How To Install mcrypt on Debian 9

In this tutorial we learn how to install mcrypt on Debian 9. mcrypt is Replacement for old unix crypt(1)

Introduction

In this tutorial we learn how to install mcrypt on Debian 9.

What is mcrypt

mcrypt is:

mcrypt is a crypting program, intended to be replacement for the old unix crypt(1). But it can do a lot more, since with its libmcrypt library it can encrypt and decrypt with the following alogirhtms: BLOWFISH, TWOFISH, DES, TripleDES, 3-WAY, SAFER-sk64, SAFER-sk128, SAFER+, OKI97, GOST, RC2, RC6, MARS, IDEA, RIJNDAEL-128, RIJNDAEL-192, SERPENT, RIJNDAEL-256, CAST-128 (known as CAST5), CAST-256, ARCFOUR, ENIGMA, PANAMA, XTEA and WAKE.

Please note that this package is buggy and unmaintained by the upstream authors. If you can, please look for other implementations (openssl, gnutls, gnupg).

There are three methods to install mcrypt on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install mcrypt Using apt-get

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

sudo apt-get update

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

sudo apt-get -y install mcrypt

Install mcrypt Using apt

Update apt database with apt using the following command.

sudo apt update

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

sudo apt -y install mcrypt

Install mcrypt 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 mcrypt using aptitude by running the following command:

sudo aptitude -y install mcrypt

How To Uninstall mcrypt on Debian 9

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

sudo apt-get remove mcrypt

Uninstall mcrypt And Its Dependencies

To uninstall mcrypt and its dependencies that are no longer needed by Debian 9, we can use the command below:

sudo apt-get -y autoremove mcrypt

Remove mcrypt Configurations and Data

To remove mcrypt configuration and data from Debian 9 we can use the following command:

sudo apt-get -y purge mcrypt

Remove mcrypt configuration, data, and all of its dependencies

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

sudo apt-get -y autoremove --purge mcrypt

Dependencies

mcrypt have the following dependencies:

References

Summary

In this tutorial we learn how to install mcrypt package on Debian 9 using different package management tools: apt, apt-get and aptitude.