[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Demexp-dev] VIA x86-like processors with cryptographic facilities
From: |
David MENTRE |
Subject: |
Re: [Demexp-dev] VIA x86-like processors with cryptographic facilities |
Date: |
Tue, 21 Sep 2004 20:37:55 +0200 |
User-agent: |
Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux) |
Brian Hurt <address@hidden> writes:
> But there is still random information there. Even if the number is 70%
> 1's and 30% 0's, you're still getting (approximately) 0.6 bits of random
> information per bit (actually, it's a little bit less than this- I'm
> forgetting the actual formula at the moment). So if you need 256 bits of
> truely random bits, you'd need to collect 256/0.6 or 427 bits of biased
> bits, and then hash the value down to 256 bits, "concentrating" the
> randomness.
Thank you, I wasn't aware of this issue and possible solution to it.
Yours,
d.
--
David MENTRÉ <address@hidden>