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22-07-2017, 03:45 PM

hi am michael i would like to get details on des algorithm in image stegnogrphy complete java code

jaseela123d · 26-07-2017, 09:30 AM

The incredible evolution of Internet technologies and their applications require a high level of data security through the communication channel. Image steganography is a digital technique for hiding information in a cover image. The least significant approach (LSB) is the most popular steganographic technique in the spatial domain due to its simplicity and concealability. All existing steganography methods focus on the inclusion strategy with less regard to pre-processing, such as secret image encryption. The conventional algorithm does not provide the required preprocessing in image-based steganography for better security as it does not offer flexibility, robustness and high level of security. The proposed work presents a unique technique for image steganography based on the Data Encryption Standard (DES) using the strength of S-Box mapping and the secret key. The preprocessing of the secret image is carried by the inclusion function of the steganography algorithm using two unique S-boxes. Preprocessing provides a high level of security since extraction is not possible without the knowledge of mapping rules and secreting key function. In addition, the proposed scheme is capable not only of encoding data, but also changes the intensity of pixels that contribute to encryption security.

The rapid development of information transfer across the network made it easier to send the information faster and more accurately to the destination side. There is a lot of transmission means to move the data to destination side like e-mails and chat; At the same time it is may be easier to change and abuse valuable data through hacking or cracking. Therefore, in order to securely transfer information to the destination side without modification or changes, there are a lot of approaches such as cryptography and steganography. This work deals with image cryptography as well as image steganography technique with various security issues and performance parameters, overview of cryptography, steganography approaches and various steganography techniques such as bit algorithm Least significant (LSB). We also show the performance of the proposed technique in terms of peek signal noise ratio (PSNR), entropy, and correlation.

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