AES (Advanced Encryption Standard) is a hardware-based and real-time encryption method that has no negative impact on performance. It is a symmetric block cipher used for data encryption and decryption. The SSD controller is equipped with an integrated AES encryption module, enabling external applications to access the module through parameters to perform data encryption and decryption. In AES, data is divided into 128-bit blocks, and the encryption process uses a 256-bit key, known as AES 256-bit hardware encryption.