delta/gnutls.git/lib/nettle/sysrng-linux.c, branch tmp-remove-debugging-code

sysrng-linux: improved detection of getrandom()

2017-05-20T18:41:43+00:00

The getrandom() call is defined in sys/random.h.

Signed-off-by: Nikos Mavrogiannopoulos

sysrng-linux: define _rnd_get_system_entropy unconditionally

2017-03-09T09:53:01+00:00

This fixes compilation in systems without getrandom().

Signed-off-by: Nikos Mavrogiannopoulos

rnd: switched to 3 chacha-based PRNGs for all security levels

2017-03-06T21:24:33+00:00

Chacha was selected because it is already present in TLS protocol
as algorithm, meaning that re-using would improve CPU caching,
and it is a comparable in performance algorithm to the existing
PRNG used for nonces (salsa20). The yarrow generator was removed
because we are primarily seeding from system devices which are
sufficiently trustworthy to offload us from coping with the
handling of multiple sources of input. As such it allows
us to switch to a simpler PRNG such as a stream cipher like Chacha.

Signed-off-by: Nikos Mavrogiannopoulos

nettle: renamed system random generator-related files for clarity

2016-10-29T21:41:16+00:00