haveged is worth mentioning as pretty good alternative solution
http://www.issihosts.com/haveged/ Cheers, Juergen On Fri, Dec 13, 2013 at 9:32 AM, Sven Kieske <[email protected]> wrote: > Answering myself, it seems > virtio-rng will be in 3.4: > https://bugzilla.redhat.com/show_bug.cgi?id=977079 > > But I don't find it in the planning: > > > https://docs.google.com/spreadsheet/ccc?key=0AuAtmJW_VMCRdHJ6N1M3d1F1UTJTS1dSMnZwMF9XWVE&usp=sharing#gid=0 > > Nevertheless it would be cool if someone could give some advice > how to handle entropy until 3.4 gets released > (and I have time to upgrade). > > Am 13.12.2013 09:09, schrieb Sven Kieske: > > Hi, > > > > I'm just wondering: How is the state > > of the virtio-rng implementation? > > > > I'm asking because I need to regenerate > > ssh host keys in newly deployed vms. > > > > (I seem to be the only person, or everybody > > else has found the solution, or nobody thinks > > about security, or a mixture of the above?) > > > > Additional I found no really guidance > > on how much entropy bits should be > > available to generate a secure key > > inside a vm, beside these numbers: > > > > http://www.ietf.org/rfc/rfc1750.txt > > suggests about 128 bits of entropy > > for a single cryptographic operation. > > > > various other sources mention ranges > > between 100-200 or even at least 4096 > > entropy bits. > > > > Would it be a workaround to add a virtual > > sound device and use this one for /dev/random ? > > (But it would be useless if you have no real sound hardware I guess). > > > > Additional when you want to regenerate host keys in e.g. Ubuntu > > 3 Keys get generated so you need even more entropy to be on the > > save side. > > > > If you got any links to best practices or some > > good news regarding the state of virtio-rng that would be awesome. > > > > Currently my vms have around 130-160 entropy bits available. > > > > -- > Mit freundlichen Grüßen / Regards > > Sven Kieske > > Systemadministrator > Mittwald CM Service GmbH & Co. KG > Königsberger Straße 6 > 32339 Espelkamp > T: +49-5772-293-100 > F: +49-5772-293-333 > https://www.mittwald.de > Geschäftsführer: Robert Meyer > St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen > Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen > _______________________________________________ > Users mailing list > [email protected] > http://lists.ovirt.org/mailman/listinfo/users > -- Sent from the Delta quadrant using Borg technology!
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