tree e2e7e132ea1a0483c1b7bec4910aa4f99e1fd8e6
parent 8ee53ed9ec5e5f045778ab8b30f10cb86ec55c4a
author Holger Hans Peter Freyther <holger@moiji-mobile.com> 1435732456 +0200
committer Holger Hans Peter Freyther <holger@moiji-mobile.com> 1435732456 +0200

nat: Use RAND_bytes instead of /dev/urandom

We don't need to consume all the entropy of the kernel but can
use libcrypto (OpenSSL) to generate random data. It is not clear
if we need to call RAND_load_file but I think we can assume that
our Unices have a /dev/urandom.

This takes less CPU time, provides good enough entropy (in theory)
and leaves some in the kernel entropy pool.