$ sudo apt-get update
$ sudo apt-get install libpococrypto9-dbg 

libpococrypto9-dbg is installed in your system.

Make ensure the libpococrypto9-dbg package were installed using the commands given below,

$ sudo dpkg-query -l | grep libpococrypto9-dbg *

You will get with libpococrypto9-dbg package name, version, architecture and description in a table

libpococrypto9-dbg package basic information: