LSB based Digital Image Steganography System
Rawan Mualla M. AlKhuwaytiri, Salah ElDin Zaher Olaymi · International Journal of Computer Applications · 2021
Steganography can be defined as inserting information, such as a text file or a picture file into different types of files such as a picture file, audio file, or a video file.Digital picture steganography is a branch of computer science that is interested in inserting textual/pictorial confidential messages into digital pictures.The purpose of digital picture steganography is securing private and sensitive textual/pictorial information by inserting it into a shield digital picture.Nowadays, digital picture steganography has become an important topic since there is a need for securing digital information.In this paper, a digital picture steganography system is proposed.The proposed system is implemented as a desktop application.The system consists of two parts: confidential picture hiding and confidential picture extraction.To hide a confidential picture into a shield picture, both pictures are shuffled using Arnold Transform.Then, the confidential picture is encrypted and embedded into the shield picture using LSB technique.After that, the stego picture is de-shuffled using Arnold Inverse Transform.To take out a confidential picture from a stego picture, a stego picture is shuffled using Arnold Transform.Then the confidential picture is taken out from the LBS of stego picture.After that, the confidential picture is decrypted and de-shuffled using Arnold Inverse Transform.To evaluate the performance of the system, it was experimented in different gray scale images and PSNR and MSE were calculated and compared.