public SignalMessage(byte[] serialized)
{
try
{
byte[][] messageParts = ByteUtil.Split(serialized, 1, serialized.Length - 1 - MacLength, MacLength);
byte version = messageParts[0][0];
byte[] message = messageParts[1];
byte[] mac = messageParts[2];
if (ByteUtil.HighBitsToInt(version) <= UnsupportedVersion)
{
throw new LegacyMessageException("Legacy message: " + ByteUtil.HighBitsToInt(version));
}
if (ByteUtil.HighBitsToInt(version) > CurrentVersion)
{
throw new InvalidMessageException("Unknown version: " + ByteUtil.HighBitsToInt(version));
}
WhisperProtos.SignalMessage signalMessage = WhisperProtos.SignalMessage.ParseFrom(message);
if (!signalMessage.HasCiphertext ||
!signalMessage.HasCounter ||
!signalMessage.HasRatchetKey)
{
throw new InvalidMessageException("Incomplete message.");
}
_serialized = serialized;
_senderRatchetKey = Curve.DecodePoint(signalMessage.RatchetKey.ToByteArray(), 0);
_messageVersion = (uint)ByteUtil.HighBitsToInt(version);
_counter = signalMessage.Counter;
_previousCounter = signalMessage.PreviousCounter;
_ciphertext = signalMessage.Ciphertext.ToByteArray();
}
catch (/*InvalidProtocolBufferException | InvalidKeyException | Parse*/ Exception e)
{
throw new InvalidMessageException(e);
}
}
public SignalMessage(byte[] serialized)
{
try
{
byte[][] messageParts = ByteUtil.split(serialized, 1, serialized.Length - 1 - MAC_LENGTH, MAC_LENGTH);
byte version = messageParts[0][0];
byte[] message = messageParts[1];
byte[] mac = messageParts[2];
if (ByteUtil.highBitsToInt(version) <= CiphertextMessage.UNSUPPORTED_VERSION)
{
throw new LegacyMessageException("Legacy message: " + ByteUtil.highBitsToInt(version));
}
if (ByteUtil.highBitsToInt(version) > CURRENT_VERSION)
{
throw new InvalidMessageException("Unknown version: " + ByteUtil.highBitsToInt(version));
}
WhisperProtos.SignalMessage SignalMessage = WhisperProtos.SignalMessage.ParseFrom(message);
if (!SignalMessage.HasCiphertext ||
!SignalMessage.HasCounter ||
!SignalMessage.HasRatchetKey)
{
throw new InvalidMessageException("Incomplete message.");
}
this.serialized = serialized;
this.senderRatchetKey = Curve.decodePoint(SignalMessage.RatchetKey.ToByteArray(), 0);
this.messageVersion = (uint)ByteUtil.highBitsToInt(version);
this.counter = SignalMessage.Counter;
this.previousCounter = SignalMessage.PreviousCounter;
this.ciphertext = SignalMessage.Ciphertext.ToByteArray();
}
catch (/*InvalidProtocolBufferException | InvalidKeyException | Parse*/ Exception e)
{
throw new InvalidMessageException(e);
}
}
