Paper Title
Design and Analysis of Advanced Encryption Standard Modes -Based Encryption for Protecting Image, PDF and Text Data

Abstract
Malware proliferation has created unbreakable encryption a necessity for secure guarding of sensitive data. This paper, discusses the effectiveness of several AES modes—Cipher Block Chaining (CBC), Electronic Codebook (ECB), Galois/Counter Mode (GCM), Output Feedback (OFB), and Counter (CTR)—in secure text and image data. The study addresses primary issues such as encryption strength, efficiency, and data integrity through comparison of modes in various contexts of encryption. The study compares such modes based on security in encryption, performance, and data integrity to decide on their appropriateness for various security needs. Moreover, key management practices are refined to improve encryption security. The study also investigates resource-aware implementations to give AES an efficiency level so that it can be implemented practically in many applications. Experimental findings confirm the effectiveness of these practices in preventing cybersecurity attacks, thus making AES a trustable building block for contemporary data protection mechanisms. Keywords - AES, Encryption, Image Security, Cryptography, Data Protection, AES Modes.