def CmAes.key256
import bend-osdev-cipher-modes@0.1.0.0/aes.bend as Aesimport Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
264def CmAes.key256(o: B.Octets) -> Result<&2, &2, M.CmError, CmAesKey>:
265 +xs = B.Octets.to_list(o)
266 aes.key.pick(Nat.is_eq(B.len(xs), 32n), xs)