Extension:CentralAuth/globaluser table

mysql> describe globaluser; +--+---+--+-+-++ +--+---+--+-+-++ +--+---+--+-+-++
 * Field                       | Type                                  | Null | Key | Default | Extra          |
 * gu_id                       | int(11)                               | NO   | PRI | NULL    | auto_increment |
 * gu_name                     | varbinary(255)                        | YES  | UNI | NULL    |                |
 * gu_enabled                  | varbinary(14)                         | NO   |     |         |                |
 * gu_enabled_method           | enum('opt-in','batch','auto','admin') | YES  |     | NULL    |                |
 * gu_home_db                  | varbinary(255)                        | YES  |     | NULL    |                |
 * gu_email                    | varbinary(255)                        | YES  | MUL | NULL    |                |
 * gu_email_authenticated      | binary(14)                            | YES  |     | NULL    |                |
 * gu_salt                     | varbinary(16)                         | YES  |     | NULL    |                |
 * gu_password                 | tinyblob                              | YES  |     | NULL    |                |
 * gu_locked                   | tinyint(1)                            | NO   |     | 0       |                |
 * gu_hidden                   | varbinary(255)                        | NO   |     |         |                |
 * gu_registration             | varbinary(14)                         | YES  |     | NULL    |                |
 * gu_password_reset_key       | tinyblob                              | YES  |     | NULL    |                |
 * gu_password_reset_expiration | varbinary(14)                        | YES  |     | NULL    |                |
 * gu_auth_token               | varbinary(32)                         | YES  |     | NULL    |                |
 * gu_cas_token                | int(10) unsigned                      | NO   |     | 1       |                |