libkpgp4 software package provides gpg based crypto library, 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 libkpgp4
libkpgp4 is installed in your system.
Make ensure the libkpgp4 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libkpgp4 *
You will get with libkpgp4 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libkpgp4 |
| Version | 4:4.13.0-0ubuntu1 |
| Description | gpg based crypto library |
| Sub Section | libs |