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Method for the determination of soundness of a sheet-shaped medium, and method for the verification of data of a sheet-shaped medium

  • US 7,159,241 B1
  • Filed: 09/21/2000
  • Issued: 01/02/2007
  • Est. Priority Date: 06/15/2000
  • Status: Expired due to Fees
First Claim
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1. A method for certifying a certificate comprising:

  • receiving a first information stored in an electronic tag with an antenna part of an interrogator;

    reading a second information and a digital signature printed on the surface of the certificate which comprises the electronic tag with a character reading part of the interrogator;

    calculating a third information from the first information and the digital signature using RSA; and

    certifying the certificate by comparing the second information with the third information.

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