Twofish.LcTwofish.key: def of bend-osdev-legacy-ciphers@0.1.0.0
Import: import bend-osdev-legacy-ciphers@0.1.0.0/twofish.bend as Twofish
Lines 339-343 of bend-osdev-legacy-ciphers@0.1.0.0/twofish.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/twofish.bend&start_line=339&end_line=343

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend as L

# a 16-, 24- or 32-byte key (Twofish-128, -192, -256, by its length)
def LcTwofish.key(o: B.Octets) -> Result<&2, &2, L.LcError, LcTwofishKey>:
  +xs = B.Octets.to_list(o)
  +n = B.len(xs)
  tf.key.pick(Nat.is_eq(n, 16n), Nat.is_eq(n, 24n), Nat.is_eq(n, 32n), xs)

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets.to_list
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=len
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend&name=LcError
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/twofish.bend&name=LcTwofishKey
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/twofish.bend&name=tf.key.pick