def ad.ae.key
import bend-osdev-aead@0.1.0.0/aegis128.bend as Aegis128import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-crypto@0.1.0.0/crypto.bend as Cr
234def ad.ae.key(+o: B.Octets) -> Result<&2, &2, Cr.CrError, AdAegisKey>:
235 ad.ae.key.pick(Nat.is_eq(B.Octets.len(o), 16n), o)