/// <summary>
/// Adds a Pairwise Master Key (PMK) to the access point with the specified BSSID.
/// In WPA2, the PMK is derived from the access point BSSID and password and used to
/// create other keys used in encryption.
/// </summary>
/// <param name="bssid">The BSSID of the access point.</param>
/// <param name="ssid">The SSID of the access point.</param>
/// <param name="password">The password of the access point.</param>
public void AddPassword(PhysicalAddress bssid, string ssid, string password)
{
byte[] pmk =
WPA2CryptographyTools.GeneratePairwiseMasterKey(password, ssid);
if (AccessPoints.ContainsKey(bssid) == false)
{
AccessPoints[bssid] = new AccessPoint(bssid);
}
AccessPoints[bssid].PairwiseMasterKey = pmk;
}
/// <summary>
/// Gets the destination and source of a PacketDotNet IEEE 802.11 DataFrame.
/// The destination and source are determined by the return value. <br />
/// If no access point or station with MAC addresses matching those in the dataFrame
/// are found in the existing network graph, then the corresponding access point and
/// station are added to the graph.
/// </summary>
/// <param name="dataFrame">The frame whose destination and source to get.</param>
/// <param name="accessPoint">The access point to or from which the message is sent.</param>
/// <param name="station">The station to or from which the message is sent.</param>
/// <returns>True, if the access point is the destination. Otherwise, false.</returns>
public bool GetDestinationAndSource(
DataFrame dataFrame,
out AccessPoint accessPoint,
out Station station)
{
PhysicalAddress bssid = dataFrame.BssId;
PhysicalAddress destAddress = dataFrame.DestinationAddress;
PhysicalAddress sourceAddress = dataFrame.SourceAddress;
if (AccessPoints.TryGetValue(bssid, out accessPoint) == false)
{
accessPoint = new AccessPoint(bssid);
AccessPoints[bssid] = accessPoint;
}
if (Stations.TryGetValue(destAddress, out station))
{
return(false);
}
else if (Stations.TryGetValue(sourceAddress, out station))
{
return(true);
}
else
{
station = new Station();
if ((dataFrame.FrameControl.ToDS == true) &&
(dataFrame.FrameControl.FromDS == false))
{
Stations[sourceAddress] = station;
return(true);
}
else
{
Stations[destAddress] = station;
return(false);
}
}
}
