Rounds.dr_correct: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/math/random/chacha8/rounds.bend as Rounds
Lines 21-24 of bend-collections-laws-crypto@1.0.0.0/proofs/math/random/chacha8/rounds.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/math/random/chacha8/rounds.bend&start_line=21&end_line=24

import Base
import bend-collections-laws-crypto@1.0.0.0/src/math/random/chacha8/block.bend as B
import bend-collections-laws-crypto@1.0.0.0/spec/math/random/chacha8rand.bend as S

# one double round is RFC 8439's inner_block
def dr_correct(+v: B.Vector) -> {vec(B.dr(v)) == S.double_round(vec(v)) : List<&2,U32>}:
  match v:
    case B.V{a0,a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15}: {==}

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  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/proofs/math/random/chacha8/rounds.bend&name=vec
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/random/chacha8rand.bend&name=double_round
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/random/chacha8/block.bend&name=Vector
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/random/chacha8/block.bend&name=dr