Design and implementation of a security system algorithm based on the combination of improved AES and SHA-512

With the rapid development of information technology, network security has become an increasingly important focus. As a key means to protect data security, encryption technology is crucial to enhance its security. However, a single encryption technology often has limitations. This study proposes a secure encryption system that combines Advanced Encryption Standard (AES) and Secure Hash Algorithm (SHA-512). It introduces the design concept and implementation method of the encryption scheme combining the two algorithms in detail, and conducts an in-depth analysis and evaluation of the system's security. Experimental results show that the system provides high security performance and excellent performance indicators.