“…are highly robust and imperceptible as compared to spatial domain techniques [6,8,12].The process of digital image scrambling by changing the pixel position of meaningful image through matrix transform in to meaningless disorder image is called image scrambling. There are several techniques for scrambling the image such as based on permutation substitution are enhanced blowfish algorithm, chaotic standard map and image encryption based algorithms are chaos random sequence, AES encryption algorithm [17,18], hash algorithm and block cipher. In our proposed scheme we use Cipher Block Chaining for encryption of the watermark image [16,19].…”