On Fri, 8 Apr 2011 09:27:11 -0500, Kenneth Marshall wrote:
> On
Fri, Apr 08, 2011 at 04:03:07PM +0200, Stevan Baji?? wrote:
>> On Fri, 8
Apr 2011 08:57:19 -0500, Kenneth Marshall wrote:
>>
>>> On
>> Fri, Apr
08, 2011 at 03:12:25PM +0200, Stevan Baji?? wrote:
>>
>>>> On Fri,
8
>> Apr 2011 14:35:32 +0300, Ibrahim Harrani wrote: >
>>>
>>>>
Hi,
>>>
>>>> Is
>>> there any way to decode tokens(tokenizer osb) in
the
>> r-left:#1010ff 2px solid; margin-left:5px;
width:100%">dspam_token_data table?
>> 00%">lockquote type=
"padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px;
width:100%"> Xperia(TM) PLAY #1010ff 2px solid; margin-left:5px;
width:100%"> https://lists.sourceforge.net/lists/li [1]
>> e"
style="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px;
width:100%"> user [3] The token is nothing else than a CRC64 ISO hash.
Assuming you have insane amount of memory
>>
>>> t:#1010ff 2px solid;
margin-left:5px; width:100%">
>> left:5px; width:100%"> Actually, you
would only be able to find A token that generated the same hash, not
neccessarily the token that WAS USED to generate the hash value. That is
so because
>>
>>> right. Especially with that weak CRC64-ISO that DSPAM
is using. Better would be to use CRC64 ECMA-182, but that is another
>>
ay... even that CRC64 ECMA-182 is not collision free. -- Kind Regards
from Switzerland, Stevan Baji??
>>
>>>
> I checked into different
hashes and the CRC64 was good enough in the collision domain to make it
not worth pursuing and alternative since then you could not upgrade your
existing instances. Ken
The CRC64-ISO is considered weak for hashing.
Read this document here if you need more info ->
http://www.cs.ucl.ac.uk/staff/d.jones/crcnote.pdf
--
Kind Regards
from Switzerland,
Stevan Bajić
Links:
------
[1]
https://lists.sourceforge.net/lists/li
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