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MESSAGE AUTHENTICATION

  • US 20070162757A1
  • Filed: 03/08/2007
  • Published: 07/12/2007
  • Est. Priority Date: 12/02/1999
  • Status: Active Grant
First Claim
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1. A method for the authentication of data communicated from an originator to a destination, comprising:

  • using a keyed hashing technique according to which data to be authenticated is concatenated with a private key and then processed with a cryptographic hash function;

    transmitting the data together with a digest of the hash function from the originator to the destination, wherein the data comprises temporal validity information representing the temporal validity of the data.

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