def CmAes.key

bend-osdev-cipher-modes@0.1.0.0 · aes.bend:254

import 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

254# a 16-byte (AES-128) or 32-byte (AES-256) key
255def CmAes.key(o: B.Octets) -> Result<&2, &2, M.CmError, CmAesKey>:
256  +xs = B.Octets.to_list(o)
257  +n = B.len(xs)
258  aes.key.pick(Bool.or(Nat.is_eq(n, 16n), Nat.is_eq(n, 32n)), xs)