AN IMPROVED CRYPTO-STEGANOGRAPHIC TECHNIQUE FOR DATA HIDING USING MODIFIED LEAST SIGNIFICANT BIT AND RIVEST SHAMIR ADLEMAN ALGORITHMS

G. O. Ogunleye; B. A. Ayogu; O. T. Ayeni

G. O. Ogunleye Department of Computer Science, Federal University, Oye-Ekiti, Ekiti State, Nigeria.
B. A. Ayogu Department of Computer Science, Federal University, Oye-Ekiti, Ekiti State, Nigeria.
O. T. Ayeni Department of Computer Science, Federal University, Oye-Ekiti, Ekiti State, Nigeria.

Keywords: Rivest Shamir, Adleman, Steganographic, Data, Bit

Abstract

This study is aimed at developing an improved LSB technique by overcoming the standard LSB technique's high imperceptibility and transparency, especially in JPEG and BMP formats which are the characteristics of a truly secure and reliable security technique for remote data transmission. The creation of a modified LSB (mLSB+DWT) algorithm combined with RSA would enhance secured data transmission and image security. The standard LSB was modified to create a balance between the algorithm's exploration and exploitation stages so as to improve quantity solution in detecting high energy coefficient (optimal wavelet coefficient) of DWT and to resolve conflicting requirements of different parameters and properties of digital images. The techniques achieved improved Average difference, Mean Square Error (MSE), Root Mean Square Error (RMSE), Peak Signal to Noise Ratio (PSNR), Image Fidelity and Normalized Cross Correlation (NCC), indicating a higher quality measurement between the original and compressed images using different formats