public SenderKeyDistributionMessage(byte[] serialized)
{
try
{
byte[][] messageParts = ByteUtil.split(serialized, 1, serialized.Length - 1);
byte version = messageParts[0][0];
byte[] message = messageParts[1];
if (ByteUtil.highBitsToInt(version) < CiphertextMessage.CURRENT_VERSION)
{
throw new LegacyMessageException("Legacy message: " + ByteUtil.highBitsToInt(version));
}
if (ByteUtil.highBitsToInt(version) > CURRENT_VERSION)
{
throw new InvalidMessageException("Unknown version: " + ByteUtil.highBitsToInt(version));
}
WhisperProtos.SenderKeyDistributionMessage distributionMessage = WhisperProtos.SenderKeyDistributionMessage.ParseFrom(message);
if (!distributionMessage.HasId ||
!distributionMessage.HasIteration ||
!distributionMessage.HasChainKey ||
!distributionMessage.HasSigningKey)
{
throw new InvalidMessageException("Incomplete message.");
}
this.serialized = serialized;
this.id = distributionMessage.Id;
this.iteration = distributionMessage.Iteration;
this.chainKey = distributionMessage.ChainKey.ToByteArray();
this.signatureKey = Curve.decodePoint(distributionMessage.SigningKey.ToByteArray(), 0);
}
catch (Exception e)
{
//InvalidProtocolBufferException | InvalidKey
throw new InvalidMessageException(e);
}
}
public SenderKeyDistributionMessage(UInt32 id, UInt32 iteration, byte[] chainKey, ECPublicKey signatureKey)
{
byte[] version = { ByteUtil.IntsToByteHighAndLow(CURRENT_VERSION, CURRENT_VERSION) };
var protobufObject = new WhisperProtos.SenderKeyDistributionMessage {
id = id,
iteration = iteration,
chainKey = chainKey,
signingKey = signatureKey.Serialize()
};
byte[] protobuf;
using(var stream = new MemoryStream())
{
Serializer.Serialize<WhisperProtos.SenderKeyDistributionMessage>(stream, protobufObject);
protobuf = stream.ToArray();
}
Id = id;
Iteration = iteration;
ChainKey = chainKey;
SignatureKey = signatureKey;
_serialized = ByteUtil.Combine(version, protobuf);
}
