Poly1305.mac: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/spec/crypto/poly1305.bend as Poly1305
Lines 120-125 of bend-collections-laws-crypto@1.0.0.0/spec/crypto/poly1305.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/poly1305.bend&start_line=120&end_line=125

import Base

# The same function, split on the message first so that a proof about an
# unknown message does not unfold it.
def mac(+key: List<&2, U32>, +msg: List<&2, U32>) -> List<&2, U32>:
  match msg:
    case Nil{}: poly1305_mac(key, [])
    case b <> rest: poly1305_mac(key, b <> rest)

Uses (3):
  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/spec/crypto/poly1305.bend&name=poly1305_mac