As I said, the option of doing feed from hwrng directly via a kernel thread
seems the most logical thing to me, assuming you can convince Ted & co. rngd
doesn't really add much value for a whitened source.
Torsten Duwe wrote:
>
>
>On Thu, 12 Sep 2013, H. Peter Anvin wrote:
>
>> From what I can
By the way, haveged is... worthy of suspicion (I doubt it is malicious, but
still). Its self-tests are completely useless (replace the entropy source with
a constant "1" and they still pass) and there is as far as I know no analysis
about the randomness other than "it passes some tests."
Tor
On Thu, 12 Sep 2013, H. Peter Anvin wrote:
> From what I can gather from the patch this is too heavyweight (need
> locks and so on) to use as arch_get_random*(). There has been a lot of
Alas, I can see there's only x86 that currently has this implemented?
> discussion about the pros and cons
On 09/12/2013 02:41 AM, Torsten Duwe wrote:
>
> Running completely virtualised, system Z severely lacks good true random
> sources.
> Gathering entropy in a virtual environment is difficult. To compensate, there
> is
> specialised crypto hardware which includes a source for hardware randomness;
Running completely virtualised, system Z severely lacks good true random
sources.
Gathering entropy in a virtual environment is difficult. To compensate, there is
specialised crypto hardware which includes a source for hardware randomness;
the zcrypt driver is able to access this random source. T
On Wed, 2013-09-04 at 10:48 +0200, Torsten Duwe wrote:
[]
> +++ b/drivers/s390/crypto/zcrypt_api.c
> @@ -1141,6 +1144,36 @@ static struct hwrng zcrypt_rng_dev = {
][
> +static int zcrypt_hwrng_fillfn(void *unused)
> +{
> + long rc;
> +
> + while (!kthread_should_stop()) {
> +
[Checkpatch'ed, IBM folks Cc'ed]
Running completely virtualised, system Z severely lacks good true random
sources.
Gathering entropy in a virtual environment is difficult. To compensate, there is
specialised crypto hardware which includes a source for hardware randomness;
the zcrypt driver is abl
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