-- | A message digest produced with the SHA-256 algorithm.
dSha256 :: Lens' Digest (Maybe ByteString)
dSha256
  = lens _dSha256 (\ s a -> s{_dSha256 = a}) .
      mapping _Bytes
dSha256 :: Lens' Digest (Maybe ByteString)
dSha256
  = lens _dSha256 (\ s a -> s{_dSha256 = a}) .
      mapping _Bytes
dSha256
  = lens _dSha256 (\ s a -> s{_dSha256 = a}) .
      mapping _Bytes