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Digital measurement apparatus and image measurement apparatus

  • US 6,889,324 B1
  • Filed: 11/16/1999
  • Issued: 05/03/2005
  • Est. Priority Date: 11/17/1998
  • Status: Expired due to Term
First Claim
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1. A digital measurement apparatus, which measures a physical measurement object to produce measured data, provides a public-key cryptography digital signature for the measured data, and manages the measured data, said apparatus comprising:

  • key generating means for generating at least a pair of a public key and a private key using a key generating algorithm; and

    signature providing means for providing the public-key cryptography digital signature using said public key and said private key.

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