I have this working on a stmicroF427 part and I am trying to run the same code on a STmicroF103. The only changes are that I used the M3 versions of the library on the F103 part, and the 427 system uses cube and the HAL libraries. The code running on the 103 does not generate a correct digest. I have verified that the data is good (there is a CRC also). Can someone verify that this does work on the F103 part and that there are no setup steps that I may need to do to run this?