public PreKeySignalMessage(uint messageVersion, uint registrationId, May <uint> preKeyId,
uint signedPreKeyId, IEcPublicKey baseKey, IdentityKey identityKey,
SignalMessage message)
{
_version = messageVersion;
_registrationId = registrationId;
_preKeyId = preKeyId;
_signedPreKeyId = signedPreKeyId;
_baseKey = baseKey;
_identityKey = identityKey;
_message = message;
PreKeySignalMessage preKeySignalMessage = new PreKeySignalMessage
{
SignedPreKeyId = signedPreKeyId,
BaseKey = ByteString.CopyFrom(baseKey.Serialize()),
IdentityKey = ByteString.CopyFrom(identityKey.Serialize()),
Message = ByteString.CopyFrom(message.Serialize()),
RegistrationId = registrationId
};
if (preKeyId.HasValue) // .isPresent()
{
preKeySignalMessage.PreKeyId = preKeyId.ForceGetValue(); // get()
}
byte[] versionBytes = { ByteUtil.IntsToByteHighAndLow((int)_version, (int)CurrentVersion) };
byte[] messageBytes = preKeySignalMessage.ToByteArray();
_serialized = ByteUtil.Combine(versionBytes, messageBytes);
}
public PreKeySignalMessage(byte[] serialized)
{
try
{
_version = (uint)ByteUtil.HighBitsToInt(serialized[0]);
if (_version > CurrentVersion)
{
throw new InvalidVersionException("Unknown version: " + _version);
}
if (_version < CurrentVersion)
{
throw new LegacyMessageException("Legacy version: " + _version);
}
PreKeySignalMessage preKeySignalMessage = Parser.ParseFrom(ByteString.CopyFrom(serialized, 1, serialized.Length - 1));
if (
preKeySignalMessage.SignedPreKeyIdOneofCase == SignedPreKeyIdOneofOneofCase.None ||
preKeySignalMessage.BaseKeyOneofCase == BaseKeyOneofOneofCase.None ||
preKeySignalMessage.BaseKeyOneofCase == BaseKeyOneofOneofCase.None ||
preKeySignalMessage.MessageOneofCase == MessageOneofOneofCase.None)
{
throw new InvalidMessageException("Incomplete message.");
}
_serialized = serialized;
_registrationId = preKeySignalMessage.RegistrationId;
_preKeyId = preKeySignalMessage.PreKeyIdOneofCase == PreKeyIdOneofOneofCase.PreKeyId ? new May <uint>(preKeySignalMessage.PreKeyId) : May <uint> .NoValue;
_signedPreKeyId = preKeySignalMessage.SignedPreKeyIdOneofCase == SignedPreKeyIdOneofOneofCase.SignedPreKeyId ? preKeySignalMessage.SignedPreKeyId : uint.MaxValue; // -1
_baseKey = Curve.DecodePoint(preKeySignalMessage.BaseKey.ToByteArray(), 0);
_identityKey = new IdentityKey(Curve.DecodePoint(preKeySignalMessage.IdentityKey.ToByteArray(), 0));
_message = new SignalMessage(preKeySignalMessage.Message.ToByteArray());
}
catch (Exception e)
{
//(InvalidProtocolBufferException | InvalidKeyException | LegacyMessage
throw new InvalidMessageException(e.Message);
}
}
