How To Install libolm2 on Debian 10

Learn how to install libolm2 on Debian 10 with this tutorial. libolm2 is implementation of the Double Ratchet cryptographic ratchet in C++

Introduction

In this tutorial we learn how to install libolm2 on Debian 10.

What is libolm2

libolm2 is:

Olm is an implementation of the Double Ratchet cryptographic ratchet described by https://whispersystems.org/docs/specifications/doubleratchet/, written in C and C++11 and exposed as a C API.

This library also includes an implementation of the Megolm cryptographic ratchet which is intended for encrypted messaging applications where there may be a large number of recipients of each message, thus precluding the use of peer-to-peer encryption systems such as Olm.

Megolm is the end-to-end encryption system for the Matrix communications protocol.

There are three methods to install libolm2 on Debian 10. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install libolm2 Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install libolm2 using apt-get by running the following command:

sudo apt-get -y install libolm2

Install libolm2 Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install libolm2 using apt by running the following command:

sudo apt -y install libolm2

Install libolm2 Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install libolm2 using aptitude by running the following command:

sudo aptitude -y install libolm2

How To Uninstall libolm2 on Debian 10

To uninstall only the libolm2 package we can use the following command:

sudo apt-get remove libolm2

Uninstall libolm2 And Its Dependencies

To uninstall libolm2 and its dependencies that are no longer needed by Debian 10, we can use the command below:

sudo apt-get -y autoremove libolm2

Remove libolm2 Configurations and Data

To remove libolm2 configuration and data from Debian 10 we can use the following command:

sudo apt-get -y purge libolm2

Remove libolm2 configuration, data, and all of its dependencies

We can use the following command to remove libolm2 configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge libolm2

Dependencies

libolm2 have the following dependencies:

References

Summary

In this tutorial we learn how to install libolm2 package on Debian 10 using different package management tools: apt, apt-get and aptitude.