Print ISSN: 1811-9212

Online ISSN: 2617-3352

Keywords : Lorenz chaotic map


Design a Hybrid Cryptosystem Based Chaos and Sharing for Digital Audio

Mahmood Z. Abdullah; Zinah J. Khaleefah

IRAQI JOURNAL OF COMPUTERS, COMMUNICATIONS, CONTROL AND SYSTEMS ENGINEERING, 2017, Volume 17, Issue 1, Pages 59-70

With the growth rate of wireless communication with internet and
multimedia. The wireless network has expanded their applications in our life.
Cryptography and steganography play important role within data security. This
paper chiefly produces a novel hybrid cryptography and steganography for
digital audio base chaos system and secret sharing scheme algorithm. These
algorithms have multilevel of processing with the digital audio to increase the
level of security. In this algorithm, digital audio was encrypted with a novel
encryption method based Lorenz chaos map. Then, divide the encrypted audio
to N encrypted audio based on secret sharing scheme. Finally, hiding N
encrypted audio in N cover images with chaos system process. The result shows
that the algorithm for audio encryption have a high degree of confidence, large
key space reached more than 2672 possible of a key, key sensitivity, and high
quality of recovered digital audio. Chaos system and secret sharing process
with multi-cover images offers additional space, security for the secret audio
message, and quality for cover images. The power signal to noise ratio of cover
images reached to 57db with embedding 334 KB of secret audio with four cover
images.