Enhanced Scrambled Prime Key Encryption Using Chaos Theory and Steganography

In this paper we have analyzed the strength and weakness of scrambled prime key encryption proposed by Haidar et al. [10] for data encryption using key elements which are prime numbers. However, this scheme exhibits its vulnerabilities in the face of chosen plaintext attack. Hence we, in this paper, extended the algorithm by introducing chaos theory and steganography, which offers better security and robustness. We have taken the partially encrypted text from [10] and embedded the same in a carrier image. In this process, we have chosen a novel chaos generator to select the pixels into which the text is to be embedded.