$ sudo apt-get update
$ sudo apt-get install libqca2-plugin-ossl 

libqca2-plugin-ossl is installed in your system.

Make ensure the libqca2-plugin-ossl package were installed using the commands given below,

$ sudo dpkg-query -l | grep libqca2-plugin-ossl *

You will get with libqca2-plugin-ossl package name, version, architecture and description in a table

libqca2-plugin-ossl package basic information: