[Cerowrt-devel] pcengines apu2c4 hardware random number generation

[Dave Taht]

I was doing a bunch of long running flent tests through an ath10k card
in wpa2 mode on ubuntu and not running haveged or rng-tools going.

cat /dev/hwrng showed no hardware random number generator module
working, so I looked at the specs, didn't find one for the cpu. Have
not checked to see if the intel ethernet driver or the ath10k actually
add to the randomness pool... or apic...

watch cat /proc/sys/kernel/random/entropy_avail

is my idea of entertainment on a tuesday afternoon. I do see it
refilling at a reasonable rate tho, even without haveged.

I *like* hwrngs.


On Wed, May 4, 2016 at 5:16 PM, Luis E. Garcia <luis at bitamins.net> wrote:
> Dave,
> Can you give me more details on how you were genereating Randon Numbers and
> how did you run out of them.
>
> Luis
>
> On Wed, May 4, 2016 at 4:28 PM, Dave Taht <dave.taht at gmail.com> wrote:
>>
>> one of the few flaws in this board so far is that it does not appear
>> the GX-412TC in it has a hardware random number generator.
>>
>> (yes, I just ran it out of random numbers)
>>
>> There are ton of "hardware random number generators out there" - quite
>> a few fairly "cheap" ones on usb.
>>
>> The board has internal usb headers, gpios, and i2c. Any other means of
>> generating good random numbers?
>>
>> http://pcengines.ch/pdf/apu2.pdf
>>
>> so I figure that there might be something even simpler out there from
>> the pi-ish or beaglebone world that could be repurposed to suit?
>>
>> I've always wanted to have *3* hwrngs - one designed by the NSA,
>> another by the KGB, and one by open source folk, and to mix them
>> together.
>>
>> --
>> Dave Täht
>> Let's go make home routers and wifi faster! With better software!
>> http://blog.cerowrt.org
>> _______________________________________________
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>> Cerowrt-devel at lists.bufferbloat.net
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>
>



-- 
Dave Täht
Let's go make home routers and wifi faster! With better software!
http://blog.cerowrt.org