In this paper we review a number of optical image encryption techniques proposed in the
literature inspired by the architecture of the classic optical Double Random Phase Encoding …

Optical image/data encryption techniques are mostly based on the manipulation of spatial
distributions of light's amplitude, phase, and polarization. Information encoding with phase …

A color image encryption algorithm is designed by use of Arnold transform and discrete
cosine transform (DCT). The RGB components of the color image are scrambled by Arnold …

To enhance the security of double random phase encoding, a kind of amplitude scrambling
operation is designed and introduced into an image encryption process. The random data of …

In this paper, an asymmetric cryptosystem for optical image encryption using biometric keys
is proposed based on the phase retrieval algorithm and the phase-truncated Fourier …

We propose a novel nonlinear image-encryption scheme based on a Gerchberg–Saxton
(GS) phase-retrieval algorithm in the Fresnel transform domain. The decryption process can …

In this paper, we propose a scheme for information security under the basic double random
phase encoding framework but with enhanced complexity and immunity against the known …

We propose and analyze a dual encryption/decryption scheme, motivated by recent interest
in polarization encoding. Compared to standard optical encryption methods, which are …

A multiple-image encryption scheme is proposed based on the phase retrieval process and
phase mask multiplexing in the fractional Fourier transform domain. First, each original gray …

A novel multiple-image encryption scheme using the nonlinear iterative phase retrieval
algorithm in the gyrator transform domain under the illumination of an optical vortex beam is …