Re: [PATCH 2/2] random: Account for entropy loss due to overwrites

From: Linus Torvalds
Date: Thu Apr 25 2013 - 10:38:29 EST

This doesn't work AT ALL. You even hint at the reason why in your message.

On Tue, Apr 23, 2013 at 9:26 PM, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> As such, this conservatism seems more than justified. Note, however,
> that attempting to add one bit of entropy will never succeed; nor will
> two bits unless the pool is completely empty. These roundoff
> artifacts could be improved by using fixed-point arithmetic and adding
> some number of fractional entropy bits.

Take a look at "add_interrupt_randomness()". Hmm..

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