Skin Tone Based RGB Channel Image Steganography Technique
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 8
Abstract
Image based Steganography utilize the image as cover media to hide the secret data.To provide an imperceptible stego-image for human vision, Skin Tone based RGB Channel based Steganography technique is proposed. For additional security, DES Algorithm is used to encrypt and decrypt the data. Instead of hiding the data in the whole image, data will be hidden in selected regions of the image.RGB image selected region has R channel G channel and B channel. Selected region and Cipher text is divided into 8 chunks. Each cipher block is allocated to be embedded in each selected region of image block by user defined key. Out of three channels in each pixel of the image, one channel is used as indicator channel; other two channels are used for embedding the cipher text blocks in 4 least significant bits. The last 2 LSB indicators tell whether the cipher text is embedded in one channel or two channels, so that retrieving can be done accordingly at the receiver. This technique is implemented and result shows that very good PSNR (Peak Signal to Noise Ratio) is obtained.
Authors and Affiliations
Kanimozhi T
Keywords
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