Chacha20poly1305.add16_sub: law of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/aead/chacha20poly1305.bend as Chacha20poly1305
Lines 225-227 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/aead/chacha20poly1305.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/aead/chacha20poly1305.bend&start_line=225&end_line=227

import Base

law add16_sub:
  for +a: Nat
  {Nat.sub(Nat.add(a, 16n), 16n) == a : Nat}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.sub
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/lib/nat.bend&name=add_comm
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/lib/nat.bend&name=sub_zero