  This paper analyzes a revised fragile watermarking scheme proposed by Botta
et al. which was developed as a revision of the watermarking scheme previously
proposed by Rawat et al. A new attack is presented that allows an attacker to
apply a valid watermark on tampered images, therefore circumventing the
protection that the watermarking scheme under study was supposed to offer.
Furthermore, the presented attack has very low computational and memory
requirements.
