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Message-ID: <0070e440-3e46-9e36-f505-8862a12e0685@virginmedia.com>
Date: Sun, 20 May 2018 18:15:39 +0100
From: Eric Watson <ea-watson@...ginmedia.com>
To: john-users@...ts.openwall.com
Subject: Re: Unable to crack the password of a test rar file.
I tried JtR on a 4 core pi and notice that it is using 25% of the processor.
For the make I used "make -sj4", expecting it to use use 4 cores.
Disappointing.
Eric
On 20/05/18 16:15, Solar Designer wrote:
> On Sun, May 20, 2018 at 03:56:07PM +0100, Eric Watson wrote:
>> That edit sorted it!
> Great.
>
>> pi@...pberrypi:/var/share/temp/JohnTheRipper-bleeding-jumbo/run $ ./john
>> test_pswd.txt
>> Using default input encoding: UTF-8
>> Loaded 1 password hash (rar, RAR3 [SHA1 AES 32/32])
>> Warning: OpenMP is disabled; a non-OpenMP build may be faster
>> Press 'q' or Ctrl-C to abort, almost any other key for status
>> 0g 0:00:00:21 0.18% 1/3 (ETA: 19:03:53) 0g/s 2.630p/s 2.630c/s 2.630C/s
>> Ttest_file.txt.rar..File
> That's really awful speed.
>
> You might want to see if there's any mention of emulated unaligned
> accesses in the output of "dmesg".
>
>> Would it be possible to build a non-OpenMP build?
> Yes. You do that with "./configure --disable-openmp". But it will make
> very little difference.
>
> Is your Pi single-core?
>
>> I have 3 allways on Pi's for various tasks and my next learning curve
>> will be having them all crack together.
> This is easiest to do with the "--node" option.
>
>> I think I have chosen the correct reply method in Linux Thunderbird.
> It appears so.
>
> Alexander
>
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