Is seeing really believing anymore? Can we trust images as evidence of true events? The answer is generally "no," although image-authentication algorithms do make it possible to tell whether or not an image has been modified. Steve describes and implements a class of algorithms that makes it possible to authenticate digital images.

April 01, 1995
URL:http://www.drdobbs.com/security/image-authentication-for-a-slippery-new/security/image-authentication-for-a-slippery-new/184409531

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