Authentication system

An authentication system and object technology, applied in the field of authentication systems, can solve the problem that the authentication execution device cannot obtain distance information, etc.
CN101089897AInactive Publication Date: 2007-12-19HITACHI LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHI LTD
Publication Date
2007-12-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

To provide compact, low power consumption authenticating devices and authentication target device, and capable of simultaneous communication for acquiring an identifier, and acquiring distance information. Provided is an authentication system comprising an authenticating device and an authentication target device which communicates by using ultra wide band impulse signals, wherein the authentication system measures the distance between the authenticating device and the authentication target device by using ultra wide band impulse signal to exchange identification information of the authenticating device and identification information of the authentication target device between each device, wherein the authenticating device authenticates the authentication target device based on a combination of the measured distance between the authenticating device and the authentication target device, and the exchanged identification information of the authentication target device, and wherein the authenticating device generate control signal to control a control target based on the authentication results.
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Description

technical field

[0001] The present invention relates to an authentication system, and more particularly to an authentication system using distance information for authentication conditions. Background technique

[0002] In a wireless network system such as a sensor network system, when a repeater or a base station is used as a reader (authentication execution device), if the distance where wireless communication can be performed is long (for example, 30m), the presence All tags within the communicable range are authenticated. For example, in the case of managing entry and exit, the door can be unlocked even at a distance of 30 m from the door, which is not very good in terms of safety.

[0003] In order to improve security, a method of limiting the communication distance to a short distance at the time of authentication has been proposed (for example, refer to Patent Document 1 and Patent Document 2).

[0004] On the other hand, since there are various authentication targe...

Claims

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