请问这个是怎么实现的啊？RISC-V里面可以实现吗？

orientview

On-the-fly decryption engine (OTFDEC) The embedded OTFDEC decrypts in real-time the encrypted content stored in the externalOcto-SPI memories used in Memory-mapped mode.
The OTFDEC uses the AES-128 algorithm in counter mode (CTR).Code execution on external Octo-SPI memories can be protected against fault injectionthanks toSTMicroelectronics enhanced encryption mode (refer to RM0468 for details).

fhy420462303

加密算法吧 自己百度一些AES算法以及基于AES-CTR的加密算法就知道怎么回事了