Millions of confidential images are transmitted every day by people through the multimedia
systems of the internet. Such confidential information in the images may be belong to the …

Transmission of multimedia data such as images, videos, and audio over the Internet is risky
due to cyberattacks. To overcome the security issues, several encryption schemes are …

Compression and encryption are the two main steps generally used to ensure fast and
secure transmission of digital images over public communication channels. Among the …

Accepted: 20 August 2022 Medical images typically have diagnostic and confidential data
and information about the patient and are usually sent using public networks. Due to the …

Symmetric cryptography forms the backbone of secure data communication and storage by
relying on the strength and randomness of cryptographic keys. This increases complexity …

Color image compression is a good way to encode digital images by decreasing the number
of bits wanted to supply the image. The main objective is to reduce storage space, reduce …

The security of message information has drawn more attention nowadays, so; cryptography
has been used extensively. This research aims to generate secured cipher keys from retina …

Grayscale images are extensively used due to their simplicity and cheapness in storage and
transmission compared to color one of RGB base. It can also be considered a solution for …

In this paper, a new high-performance lossy compression technique based on DCT is
proposed. The image is partitioned into blocks of a size of NxN (where N is multiple of 2) …

Cloud photo storage has widely spread as an ideal technology for managing digital images
since it is more convenient than backing up to a physical medium (ie, hard drive and …