Re: [Xen-users] randomness entropy in DomU

[Robert Welz <welz@xxxxxxxxxxxx>]

Q: What would happen, if I buy an external random number generator?
There are USB and PCI devices on the market which start at 200 EUR. But
I can use such a device in only one domain? The other domains won't
profit from the extra entropy?

Or can I mount /dev/random over nfs for all other domains? Would that
work? I would feed one domU with the external generator and use
/dev/random in all other domU's over nfs on the same machine...

Any ideas/comments welcome.

Greetings,
Robert




Robert Welz schrieb:
> Hello.
> I was just digging around in the net and found the thread
> http://lkml.org/lkml/2006/5/12/103
>
> So my questions: Are there any (good) news concerning the implementation
> of /dev/random in the kernel?
>
> I just cat /proc/sys/kernel/random/entropy_avail
> and saw I have about 250 in the DomU's and 3500 on Dom0. I haven't even
> started to implement encryption for the different kind of services I use
> on the DomUs and I have no hw_random.
>
> Any ideas/comments would be helpful on this matter, since I want to go
> online with my PKI in the next 4 weeks.
>
> Greetings,
> Robert
>
>
>
>
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> http://lists.xensource.com/xen-users
>
>   


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