This study presents a new method based on the combination of cryptography and information hiding methods. Firstly, the image is encoded by the Double Random Phase Encoding (DRPE) technique. The real and imaginary parts of the encoded image are subsequently embedded into an enlarged normalized host image. DRPE demands two random phase mask keys to decode the decrypted image at the destination. T...

The aim of this paper is to increase security of double random phase encoding (DRPE) method using chaos theory and hash function for phase mask generation. DRPE encodes the input image by the use of two keys which are random phase masks. Having these keys, the original image can be easily obtained with the reverse process, called decoding. To enhance the system’s security, instead of sending ra...

A method for a compact lens-less image encoding system using diffraction grating and random phase masks is presented. Lensless double phase encoding is implemented using diffraction grating. The Beam Propagation Method (BPM) is used to analyze optical waveguide grating. The phase keys functions and grating parameters are the encryption keys. Simulation results are presented in support of the pr...

A phase encoded image is encrypted using the double random phase encoding technique, (DRPE). The effects of using a variable dynamic range of phase distribution during phase encoding (pre-encryption) are examined. We begin by phase encoding the input image using the full phase range, from p to p. We perform numerically perfect encryption and we then introduce errors into the decrypting phase-ke...

Double random phase encryption (DRPE) is one of the well-known optical encryption techniques, and many techniques with DRPE have been developed for information security. However, most of these techniques may not solve the fundamental security problem caused by using fixed phase masks for DRPE. Therefore, in this paper, we propose a key phase mask updating scheme for DRPE to improve its security...

In this paper, we propose a new method for color image-based authentication that combines multispectral photon-counting imaging (MPCI) and double random phase encoding (DRPE) schemes. The sparsely distributed information from MPCI and the stationary white noise signal from DRPE make intruder attacks difficult. In this authentication method, the original multispectral RGB color image is down-sam...

Phase-only information derived using a double random-phase encryption (DRPE) algorithm is not visually recognizable but can be authenticated nonlinear cross-correlation method. This considered to enhance DRPE security (which vulnerable chosen-plaintext attack). Here, we show that phase-only images the method remains such an attack; at-risk include full- and sparse-phase phase with noise. We dev...

Encryption is the most useful technique used for security of data during storage and transmission. A well-known encryption scheme called Double Random Phase encoding was introduced by Refregier Javidi. But due to its linear nature, this has been proven vulnerable against Known plaintext chosen attacks. Here in paper, we propose a chaotic map-based nonlinear that enhances DRPE images. Clifford a...

With the emergence of cloud computing, large amounts private data are stored and processed in cloud. On other hand, owners (users) may not want to reveal information providers protect their privacy. Therefore, users upload encrypted or third-party platforms, such as Google Cloud, Amazon Web Service, Microsoft Azure. Conventionally, must be decrypted before being analyzed cloud, which raises pri...

Abstract With the advancement of multimedia technology and coming big data era, size image is significantly increased. However, traditional encryption methods cannot solve emerging problems efficient compression. To settle with this challenge, an effective content-adaptive compression method based on compressive sensing double random phase encoding (DRPE) proposed in paper. The original convert...