06185316 is referenced by 268 patents and cites 39 patents.

An apparatus, method, and computer program for providing authenticating indicia and verifying the image thereby. One particular embodiment is a biometric application such as a fingerprint-based authentication system. The apparatus includes an image receiver for receiving the original image with true image point, a false image point generator providing false image points, and a transient template generator that selectively combines the true image points and the false image points. The apparatus can also constrain false image points to be non-coinciding plausible impostors of the true image points. The apparatus can include a claimant image receiver, a transient template receiver and a comparator for comparing the claimant image points with the template image points and producing an authentication signal. The method can employ a hashing technique to produce an encoding key from the non-coincident plausible impostor false image points, and preselected encryption techniques to produce ciphertext from plaintext with the encoding key. The method can include extracting claimant image points from template image points and iteratively constructing candidate decoding keys from the post-extraction residual points. Authentication is indicated if the decoding key successfully produces a matching plaintext from the ciphertext.

Title
Self-authentication apparatus and method
Application Number
8/969210
Publication Number
6185316 (B2)
Application Date
November 12, 1997
Publication Date
February 6, 2001
Inventor
William J Buffam
West Chester
PA, US
Agent
Mark T Starr
US
Rocco L Adornato
US
Assignee
Unisys Corporation
PA, US
IPC
G06K 9/00
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