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Computer access via a single-use password

  • US 6,370,649 B1
  • Filed: 03/02/1998
  • Issued: 04/09/2002
  • Est. Priority Date: 03/02/1998
  • Status: Expired due to Fees
First Claim
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1. A method for allowing a user access to a password protected computer system through the use of a fail-safe password, the fail-safe password comprising an external hash value encrypted with an external private key, the method comprising the steps of:

  • securely generating an internal hash value within the computer system, wherein the internal hash value is based on a changeable seed value distinct from a previous fail-safe password;

    providing the fail-safe password to the computer system;

    decrypting the fail-safe password using a public key corresponding to the private key to provide the external hash value;

    comparing the internal hash value to the external hash value;

    changing the seed value to a next seed value when the internal hash value equals the external hash value; and

    permitting the user to access the computer system when the internal hash value equals the external hash value.

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