JP2001298450A - Authentication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an authentication system that can enhance security. SOLUTION: The authentication system 100 is provided with an image pickup device 10, that picks up the image of a user 50 of a mobile recording medium 40 to generate image data S10, a timing-generating circuit 29 that intermittently generates a timing signal S29, an extract circuit 21 that extracts data at a characteristic point or a singular point of the user 50 from the image data S10, and an authentication circuit 22 that compares data S21 extracted by the extract circuit 21 with data S30 at the characteristic point or the singular point of the user 50 recorded in advance, in the portable recording medium 40 and conducts authentication, on the basis of the comparison result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an authentication system for authenticating a user of a portable recording medium such as an IC card.

[0002]

2. Description of the Related Art Various authentication systems using human unique information such as a face, fingerprint, iris and retinal pattern have been developed.

[0003]

In the conventional authentication system, the number of times of authentication is generally one. In a workplace where high security or confidentiality is required, it may be possible to allow only specially qualified professionals or professionals in certain positions to operate the computer in the workplace. .

[0004] However, if the number of times of authentication is one, there is a possibility that when the expert or professional staff leaves the console of the computer, the input device may be operated by others, and security and confidentiality may not be ensured. There is a problem in point. An object of the present invention is to provide an authentication system capable of improving security.

[0005]

According to the present invention, there is provided an authentication system comprising: an imaging device for imaging a user of a portable recording medium to generate image data; and a timing generator for generating a timing signal intermittently or intermittently. A circuit, an extraction circuit for extracting data of the feature points or singularities of the user from the image data in accordance with the timing signal, and the data extracted by the extraction circuit, pre-recorded on the portable recording medium. An authentication circuit for comparing the data of the characteristic point or the singular point of the user and performing authentication based on the comparison result.

In the authentication system according to the present invention, preferably, the timing generation circuit generates the timing signal at random time intervals or at fixed time intervals.
In the authentication system according to the present invention, for example, the timing generation circuit may include a random number generation circuit, and may generate the timing signal at random time intervals based on an output signal of the random number generation circuit.

[0007] The authentication system according to the present invention further comprises, for example, a reading device for reading the data recorded in advance on the portable recording medium and supplying the data to the authentication circuit, wherein the portable recording medium is an IC card. Some configuration may be used.

[0008] The extraction circuit extracts the data of the characteristic point or the singular point of the user from the image data according to the timing signal generated intermittently or intermittently. The authentication circuit is
Since the extraction data of the extraction circuit is compared with the data of the user's feature points or singularities pre-recorded on a portable recording medium, and the authentication is performed based on the comparison result, the number of times of authentication can be set to a plurality of times. It is possible to improve security as compared with the case where the number of times of authentication is one.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram showing an embodiment of a computer system having an authentication system according to the present invention. This computer system 120
Are the imaging device 10, the computer 20, and the reading device 3.
0 and a portable recording medium 40. The computer system 120 includes an authentication system 100. The authentication system 100 includes an imaging device 10, an extraction circuit 21, a timing generation circuit 29, an authentication circuit 22, and a reading device 3.
0.

The computer 20 has an extraction circuit 21, an authentication circuit 22, an input device 23, a display device 24, a control circuit 25, a timing generation circuit 29, an access circuit 27, and a memory 28.

The image pickup device 10 is, for example, a CCD (Charge).
The portable device 50 has a coupled device, and captures an image of a user 50 of the portable recording medium 40 and supplies image data S10 to the computer 20. The imaging device 10 is, for example, a user 5
Image 0 face or iris.

The timing generation circuit 29 generates a timing signal S29 intermittently or intermittently, and supplies the generated timing signal S29 to the extraction circuit 21, the authentication circuit 22, and the control circuit 25. This timing generation circuit 2
9 generates the timing signal S29 at predetermined time intervals. The timing generation circuit 29 may include, for example, a random number generation circuit, and may generate the timing signal S29 at random time intervals based on an output signal of the random number generation circuit.

The extraction circuit 21 extracts the data of the characteristic point or the singular point of the user 50 from the image data S10 according to the timing signal S29, and supplies the extracted data (extracted data) S21 to the authentication circuit 22.

The portable recording medium 40 is composed of, for example, an IC card, and data of the characteristic points or singular points of the user 50 is recorded in advance. The recording data S30 of the portable recording medium 40 may be encrypted data, and the authentication circuit 22 may decrypt the encrypted data and use the decrypted data for comparison.

The reading device 30 is constituted by, for example, a card reader / writer, reads recording data recorded in advance on the portable recording medium 40, and supplies the read recording data S 30 to the authentication circuit 22. Note that the reading device 30 may be provided in the computer 20.

The authentication circuit 22 compares the extracted data S21 from the extraction circuit 21 with the recorded data S30 from the reading device 30, and if the comparison result indicates a match, the user 5
An authentication signal SOK indicating that 0 has been authenticated is generated, and when the comparison result indicates a mismatch, a non-authentication signal SNG indicating that the user 50 is not authenticated is generated. Further, the imaging device 10 cannot image the user 50, and the
When 0 is not imaged, a non-authentication signal SNG is generated. As the operation for authentication of the authentication circuit 22, it may be determined whether or not the singular points match, or whether or not the number of colors matches.

The input device 23 is composed of, for example, a keyboard, a mouse and the like, and supplies input data S23 inputted by the user 50 to the control circuit 25. Display device 2
4 is display-controlled by the control circuit 25 and displays various data such as the input data S23 and the output data S25 of the control circuit 25.

The access circuit 27 accesses the memory 28 to read various data S27, and reads the read data S27.
27 is supplied to the control circuit 25, and the write data S28 from the control circuit 25 is written into the memory 28.

The control circuit 25 is a controller that controls the entire computer 20 and is constituted by, for example, a microprocessor. The control circuit 25 includes the authentication circuit 22
When the authentication signal SOK is supplied from the user, the operation of the input device 23 by the user 50 is permitted, and when the non-authentication signal SNG is supplied from the authentication circuit 22, the operation of the input device 23 by the user 50 is prohibited. I do. When the input operation is prohibited, the display device 24 displays on the display screen that the input operation is prohibited. Further, the control circuit 25 includes the input device 2
The predetermined input data S23 from No. 3 is written into the write data S28.
To the access circuit 27 as read data S27
Is supplied to the display device 24 as output data S25.

The timing generation circuit 29 generates a timing signal S29 at predetermined time intervals. The predetermined time interval may be a fixed time interval or a random time interval. By setting random time intervals, users 5
For 0 and / or other people, it can be difficult to predict the authentication time interval, and in this regard, security can be further improved.

Since the extraction circuit 21 extracts the data S21 of the characteristic point or the singular point according to the timing signal S29, the load of the calculation for the extraction is smaller than in the case where the data S21 of the characteristic point or the singular point is constantly extracted. It can be reduced.

In the authentication system 100, a sensor such as an infrared sensor and a weight sensor may be further used, and data on the temperature detected by the infrared sensor, data on the weight of the user 50, and the like may be recorded in the recording medium 40 in advance. . As the weight sensor, for example, a weight sensor may be attached to a chair of a console of the computer 20, and an infrared sensor may be provided together with the imaging device 10. As described above, by performing authentication by the authentication circuit 22 using data other than the image data from the imaging device 10 together, the security of the authentication system 100 can be further improved.

The above embodiment is an exemplification of the present invention, and the present invention is not limited to the above embodiment. The authentication system according to the present invention is applicable to various systems that require security and / or confidentiality.

[0025]

As described above, according to the present invention, it is possible to provide an authentication system capable of improving security.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of an authentication system according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Imaging device, 20 ... Computer, 21 ... Extraction circuit, 22 ... Authentication circuit, 23 ... Input device, 24 ... Display device, 25 ... Control circuit, 27 ... Access circuit, 28 ... Memory, 29 ... Timing generation circuit, 30 ... Reading device, 40
... portable recording medium, 50 ... user, 100 ... authentication system, 120 ... computer system, S10 ... image data, S23 ... input data, S29 ... timing signal, S
NG: non-authentication signal, SOK: authentication signal.

Claims (4)

[Claims] An image capturing apparatus for capturing an image of a user of a portable recording medium to generate image data; a timing generating circuit for generating a timing signal intermittently or intermittently; An extraction circuit for extracting data of the user's feature point or singularity from data; data extracted by the extraction circuit; and a user's feature point or singularity pre-recorded on the portable recording medium. An authentication system comprising: an authentication circuit that compares data with data and performs authentication based on the comparison result. 2. The authentication system according to claim 1, wherein said timing generation circuit generates said timing signal at random time intervals or at fixed time intervals. 3. The timing generation circuit includes a random number generation circuit, and generates the timing signal at random time intervals based on an output signal of the random number generation circuit.
Authentication system described. 4. The portable recording medium according to claim 1, further comprising a reading device for reading the data recorded in advance on the portable recording medium and supplying the data to the authentication circuit, wherein the portable recording medium is an IC card. The authentication system according to any one of the above.