crypto-algorithms "have no resistence to side-channel attacks and should not
be used in contexts that need cryptographically secure implementations" (see
lib/crypto-algorithms/README.md), so using OpenSSL or LibreSSL is preferable.
This does solve https://github.com/matrix-org/olm/issues/3 for some platforms,
without breaking other platforms without these libraries (like web).
Signed-off-by: Lukas Lihotzki <lukas@lihotzki.de>
