Messages in this thread | | | Date | Fri, 16 May 2008 13:25:09 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 2/2] lguest: virtio-rng support |
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Johannes Berg wrote: >> + >> +/* Our random number generator device reads from /dev/urandom into the Guest's >> + * input buffers. The usual case is that the Guest doesn't want random numbers >> + * and so has no buffers although /dev/urandom is still readable, whereas >> + * console is the reverse. > > Is it really a good idea to use the hosts /dev/urandom to fill the > guests /dev/random?
Only if you have an entropy estimate to go with it. It's still dubious, though: the guests own pool will do its own mixing, so you might as well pull from /dev/random in the host as being a genuine entropy source and only add what entropy is available.
-hpa
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