[cryptography] urandom vs random

Ben Laurie ben at links.org
Sun Aug 18 02:11:08 EDT 2013


On 17 August 2013 18:17, James A. Donald <jamesd at echeque.com> wrote:

>  On 2013-08-17 10:12 PM, Ben Laurie wrote:
>
>
> What "external" crypto can you not fix? Windows? Then don't use Windows.
> You can fix any crypto in Linux or FreeBSD.
>
>
> No you cannot.
>
>
>
>  So what? BSD's definition is superior. Linux should fix their RNG. Or
> these people who you think should implement their own should. Or they could
> just switch to BSD.
>
>
> That it does not, implicitly admits that you, Ben Laurie, cannot fix linux.
>

If I chose to run Linux, I could fix the version I ran. In fact, I choose
not to run it, so I don't need to.


>
> We want that all implementations of /dev/random and /dev/urandom behave
> the same, and that they behave correctly on all machines.  We don't have
> that.
>
> Hence the need for each implementer to reinvent the wheel.
>
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