[Cryptech Tech] Equal bytes

[Basil Dolmatov]

dol@ с iPad

> 12 дек. 2014 г., в 16:01, Basil Dolmatov <dol at reedcat.net> написал(а):
> 
> Joachim,
> 
> Russ pointed to not only presence of two consequtive equal bytes ( frequency should be no more than 1/256^2 ), but the presence of pattern "AA XY AA AA",
Being strict the pattern was "AB XY AB AB". ;) 
> probability of which should be incredibly small.
> 
> dol@ с iPad
> 
>> 12 дек. 2014 г., в 15:53, Joachim Strömbergson <joachim at secworks.se> написал(а):
>> 
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA256
>> 
>> Aloha!
>> 
>> Russ, you should see the same issues in the latest data. I just wrote a
>> tiny script that looks for consequtive equal bytes and get the same
>> frequency in the old and the new data files:
>> 
>> Analyzed file: rosc_data_btsync/rosc_data.bin
>> Total number of bytes: 67121200
>> Number of equal bytes: 261655
>> Frequency in file:     0.003898
>> 
>> Analyzed file: rosc_data_btsync/rosc_data2.bin
>> Total number of bytes: 212097148
>> Number of equal bytes: 828955
>> Frequency in file:     0.003908
>> 
>> At least it is consistent. ;-)
>> 
>> - -- 
>> Med vänlig hälsning, Yours
>> 
>> Joachim Strömbergson - Alltid i harmonisk svängning.
>> ========================================================================
>> Joachim Strömbergson          Secworks AB          joachim at secworks.se
>> ========================================================================
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG/MacGPG2 v2
>> Comment: GPGTools - http://gpgtools.org
>> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
>> 
>> iQIcBAEBCAAGBQJUiuVWAAoJEF3cfFQkIuyNz/oQANJIRdxlNulWLJEwkxMUc6ty
>> 98cjcrGl3nNjnaE7fhffmyNsIs4OBWKGdzqkU3jbBJQ/1lf6uGyFwxh5WLXiAJt8
>> DmWtkKbwz1X6AT9M4xLpyOTH4lgln3yaj5MQRT1LknFfRPQbFc6DW8bijwP7fmkL
>> VmUEazQ4u/GOPf25k0i16aTkIu3A+aqpXtbYEw6tqpw3qDyxQ3MdLdlkMsoqQn12
>> WQapcDytOlTti06yd219dCwteGHpLhvRLWnV3UiowgOetZNiFoWWif1uJqGoA0Zl
>> 4yGteITQR2mhFIMt21BREJwJ2TQ4/YP5bCIed8KOty2i4tnNG4O5/hw9yjw0NWpD
>> rEHWuiY7fOxnUj5FHOPG6vH0SPnKnSs3O2aI3LpWHbv+FeJ6og/SU/tTh5/CEx91
>> JaYHzgADXU7OC9Qn417gx1kHWXDniMPcgbniqMluGfTaB1ufrpxGODB06/DGrOP4
>> 9dxlf/H9vA89vu9YC617BL+jEexzr5rou/DdUfQe9x2HHDeHhut6EV87ojAl7KIz
>> pe14qVa4wU1nrLCLihIVDTTkHul2qYVffAeDCNc6qTusaZ0679Ox3R76XYAJxiI7
>> 6Voz1VfQUaVg11bIrTw3oYWzN0ODWkXkjRap1hOvmd14fZsvu0fCWbTEWRef2NUc
>> liwnX/W1gtXGyZIf/INk
>> =f+f7
>> -----END PGP SIGNATURE-----
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