Lena Boeckmann

I removed it, because this branch only provides the PSA Module without backend support. I submitted the code for the wrappers for the RIOT cipher module, etc, in separate PRs,...

> Why not keep the [example application](https://github.com/RIOT-OS/RIOT/pull/18547/files#diff-edf4d5035cbd679391b0a75780e303c0deb2743654585cf6ccf99ae59f6909ee) from #18547 ? It was providing a way for Murdock to build (and test) the code of this PR. I added a minimal...

Thank you, Kevin. I think from that perspective it makes more sense to keep everything in one PR with separate commits. I will apply all the changes I made on...

To make this easier to test and work on are going to keep working on the original branch: https://github.com/RIOT-OS/RIOT/pull/18547

For multiplexing different sources, the mbedTLS entropy module could be an option (#15671). As a source of randomness on boards without a HWRNG, `puf_sram` can be used (like @maribu said).

@mguetschow thank you for the nice and detailed feedback! I didn't finish everything today, but I'm working on it =)

> Just a small comment: Could you maybe avoid rebasing before pushing the changes so that Github can show me a nice diff of the actual new changes? Sorry, I...

> Hey, short question: Why does this only work on the nrf52840dk and native ? As Mikolai said, it *should* work with Boards that support MTD. I just haven't tested...

> Thanks for cleaning this up! > > For some reason, Github doesn't let me comment on the lines directly, but in several `main.c` files, you still have > >...

> Why did this PR got stuck? What do you need to move this forward @Einhornhool ? I did not get a notification that it has been reviewed and forgot...