[Cryptography] Ex-CIA Joshua Schulte Describes His Data/Crypto Hiding Prowess

Patrick Chkoreff pc at fexl.com
Thu Mar 5 09:34:47 EST 2020


Henry Baker wrote on 3/4/20 10:49 AM:
> At 06:27 PM 2/28/2020, Grant Schultz wrote:
>> 3. Stego hides data as random or pseudorandom data, and thus is immediately suspect.
> 
> The first thing I do with every new storage disk/SDcard is: dd if=/dev/urandom of=/dev/sdX;
...
> (Yes, I also understand that /dev/urandom gives someone a *huge* of information about the current state of my random number generator, but hopefully Linux has finally gotten their act together and fixed these issues.)

You could buy a set of 16-sided dice.  After running the dd command,
roll those dice to generate 32 random hex digits (128 bits).  Then echo
those into /dev/random.  Now they know nothing about the state of your
random number generator.


-- Patrick

P.S. You could use 6-sided dice, but you'd need about 50 rolls.


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