Ejemplo n.º 1
0
        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);
                    }
                }
            }
        }
Ejemplo n.º 2
0
        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);
                }
            }
        }