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Key storage device, biometric authentication device, biometric authentication system, key management method, biometric authentication method, and program

  • US 20110016317A1
  • Filed: 06/21/2010
  • Published: 01/20/2011
  • Est. Priority Date: 07/15/2009
  • Status: Abandoned Application
First Claim
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1. A key storage device comprising:

  • a receiving unit for receiving package data that includes a template encryption key for decrypting an encrypted template for biometric authentication and an authentication key that is used for mutual authentication performed with a terminal that uses the template encryption key, the mutual authentication being performed at a time of placing the template encryption key in a usable state and the package data being in a data format that allows restoration only by the key storage device in which the template encryption key is stored;

    a key information storage unit for restoring the template encryption key and the authentication key from the package data received by the receiving unit, and for storing the template encryption key and the authentication key in a tamper resistant non-volatile memory;

    a mutual authentication unit for performing, in case a request for use of the template encryption key is received from the terminal, mutual authentication with the terminal by using authentication information that is based on the authentication key stored in the non-volatile memory; and

    a key state management unit for placing, in case the mutual authentication by the mutual authentication unit succeeds, the template encryption key stored in the non-volatile memory in a state usable by the terminal.

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