Hi, Honza!
On Jul 14, Honza Horak wrote:
I've asked directly in the documentation page, but maybe someone will
know answer here:
https://mariadb.com/kb/en/mariadb/data-at-rest-encryption/#comment_2346
In that article it is said that 128, 192 or 256-bit keys are supported,
but later AES_CTR and AES_CBC modes talk only about 128bit keys. What
piece of information am I missing?
The article says "the plugin will use AES with the 128-bit keys in
the CTR mode for encrypting tablespace pages".
Because tablespace pages are always encrypted with a 128-bit tablespace
key. Which is different for every tablespace and it is generated from
the user-specified key, which might be 128-, 192-, or 256-bit.
Temporary files and binary logs are encrypted directly with the
user-specified key of a user-specified length.
