Thanks for your answer @tparys. Maybe my first post was misunderstanding, but the problem exists for both boards (rockchip64 and sunxi), while the older version of the kernel (5.10.16-rockchip64 and 5.10.16-sunxi) works with luksOpening the LUKS-drive and newer kernels on both platforms up to 5.10.43 do not work ("No key available with this passphrase"). I will check back concerning the missing of a hash function, but I did not encounter any problems since working with the newer kernels concerning hash functions.