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System and method of code generation and authentication

  • US 7,823,768 B2
  • Filed: 01/04/2007
  • Issued: 11/02/2010
  • Est. Priority Date: 02/02/2006
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a request for a batch of codes, each code being unique for a separate unit item; and

    generating the batch of codes, using a processor, each code being unique for a separate unit item, wherein the generation of each code of the batch comprisesgenerating a unique item number for the code being generated,generating a first string by appending a batch number and a check value to the unique item number,generating a second string including a key ID, the key ID being associated with an encryption key,generating an obscured string by obscuring the second string,generating an encrypted string by encrypting the first string using the encryption key, andgenerating the code by appending the obscured string to the encrypted string.

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