Stream.bytes_length: law of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/chacha/stream.bend as Stream
Lines 151-154 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/chacha/stream.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/chacha/stream.bend&start_line=151&end_line=154

import Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/chacha/core.bend as C

# 64 keystream bytes.
law bytes_length:
  for +s: C.State
  {List.length(&2, U32, C.bytes(s)) == 64n : Nat}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.length
  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/src/crypto/chacha/core.bend&name=State
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/chacha/core.bend&name=bytes