How to install libsodium for ChaCha20

cd /etc

wget --no-check-certificate https://download.libsodium.org/libsodium/releases/LATEST.tar.gz

tar zxf LATEST.tar.gz

cd libsodium*

./configure

apt-get install make

make && make install

echo /usr/local/lib > /etc/ld.so.conf.d/usr_local_lib.conf

ldconfig