Separable Reversible Data Hiding Using Compression in Encrypted Image

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Provided by: Creative Commons
Topic: Big Data
Format: PDF
In this paper, the problem of transmitting redundant data over an insecure, bandwidth-constrained communications channel is discussed. A content owner encrypts the original uncompressed image using an encryption key. Then, a data-hider may compress the least significant bits of the encrypted image using a data-hiding key to create a sparse space to accommodate some additional data. Using data hiding key the receiver can extract additional data even the receiver has no information about the original image content.
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