public MessageKeys RemoveMessageKeys(IEcPublicKey senderEphemeral, uint counter)
{
Pair <StorageProtos.SessionStructure.Types.Chain, uint> chainAndIndex = GetReceiverChain(senderEphemeral);
StorageProtos.SessionStructure.Types.Chain chain = chainAndIndex.First();
if (chain == null)
{
return(null);
}
List <StorageProtos.SessionStructure.Types.Chain.Types.MessageKey> messageKeyList = new List <StorageProtos.SessionStructure.Types.Chain.Types.MessageKey>(chain.MessageKeysList);
IEnumerator <StorageProtos.SessionStructure.Types.Chain.Types.MessageKey> messageKeyIterator = messageKeyList.GetEnumerator();
MessageKeys result = null;
while (messageKeyIterator.MoveNext()) //hasNext()
{
StorageProtos.SessionStructure.Types.Chain.Types.MessageKey messageKey = messageKeyIterator.Current; // next()
if (messageKey.Index == counter)
{
result = new MessageKeys(messageKey.CipherKey.ToByteArray(),
messageKey.MacKey.ToByteArray(),
messageKey.Iv.ToByteArray(),
messageKey.Index);
messageKeyList.Remove(messageKey); //messageKeyIterator.remove();
break;
}
}
StorageProtos.SessionStructure.Types.Chain updatedChain = chain.ToBuilder().ClearMessageKeys()
.AddRangeMessageKeys(messageKeyList) // AddAllMessageKeys
.Build();
_sessionStructure = _sessionStructure.ToBuilder()
.SetReceiverChains((int)chainAndIndex.Second(), updatedChain) // TODO: conv
.Build();
return(result);
}
public void SetMessageKeys(IEcPublicKey senderEphemeral, MessageKeys messageKeys)
{
Pair <StorageProtos.SessionStructure.Types.Chain, uint> chainAndIndex = GetReceiverChain(senderEphemeral);
StorageProtos.SessionStructure.Types.Chain chain = chainAndIndex.First();
StorageProtos.SessionStructure.Types.Chain.Types.MessageKey messageKeyStructure = StorageProtos.SessionStructure.Types.Chain.Types.MessageKey.CreateBuilder()
.SetCipherKey(ByteString.CopyFrom(messageKeys.GetCipherKey() /*.getEncoded()*/))
.SetMacKey(ByteString.CopyFrom(messageKeys.GetMacKey() /*.getEncoded()*/))
.SetIndex(messageKeys.GetCounter())
.SetIv(ByteString.CopyFrom(messageKeys.GetIv() /*.getIV()*/))
.Build();
StorageProtos.SessionStructure.Types.Chain.Builder updatedChain = chain.ToBuilder().AddMessageKeys(messageKeyStructure);
if (updatedChain.MessageKeysList.Count > MaxMessageKeys)
{
updatedChain.MessageKeysList.RemoveAt(0);
}
_sessionStructure = _sessionStructure.ToBuilder()
.SetReceiverChains((int)chainAndIndex.Second(), updatedChain.Build()) // TODO: conv
.Build();
}
public bool HasMessageKeys(IEcPublicKey senderEphemeral, uint counter)
{
Pair <StorageProtos.SessionStructure.Types.Chain, uint> chainAndIndex = GetReceiverChain(senderEphemeral);
StorageProtos.SessionStructure.Types.Chain chain = chainAndIndex.First();
if (chain == null)
{
return(false);
}
IList <StorageProtos.SessionStructure.Types.Chain.Types.MessageKey> messageKeyList = chain.MessageKeysList;
foreach (StorageProtos.SessionStructure.Types.Chain.Types.MessageKey messageKey in messageKeyList)
{
if (messageKey.Index == counter)
{
return(true);
}
}
return(false);
}
