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Reversible Data Hiding In Encrypted Images by Reserving Space Prior To Encryption

Tamil Priyadharsini.R, Sivamurugan.J

Reversible data hiding (RDH) in encrypted images, which can recover the original image without any distortion after embedded data is extracted, while protecting the image contents confidentiality. All previous methods embed data by reversibly vacating space from the encrypted images, which may be subject to some errors on data extraction and/or image restoration. Reserving Space before encryption with a traditional Reversible data hiding algorithm, and it is easy for the data hider to reversibly embed data in the encrypted image. The proposed method can achieve real reversibility, that is data extraction and image recovery are free of any error and also embed large payloads for the same image quality as previous method.