Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wba5/STM32WBA50/HASH/HASH_DIN#0x0
HASH data input register
Data input
Writing this register pushes the current register content into the IN FIFO, and the register takes the new value presented on the AHB databus.
Reading this register returns zeros.
https://github.com/modm-io/cmsis-svd-stm32