Error
Error Code:
3827
MySQL Error 3827: Encryption Mismatch & Privilege
Description
This error indicates a conflict where the default encryption setting for a database (or one being created/altered) does not align with the server's `default_table_encryption` system variable. It also signifies that the current user lacks the necessary privileges to perform the operation given this discrepancy.
Error Message
Database default encryption differ from 'default_table_encryption' setting, and user doesn't have enough privilege.
Known Causes
3 known causesEncryption Setting Mismatch
The database's intended default encryption setting clashes with the server's global `default_table_encryption` system variable.
Insufficient User Privileges
The user attempting the operation lacks the `ENCRYPTION_KEY_ADMIN` privilege or other required permissions to manage encryption settings or override server defaults.
Server `default_table_encryption` Conflict
The global `default_table_encryption` variable is set to a value that prevents the desired database encryption, and the user does not have the authority to bypass this restriction.
Solutions
3 solutions available1. Align Default Table Encryption easy
Ensure the database's default encryption matches the global 'default_table_encryption' setting.
1
Identify the current default table encryption for the specific database.
SELECT SCHEMA_NAME, DEFAULT_ENCRYPTION FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = 'your_database_name';2
Compare this with the global `default_table_encryption` setting. If they differ, you have two options:
3
Option A: Change the database's default encryption to match the global setting. This is often the preferred method if you don't have a specific reason for a different database-level default.
ALTER SCHEMA your_database_name DEFAULT_ENCRYPTION = 'ON' | 'OFF' | 'ENCRYPTION_ALGORITHM_NAME'; -- Replace with your desired global setting4
Option B: Change the global `default_table_encryption` setting to match the database's default. This requires modifying the MySQL configuration.
5
To change the global setting, locate your `my.cnf` or `my.ini` file, add or modify the `default_table_encryption` parameter under the `[mysqld]` section, and restart the MySQL server.
[mysqld]
default_table_encryption = 'ON' | 'OFF' | 'ENCRYPTION_ALGORITHM_NAME'2. Grant Necessary Privileges medium
Provide the user with the required privileges to manage encryption settings.
1
Determine the specific privileges required. For managing encryption, the user typically needs `ALTER` or `CREATE` privileges on the affected tables or schema, and potentially `SUPER` or `SYSTEM_VARIABLES_ADMIN` for global settings.
2
Grant the necessary privileges to the user. Replace `your_user` and `your_host` with the actual username and host.
GRANT ALTER ON your_database_name.* TO 'your_user'@'your_host';
GRANT CREATE ON your_database_name.* TO 'your_user'@'your_host';
-- If changing global settings, consider:
GRANT SUPER ON *.* TO 'your_user'@'your_host'; -- Use with caution
-- Or for newer MySQL versions:
GRANT SYSTEM_VARIABLES_ADMIN ON *.* TO 'your_user'@'your_host';3
Apply the privilege changes.
FLUSH PRIVILEGES;3. Recreate Table with Correct Encryption medium
If the mismatch is due to a specific table's encryption, recreate it with the intended settings.
1
Identify the table causing the issue and its current encryption settings.
SHOW CREATE TABLE your_database_name.your_table_name;2
Back up the table's data.
CREATE TABLE your_database_name.your_table_name_backup AS SELECT * FROM your_database_name.your_table_name;3
Drop the existing table.
DROP TABLE your_database_name.your_table_name;4
Recreate the table, specifying the desired encryption. Ensure the `DEFAULT_ENCRYPTION` of the schema is also aligned or explicitly set for the table.
CREATE TABLE your_database_name.your_table_name (
-- your_table_definition_here
) DEFAULT ENCRYPTION='ON' | 'OFF' | 'ENCRYPTION_ALGORITHM_NAME'; -- Example for explicit table encryption5
If the schema's `DEFAULT_ENCRYPTION` was the issue, ensure it's corrected as per Solution 1 before recreating the table.
6
Restore data from the backup.
INSERT INTO your_database_name.your_table_name SELECT * FROM your_database_name.your_table_name_backup;7
Clean up the backup table.
DROP TABLE your_database_name.your_table_name_backup;