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Method of deriving a per-message signature for a DSS or El Gamal encryption system

  • US 5,475,763 A
  • Filed: 02/28/1994
  • Issued: 12/12/1995
  • Est. Priority Date: 07/01/1993
  • Status: Expired due to Term
First Claim
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1. A message authentication system of the type in which a signature of an originator of a message MSG, hereinafter the message originator, is transmitted to a recipient of the message and verified by the recipient, the message originator having a secret number SL and a corresponding public number PL, said system comprising:

  • means for receiving the MSG;

    means for generating a secret message for each message, a per-message secret number, SM by applying a one-way hash function to a combination of MSG and a generated secret number of the message originator,means for generating a signature as a function of SL, SM and MSG.

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