I have problem with managing user (add/drop,
change password) on Firebird database server
via JDBC. I have read to the whole class library
documentation of Jaybird-JDBC driver, but
cannot found anything discuss them.

There is another way to manage users by directly
editing the content of ISC4.GDB, but I don't know
what encryption method used in Firebird password.

Anyone can help me? Thanks before