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Based on fixed point theory, this paper proposes a simple but efficientmethod for image integrity authentication, which is different from DigitalSignature and Fragile Watermarking. By this method, any given image can betransformed into a fixed point of a well-chosen function, which can beconstructed with periodic functions. The authentication can be realized due tothe fragility of the fixed points. The experiments show that 'Fixed PointImage' performs well in security, transparence, fragility and tamperinglocalization.

A Novel Method for Image Integrity Authentication Based on Fixed Point Theory