LAWS.rc4_empty_key: law of bend-osdev-crypto@0.1.0.0
Import: import bend-osdev-crypto@0.1.0.0/LAWS.bend as LAWS
Lines 347-351 of bend-osdev-crypto@0.1.0.0/LAWS.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-crypto@0.1.0.0/LAWS.bend&start_line=347&end_line=351

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-legacy-ciphers@0.1.0.0/rc4.bend as R
import bend-osdev-crypto@0.1.0.0/crypto.bend as Cr
import bend-osdev-crypto@0.1.0.0/inst_rc4.bend as RC

# refusals: an RC4 key of 0 bytes, an IV given to RC4, a CTR counter block
# of the wrong length, bytes that are not whole blocks, and an HKDF output
# longer than 255 digests
law rc4_empty_key:
  {Result.map(&2, &2, Cr.CrError, R.LcRc4State, Unit, s => Unit{}, RC.CrRc4.start(B.Octets.empty(), B.Octets.empty())) == Fail{Cr.CrBadKeyLength{0n}} : Result<&2, &2, Cr.CrError, Unit>}

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result.map
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets.empty
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/crypto.bend&name=CrError
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/inst_rc4.bend&name=CrRc4.start
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/rc4.bend&name=LcRc4State