Hello,
This is my first small personal contribution.
Motivation :
- Using fail-safe, file descriptor free solution on *BSD and Darwin system
- Somehow avoiding at the moment FreeBSD as it still uses RC4 (seemingly
updated to Chacha20 for FreeBSD 12.0 and eventually backported later on).
- For implementation based on Chacha* it is known to be enough fast for the
purpose.
- make check passes.
Hope it is good.
Thanks in advance.