A New Data Hiding Approach in Images for Secret Data Communication with Steganography

Abstract

In this paper, a new secret data hiding and communication is proposed for natural images.in this proposed methodology. The aim of steganography is to hide an information message within harmless cover medium in such way that it's not possible even to observe that secrete message. It doesn't replace cryptography however rather boosts the security using its obscurity options. In the projected its obscurity features. In the proposed algorithm we have used second order differential equation to hide the data which improve the security level of hidden data. In encryption, information is transformed in such a way that it cannot be detect by hacker. But during encryption, message is changed so it become distorted and intruder may suspect about the presence of important information. For this skin tone detection is performed using HSV (Hue, Saturation and Value) color space. Additionally secret data embedding is performed victimization frequency domain approach-DWT (Discrete wavelet Transform), DWT outperforms than DCT (Discrete cosine Transform). Secret information is hidden in one of the high frequency sub-band of DWT by tracing skin pixels therein sub-band. Totally different steps of data hiding are applied by cropping a picture interactively. The output of our technique provides higher results because with the assistance of cropping an increased security than hiding data while not cropping i.e. in whole image, thus cropped region works as a key at decryption aspect. thus with this object destined steganography we have a tendency to track skin tone objects in image with the higher security and satisfactory PSNR (Peak-Signal-to-Noise Ratio).Modern steganography's goal is to stay its more presence undetectable.

A New Digital Image Steganography Approach Based on The Galois Field GF(pm) Using Graph and Auto

“…As a result, data security becomes increasingly important. There are two popular ways to provide security, which are cryptography and data hiding [1,3,4,8,17,23]. Cryptography is used to encrypt data in order to make the data unreadable by a third party [3].…”

“…Based on the purpose of the application, data hiding is generally divided into steganography that hide the existence of data to protect the embedded data and watermarking that protect the copyright ownership and authentication of the digital media carrying the embedded data. Depend on the type of digital media there are many types of steganography, for example image, audio and video steganography [2,3,8,16,17,21,22,27]. This work only focuses on steganography in digital images in spatial domain.…”

“…This work only focuses on steganography in digital images in spatial domain. Then the steganography is achieved by changing colors of some pixels directly in the image [17,22].…”

“…The simplest and most popular spatial domain image steganography method is the least significant bit (LSB) substitution (called LSB based method). For 24-bit RGB and 8-bit gray images, in this method the data is embedded in the cover image by changing the least significant bits of the image directly, therefore it becomes vulnerable to security attacks [7,17,19,21,22,28,29]. EZ Stego method for palette images is similar to the commonly used LSB based method.…”