Abstract
with the rapid advance in digital network, information technology, digital libraries, and particularly World Wide Web services, many kinds of information could be retrieved any time. Thus, the security issue has become one of the most significant problems for distributing new information. It is necessary to protect this information while passing over insecure channels. Steganography introduces a strongly approach to hide the secret data in an appropriate media carriers such as images, audio files, text files, and video files. In this paper, a new image steganography method based on spatial domain is proposed. According to the proposed method, the secret message is embedded randomly in the pixel location of the cover image using Pseudo Random Number Generator (PRNG) of each pixel value of the cover image instead of embedding sequentially in the pixels of the cover image. This randomization is expected to increase the security of the system. The proposed method works with two layers (Blue and Green), as (2-1-2) layer, and the byte of the message will be embedded in three pixels only in this form (3-2-3). From the experimental results, it has found that the proposed method achieves a very high Maximum Hiding Capacity (MHC), and higher visual quality as indicated by the Peak Signal-to- Noise Ratio (PSNR).
Highlights
Data security or data privacy has become increasingly important as more and more systems connected to the internet
In [11], a modified image steganography method based on least significant bit (LSB) technique has presented
In [12], the authors have proposed a secure method of steganography in which three main entities are exercises; pseudo random number generator, Least Significant Bit (LSB) substitution, and Optimal Pixel Adjustment Process (OPAP)
Summary
Data security or data privacy has become increasingly important as more and more systems connected to the internet. One way is encryption, which refers to the process of encoding secret information in such a way that only the right person with the right key can decode and recover the original information successfully Another way is steganography technique, which hides secret information into a cover media or carrier so that it becomes unnoticed, and less attractive [1]. Steganography is the art of hiding a message signal into a host signal without any perceptual distortion of the host signal It hides the secret message within other innocuous looking cover files, called carriers, (i.e. images, text files, audio files, or video files) so that it cannot be observed [4]. Carrier is known as coverobject or cover-image, in which message is embedded.
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