Mysql Password Decryption

무자비하게 대입하여 결과를 얻어 낸다.
테스트해보니 mysql 5.0  버전대도 풀린다.
4자리 테스트 하는데 약 5~6초 정도면 결과물을 출력한다.
5자리는 약 3분 정도..
6자리는 몇십분대 겠구나.
(사양은 셀 1.6 에 램 512, xp sp2)

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create table crack ( c char(1) );
insert into crack values ('a');
insert into crack values ('b');
insert into crack values ('c');
insert into crack values ('d');
insert into crack values ('e');
insert into crack values ('f');
insert into crack values ('g');
insert into crack values ('h');
insert into crack values ('i');
insert into crack values ('j');
insert into crack values ('k');
insert into crack values ('l');
insert into crack values ('m');
insert into crack values ('n');
insert into crack values ('o');
insert into crack values ('p');
insert into crack values ('q');
insert into crack values ('r');
insert into crack values ('s');
insert into crack values ('t');
insert into crack values ('u');
insert into crack values ('v');
insert into crack values ('w');
insert into crack values ('x');
insert into crack values ('y');
insert into crack values ('z');
insert into crack values ('0');
insert into crack values ('1');
insert into crack values ('2');
insert into crack values ('3');
insert into crack values ('4');
insert into crack values ('5');
insert into crack values ('6');
insert into crack values ('7');
insert into crack values ('8');
insert into crack values ('9');

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select
concat(t1.c, t2.c, t3.c, t4.c),
password(concat(t1.c, t2.c, t3.c, t4.c))
from
crack t1, crack t2, crack t3, crack t4
where
password(concat(t1.c, t2.c, t3.c, t4.c)) = "*94BDCEBE19083CE2A1F959FD02F964C7AF4CFC29";