Date: Mon, 29 Jan 2007 07:51:32 -0600 From: "Randy B" <aoz.syn@...il.com> To: john-users@...ts.openwall.com Subject: Re: Re: how to find a password of 16 digits > According to many pages, it is said that the only way of finding a WPA key is trying a wordlist with the handshake. Correct. Thus far, brute-force attacks are the only publicly-known attack vectors for WPA-PSK. > Now you speak about reducing my search set. - How can I reduce my process further, under the assumption of not knowing more than of 16 digits? I'm not sure you can. At least you seem to have eliminated alphabetic and special characters - that's a huge reduction. Unless you can identify another pattern (always divisible by X, character groupings, etc.), you've probably done as much as you can. > You wrote about hash implementations and character frequency analysis. - But how can this be done with the handshake capture file? It can't - it would have to be done against a set of already-known PSKs from the same manufacturer using the same generation process. You may even find that this 16-digit code is some kind of transform of the AP's MAC address, although I'd hate to see something as simple as that. You're headed down the right road using aircrack-ng, but realize that aircrack-ng is going to be your processing bottleneck. On a dual 2.4GHz P-IV Xeon setup I have, I was only able to handle roughly 320 candidates per second using both processors for aircrack-ng (down from John's capability of generating ~3.4m per second). There's a lot of processing involved in trying to crush WPA - according to aircrack-ng I was averaging ~280k cracks per second. I'll try this on the BIG machine in a bit (dual Xeon 5160), but AFAICT John is not going to be a holdup at all. -- To unsubscribe, e-mail john-users-unsubscribe@...ts.openwall.com and reply to the automated confirmation request that will be sent to you.
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