Even symmetric chaotic and skewed maps as a technique in video encryption

Abstract

The massive growth and use of digital multimedia through computer networks, including video and images, have increased the demand for protecting this digital data. To secure digital video, video encryption is frequently utilized. In this paper, a brand-new video scrambling technique based on two chaotic linearly symmetric maps and one chaotic tent map that has been twisted is suggested. The permutation procedure moves every frame pixel's position using a P-box created by permuting a linearly symmetric chaotic sequence. The diffusion technique employs both linearly symmetric chaos maps and distorted tent maps to create key streams. The keystream closely resembles simple frames because the pixels in the permuted frame indicate which of the two even symmetric chaos maps is replicated each time for the following byte. The information entropy, histogram, neighboring pixel correlation and sensitivity analysis, number of pixels changing regions (NPCR), and unified mean change intensity are used to thoroughly evaluate the recommended method's capacity to improve performance and security (UACI). Comparatively to other methods, the suggested algorithm is resistant to clipping, salt and pepper noise, speckle noise rotation assaults, and clipping. This positive outcome indicates that the plan can be successfully implemented for secure video communication applications.

A Visually Meaningful Color-Video Encryption Scheme That Combines Frame Channel Fusion and a Chaotic System

“…To achieve the goal of video security, the video is categorized into three aspects, which are confidentiality, integrity, and availability [21]. Existing video encryption schemes can achieve integrity and confidentiality, but not many can achieve better usability; this is because many traditional video encryption techniques encrypt the original video into pixel-homogenized snowflake speckles [22][23][24][25], sacrificing the encrypted video's usability, making the technique unsuitable for many video applications that provide features such as video previewing, video categorization, and so on. For example, when users want to download a video that they need from the cloud, they have to decrypt all videos that they have stored before they can find the target video, which wastes a great amount of their time.…”

“…The scheme performs separation and zero-filling operations, zigzag scanning, and rotation operations on three channels of the video frames in sequence and then performs an encryption operation on the scrambled frames to achieve the encryption of the video with high security and efficiency. El-den et al proposed a video encryption scheme that combines symmetric chaotic and skewed maps [22], which use a chaotic system to generate P-boxes to disrupt the pixel positions, and then encrypts the video by using the skewed map ensemble diffusion technique, providing good security. Jiang et al proposed a video encryption scheme that combines parallel computing and real-time chaos [27].…”