public PreKeySignalMessage(uint messageVersion, uint registrationId, May <uint> preKeyId,
uint signedPreKeyId, ECPublicKey baseKey, IdentityKey identityKey,
SignalMessage message)
{
this.version = messageVersion;
this.registrationId = registrationId;
this.preKeyId = preKeyId;
this.signedPreKeyId = signedPreKeyId;
this.baseKey = baseKey;
this.identityKey = identityKey;
this.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)this.version, (int)CURRENT_VERSION) };
byte[] messageBytes = preKeySignalMessage.ToByteArray();
this.serialized = ByteUtil.combine(versionBytes, messageBytes);
}
public PreKeySignalMessage(byte[] serialized)
{
try
{
this.version = (uint)ByteUtil.highBitsToInt(serialized[0]);
if (this.version > CiphertextMessage.CURRENT_VERSION)
{
throw new InvalidVersionException("Unknown version: " + this.version);
}
if (this.version < CiphertextMessage.CURRENT_VERSION)
{
throw new LegacyMessageException("Legacy version: " + this.version);
}
PreKeySignalMessage 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.");
}
this.serialized = serialized;
this.registrationId = preKeySignalMessage.RegistrationId;
this.preKeyId = preKeySignalMessage.PreKeyIdOneofCase == PreKeyIdOneofOneofCase.PreKeyId ? new May <uint>(preKeySignalMessage.PreKeyId) : May <uint> .NoValue;
this.signedPreKeyId = preKeySignalMessage.SignedPreKeyIdOneofCase == SignedPreKeyIdOneofOneofCase.SignedPreKeyId ? preKeySignalMessage.SignedPreKeyId : uint.MaxValue; // -1
this.baseKey = Curve.decodePoint(preKeySignalMessage.BaseKey.ToByteArray(), 0);
this.identityKey = new IdentityKey(Curve.decodePoint(preKeySignalMessage.IdentityKey.ToByteArray(), 0));
this.message = new SignalMessage(preKeySignalMessage.Message.ToByteArray());
}
catch (Exception e)
{
//(InvalidProtocolBufferException | InvalidKeyException | LegacyMessage
throw new InvalidMessageException(e.Message);
}
}