[Cryptography Team] type some random characters to seed the random numbers (was: CTR mode, SecureRandom, ElGamal updates)

[satru pakala]

Hi chris,
You said to use "SecureRandom fromUser nextRandom160".
Can you please tell me what is fromUser and what is for nextRandom160?
is fromUser is the fingerprint image?
Regards,
pakala


On 2/16/06, Chris Muller <chris at funkyobjects.org> wrote:
>
> Hi Pakala,
>
> > Hi,
> > Thank you. It is just a small project so no need to
> > worry about the hacker.
>
> I gather this refers to the (low) potential that your
> users will be able to hack "obscured" cleartext
> (mildly encrypted), even if not very secure from a
> skilled hacker.
>
> I made a big jump when the "adversarial setting" of
> digital security was spelled out for me.  Because
> digital bits are fluid and unbounded, able to travel
> so far, so quickly, you won't know when an attacker is
> attacking and, even if you did, usually nothing could
> be done about it.
>
> Therefore, the adversarial setting must be assumed
> that all data sent out of your computer (and, in
> extremely paranoid cases, the memory inside your
> computer) is sent to the attacker along the way, where
> they can do what they wish including modify it.  The
> same for data received.  The adversary is a
> mathemetician with a supercomputer, has lots of time
> and lots of incentive.  He's ready to inflict maximum
> hurt.
>
> This is the setting, therefore the goal must be to
> provide "mathematical protection."  To reveal or
> modify information, the adversary must solve a
> mathemetical problem that, so far, no mathmetician has
> been able to solve.
>
> > Can you please give me some more information how to
> > proceed.
> > you said that the GPG ask the user to type some
> > random charaters to seed the
> > random numbers and we can give fingeprint image. I
> > need some more
> > information about that.If you have any code please
> > send me.
>
> To do this, print this in a workspace:
>
> SecureRandom fromUser nextRandom160
>
> Cheers,
> Chris
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