An Improved Method for Combine (LSB and MSB) Based on Color Image RGB

Sally A. Mahdi

doi:10.30684/etj.v39i1b.1574

Abstract

Image steganography is the art of hiding data into an image by using the secret key. This paper presents two techniques that combine the most significant bit (MSB) as well as the least significant bit (LSB) based on a color image (24bit for RGB). The presented study proposes a novel method to combine (LSB and MSB) bits based on check MSB values and replace bits from LSB with a secret message. The result of this proposed method that made not affect quality stego -image based on the resulting histogram that shows a match between the cover image and stego- image and more secure because not hidden in all image. The factors were used Mean Square Error (MSE), Compute Payload, in addition to Peak Signal to Noise Ratio (PSNR). The PSNR’s rate is high and MSE is less. The result of this paper when applying on the different image gives high PSNR of 87.141 and less MSE of 0.00012 when inserting message 80 bits and reduction value PSNR of 72.023 and MSE of 0.0040 when inserting message 1200 bits and measure entropy is the same value for cover image and stego –image then this method is more security for the attacker.

Highlights

The internet is providing a lot of advantages to humans, to exchange or get information, working, learning, and so on
This paper proposes a new approach by using combine Least significant bit (LSB) and most significant bit (MSB) based on a color Image consist of 24 bit for 3 channel (Red, Green, Blue), As the data is hidden in dark areas more than light areas, and as a result, no change in the stego image appears based on the same secret key for embedding and extracting which is using point curve sin than the agreement between sender and receiver
The method has experimental on different images like (Lena, Baboon, Mandi, ppepers, flours) as shown in Figure 6 with different extensions such as (BMP, PNG,..etc) and different image size based on using proposed idea using a secret key to hide a secret message in these points

Summary

Introduction

The internet is providing a lot of advantages to humans, to exchange or get information, working, learning, and so on. Privacy of data and security are the problems of the internet. A lot of approaches were utilized to provide security including digital signatures, steganography, cryptography, and watermarking [1]. Steganography comes from the Greek words and indicates hidden writing, as “stegano” refers to “covered”, and while “graphy” refers to “writing” [2]. The security of information is required to transmit confidential data. Cryptography and steganography are applied to secure the secrecy and confidentiality of information. With regard to the former, the secret text will be converted to ciphertext, whereas in the latter, the secret text won’t be

Methods

Results

Conclusion