Modified AES-128 with Boundary-Based Splitting and Dynamic Output Encryption

Encryption is essential for maintaining the confidentiality, integrity, and authenticity of data in today’s digital landscape. As cyber threats continue to escalate, the implementation of effective encryption techniques has become crucial for protecting sensitive information from unauthorized access and preventing data breaches.  Encryption is utilized across multiple domains, such as securing data transmission, protecting file storage, enhancing email security, enabling secure messaging, safeguarding databases, verifying authentication, ensuring blockchain integrity, complying with regulations, securing IoT devices, and creating digital signatures to protect sensitive information and maintain privacy. The Advanced Encryption Standard (AES) is crucial for ensuring strong security, widespread adoption, efficiency in implementation, scalability with varying key lengths, versatility across applications, resistance to attacks, compliance with regulations, and facilitating secure global communication. AES is used in various applications, including secure data transmission, file encryption, virtual private networks (VPNs), secure web browsing (HTTPS), disk encryption, and protecting sensitive information in cloud storage and databases. This paper introduces a modified version of the Advanced Encryption Standard (AES) aimed at bolstering security beyond that of traditional AES. While AES is well-regarded for its strength, our enhanced approach integrates additional encryption layers and an innovative key management strategy, significantly boosting resilience against various cryptographic threats. We assess the performance and security attributes of the modified AES through Avalanche Effect Encryption Decryption time and throughput. Our findings indicate that this improved algorithm provides greater protection for sensitive data.