cryptsetup cipher is missing when testing with RBPI OS based on Debian 12

[bklop]

Thanks for a great guide!

I've been following this guide to get root partition encryption working on a RBPI CM4 using RBPI OS Lite 64 2023-12-11 (i.e. Debian 12 Bookworm).

Everything works until I get to the point where I want to unlock the LUKS volume from initramfs, where it fails with a missing cipher.
When I run cryptsetup benchmark -c xchacha20,aes-adiantum-plain64 (again, from initramfs) I get the same error. Obviously the ciphers are available from RBPI OS itself, and I made sure I created an updated initramfs and checked if the resulting file contains the modules with lsinitramfs . I also checked the modules folder after booting into initramfs just to be sure, and the modules algif_skcipher, adiantum etc. are present (so they have been copied).

Do you happen to have any idea what the problem could be, or have you tested your guide with Debian 12?

[bklop]

I filed an issue here instead:

RPi-Distro/repo#362