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In WPA2-protected WLANs, secure communication is established through a multi-step process. Initially, devices associate with the Access Point (AP) via an association request. This is followed by a 4-way handshake, a crucial step ensuring both the client and AP have the correct Pre-Shared Key (PSK) without actually transmitting it.
[3] [4] The new standard uses 128-bit encryption in WPA3-Personal mode (192-bit in WPA3-Enterprise) [5] and forward secrecy. [6] The WPA3 standard also replaces the pre-shared key (PSK) exchange with Simultaneous Authentication of Equals as defined in IEEE 802.11-2016 resulting in a more secure initial key exchange in personal mode.
WPA-PSK and WPA2-PSK ("WPA-Personal", pre-shared key) WPA3 [5] WPA with EAP ("WPA-Enterprise", for example with RADIUS authentication server) RSN: PMKSA caching, pre-authentication; IEEE 802.11r; IEEE 802.11w; Wi-Fi Protected Setup ; Included with the supplicant are a GUI and a command-line utility for interacting with the running supplicant.
The Wi-Fi Alliance refers to their approved, interoperable implementation of the full 802.11i as WPA2, also called RSN (Robust Security Network). 802.11i makes use of the Advanced Encryption Standard (AES) block cipher, whereas WEP and WPA use the RC4 stream cipher.
Wireless network cards for computers require control software to make them function (firmware, device drivers). This is a list of the status of some open-source drivers for 802.11 wireless network cards. Location of the network device drivers in a simplified structure of the Linux kernel.
Some devices with dual-band wireless network connectivity do not allow the user to select the 2.4 GHz or 5 GHz band (or even a particular radio or SSID) when using Wi-Fi Protected Setup, unless the wireless access point has separate WPS button for each band or radio; however, a number of later wireless routers with multiple frequency bands and ...
WPA2 uses an encryption device that encrypts the network with a 256-bit key; the longer key length improves security over WEP. Enterprises often enforce security using a certificate-based system to authenticate the connecting device, following the standard 802.11X. In January 2018, the Wi-Fi Alliance announced WPA3 as a replacement to WPA2 ...
Wi-Fi Protected Access 2 (WPA2) ratified in 2004 is considered secure, provided a strong passphrase is used. The 2003 version of WPA has not been considered secure since it was superseded by WPA2 in 2004. In 2018, WPA3 was announced as a replacement for WPA2, increasing security; [147] it rolled out on 26 June. [148]