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The functions are provided by a MySQL componentcomponent_enterprise_encryption, and installing the component installs all of the functions.

MySQL Enterprise Encryption functions are provided by the MySQLcomponent_enterprise_encryption component. For upgrade information, seeUpgrading MySQL Enterprise Encryption.

If you are upgrading from a release prior to MySQL 8.0.30: Before installing the component, unload any legacy functions using theDROP FUNCTION statement:

DROP FUNCTION asymmetric_decrypt;DROP FUNCTION asymmetric_derive;DROP FUNCTION asymmetric_encrypt;DROP FUNCTION asymmetric_sign;DROP FUNCTION asymmetric_verify;DROP FUNCTION create_asymmetric_priv_key;DROP FUNCTION create_asymmetric_pub_key;DROP FUNCTION create_dh_parameters;DROP FUNCTION create_digest;

The function names must be specified in lowercase. The statements require theDROP privilege for themysql database.

To install the component, issue thisINSTALL COMPONENT statement:

INSTALL COMPONENT "file://component_enterprise_encryption";

INSTALL COMPONENT requires theINSERT privilege for themysql.component system table because it adds a row to that table to register the component. To verify that the component has been installed, issue the statement shown here:

SELECT * FROM mysql.component;

Components listed inmysql.component are loaded by the loader service during the startup sequence.

If you need to uninstall the component, issue anUNINSTALL COMPONENT statement:

UNINSTALL COMPONENT "file://component_enterprise_encryption";

Uninstalling the component uninstalls all of the functions. For more details, seeSection 7.5.1, “Installing and Uninstalling Components”.

When you have installed the component, if you want the component functions to support decryption and verification for content produced by legacy functions, set theenterprise_encryption.rsa_support_legacy_padding system variable toON. Also, if you want to change the maximum length allowed for the RSA keys generated by the component functions, use theenterprise_encryption.maximum_rsa_key_size system variable to set an appropriate maximum. For configuration information, seeSection 8.6.2, “Configuring MySQL Enterprise Encryption”.