VOTE Apply PR#9084 reverting DEVRANDOM_WAIT
openssl-users at dukhovni.org
Fri Jun 7 17:28:30 UTC 2019
On Fri, Jun 07, 2019 at 11:09:45AM +0200, Matthias St. Pierre wrote:
> See the discussion on openssl-users:
> If desired, I can provide an alternative (competing) pull request which
> makes the DEVRANDOM_WAIT feature configurable in a proper and
> reasonable way. The default will be whatever the OMC decides.
I think that having the RNG behaviour capriciously different on
different systems based on the whims of whoever built the library
for that system is not a good idea. OpenSSL should provide an RNG
that does not block "unexpectedly", indefinitely, and unpredictably.
Where "unexpectedly", means except possibly early at boot time, but
ideally waiting for boot-time entropoy is something that systemd
and the like take care of, and application start scripts can just
register a dependency on some sort of "entropy" service, whose
successful initialization is sufficient to ensure adequately secure
non-blocking seeding of applications via one of getentropy(),
That is, I'd expect most of the work for ensuring adequate entropy
to happen outside libcrypto, except for perhaps enabling some
additional sources that may be available on various systems.
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