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Self-authentication apparatus and method

  • US 6,185,316 B1
  • Filed: 11/12/1997
  • Issued: 02/06/2001
  • Est. Priority Date: 11/12/1997
  • Status: Expired due to Term
First Claim
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1. An apparatus for encoding an original image for authentication, the apparatus comprising:

  • a. an image receiver for receiving the original image, the image having true image points associated therewith;

    b. a false image point generator providing false image points;

    c. a key generator that generates a substantially random encoding key from the false image points using a preselected key generation technique;

    d. an encryptor that encrypts a plaintext using the generated encoding key to produce a ciphertext; and

    e. a transient template generator operably connected with the image receiver, the encryptor, and the false image point generator, the template generator providing a transient template by selectively combining the false image points, the ciphertext, and a preselected portion of the true image points.

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