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OID_DOT11_ENABLED_UNICAST_CIPHER_ALGORITHM (Compact 2013)

  • Статья

3/26/2014

When set, the OID**_DOT11_ENABLED_UNICAST_CIPHER_ALGORITHM** object identifier (OID) requests that the miniport driver set the value of the Extensible Station (ExtSTA) msDot11EnabledUnicastCipherAlgo management information base (MIB) object to the specified data.

When queried, this OID requests that the miniport driver return the value of the msDot11EnabledUnicastCipherAlgo MIB object.

The msDot11EnabledUnicastCipherAlgo MIB object specifies the list of unicast cipher algorithms that the 802.11 station enables for use when it connects to a basic service set (BSS) network. After OID_DOT11_CONNECT_REQUEST is set, the 802.11 station will try to connect to a BSS whose 802.11 Beacon or Probe Response frames specify support for a unicast cipher algorithm defined by an entry within the msDot11EnabledUnicastCipherAlgo MIB object.

Note

Support for OID_DOT11_ENABLED_UNICAST_CIPHER_ALGORITHM is mandatory if the 802.11 station supports unicast cipher algorithms. The miniport driver returns a list of supported unicast cipher algorithms when OID_DOT11_SUPPORTED_UNICAST_ALGORITHM_PAIR is queried.

The data type for this OID is the DOT11_CIPHER_ALGORITHM_LIST structure.

When OID_DOT11_ENABLED_UNICAST_CIPHER_ALGORITHM is set, the miniport driver must do the following:

  • The msDot11EnabledUnicastCipherAlgo MIB object must contain at least one entry. If the uNumOfEntries member of the DOT11_CIPHER_ALGORITHM_LIST structure is set to zero, the miniport driver must fail the set request by returning NDIS_STATUS_INVALID_DATA from its MiniportOidRequest function.
  • If the 802.11 station does not support a specified unicast cipher algorithm, return NDIS_STATUS_INVALID_DATA from its MiniportOidRequest function.
  • If the 802.11 station does not support any specified unicast cipher algorithms for any enabled authentication algorithm that is defined by the ExtSTA msDot11EnabledAuthAlgo MIB object, return NDIS_STATUS_INVALID_DATA from its MiniportOidRequest function.

For more information about the msDot11EnabledAuthAlgo MIB object, see OID_DOT11_ENABLED_AUTHENTICATION_ALGORITHM.

  • Enable the specified unicast cipher algorithms for every enabled authentication algorithm that supports it
  • Disable all supported unicast cipher algorithms that are not in the specified list

The Microsoft 802.1X supplicant enables only one standard 802.11 unicast cipher algorithm. However, a supplicant provided by the independent hardware vendor (IHV) can enable one or more unicast cipher authentication algorithms. For more information about 802.1X supplicants, refer to the IEEE 802.1X‑2001 standard.

When OID_DOT11_ENABLED_UNICAST_CIPHER_ALGORITHM is queried, the miniport driver must do the following:

  • If this OID was previously set, returns the list of unicast cipher algorithms in the same order as they were set
  • If this OID was not previously set, returns its default unicast cipher algorithms in the list
  • The miniport driver cannot return an empty list of unicast cipher algorithms. If the 802.11 station has not enabled any unicast cipher algorithms, the miniport driver must return a list that contains DOT11_CIPHER_ALGO_NONE.

The default value for the msDot11EnabledUnicastCipherAlgo MIB object is the list of unicast ciphers supported by the authentication algorithms specified by the msDot11EnabledAuthAlgo MIB object. The default unicast cipher list must be ordered by preference. For more information about cipher preference, see DOT11_CIPHER_ALGORITHM.

The miniport driver must set the msDot11EnabledUnicastCipherAlgo MIB object to the default multicast cipher whenever the following occurs:

  • The miniport driver’s MiniportInitializeEx function is called.
  • A method request of OID_DOT11_RESET_REQUEST is made to reset the media access control (MAC) layer of the 802.11 station and the bSetDefaultMIB member of the DOT11_RESET_REQUEST structure is TRUE.
  • The msDot11EnabledAuthAlgo MIB object is changed in response to a set of OID_DOT11_ENABLED_AUTHENTICATION_ALGORITHM.

Requirements

Header

windot11.h

See Also

Reference

Native 802.11 Extensible Station OIDs
OID_DOT11_CONNECT_REQUEST
OID_DOT11_SUPPORTED_UNICAST_ALGORITHM_PAIR
DOT11_CIPHER_ALGORITHM_LIST
MiniportOidRequest
OID_DOT11_ENABLED_AUTHENTICATION_ALGORITHM
MiniportInitializeEx
OID_DOT11_RESET_REQUEST
DOT11_RESET_REQUEST
Native 802.11 Wireless LAN OIDs