Proof.rejects: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/mac/proof.bend as Proof
Lines 31-36 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/mac/proof.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/mac/proof.bend&start_line=31&end_line=36

import Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/mac.bend as MAC
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/mac/laws.bend as Laws

def rejects(+key: List<&2, U32>, +msg: List<&2, U32>, +tag: List<&2, U32>, ne: {tag != MAC.sign(key, msg) : List<&2, U32>}, +b: Bool, +eb: {MAC.verify(key, msg, tag) == b : Bool}) -> {MAC.verify(key, msg, tag) == False{} : Bool}:
  match b:
    case True{}:
      Empty.absurd({MAC.verify(key, msg, tag) == False{} : Bool}, ne(Laws.Verify.sound(key, msg, tag, eb)))
    case False{}:
      eb

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Empty
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Empty.absurd
  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/crypto/mac/laws.bend&name=Verify.sound
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/mac.bend&name=sign
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/mac.bend&name=verify