[A51] Query - Use of Kraken with CPUs

Nikos Balkanas nbalkanas at gmail.com
Wed Mar 26 14:22:11 CET 2014


On Wed, Mar 26, 2014 at 1:51 PM, Joel Eriksson <joel.eriksson at gmail.com>wrote:

> It will be _a lot_ slower. If you want to have any chance of intercepting
> frequency hopping calls (without having receivers constantly recording
> everything at each of the possible frequencies) you need to use GPUs and
> SSDs. If you don't have to deal with frequency hopping, and don't have to
> decipher in near real-time, it doesn't matter as much.
>
> Regards,
> Joel
>
>
In such case, wouldn't it make more sense to have more CPUs on the MB?


> On Wed, Mar 26, 2014 at 11:36 AM, Nikos Balkanas <nbalkanas at gmail.com>wrote:
>
>>
>>
>>
>> On Wed, Mar 26, 2014 at 8:40 AM, Amber and Sarosh <
>> amber_sarosh at hotmail.com> wrote:
>>
>>> Hi All,
>>> Can anyone please guide if GPUs are necessary for rainbow table lookup
>>> using kraken to find the key to decipher an intercepted communication or is
>>> it possible to do this using just CPUs? In case the later is possible how
>>> much time it will take approximately?
>>>
>>>
>> GPUs are not necessary, just desirable. If GPUs are missing, kraken will
>> still work with A5Cpu.so, but it will be somewhat slower. Assuming that
>> during cracking your PC is CPU limited, the benefit should scale roughly
>> with your setup ratio of GPU power/CPU power. In reality you will run into
>> RAM and table I/O bottlenecks before that. In short it is highly depended
>> on your setup ;-)
>>
>> The idea is, that the easier factor to improve is the CPU, so why not do
>> it?
>>
>> Nikos
>>
>>> Regards,
>>> Naheed, Amber & Sarosh
>>>
>>> _______________________________________________
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>>> A51 at lists.srlabs.de
>>> https://lists.srlabs.de/cgi-bin/mailman/listinfo/a51
>>>
>>>
>>
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>>
>
>
> --
> Best Regards,
>   Joel Eriksson
>
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