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Message authentication

  • US 20010002929A1
  • Filed: 12/01/2000
  • Published: 06/07/2001
  • Est. Priority Date: 12/02/1999
  • Status: Active Grant
First Claim
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1. Method for the authentication of data communicated from a originator to a destination, wherein a keyed hashing technique is used, according to which data to be authenticated is concatenated with a private key and then processed with a cryptographic hash function, and the data are transmitted together with the digest of the hash function from the originator to the destination, characterized in that the data comprises temporal validity information representing the temporal validity of the data.

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