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Method and apparatus for strengthening passwords for protection of computer systems

  • US 6,079,021 A
  • Filed: 06/02/1997
  • Issued: 06/20/2000
  • Est. Priority Date: 06/02/1997
  • Status: Expired due to Term
First Claim
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1. A computer implemented method for accessing a resource, comprising the steps of:

  • combining a first password with a supplement to generate a full password, wherein the bit length of the supplement is a fixed number of bits and the full password has a larger bit length than the first password;

    applying a one-way hash function to the full password to generate an access code stored in a memory of a computer system;

    combining a second password with possible supplements to generate trial full passwords, each possible supplement having the fixed number of bits and the trial full passwords each having a larger bit length than the second password;

    applying the one-way hash function to the trial full passwords to generate trial access codes; and

    allowing access to the resource if one of the trial access codes is identical to the stored access code.

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