Wavelet -Based Modified Intermediate Significant Bit Insertion for Text Steganography

Abstract

In this paper, we propose and investigate the use of a modified
version of Intermediate Significant Bit (ISB) insertion algorithm, so-called
here as MISB algorithm for secret text steganography. The secret text is
passed through a sequence of ciphering techniques. A Modified
Intermediate Significant Bit MISB insertion algorithm is proposed for
hiding the bit sequences of the cipher text into the time-frequency domain
using wavelet transform of the image pixels, in order to improve the
robustness of the Steganography system. Results demonstrate the
effectiveness of wavelet Modified Intermediate Significant Bit WMISB
while evaluating its performance using Peak Signal to Noise Ratio PSNR
measure. Moreover, additional experiments are evaluated for noising, and
image compression for cover images to compare their Peak Signal to
Noise Ratio PSNR. The drawn results confirm the effectiveness of the
proposed Wavelet-based Modified Intermediate Significant Bit Insertion
WMISB, Also, Bit Error Rate BER, is a key parameter that is used in
assessing systems that transmit digital data from one location to another.