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Offline-online incentive points system and method

  • US 20040193489A1
  • Filed: 12/31/2003
  • Published: 09/30/2004
  • Est. Priority Date: 08/14/2000
  • Status: Active Grant
First Claim
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1. A method of generating an encrypted code in base L, comprising steps providing an n-bit raw number;

  • applying a one-way hash function on the n-bit raw number with a first secret key to generate a first strung;

    designating an m-bit portion of the first string as an m-bit validation number; and

    combining the m-bit validation number and the n-bit raw number to generate a second string.

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