Reversible data hiding in encrypted image with separable capability and high embedding capacity.

•A novel, high-capacity, reversible data hiding scheme in encrypted image is proposed.•Classification for encrypted blocks is conducted based on RLC pre-processing.•RLC and LSB compression are used to vacate room from two types of encrypted blocks.•Progressive decryption is applied to obtain better quality of direct-decrypted image.•Coding length judgment and hash authentication guarantee accuracy of image recovery.