Re: [PATCH v4 0/5] /dev/random - a new approach

Sandy Harris
2016-06-17T15:26:28Z

David Jaša <djasa@redhat.com> wrote:

>
> BTW when looking at an old BSI's issue with Linux urandom that Jarod
> Wilson tried to solve with this series:
> https://www.spinics.net/lists/linux-crypto/msg06113.html
> I was thinking:
> 1) wouldn't it help for large urandom consumers if kernel created a DRBG
> instance for each of them? It would likely enhance performance and solve
> BSI's concern of predicting what numbers could other urandom consumers
> obtain at cost of memory footprint
> and then, after reading paper associated with this series:
> 2) did you evaluate use of intermediate DRBG fed by primary generator to
> instantiate per-node DRBG's? It would allow initialization of all
> secondary DRBGs right after primary generator initialization.

Theodore Ts'o, the random maintainer, already has a patch that
seems to deal with this issue. He has posted more than one
version & I'm not sure this is the best or latest, but ...