[Cryptech Tech] New testdata
Joachim Strömbergson
joachim at secworks.se
Tue Dec 23 22:36:26 UTC 2014
Aloha!
MVH
JoachimS
> 23 dec 2014 kl. 22:42 skrev Russ Housley <housley at vigilsec.com>:
>
> Joachim:
>
>> Did you see the other posts by me and Fredrik about this?
>
> yes.
>
>> As far as we can judge, the frequency of repeated bytes is exactly what
>> one should expected. We see the exact same frequency for the avalanche
>> entropy provicer as wel as for 500 MByte from /dev/random in OSX.
>
> I do not accept this explanation. I would accept this if the repeated bytes were not _always_ proceeded by the same byte value two bytes before the repeat. There do not seem to be repeats without this pattern.
I see repeats in the data without this pattern too. In data from rosc, avalanche, OS X and Linux.
Have you tested with other data? The exact type of pattern is present in other data too.
>> Do you have any idea why the STS tool flagged this pattern?
>
> I'm not using the STS tool.
Oh, sorry, my bad.
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