private void Network_S2SchemeSettingsChanged(SecuritySchemes scheme, bool isEnabled)
{
if (SecuritySchemeSet.ALLS2.Contains(scheme))
{
var nodeIds = _nodesMask.Where(id => id != Network.NodeId && Network.HasSecurityScheme(id, scheme)).ToList();
var selfNodeId = Network.NodeId;
foreach (var id in nodeIds)
{
var key = new InvariantPeerNodeId(selfNodeId, id);
if (ScKeys.ContainsKey(key))
{
if ((int)scheme >= (int)ScKeys[key].SecurityScheme)
{
ScKeys.Remove(key);
}
}
}
if (MpanTable != null)
{
var groups = MpanTable.SelectGroupIds(selfNodeId).Where(
groupId =>
{
var container = MpanTable.GetContainer(new NodeGroupId(selfNodeId, groupId));
if (container != null)
{
return(container.ReceiverGroupHandle.Intersect(nodeIds).Any());
}
return(false);
});
foreach (var groupId in groups)
{
var peerGroupId = new NodeGroupId(selfNodeId, groupId);
McKeys.Remove(peerGroupId);
}
}
}
}
private void FireNetworkKeyS2Changed(InvariantPeerNodeId peerNodeId, byte[] networkKey, SecuritySchemes securityScheme)
{
var mpanKey = new byte[SecurityS2Utils.KEY_SIZE];
var ccmKey = new byte[SecurityS2Utils.KEY_SIZE];
var personalization = new byte[SecurityS2Utils.PERSONALIZATION_SIZE];
if (securityScheme == SecuritySchemes.S2_TEMP)
{
SecurityS2Utils.TempKeyExpand(networkKey, ccmKey, personalization, mpanKey);
}
else
{
SecurityS2Utils.NetworkKeyExpand(networkKey, ccmKey, personalization, mpanKey);
}
switch (peerNodeId.NodeId2)
{
case 0:
for (int ii = 0; ii <= ushort.MaxValue; ii++)
{
var index = new InvariantPeerNodeId(ii);
if (ScKeys.ContainsKey(index) && !ScKeys[index].CcmKey.SequenceEqual(ccmKey) &&
ScKeys[index].SecurityScheme == securityScheme)
{
ScKeys[index].CcmKey = ccmKey;
ScKeys[index].Personalization = personalization;
if (SpanTable.GetSpanState(index) != SpanStates.ReceiversNonce)
{
SpanTable.SetNonceFree(index);
}
}
}
for (int i = 0; i <= ushort.MaxValue; i++)
{
var index = new NodeGroupId(i);
if (McKeys.ContainsKey(index) && !McKeys[index].CcmKey.SequenceEqual(ccmKey) &&
McKeys[index].SecurityScheme == securityScheme)
{
MpanTable.RemoveRecord(index);
}
}
break;
case 0xFF:
for (int ii = 0; ii <= ushort.MaxValue; ii++)
{
var i = new InvariantPeerNodeId(ii);
if (ScKeys.ContainsKey(i))
{
ScKeys[i].CcmKey = ccmKey;
ScKeys[i].Personalization = personalization;
ScKeys[i].SecurityScheme = securityScheme;
}
}
MpanTable.ClearMpanTable();
SpanTable.ClearNonceTable();
break;
default:
if (ScKeys.ContainsKey(peerNodeId))
{
ScKeys[peerNodeId].CcmKey = ccmKey;
ScKeys[peerNodeId].Personalization = personalization;
ScKeys[peerNodeId].SecurityScheme = securityScheme;
}
else
{
ScKeys.Add(peerNodeId,
new SinglecastKey
{
CcmKey = ccmKey,
Personalization = personalization,
SecurityScheme = securityScheme
});
}
if (SpanTable.GetSpanState(peerNodeId) != SpanStates.ReceiversNonce)
{
SpanTable.SetNonceFree(peerNodeId);
}
break;
}
if (IsInclusion && securityScheme == SecuritySchemes.S2_TEMP)
{
IsTempKeyActivatedOnInclusion = true;
}
if (NetworkKeyS2Changed != null)
{
NetworkKeyS2Changed(peerNodeId, networkKey, securityScheme, IsInclusion);
}
if (peerNodeId.NodeId2 == 0)
{
for (int ii = 0; ii <= ushort.MaxValue; ii++)
{
var index = new InvariantPeerNodeId(ii);
// TODO S2 if (_scKeys.ContainsKey(index) && !_scKeys[index].CcmKey.SequenceEqual(ccmKey) && _scKeys[index].SecurityScheme == securityScheme)
{
RetransmissionTableS2.Clear();
}
}
}
else if (peerNodeId.NodeId2 == 0xFF)
{
RetransmissionTableS2.Clear();
}
else
{
if (RetransmissionTableS2.ContainsKey(peerNodeId))
{
RetransmissionTableS2.Remove(peerNodeId);
}
}
}