libksba-dev software package provides X.509 and CMS support library - development files, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libksba-dev
libksba-dev is installed in your system.
Make ensure the libksba-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libksba-dev *
You will get with libksba-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libksba-dev |
| Version | 1.3.0-3ubuntu0.14.04.2 [amd64, |
| Description | X.509 and CMS support library - development files |
| Sub Section | libdevel |