IMPLEMENTATION OF CRYPTOGRAPHY AND STEGANOGRAPHY FOR TEXT ON COVER IMAGE USING AES AND F5 ALGORITHM
AbstractThis journal explains about implementation that combine both cryptography and steganography methodÂ for texton cover image to increase the security level. Text will be encrypted with AES algorithm, and thenÂ it will be embedded to the cover image using F5 algorithm. The implemented AES algorithm has a goodÂ performance, with Avalanche Effect value ranges from 0.43 â€“ 0.59. The resulting image, or stego image, hasÂ a very similar histogram with the original image, so there is no significant difference between the two ofÂ them. However, the file size change about 1.25 â€“ 3.25 times larger than theoriginal image. If noise orÂ disruption is given to stego image, the information can not be extracted.
Keywords: cryptography, steganography, AES, F5