Requirements

These functions work using » mcrypt. To use it, download libmcrypt-x.x.tar.gz from » http://mcrypt.sourceforge.net/ and follow the included installation instructions.

libmcrypt Version 2.5.6 or greater is required.

Windows users will find the library is the PHP 5.2 Windows binaries release. PHP 5.3 Windows binaries uses the static version of the MCrypt library, no DLL are needed.

If you linked against libmcrypt 2.4.x or higher, the following additional block algorithms are supported: CAST, LOKI97, RIJNDAEL, SAFERPLUS, SERPENT and the following stream ciphers: ENIGMA (crypt), PANAMA, RC4 and WAKE. With libmcrypt 2.4.x or higher another cipher mode is also available; nOFB.

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User Contributed Notes 5 notes

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1
Antoine
14 years ago
mcrypt is built in for PHP 5.3.x on windows, you don't need to do anything with a dll anymore.
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jcwebb at dicoe dot com
10 years ago
there are no instructions included with the sourceforge download.

After php 5.3 mcrypt is automatically included and enabled.
(i was looking to enable an extension)
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Anonymous
12 years ago
Both mcrypt and libmcrypt are available through the linked website.  You simply have to click the "Browse all files" or similar link once on the "development site" and not just look for the default Sourceforge download button.
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tom420 dot duhamel at gmail dot com
15 years ago
If installing libmcrypt from RPM, you need both libmcrypt*.rpm and libmcrypt-devel*.rpm. I found RPMs for both were available for most platforms on this page:

http://rpmforge.net/user/packages/libmcrypt/

Also files.edin.dk does not seem to carry the win32 files anymore.
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Vladimir Kovpak
9 years ago
On linux:

sudo apt-get install php5-mcrypt
sudo php5enmod mcrypt
sudo service apache2 restart
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