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Unique digital signature

  • US 6,085,321 A
  • Filed: 08/14/1998
  • Issued: 07/04/2000
  • Est. Priority Date: 08/14/1998
  • Status: Expired due to Term
First Claim
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1. A method for generating a unique digital signature comprising:

  • receiving a request for said unique digital signature;

    incrementing an index number corresponding to a system key;

    executing a one-way hash function, using said index number and said system key as inputs, said one-way hash function producing a hash value in a first digital format;

    transforming said hash value in said first digital format into a second digital format, and using said transformed hash value in said second digital format as an adapted digital signature;

    concatenating said adapted digital signature and said service id to form said unique digital signature; and

    returning said unique digital signature.

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