A double-embedding hidden image encryption and authentication scheme based on compressed sensing and double random phase encoding

The image may be maliciously tampered when transmitted on the shared platform, and the receiver cannot determine whether the received image is a true image. In order to solve the above problems, an image encryption and authentication scheme with visual security based on compressed sensing and double random phase encoding are proposed. Firstly, the plain image is compressed and encoded by double random phase encoding to obtain authentication information to verify the authenticity of the image. Then, the compressed image and authentication information are fused and then scrambled to hide the authentication information and ensure the security of the encrypted image and authentication information. Finally, the secret image and authentication information are embedded into the carrier image by singular value decomposition and least significant bit method, respectively, to improve the security of the secret image and the anti-attack ability of the authentication information. The experimental results show that the PSNR and peak-to-correlation energy of the image are still greater than 17 dB and 0.001 under a certain attack intensity, indicating that the scheme has good reconstruction quality and strong robustness.