Secure booting validates images on devices before they execute. It has become a mandatory feature for most electronic devices deployed in the field. For encryption, AMD supports an advanced encryption standard (AES) algorithm AES encryption.
AES provides symmetric key cryptography (one key definition for both encryption and decryption). Perform the same steps to complete both encryption and decryption, in reverse order.
AES is an iterated symmetric block cipher, which means that it does the following:
- Works by repeating the same defined steps multiple times
- Uses a secret key encryption algorithm
- Operates on a fixed number of bytes