Image Encryption Using Compressive Sensing and Detour Cylindrical Diffraction

An image compression and encryption method integrating compressive sensing (CS) and Detour Cylindrical-diffraction-based double Random-phase Encoding (DCRE) is proposed. The plaintext image is first compressed by CS and then encrypted by the DCRE algorithm. The existing integrated CS and double random phase encoding (DRPE) methods are known to be vulnerable to the plaintext attack and even ciphertext-only attack. The combination of CS and DCRE, however, will be free of the plaintext attack and ciphertext-only attack, free of phase retrieval attack and allows enlarged key space. Numerical simulation results demonstrate the effectiveness and flexibility of the proposed scheme.