install soname 'auth_ed25519';
create user 'USER'         identified via unix_socket OR mysql_native_password as password("GOOD");
grant select on test.* to 'USER' ;
create user mysqltest1 identified via unix_socket OR mysql_native_password as password("good");
grant select on test.* to mysqltest1;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA unix_socket OR mysql_native_password USING '*8409037B3E362D6DAE24C8E667F4D3B66716144E'
# name match = ok
select user(), current_user(), database();
user()	current_user()	database()
USER@localhost	USER@%	test
# name does not match, password good = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
# name does not match, password bad = failure
mysqltest: Could not open connection 'default': 1045 Access denied for user 'mysqltest1'@'localhost' (using password: YES)
drop user 'USER', mysqltest1;
create user 'USER'         identified via mysql_native_password as password("GOOD") OR unix_socket;
grant select on test.* to 'USER' ;
create user mysqltest1 identified via mysql_native_password as password("good") OR unix_socket;
grant select on test.* to mysqltest1;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA mysql_native_password USING '*8409037B3E362D6DAE24C8E667F4D3B66716144E' OR unix_socket
# name match = ok
select user(), current_user(), database();
user()	current_user()	database()
USER@localhost	USER@%	test
# name does not match, password good = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
# name does not match, password bad = failure
mysqltest: Could not open connection 'default': 1698 Access denied for user 'mysqltest1'@'localhost'
drop user 'USER', mysqltest1;
create user 'USER'         identified via unix_socket OR ed25519 as password("GOOD");
grant select on test.* to 'USER' ;
create user mysqltest1 identified via unix_socket OR ed25519 as password("good");
grant select on test.* to mysqltest1;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA unix_socket OR ed25519 USING 'F4aF8bw7130VaRbdLCl4f/P/wkjDmgJXwWvpJ5gmsZc'
# name match = ok
select user(), current_user(), database();
user()	current_user()	database()
USER@localhost	USER@%	test
# name does not match, password good = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
# name does not match, password bad = failure
mysqltest: Could not open connection 'default': 1045 Access denied for user 'mysqltest1'@'localhost' (using password: YES)
drop user 'USER', mysqltest1;
create user 'USER'         identified via ed25519 as password("GOOD") OR unix_socket;
grant select on test.* to 'USER' ;
create user mysqltest1 identified via ed25519 as password("good") OR unix_socket;
grant select on test.* to mysqltest1;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA ed25519 USING 'F4aF8bw7130VaRbdLCl4f/P/wkjDmgJXwWvpJ5gmsZc' OR unix_socket
# name match = ok
select user(), current_user(), database();
user()	current_user()	database()
USER@localhost	USER@%	test
# name does not match, password good = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
# name does not match, password bad = failure
mysqltest: Could not open connection 'default': 1698 Access denied for user 'mysqltest1'@'localhost'
drop user 'USER', mysqltest1;
create user 'USER'         identified via ed25519 as password("GOOD") OR unix_socket OR mysql_native_password as password("works");
grant select on test.* to 'USER' ;
create user mysqltest1 identified via ed25519 as password("good") OR unix_socket OR mysql_native_password as password("works");
grant select on test.* to mysqltest1;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA ed25519 USING 'F4aF8bw7130VaRbdLCl4f/P/wkjDmgJXwWvpJ5gmsZc' OR unix_socket OR mysql_native_password USING '*7D8C3DF236D9163B6C274A9D47704BC496988460'
# name match = ok
select user(), current_user(), database();
user()	current_user()	database()
USER@localhost	USER@%	test
# name does not match, password good = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
# name does not match, second password works = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
# name does not match, password bad = failure
mysqltest: Could not open connection 'default': 1045 Access denied for user 'mysqltest1'@'localhost' (using password: YES)
drop user 'USER', mysqltest1;
create user mysqltest1 identified via mysql_native_password as password("good") OR mysql_native_password as password("works");
grant select on test.* to mysqltest1;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA mysql_native_password USING '*8409037B3E362D6DAE24C8E667F4D3B66716144E' OR mysql_native_password USING '*7D8C3DF236D9163B6C274A9D47704BC496988460'
# password good = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
# second password works = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
# password bad = failure
mysqltest: Could not open connection 'default': 1045 Access denied for user 'mysqltest1'@'localhost' (using password: YES)
drop user mysqltest1;
create user mysqltest1 identified via ed25519 as password("good") OR unix_socket OR mysql_native_password as password("works");
show grants for mysqltest1;
Grants for mysqltest1@%
GRANT USAGE ON *.* TO `mysqltest1`@`%` IDENTIFIED VIA ed25519 USING 'F4aF8bw7130VaRbdLCl4f/P/wkjDmgJXwWvpJ5gmsZc' OR unix_socket OR mysql_native_password USING '*7D8C3DF236D9163B6C274A9D47704BC496988460'
select json_detailed(priv) from mysql.global_priv where user='mysqltest1';
json_detailed(priv)
{
    "access": 0,
    "version_id": VERSION_ID,
    "plugin": "mysql_native_password",
    "authentication_string": "*7D8C3DF236D9163B6C274A9D47704BC496988460",
    "auth_or": 
    [
        {
            "plugin": "ed25519",
            "authentication_string": "F4aF8bw7130VaRbdLCl4f/P/wkjDmgJXwWvpJ5gmsZc"
        },
        {
            "plugin": "unix_socket"
        },
        {
        }
    ],
    "password_last_changed": #
}
select password,plugin,authentication_string from mysql.user where user='mysqltest1';
Password	plugin	authentication_string
*7D8C3DF236D9163B6C274A9D47704BC496988460	mysql_native_password	*7D8C3DF236D9163B6C274A9D47704BC496988460
flush privileges;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA ed25519 USING 'F4aF8bw7130VaRbdLCl4f/P/wkjDmgJXwWvpJ5gmsZc' OR unix_socket OR mysql_native_password USING '*7D8C3DF236D9163B6C274A9D47704BC496988460'
set password for mysqltest1 = password('foobar');
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA ed25519 USING 'qv2mG6HWCuy32Slb5xhV4THStewNz2VINVPbgk+XAJ8' OR unix_socket OR mysql_native_password USING '*7D8C3DF236D9163B6C274A9D47704BC496988460'
alter user mysqltest1 identified via unix_socket OR mysql_native_password as password("some");
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA unix_socket OR mysql_native_password USING '*BFE3F4604CFD21E6595080A261D92EF0183B5971'
set password for mysqltest1 = password('foobar');
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA unix_socket OR mysql_native_password USING '*9B500343BC52E2911172EB52AE5CF4847604C6E5'
alter user mysqltest1 identified via unix_socket;
set password for mysqltest1 = password('bla');
ERROR HY000: SET PASSWORD is ignored for users authenticating via unix_socket plugin
alter user mysqltest1 identified via mysql_native_password as password("some") or unix_socket;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA mysql_native_password USING '*BFE3F4604CFD21E6595080A261D92EF0183B5971' OR unix_socket
drop user mysqltest1;
# switching from mysql.global_priv to mysql.user
create user mysqltest1 identified via ed25519 as password("good") OR unix_socket OR mysql_native_password as password("works");
ERROR HY000: Column count of mysql.user is wrong. Expected 3, found 47. Created with MariaDB XX.YY.ZZ, now running XX.YY.ZZ. Please use mariadb-upgrade to fix this error
# switching back from mysql.user to mysql.global_priv
create user 'USER'         identified via mysql_native_password as '1234567890123456789012345678901234567890a' OR unix_socket;
grant select on test.* to 'USER' ;
create user mysqltest1 identified via mysql_native_password as '1234567890123456789012345678901234567890a' OR unix_socket;
grant select on test.* to mysqltest1;
update mysql.global_priv set priv=replace(priv, '1234567890123456789012345678901234567890a', 'invalid password');
flush privileges;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA mysql_native_password USING 'invalid password' OR unix_socket
# name match = ok
select user(), current_user(), database();
user()	current_user()	database()
USER@localhost	USER@%	test
# name does not match = failure
mysqltest: Could not open connection 'default': 1698 Access denied for user 'mysqltest1'@'localhost'
# SET PASSWORD helps
set password for mysqltest1 = password('bla');
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
drop user 'USER', mysqltest1;
create user mysqltest1 identified via ed25519 as password("good");
grant select on test.* to mysqltest1;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA ed25519 USING 'F4aF8bw7130VaRbdLCl4f/P/wkjDmgJXwWvpJ5gmsZc'
# no plugin = failure
mysqltest: Could not open connection 'default': 1045 Plugin client_ed25519 could not be loaded: no such file
alter user mysqltest1 identified via ed25519 as password("good") OR mysql_native_password as password("works");
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA ed25519 USING 'F4aF8bw7130VaRbdLCl4f/P/wkjDmgJXwWvpJ5gmsZc' OR mysql_native_password USING '*7D8C3DF236D9163B6C274A9D47704BC496988460'
# no plugin = failure
mysqltest: Could not open connection 'default': 1045 Access denied for user 'mysqltest1'@'localhost' (using password: YES)
# no plugin, second password works = ok
select user(), current_user(), database();
user()	current_user()	database()
mysqltest1@localhost	mysqltest1@%	test
drop user mysqltest1;
uninstall soname 'auth_ed25519';
create user mysqltest1 identified via mysql_native_password as password("good") OR unix_socket;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED VIA mysql_native_password USING '*8409037B3E362D6DAE24C8E667F4D3B66716144E' OR unix_socket
alter user mysqltest1 identified via mysql_native_password as password("better");
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED BY PASSWORD '*6E6CABC9967AB586F009616BA69DAC2953849C88'
flush privileges;
show create user mysqltest1;
CREATE USER for mysqltest1@%
CREATE USER `mysqltest1`@`%` IDENTIFIED BY PASSWORD '*6E6CABC9967AB586F009616BA69DAC2953849C88'
drop user mysqltest1;