A chip-based watermarking framework for color image authentication

Abstract

In today's scenario authentication of multimedia contents have received a sharp attention as a result of epidemic development of cyber crime. Illegal replication, misappropriation of digital content has achieved an enigmatic growth. In this regard we've already proposed different frameworks for invisible fragile watermarking for color image authentication. In present context we are going to propose a chip-based framework for color image authentication in accordance with our proposed LSB scheme. In this watermarking framework, a secret key will be given to the user and with the help of a particular hash function the user can authenticate the ownership of an image. The security issue is guaranteed with the secret key and the hash function. If a forger tries to perform watermark extraction with an inappropriate key and a wrong hash function he'll get an image which resembles noise. We named our proposed chip as BLIND CHIP, because we've used blind method for watermark extraction, i.e., neither the host image nor the watermark image is needed at the extraction end.