@Annaduh Lot of information is missing. So many people don't even know that PMK is sent encrypted in case of enterprise but in PSK it is never sent. It is a little different, i'm trying to find out those steps taken among YOU,AP&RADIUS.
IEEE 802.11i-2004, or 802.11i for short, is an amendment to the original IEEE 802.11, implemented as Wi-Fi Protected Access II (WPA2). The draft standard was ratified on 24 June 2004. This standard specifies security mechanisms for wireless networks, replacing the short Authentication and privacy clause of the original standard with a detailed Security clause. In the process, the amendment deprecated broken Wired Equivalent Privacy (WEP), while it was later incorporated into the published IEEE 802.11-2007 standard.
== Replacement of WEP ==
802.11i supersedes the previous security specification...
Notice where in the diagram the PMK is being sent? It isn't
> The PMK is designed to last the entire session and should be exposed as little as possible; therefore, keys to encrypt the traffic need to be derived. A four-way handshake is used to establish another key called the Pairwise Transient Key (PTK). The PTK is generated by concatenating the following attributes: PMK, AP nonce (ANonce), STA nonce (SNonce), AP MAC address, and STA MAC address. The product is then put through a pseudo random function. The handshake also yields the GTK (Group Temporal Key), used to decrypt multicast and broadcast traffic.
@defalt This is the handshake of 802.11i, and has nothing to do with PSK or RADIUS
Read the PDF I sent you if you insist on figuring out how RADIUS works, but bearing in mind the reason you can't find that information when looking for info on the wireless 4-way handshake is because it's not part of the 4-way handshake.
We can not run any other site on office pc why can I only run my company website on office
we tried to change office modem so we can run all website except for my company
we tried to connect these two modem together but this did 't work
The first modem is netgenie on which we can only run comp...
@Annaduh When you login with username and password in Enterprise, does the AAA key (which is created by RADIUS server and is sent to AP through wire) is that AAA key same for every client in the enterprise?
> The 802.11i amendment describes the generic process for 802.1X/EAP authentication and key management processes, which includes both generation and distribution of AAA, pairwise, and group keys. There are five specific key types that are of particular interest in the 802.11i amendment. These keys (and their 802.11i definitions) are:
Authentication, Authorization, and Accounting (AAA) Key - Key information that is jointly negotiated between the Supplicant and the Authentication Server (AS). This key information is transported via a secure channel from the AS to the Authenticator. The pa…
> The AAA Key is derived from the keying material exported by the EAP method (MSK and EMSK). This derivation occurs on the AAA server. In many existing protocols that use EAP, the AAA Key and MSK are equivalent, but more complicated mechanisms are possible
When not using a PSK, the PMK is derived from the AAA key. The PMK shall be computed as the first 256 bits (bits 0–255) of the AAA key: PMK ← L(PTK, 0, 256). When this derivation is used, the AAA key must consist of at least 256 bits.
ok now i've got the whole story.. just a last question..how AAA key is received by the supplicant?..it has to be encrypted and decrypted somehow because supplicant is wireless..it is easy to send AAA to AP because AP and the RADIUS server are connected through wire
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