This article presents an overview of image transformation with a secret key and its
applications. Image transformation with a secret key enables us not only to protect visual …

A block scrambling-based encryption scheme is presented to enhance the security of
Encryption-then-Compression (EtC) systems with JPEG compression, which allow us to …

As digital images are consistently generated and transmitted online, the unauthorized
utilization of these images is an increasing concern that has a significant impact on both …

To protect image contents, most existing encryption algorithms are designed to transform an
original image into a texture-like or noise-like image which is, however, an obvious visual …

We present a novel privacy-preserving scheme for deep neural networks (DNNs) that
enables us not to only apply images without visual information to DNNs but to also consider …

Permutation is a commonly used primitive in multimedia (image/video) encryption schemes,
and many permutation-only algorithms have been proposed in recent years for the …

In many practical scenarios, image encryption should be implemented before image
compression. This leads to the requirement of compressing encrypted images. Compressed …

The demand for image confidentiality is constantly growing. At the same time, ensuring the
confidentiality of video information must be organized subject to ensuring its reliability with a …

Perceptual encryption (PE) hides the identifiable information of an image in such a way that
its intrinsic characteristics remain intact. This recognizable perceptual quality can be used to …

An image compression-encryption scheme is proposed based on fractional order hyper-
chaotic systems combined with 2D compressed sensing (CS) and DNA encoding. This …