Compensation of degradation, security, and capacity of LSB substitution methods by a new proposed hybrid n-LSB approach

Kemal Tütüncü1 and Özcan Çataltaş1

  1. Faculty of Technology, Selcuk University
    42130 Konya, Turkey
    {ktutuncu, ozcancataltas}@selcuk.edu.tr

Abstract

This study proposes a new hybrid n-LSB (Least Significant Bit) substitution-based image steganography method in the spatial plane. The previously proposed n-LSB substitution method by authors of this paper is combined with the Rivest-Shamir-Adleman (RSA), RC5, and Data Encryption Standard (DES) encryption algorithms to improve the security of the steganography, which is one of the requirements of steganography, and the Lempel-Ziv-Welch (LZW), Arithmetic and Deflate lossless compression algorithms to increase the secret message capacity. Also, embedding was done randomly using a logistic map-based chaos generator to increase the security more. The classical n-LSB substitution method and the proposed hybrid approaches based on the previously proposed n-LSB were implemented using different secret messages and cover images. When the results were examined, it has been seen that the proposed hybrid n-LSB approach showed improvement in all three criteria of steganography. The proposed hybrid approach that consists of previously proposed n-LSB, RSA, Deflate, and the logistic map had the best results regarding capacity, security, and imperceptibility.

Key words

image steganography, lossless compression, logistic map, data encryption

Digital Object Identifier (DOI)

https://doi.org/10.2298/CSIS210227048T

Publication information

Volume 18, Issue 4 (September 2021)
Year of Publication: 2021
ISSN: 1820-0214 (Print) 2406-1018 (Online)
Publisher: ComSIS Consortium

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How to cite

Tütüncü, K., Çataltaş, Ö.: Compensation of degradation, security, and capacity of LSB substitution methods by a new proposed hybrid n-LSB approach. Computer Science and Information Systems, Vol. 18, No. 4, 1311–1332. (2021), https://doi.org/10.2298/CSIS210227048T