def m64.iv
import bend-osdev-cipher-core@0.1.0.0/modes64.bend as Modes64import Base
import bend-osdev-cipher-core@0.1.0.0/cipher_core.bend as L
131def m64.iv(m: Maybe<&2, L.LcBlock64>, +n: Nat) -> Result<&2, &2, L.LcError, L.LcBlock64>:
132 match m:
133 case None{}:
134 Fail{L.LcBadIvLength{n}}
135 case Some{b}:
136 Done{b}