MySQL 9.0 Reference Manual Including MySQL NDB Cluster 9.0
MySQL Server supports a keyring that enables internal server components and plugins to securely store sensitive information for later retrieval. See Section 8.4.4, “The MySQL Keyring”.
The keyring_keys table exposes
metadata for keys in the keyring. Key metadata includes key
IDs, key owners, and backend key IDs. The
keyring_keys table does
not expose any sensitive keyring data
such as key contents.
The keyring_keys table has these
columns:
KEY_ID
The key identifier.
KEY_OWNER
The owner of the key.
BACKEND_KEY_ID
The ID used for the key by the keyring backend.
The keyring_keys table has no
indexes.
TRUNCATE TABLE is not permitted
for the keyring_keys table.