Hiding data in images using steganography techniques with compression algorithms

Abstract

Steganography is the science and art of secret communication between two sides that attempt to hide the content of the message. It is the science of embedding information into the cover image without causing a loss in the cover image after embedding.Steganography is the art and technology of writing hidden messages in such a manner that no person, apart from the sender and supposed recipient, suspects the lifestyles of the message. It is gaining huge attention these days as it does now not attract attention to its information's existence. In this paper, a comparison of two different techniques is given. The first technique used Least Significant Bit (LSB) with no encryption and no compression. In the second technique, the secret message is encrypted first then LSB technique is applied. Moreover, Discrete Cosine Transform (DCT) is used to transform the image into the frequency domain. The LSB algorithm is implemented in spatial domain in which the payload bits are inserted into the least significant bits of cover image to develop the stego-image while DCT algorithm is implemented in frequency domain in which the stego-image is transformed from spatial domain to the frequency domain and the payload bits are inserted into the frequency components of the cover image.The performance of these two techniques is evaluated on the basis of the parameters MSE and PSNR.

Robust large image steganography using LSB algorithm and 5D hyper-chaotic system

“…In the channel of information, the noise is any degradation in the image signal caused by external disturbance such as: Wireless transmission, Satellite transmission and Network cable transmission [21][22][23]. Therefore, filtering of an image corrupted by noise is a significant area of image restoration [23][24][25] and depending on the type of disturbance in the signal [25][26][27][28]. For testing the proposed system against different types of noise (white noise, salt and pepper noise.)…”

Comparative Security Analysis of Web-Based Instant Messaging Applications

“…Banyaknya kejahatan siber yang terjadi pada aplikasi instant messaging menunjukkan aplikasi tersebut memiliki kerentanan (vulnerability) dari segi keamanannya [7]. Pesan chat pengguna yang dapat diakuisisi oleh pelaku cybercrime merupakan salah satu contoh vulnerability pada artefak digital aplikasi instant messaging itu sendiri [8] [9]. Hal ini tentunya menjadi kekhawatiran tersendiri bagi para pengguna aplikasi instant messaging khususnya yang berbasis web, karena dari aplikasi tersebut pelaku cybercrime dapat dengan mudah mengakuisisi artefak digital milik korban tanpa perlu menggunakan smartphone korban [10].…”

Quality Factor terhadap Kapasitas Pesan Rahasia pada Steganografi Citra JPEG dan Kualitas Citra Stego

“…Selain itu, terkait risiko keamanan yang juga tidak kalah pentingnya perlu untuk diperhatikan (Hamzah et al, 2020). Di sisi lain steganografi disebutkan sebagai perpaduan antara ilmu dan seni yang digunakan dalam berkomunikasi rahasia dengan cara menyembunyikan isi pesan ke dalam suatu media penampung tanpa menyebabkan media penampung berubah setelah dilakukan penyisipan (Abdel Wahab et al, 2019). Salah satu media penampung yang mudah didapatkan dan populer digunakan adalah citra dengan format Joint Photographic Experts Group (JPEG).…”