private void TranslateEncryptionKey(ref WLANConfiguration config, string key, AuthenticationMode authMode, WEPStatus privacyMode)
{
if (privacyMode == WEPStatus.WEPEnabled)
{
if ((key.Length != 10) && (key.Length != 26))
{
throw new ArgumentException("The encryption key for WEP must be either 10 or 26 characters");
}
byte[] keyMaterial = HexStringToBytes(key);
config.KeyMaterial = keyMaterial;
config.CtlFlags |= WZCControl.WEPKPresent | WZCControl.WEPKXFormat;
if (key.Length == 10)
{
config.CtlFlags |= WZCControl.WEPK40Bit;
}
config.KeyMaterial = EncryptKeyMaterial(keyMaterial);
}
else if ((privacyMode == WEPStatus.AESEnabled) || (privacyMode == WEPStatus.TKIPEnabled))
{
config.KeyLength = key.Length;
if ((config.KeyLength < 8) || (config.KeyLength > 63))
{
throw new ArgumentException("The encryption key for WPA-PSK/TKIP must be either between 8 and 63");
}
WZC.WZCPassword2Key(ref config, key);
config.CtlFlags |= WZCControl.WEPKPresent | WZCControl.WEPKXFormat | WZCControl.ONEXEnabled;
config.WPAMCastCipher = (int)WEPStatus.TKIPEnabled;
config.KeyMaterial = EncryptKeyMaterial(config.KeyMaterial);
}
}
/// <summary>
/// The ProcessKey routine makes necessary modifications
/// to the key material of a WPA key before it is passed
/// to WZC routines. The processing done to it depends
/// on how it was generated.
/// </summary>
/// <param name="kt">
/// The key type, indicating how the key material in
/// the structure was originally generated
/// </param>
/// <param name="config">
/// The configuration being changed
/// </param>
/// <param name="passphrase">
/// For WPA-PSK passphrase type, the passphrase.
/// </param>
internal void ProcessKey(KeyType kt, ref WLANConfiguration config,
string passphrase)
{
// Define fake key material for 'encrypting' the
// keys.
byte[] chFakeKeyMaterial = new byte[] { 0x56, 0x09, 0x08, 0x98, 0x4D, 0x08, 0x11, 0x66, 0x42, 0x03, 0x01, 0x67, 0x66 };
byte[] key;
uint i;
switch (kt)
{
case KeyType.WPAPassphrase:
// We set this explicitly here. It was set
// out of line in the NetUI code.
config.Privacy = WEPStatus.TKIPEnabled;
config.KeyLength = WLANConfiguration.WZCCTL_MAX_WEPK_MATERIAL;
config.CtlFlags |= WZCControl.WEPKXFormat | WZCControl.ONEXEnabled | WZCControl.WEPKPresent;
WZC.WZCPassword2Key(ref config, passphrase);
// Note that, since the config structure doesn't
// actually have a byte[] for key material, we
// can't modify bytes of that 'array' in-place.
key = config.KeyMaterial;
for (i = 0; i < WLANConfiguration.WZCCTL_MAX_WEPK_MATERIAL; i++)
{
key[i] ^= chFakeKeyMaterial[(7 * i) % 13];
}
config.KeyMaterial = key;
config.EapolParams.EapFlags = EAPFlags.Enabled;
config.EapolParams.EapType = EAPType.TLS;
config.EapolParams.Enable8021x = true;
// config.WPAMCastCipher = Ndis802_11Encryption2Enabled;
break;
case KeyType.WPABinary:
// We set this explicitly here. It was set
// out of line in the NetUI code.
config.Privacy = WEPStatus.TKIPEnabled;
config.KeyLength = WLANConfiguration.WZCCTL_MAX_WEPK_MATERIAL;
config.CtlFlags |= WZCControl.WEPKPresent;
// Note that, since the config structure doesn't
// actually have a byte[] for key material, we
// can't modify bytes of that 'array' in-place.
key = config.KeyMaterial;
for (i = 0; i < WLANConfiguration.WZCCTL_MAX_WEPK_MATERIAL; i++)
{
config.KeyMaterial[i] ^= chFakeKeyMaterial[(7 * i) % 13];
}
config.KeyMaterial = key;
config.EapolParams.EapFlags = EAPFlags.Enabled;
config.EapolParams.EapType = EAPType.TLS;
config.EapolParams.Enable8021x = true;
// config.WPAMCastCipher = Ndis802_11Encryption2Enabled;
break;
}
}
