decrypt wireshark packet capture with 4 way hadnshake

WPA2 AP management frame include RSN element that included unicast cipher suite, AKM information and GTK cipher suite (if both AES and TKIP are selected, then less stronger encryption method will be used for GTK).Ģ. The process if fairly the same as in previous section, I’ll highlight only information that is different.ġ. AP constructs 802.1x frame with new MIC and GTK with sequence number, This sequence number will be used in the next multicast or broadcast frame, so that the receiving STA can perform basic replay detection:įrom that point all data is sent encrypted. STA responds with 802.1x authentication frame with SNonce and MIC:Ĭ.

AP sends 802.1x authentication frame with ANonce, STA now has all information to construct PTK:ī. 4-way handshake, during this phase PTK is created, PSK is used as PMK to construct those values:Ī. This frame carries information about the NIC (e.g., supported data rates) and the SSID of the network it wishes to associate with.Īfter receiving the association request, the access point considers associating with the NIC, and (if accepted) reserves memory space and establishes an association ID for the NIC.Ħ. A NIC begins the association process by sending an association request to an access point. :Ĩ02.11 association enables the access point to allocate resources for and synchronize with a radio NIC. With open system authentication (the default), the radio NIC sends only one authentication frame, and the access point responds with an authentication frame as a response indicating acceptance (or rejection). The NIC begins the process by sending an authentication frame containing its identity to the access point. 802.11 authentication is a process whereby the access point either accepts or rejects the identity of a radio NIC. Probe response, AP responds with with a probe response frame, containing capability information, supported data rates, etc., when after it receives a probe request frame from STA :Ĥ. Probe request, is sent by STA to obtain information from AP:ģ. Beacon frames are transmitted periodically to anonunce presence of wireless network and contain all information about it(data rates, channels, security ciphers, key management etc):Ģ.

Decrypt wireshark packet capture with 4 way hadnshake