code: def signature_unsafe(m: bytes, sk: bytes, pk: bytes) -> bytes:
      
      h = H(sk)
      a = decodecoord(h)
      r = Hint(h[b // 8 : b // 4] + m)
      R = scalarmult_B(r)
      S = (r + Hint(encodepoint(R) + pk + m) * a) % l
      return encodepoint(R) + encodeint(S)
docs: Not safe to use with secret keys or secret data.
  
      See module docstring.  This function should be used for testing only.