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Date: Sun, 20 May 2018 17:04:06 +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.

The Pi I am using for this at the moment is:

pi@...pberrypi:~ $ cat /proc/cpuinfo
processor    : 0
model name    : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS    : 697.95
Features    : half thumb fastmult vfp edsp java tls
CPU implementer    : 0x41
CPU architecture: 7
CPU variant    : 0x0
CPU part    : 0xb76
CPU revision    : 7
Hardware    : BCM2835
Revision    : 000d
Serial        : 00000000c40a4f7c
pi@...pberrypi:~ $

The other two are quad core.

"Really awful speed" is fine for me as I am using JtR only to gain 
knowledge.

Thank you for the "--node" pointer.

Have a great day,

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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