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Message-ID: <CA+TsHUCk3o1woX76hUki1kB+yB1WvoAtJB1umoMdf2SZQ8U1Zg@mail.gmail.com>
Date: Thu, 5 Sep 2013 00:17:28 +0530
From: Sayantan Datta <std2048@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: mask mode bug (was: Sayantan's Weekly Report #12)
On Wed, Sep 4, 2013 at 7:47 AM, Sayantan Datta <std2048@...il.com> wrote:
>
> On Wed, Sep 4, 2013 at 3:33 AM, magnum <john.magnum@...hmail.com> wrote:
>
>> The enclosed patch seems to do the trick. I see another problem too: With
>> 8-bit masks, eg. [\x20-\xff] (you need to escape or quote the backslashes
>> in the shell unless adding it as ?A in rpp.c), it cracks hashes but you get
>> false result from get_key (the worst bug next to false negatives!). The
>> first character is garbage. Possibly a signed char problem? It works fine
>> with CPU formats.
>>
>> Also, I really dislike that you pin LWS to 64 in mask mode but maybe
>> that's hard to work around.
>>
>> Am I interfering with GSoC now? Just tell me to shut up :) It's so cool
>> doing 250 Mp/s on a laptop, I can't stop myself.
>>
>
> No, of course not. I was a little busy for last few days and didn't had
> much time to reply to the posts in daytime. Suggestions are always
> appreciated. I'll check the patch at night and apply it.
>
> Regards,
> Sayantan
>
Yes, it was a bug indeed. I have applied this fix to other formats too with
some minor modifications. Thank you. BTW what is the best way to find these
type of bugs other than experience?
Regards,
Sayantan
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