METHOD, DEVICE AND SYSTEM FOR AUTHENTICATION

PROBLEM TO BE SOLVED: To provide technical means for performing authentication of high confidentiality, by making it difficult to acquire a key for authenticating a device to be authenticated, without performing the calculation based on a cryptographic algorithm.SOLUTION: Specific key data is associ...

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Bibliographic Details
Main Authors YAO JUNSHIRO, KIKUTA YUJI
Format Patent
LanguageEnglish
Japanese
Published 05.01.2015
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Summary:PROBLEM TO BE SOLVED: To provide technical means for performing authentication of high confidentiality, by making it difficult to acquire a key for authenticating a device to be authenticated, without performing the calculation based on a cryptographic algorithm.SOLUTION: Specific key data is associated with a voltage value, and this voltage value is stored in a controller 20. When being authenticated, the controller 20 generates voltage control data that is used in the control for generating the voltage value thus stored, and transmits the voltage control data to a security device 10. The security device 10 generates a voltage in accordance with a voltage control signal thus received, determines specific key data associated with that voltage value, and then authenticates the controller 20 by comparing this specific key data with prestored specific key data. 【課題】 暗号アルゴリズムに基づいた演算を行うことなく、被認証装置を認証するための鍵が取得されるのを困難にし、秘匿性の高い認証を行う技術的手段を提供する。【解決手段】 固有鍵データに対して電圧値を対応付け、この電圧値を制御装置20に記憶させる。制御装置20は、認証を受けるとき、記憶した電圧値を生成するための制御に使用する電圧制御データを生成し、セキュリティ装置10に送信する。セキュリティ装置10は、受信した電圧制御信号に従って電圧を生成し、その電圧値に対応付けられた固有鍵データを求め、この固有鍵データを予め記憶した固有鍵データと比較して制御装置20を認証する。【選択図】図1
Bibliography:Application Number: JP20130124692