How To Install python3-cryptography on Ubuntu 20.04

In this tutorial we learn how to install python3-cryptography on Ubuntu 20.04. python3-cryptography is Python library exposing cryptographic recipes and primitives (Python 3) Python library exposing cryptographic recipes and primitives (Python 3)

Introduction

In this tutorial we learn how to install python3-cryptography on Ubuntu 20.04.

What is `python3-cryptography`

python3-cryptography is:

The cryptography library is designed to be a “one-stop-shop” for all your cryptographic needs in Python.

As an alternative to the libraries that came before it, cryptography tries to address some of the issues with those libraries:

Lack of PyPy and Python 3 support.
Lack of maintenance.
Use of poor implementations of algorithms (i.e. ones with known side-channel attacks).
Lack of high level, “Cryptography for humans”, APIs.
Absence of algorithms such as AES-GCM.
Poor introspectability, and thus poor testability.
Extremely error prone APIs, and bad defaults.

This package contains the Python 3 version of cryptography. Task: server, ubuntu-desktop-minimal, ubuntu-desktop, cloud-image, ubuntu-core, kubuntu-desktop, xubuntu-core, xubuntu-desktop, lubuntu-desktop, ubuntustudio-desktop-core, ubuntustudio-desktop, ubuntukylin-desktop, ubuntu-mate-core, ubuntu-mate-desktop, ubuntu-budgie-desktop

Package: python3-cryptography Architecture: amd64 Version: 2.8-3 Priority: optional Section: python Source: python-cryptography Origin: Ubuntu Maintainer: Ubuntu Developers [email protected] Original-Maintainer: Tristan Seligmann [email protected] Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 1545 Depends: python3 (>= 3~), python3-cffi-backend-api-min (<= 9729), python3-cffi-backend-api-max (>= 9729), python3-six (>= 1.4.1), python3:any, libc6 (>= 2.14), libssl1.1 (>= 1.1.1) Suggests: python-cryptography-doc, python3-cryptography-vectors Breaks: python3-openssl (« 16.0.0) Filename: pool/main/p/python-cryptography/python3-cryptography_2.8-3_amd64.deb Size: 211212 MD5sum: f0921c3536b3c14e1d6fcfe8a4a94b45 SHA1: 2c8b75640e16f033481a7a727701d189c6adf954 SHA256: 2b5b02c5742fa82ed4e64ec25bcbfc20bfea10e38e3f984c09468a43d21e177d Homepage: https://cryptography.io/ Description-en: Python library exposing cryptographic recipes and primitives (Python 3) The cryptography library is designed to be a “one-stop-shop” for all your cryptographic needs in Python.

As an alternative to the libraries that came before it, cryptography tries to address some of the issues with those libraries:

Lack of PyPy and Python 3 support.
Lack of maintenance.
Use of poor implementations of algorithms (i.e. ones with known side-channel attacks).
Lack of high level, “Cryptography for humans”, APIs.
Absence of algorithms such as AES-GCM.
Poor introspectability, and thus poor testability.
Extremely error prone APIs, and bad defaults.

There are three methods to install python3-cryptography on Ubuntu 20.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install python3-cryptography Using apt-get

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

sudo apt-get update

After updating apt database, We can install python3-cryptography using apt-get by running the following command:

sudo apt-get -y install python3-cryptography

Install python3-cryptography Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install python3-cryptography using apt by running the following command:

sudo apt -y install python3-cryptography

Install python3-cryptography 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 Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install python3-cryptography using aptitude by running the following command:

sudo aptitude -y install python3-cryptography

How To Uninstall python3-cryptography on Ubuntu 20.04

To uninstall only the python3-cryptography package we can use the following command:

sudo apt-get remove python3-cryptography

Uninstall python3-cryptography And Its Dependencies

To uninstall python3-cryptography and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:

sudo apt-get -y autoremove python3-cryptography

Remove python3-cryptography Configurations and Data

To remove python3-cryptography configuration and data from Ubuntu 20.04 we can use the following command:

sudo apt-get -y purge python3-cryptography

Remove python3-cryptography configuration, data, and all of its dependencies

We can use the following command to remove python3-cryptography configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge python3-cryptography

References

Summary

In this tutorial we learn how to install python3-cryptography package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.