public void SetSenderChainKey(ChainKey nextChainKey)
{
SessionStructure.Types.Chain.Types.ChainKey chainKey = new SessionStructure.Types.Chain.Types.ChainKey
{
Key = ByteString.CopyFrom(nextChainKey.GetKey()),
Index = nextChainKey.GetIndex()
};
_sessionStructure.SenderChain.ChainKey = chainKey;
}
public void SetReceiverChainKey(IEcPublicKey senderEphemeral, ChainKey chainKey)
{
Pair <SessionStructure.Types.Chain, uint> chainAndIndex = GetReceiverChain(senderEphemeral);
SessionStructure.Types.Chain chain = chainAndIndex.First();
SessionStructure.Types.Chain.Types.ChainKey chainKeyStructure = new SessionStructure.Types.Chain.Types.ChainKey
{
Key = ByteString.CopyFrom(chainKey.GetKey()),
Index = chainKey.GetIndex()
};
chain.ChainKey = chainKeyStructure;
_sessionStructure.ReceiverChains[(int)chainAndIndex.Second()] = chain;
}
public void SetSenderChain(EcKeyPair senderRatchetKeyPair, ChainKey chainKey)
{
SessionStructure.Types.Chain.Types.ChainKey chainKeyStructure = new SessionStructure.Types.Chain.Types.ChainKey
{
Key = ByteString.CopyFrom(chainKey.GetKey()),
Index = chainKey.GetIndex()
};
SessionStructure.Types.Chain senderChain = new SessionStructure.Types.Chain
{
SenderRatchetKey = ByteString.CopyFrom(senderRatchetKeyPair.GetPublicKey().Serialize()),
SenderRatchetKeyPrivate = ByteString.CopyFrom(senderRatchetKeyPair.GetPrivateKey().Serialize()),
ChainKey = chainKeyStructure
};
_sessionStructure.SenderChain = senderChain;
}
public void AddReceiverChain(IEcPublicKey senderRatchetKey, ChainKey chainKey)
{
SessionStructure.Types.Chain.Types.ChainKey chainKeyStructure = new SessionStructure.Types.Chain.Types.ChainKey
{
Key = ByteString.CopyFrom(chainKey.GetKey()),
Index = chainKey.GetIndex()
};
SessionStructure.Types.Chain chain = new SessionStructure.Types.Chain
{
ChainKey = chainKeyStructure,
SenderRatchetKey = ByteString.CopyFrom(senderRatchetKey.Serialize())
};
_sessionStructure.ReceiverChains.Add(chain);
while (_sessionStructure.ReceiverChains.Count > 5)
{
_sessionStructure.ReceiverChains.RemoveAt(0); //TODO why was here a TODO?
}
}
public ChainKey GetSenderChainKey()
{
SessionStructure.Types.Chain.Types.ChainKey chainKeyStructure = _sessionStructure.SenderChain.ChainKey;
return(new ChainKey(Hkdf.CreateFor(GetSessionVersion()),
chainKeyStructure.Key.ToByteArray(), chainKeyStructure.Index));
}