Stanimir Varbanov wrote:
> I ran the rngtest with following command line:
>
> # cat /dev/hw_random | rngtest -c 10
> ...
> rngtest: bits received from input: 200032
> rngtest: FIPS 140-2 successes: 99925
> rngtest: FIPS 140-2 failures: 75
> ...
>
> Could you guys comment those results?
The
On 10/10/2013 03:41 AM, Paul Mackerras wrote:
> On Wed, Oct 09, 2013 at 08:07:35AM -0700, H. Peter Anvin wrote:
>
>> consider the PowerPC random number generator[1]) and
>
> [snip]
>
>> [1] which has a known first-order bias which they "correct" for by
>> XORing two datums together in a very sim
Hi Ted, Peter,
On 10/09/2013 06:07 PM, H. Peter Anvin wrote:
> On 10/09/2013 07:46 AM, Stanimir Varbanov wrote:
>>
>> No, there is no public documentation for the block. Here is the driver
>> documentation which I used as a base [1].
>>
>> My guess was that - if it is PRNG (got from hardware descr
On Wed, Oct 09, 2013 at 08:07:35AM -0700, H. Peter Anvin wrote:
> consider the PowerPC random number generator[1]) and
[snip]
> [1] which has a known first-order bias which they "correct" for by
> XORing two datums together in a very simple data reduction step.
65 actually, not two.
> However,
On 10/09/2013 09:03 AM, Theodore Ts'o wrote:
> On Wed, Oct 09, 2013 at 08:07:35AM -0700, H. Peter Anvin wrote:
>> There needs to be an architecturally guaranteed lower bound on the
>> entropic content for this to be at all useful. However, the hwrandom
>> interface is currently expecting fully ent
On Wed, Oct 09, 2013 at 08:07:35AM -0700, H. Peter Anvin wrote:
> There needs to be an architecturally guaranteed lower bound on the
> entropic content for this to be at all useful. However, the hwrandom
> interface is currently expecting fully entropic output (which is almost
> certainly bogus...
On 10/09/2013 07:46 AM, Stanimir Varbanov wrote:
>
> No, there is no public documentation for the block. Here is the driver
> documentation which I used as a base [1].
>
> My guess was that - if it is PRNG (got from hardware description link
> above) than according to wiki [2] it is also known as
Hi Ted,
On 10/04/2013 09:10 PM, Theodore Ts'o wrote:
> On Fri, Oct 04, 2013 at 07:23:50PM +0300, Stanimir Varbanov wrote:
>> I guess that it should follow NIST 800-90 recommendation, but I'm not
>> aware what DRBG mechanism is used.
>>
>> To be honest I really don't know the hardware implementatio
