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  ANN: Crypto Blog         


Author: frankgerlach
Date: Jan 2, 2008 17:17

This message is to announce my blog about cryptography, especially
strong hand ciphers and the history of communications intelligence.
Last postings:
o Rommel the Crypto Fox
o Crypto Traitors
o Cryptologic Strategy For Minor Countries
o One-Time-Pads
o Simple Hand Ciphers Matrix Transposition Cipher ...
o About this blog
1 Comment
  Re: M'I.5,Persec ution ' Be rnard Le vin e xpresses h is vi ews         


Author: frankgerlach
Date: Jan 2, 2008 17:04

What you are describing is the typical perception of a schizophrenic
person. You think that everything revolves around yourself and you
only see the "facts" that will support that.
My advise for you is to admit yourself to a good psychiatric
institution and cooperate with their therapy. If you cooperate with
them, they will "adjust" you to medication that will get you rid of
those schizophrenic perceptions. After a couple of months you can
leave the institution and lead a normal life again. You will probably
need to take medication for the rest of your life, but that is the
price to pay for a normal life.
no comments
  Re: Uninitialized RAM as a PRNG seed         


Author: Vend
Date: Jan 2, 2008 08:38

On 1 Gen, 21:44, ross wrote:
> When a chunk of memory is newly allocated it is filled with data from
> whatever program last used it.

Not if the OS prevents data from lacking between different programs.
> Is there anything wrong with using that
> to initialize a PRNG?

Yes.

If you need cryptographical security, then an attacker can predict or
sometimes even choose the content of newly allocated memory.

If you don't need cryptographical security, it's still not good, since
the same initial values might repeat over multiple executions: better
to seed form the system timer in this case.
> (Unless your runtime lib "helpfully" clears new allocations for you, of
> course. Then you might as well just use 0 for a PRNG seed.)
>
> Something like the following.
>
> /*begin C-like pseudo code*/...
Show full article (1.66Kb)
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