An enhanced symmetric key algorithm for information security using advanced encryption

This work presents an enhanced symmetric key encryption algorithm that improves security, efficiency, and practicality. The proposed approach utilizes AES-GCM (Galois/Counter Mode) with a 256-bit key, derived from a 512-bit key using a cryptographic key derivation function. This method enhances resistance against various security threats while maintaining the integrity and speed of AES-GCM. A new internal key-generation mechanism enables the receiver to derive the decryption key from a shared key seed, without requiring the actual key to be sent across the channel —a risk in traditional symmetric encryption methods. When implemented and tested on large datasets, the algorithm outperforms traditional symmetric encryption methods while maintaining low computational complexity. The performance results indicate improved processing speed and scalability, making it suitable for real-world applications that require secure, efficient data encryption. As such, this research presents a scalable solution for addressing the challenges of working with large amounts of data in the modern environment by combining enhanced security with practical efficiency. The proposed algorithm offers a balanced cryptographic solution.