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Method and apparatus for in-camera image marking and authentication

  • US 5,862,218 A
  • Filed: 04/04/1996
  • Issued: 01/19/1999
  • Est. Priority Date: 04/04/1996
  • Status: Expired due to Term
First Claim
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1. A method of image authentication using a digital camera comprising the steps of:

  • (a) initializing an authentication system in the digital camera with a user programmable encryption password;

    (b) acquiring original image data with the digital camera;

    (c) creating with the authentication system within the digital camera first authentication data from said original image data, said first authentication data for the purpose of comparing with second authentication data created from second image data in order to determine if said second image data is identical to said original image data; and

    (d) encrypting with the authentication system within the digital camera said first authentication data to create encrypted first authentication data and associating the encrypted first authentication data with the original image data for output from the digital camera, whereby the first authentication data is inaccessible from the digital camera in unencrypted form and the original image data is inaccessible from the digital camera without its associated encrypted first authentication data.

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