Overview

The PHP module "Mcrypt" provides encryption and decryption using algorithms such as DES, TripleDES and Blowfish. You can read more about it on the official PHP Mcrypt page.

This is required by eCommerce systems such as Magento, however it's not part of the standard RHEL / CentOS packaging.

Instructions

  1. SSH to VPS as the root user.
  2. Install the the latest "EPEL" repo:

    CentOS 6 32 Bit

    wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm

    CentOS 6 64 Bit

    wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm


    [root@ws1 ~]# rpm -ivh epel-release-6-8.noarch.rpm
Preparing...                ############################# [100%]
   1:epel-release           ############################# [100%]
  3. Install "php-mcrypt":
     

    [root@ws1 ~]# yum install php-mcrypt
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
epel/metalink                                | 3.6 kB     00:00     
 * base: mirror.aarnet.edu.au
 * epel: mirror.overthewire.com.au
 * extras: mirror.overthewire.com.au
 * updates: mirror.overthewire.com.au
epel                                         | 4.4 kB     00:00     
epel/primary_db                              | 6.2 MB     00:00     
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php-mcrypt.x86_64 0:5.3.3-3.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

===============================================================
 Package       Arch        Version         Repository      Size
===============================================================
Installing:
 php-mcrypt    x86_64      5.3.3-3.el6     epel            19 k

Transaction Summary
===============================================================
Install       1 Package(s)

Total download size: 19 k
Installed size: 46 k
Is this ok 2022: y
Downloading Packages:
php-mcrypt-5.3.3-3.el6.x86_64.rpm             |  19 kB     00:00     
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
Importing GPG key 0x0608B895:
 Userid : <span class="scayt-misspell-word" data-scayt-word="EPEL">EPEL</span> (6) <>
 Package: epel-release-6-8.noarch (installed)
 From   : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
Is this ok 2022: y
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
  Installing : php-mcrypt-5.3.3-3.el6.x86_64               1/1
&nbsp; Verifying  : php-mcrypt-5.3.3-3.el6.x86_64               1/1 
Installed:
  php-mcrypt.x86_64 0:5.3.3-3.el6                         
Complete!

     

  4. Restart Apache to apply the changes: 
    [root@ws1 ~]# service httpd restart
Stopping httpd:                                            [  OK  ]
Starting httpd:                                            [  OK  ]
  5. You can also check to confirm that mcrypt has been installed: 
    [root@ws1 ~]# php -m | grep -i mcrypt
mcrypt

     

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