A Hybrid Scheme for Cryptography and Watermarking

Abstract: With the rapid development the computer network, data has been an exchange in the form of text, image, audio and video, hence securing of all type of data is most necessary in today�s era. To enhance security and copyright protection of digital data, we are implementing a hybrid scheme for cryptography and watermarking. In this scheme, the message divided the five different parts and encrypts them with the Fibonacci series, XOR cipher, PN sequence, RSA, Hill cipher. After obtaining the encrypted data, this data is hide using one bit LSB watermarking, two bit LSB watermarking and three bit LSB watermarking. This paper also represents the comparative analysis of one bit LSB watermarking, two bit LSB watermarking and three bit LSB watermarking.

Keywords: Encryption, Decryption, Cryptography, LSB, Watermarking, Fibonacci series, PN sequence, XOR cipher, RSA, Hill cipher, Hybrid technique.