LDN services: Difference between revisions

A beacon and Action frame are broadcasted. The SSID in the beacon is hidden (32-bytes with value 0). For [[#Scan]]/[[#ScanPrivate]] it doesn't matter if no beacon is available ([[#NetworkInfo]] is the same), as long as the Action frame is broadcasted. However, the Station will not send a probe-request during connection if no beacon is available (and therefore not attempt any communication with the AccessPoint). The beacon doesn't have any custom Nintendo data, that data is in the Acton frame.

During connection, the Station first sends a probe-request using the [[#NetworkInfo|generated]] SSID from the Action frame. If the probe-response contains the expected data for the [[#SecurityConfig]] type, the Station then proceeds to connect to the AccessPoint. The key for data-frames, if [[#SecurityConfig|enabled]], is derived from a buffer containing: {[[#SecurityParameter]]+0x0} followed by {[[#SecurityConfig]] data with the specified data-size}. The [[#ActionFrame]]/data-frame keys are derived with the same func, the only difference is the input passed to this func + the passed constant data. The key derived by ldn is used directly as the static CCMP key for all data-frames (CCMP / MIC is standard). When [[#Protocol|Protocol]] is 3 the [[SPL_services|Generation]] is [[19.0.0|0x13]] instead of 0x0, for all of the previously mentioned keys derivation.