Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/RCC/RCC_AHB3ENSR#0x0
RCC AHB3 enable register
RNG enable
HASH enable
CRYP enable
SAES enable
PKA enable
RIFSC enable
IAC enable
RISAF enable
https://github.com/modm-io/cmsis-svd-stm32