Advanced technologies such as artificial intelligence, big data, cloud computing, and the
Internet of Things have changed the digital landscape, providing many new and exciting …

We demonstrate that optical encryption methods based on the joint transform correlator
architecture are vulnerable to chosen-plaintext attack. An unauthorized user, who introduces …

Optical waves as information carriers can process two-dimensional information in parallel
with high speed and have many degrees of freedom (eg, wavelength, amplitude, phase, and …

A new superposition based multiple-image encryption using Fresnel-domain high
dimension chaotic phase encoding is proposed. In this method, each color image of an …

A multiple-image encryption and authentication approach by space multiplexing has been
proposed. The redundant spaces in the previous security systems employing sparse …

A ciphertext-only attack (COA) on a joint transform correlator (JTC) encryption system is
proposed. From the perspective view of optical cryptanalysis, we find out that the issue to be …

We propose a binary image encryption method in joint transform correlator (JTC) by aid of
the run-length encoding (RLE) and Quick Response (QR) code, which enables lossless …

We propose a novel method for multiple-image encryption using a phase retrieve algorithm
and intermodulation in the Fourier domain. All plaintexts to be encoded are first encoded …

We present a double image encryption scheme by using random pixel exchanging and
phase encoding in gyrator domains. Two original images are regarded as the amplitude and …

Optical encryption systems have great potential for flexible and high-performance data
protection, making them an area of rapid development. However, most approaches present …