Secure Lossless Data Hiding in Encrypted Images Using Public Key Cryptography 🔐

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About Project:
The Lossless data hiding provides the embedding
of data in a host image without any loss of data. This research
explain a lossless data hiding and image cryptography method
based on Choas - Block to image encryption the lossless means
if the marked image is considered reliable, the embedding distortion can be totally removed from marked image afterward
the embedded data has been extract. This procedure uses features of the pixel difference to embed more data than other
randomly partition using Block based Sharpness Index Filtering and refine with single level wavelet decomposition shifting
technique to prevent image distortion problems. In this work
also manages reversible data hiding based on chaotic technique. In which initially image histogram processes to perceive
the pixels which is chosen for hiding each bit of secret data,
then by the logistic chaotic map compute an order of hiding
each bit stream. Performances differentiate with other exist
lossless data hiding plan providing show the superiority of the
research. In this proposed research PSNR is found nearly
5.5*103 and existing 4.8*103 at 100 embedding rate which enhance for our existing technique that simulated in MATLAB
2014Ra