data with a predetermined number of digits. It ’s fine. Here, as an example, the second, third, seventh to ninth, fourteenth, twentieth, and twenty-fifth data are extracted and rearranged in a predetermined order to create key data K. .
As described above, the key data K can be created without depending on the number of data and the data length stored in the IC card, and the IC card to be used can have versatility.

  Although the above embodiment shows a configuration in which the key data K is created using only the data in the user area D2, the key data K may be created using part of the data in the system area D1. good. Further, although FeliCa has been described as an example, the key data K created as described above can be applied to non-contact IC cards of other standards.

  1 .... Electronic lock 2 .... IC card reader 3 .... Operation unit 4 .... Storage unit 5 .... Display unit 6 .... Unlock control unit D1 ... System area D2 ... User area , K ... Unlock data, M ... Non-contact IC card memory.

Claims (3)

An IC card unlocking system that performs unlocking control of an electronic lock using data stored in a memory of a non-contact IC card as key data,
An IC card reader that reads data stored in the memory from the trapped non-contact IC card, and an unlocking control unit that generates key data from the read data and performs authentication control,
The key data includes at least data of a specific part of the user area among identification data unique to the card stored in the system area of the memory as non-rewritable and data stored in a rewritable user area of the memory. Consists of a certain length of data including
The unlocking control unit generates key data by arranging the data of the specific part read from the IC card in a predetermined order. When the key data matches the pre-registered data, the unlocking control unit IC card unlocking system characterized by unlocking. 2. The IC card unlocking system according to claim 1, wherein the key data is formed by combining data of specific parts of a plurality of types of data stored in the memory. 3. The IC card unlocking system according to claim 1, wherein the key data has a data length that is the same as a data length of identification data unique to manufacturing stored in the system area.

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