MySQL Enterprise Encryption functions are located in a user-defined function (UDF) library file installed in the plugin directory (the directory named by the plugin_dir system variable). The UDF library base name is openssl_udf and the suffix is platform dependent. For example, the file name on Linux or Windows is openssl_udf.so or openssl_udf.dll, respectively.

To install functions from the library file, use the CREATE FUNCTION statement. To load all functions from the library, use this set of statements (adjust the file name suffix as necessary):

Once installed, UDFs remain installed across server restarts. To unload UDFs, use the DROP FUNCTION statement. For example, to unload the key-generation functions, do this:

In the CREATE FUNCTION and DROP FUNCTION statements, the function names must be specified in lowercase. This differs from their use at function invocation time, for which you can use any lettercase.

The CREATE FUNCTION and DROP FUNCTION statements require the INSERT and DROP privilege, respectively, for the mysql database.