airdecap-ng: patch for track WPA MIC Error

[S.Shiota]

Hi.

Here is patch for decrypt TKIP encrypted packet after 4way handshake.
I tried to decode WPA-PSK TKIP encrypted frame, airdecap-ng works well,
but airdecap can not decrypt after 4way handshake.

1) Authentication
2) (Re)Association
3) 4way handshake(that is plain EAPOL-Key)
4) GTK(encrypted EAPOL-Key by 3)'s PTK)

( .....airdecap-ng can decrypt packets Tx/Rxed....)

5) STA -> AP   EAPOL-Key(PTK or GTK,  Mic, Error, Request)
6) 4way handshake(encrypted EAPOL-Key by 3)'s PTK)
7) GTK(encrypted EAPOL-Key by 6)'s PTK)
    after 6), airdecap-ng can not decrypt packets,
   cause old key got from 3) does not work.

'Omnipeek personal' can not decrypt after 6) too.

[darkAudax]

S.Shiota,

Have you tried the latest svn version?  I thought the bug your previously reported had been fixed.  Is this a new bug?

d.

[S.Shiota]

Have you tried the latest svn version?  I thought the bug your previously reported had been fixed.  Is this a new bug?

d.

Yes, I confirmed previously issue was fixed. Thanks a lot for it. (http://trac.aircrack-ng.org/ticket/158)
This is new suggestion.

[Mister_X]

Is it completely fixed?

[S.Shiota]

Hi.

I confirmed #158 is fixed.