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Portable security transaction protocol

  • US 20050091492A1
  • Filed: 07/01/2004
  • Published: 04/28/2005
  • Est. Priority Date: 10/27/2003
  • Status: Active Grant
First Claim
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1. A method for providing message authenticity, comprising the steps of:

  • accepting transaction information;

    accepting a first data item used for authenticating an originating user;

    cryptographically processing the transaction information using only a second data item, wherein the entropy of the first data item is less than the entropy of the second data item; and

    authenticating the originating user using the first data item.

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