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Remote authentication of an object using a signature part

  • US 7,565,542 B2
  • Filed: 01/25/2005
  • Issued: 07/21/2009
  • Est. Priority Date: 05/18/2004
  • Status: Expired due to Fees
First Claim
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1. A method of authenticating an object, the method including, in a computer system:

  • receiving indicating data from a sensing device, the sensing device generating the indicating data in response to sensing of coded data provided on or in a surface associated with the object, the indicating data being indicative of;

    an identity of the object; and

    ,a part of a signature, the signature being a digital signature of at least part of the identity and comprising a plurality of signature parts;

    determining, using the indicating data, a received identity, a received signature part and a received signature part identifier identifying the received signature part;

    determining, using the received identity, a determined signature;

    determining, using the determined signature and the received signature part identifier, a determined signature part;

    comparing the determined signature part to the received signature part; and

    ,authenticating the object using result of the comparison.

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