Cryptography: Symmetric Key Encryption Algorithms and Their Role in Modern Data Security

Abstract

This paper explores symmetric key encryption algorithms and their critical role in ensuring the security of digital information in modern communication systems. Symmetric encryption, where the same key is used for both encryption and decryption, is a foundational technique in data protection, used in various industries such as banking, healthcare, and government. We will examine well-known algorithms like AES and DES, their applications, strengths, vulnerabilities, and evolving role in the face of new technological challenges.