ABSTRACT :
With the development of cloud computing, data privacy has
become a major problem. Reversible data hiding in encrypted
images (RDHEI) is an effective technique to embed data in the encrypted
domain. Indeed, a lot of methods have been proposed, but
none allows a large amount of embedding capacity with a perfect
reversibility. In this work, we present a new method of reversible
data hiding in encrypted images using MSB (most significant bit)
prediction. In order to reconstruct the original image without any
errors during the decryption phase, we adapt the to-be-inserted
message. Some of the pixels’ MSB values are used to highlight
the prediction errors and the remaining values are replaced by
bits of the secret message. Results show that it is still possible to
embed a large message (payload close to 1 bpp).
