Systems are utilised to securely transmit images via an untrusted channel provider, and a novel grayscale-based block scrambling image encryption algorithm is created to increase EtC system security. This method is intended to improve the security of encryption-then-compression (EtC) systems. The proposed technique, in comparison to the new encryption technology, allows for smaller block sizes and a greater number of blocks. Despite the fact that the original image has three colour channels, photos encrypted using the suggested method contain less colour information because the data is encrypted using grayscale images. These features improve security against threats such as jigsaw puzzle solvers and brute-force attacks. Aside from that, despite the fact that the encrypted photos contain no colour information, it allows for colour sub-sampling, which can enhance image compression speed. In a test, encrypted images were posted to and then downloaded from social networking sites, and the results showed that by employing advanced compression algorithms, the suggested technique is successful for ETC systems while maintaining excellent compression performance.

Event Management, image compression, non-local network, attention mechanism.