Sound.prefix_suffix: law of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/aead/sound.bend as Sound
Lines 40-43 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/aead/sound.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/aead/sound.bend&start_line=40&end_line=43

import Base
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/chacha.bend as RC

law prefix_suffix:
  for +n: Nat
  for +xs: List<&2, U32>
  {List.append(&2, U32, RC.prefix(n, xs), RC.suffix(n, xs)) == xs : List<&2, U32>}

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.cong
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.append
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/chacha.bend&name=prefix
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/chacha.bend&name=suffix