MCrypt is a replacement for the old crypt package and crypt command with
extensions. It allows developers to use a wide range of encryption functions
including encrypting files or data streams without having to be cryptographers.
The companion to MCrypt is libmcrypt, which contains the actual encryption
functions themselves and provides a standardized mechanism for accessing them.
The mcrypt package is recommended if you are using phpmyadmin for database
administration. To actually use mcrypt, you would have to recompile php with
the following config switch: "--with-mcrypt=shared,/usr/bin"
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