SECURE IMAGE ENCRYPTION AND TRANSMISSION USING AES AND BASE64 ENCODING: PERFORMANCE AND SIZE ANALYSIS

Abstract

This study explores the implementation of AES encryption combined with Base64 encoding for secure data transmission, focusing on the encryption and encoding of pixel data from 10 images, each with a resolution of 100 x 100 pixels. The research measures encryption time, encoding time, and the size changes after encryption and encoding. Results show that the encryption time for the images ranged from 11 to 14 milliseconds, while the Base64 encoding time varied between 4 and 6 milliseconds. The encrypted image sizes slightly increased due to padding, while Base64 encoding resulted in a 34-36% increase in the overall data size. The graph illustrates the relationship between encryption time, encoding time, and size growth, demonstrating consistent performance across all images. Despite the size increase from Base64 encoding, the method provides significant benefits in facilitating the transmission of encrypted data through text-based protocols. This combination of AES and Base64 offers a robust and efficient solution for ensuring data security and integrity during transmission, while maintaining manageable performance and scalability for a variety of applications.