disco-c | tiny C cryptographic library to encrypt sessions | Cryptography library

Situation: I am working with a crypto library called embedded disco, I have a demo working on my PC but when porting it over to the MCU I get a hard fault when executing a library procedure. In the faulting code, the library is trying to simply copy the content of one strobe_s struct into another strobe_s. This is done twice: once for s1 and once for s2. For s1, the library simply assigns the dest. struct to the source struct. For s2 however, such an assign gave a hard fault. As the Cortex-M ISA requires aligned memory accesses, I reckoned that replacing the assignment with a memcpy should fix the problem. Nevertheless, simply stepping into memcpy using the debugger results in a hard fault! I.e. I have a breakpoint at the line with the memcpy and when stepping inside the fault handler is called! I have used memcpy to fix misaligned memory accesses in other parts of the code just fine...

MCU: STM32L552ZET6QU

Faulting code:

The code below is my modification of the original library code where the assignment to *s2 was replaced by a memcpy. The original code from the library's github was: