decodeThenDecrypt method

Future<String> decodeThenDecrypt(String key, String base64nonce, String base64mac, String base64Text, int payloadLength,)

Implementation

Future<String> decodeThenDecrypt(String key, String base64nonce,
    String base64mac, String base64Text, int payloadLength) async {
  Scp.getInstance().log('Nonce: $base64nonce');
  Scp.getInstance().log('base64mac: $base64mac');
  Scp.getInstance().log('base64Text: $base64Text');
  List<int> decodedKey = utf8.encode(key);
  List<int> decodedNonce = base64.decode(base64nonce);
  List<int> decodedText = base64.decode(base64Text);
  List<int> decodedMac = base64.decode(base64mac);
  Scp.getInstance().log('Text length: ${decodedText.length}');
  Scp.getInstance().log('Text length: $payloadLength');
  while (decodedText.length <= payloadLength) {
    decodedText.add(0);
  }
  Scp.getInstance().log('Decoded combined: $decodedText');
  return await decryptMessage(
      decodedKey, decodedNonce, decodedMac, decodedText);
}