Title: A Discrete Wavelet Transform Approach for Enhanced Security in Image Steganography

Issue Number: Vol. 5, No. 1
Year of Publication: Jan - 2016
Page Numbers: 10-20
Authors: Ashley S. Kelsey, Cajetan M. Akujuobi
Journal Name: International Journal of Cyber-Security and Digital Forensics (IJCSDF)
- Hong Kong
DOI:  http://dx.doi.org/10.17781/P001978


The magnitude of the growth in the Internet combined with the increase in technological innovations poses serious threats to the process of digital data transmission. The government, military, small and large businesses and corporations, and individuals transmit private or confidential information over public and private networks every day creating a need for preserving the confidentiality of this information. But because of the growth of the Internet and technology the security of information and data being transmitted and received is at risk of being copied, destroyed, and/or modified. In this paper, an advanced, multi-level security steganographic method will be presented. The proposed system combines two hiding methods, including Cryptography and Steganography. Cryptography involves encrypting the secret data or information into a non-recognizable cipher. Steganography is then employed using the Discrete Wavelet Transform (DWT) method, to embed the encrypted data into a cover medium to hide its existence. The proposed system employs wavelet-based fusion while manipulating the embedding strength factors in order to improve the overall hiding capacity, imperceptibility, robustness and security of the final steganographic image.