My god, some of you are stupid. Geek appears to be the only one here with a clue what hes on about.
Ok, let me exsplain. On a computer we encode data. Aka data is reprisnted in binary form, be it ascii for text, or by any other means, for images, sound, video or what ever else.
Encription, is then when we put data in to a form when its not readable.
Say we do a simple ceaser encription
Hello People << normal
ifmmp qfpqmf <<encripted.
Decription then works by doing the encription backwards, aka we shift it to the left as opposed to the right. Hence we get back are orignal unencripted text "Hello People"
Very easy.
Md5 though is NOT an encription, it is a fixed lengh one way hash. Since its not encripted, it cant be decripted. Since its a one way hash, it cant be worked out by any other way.
You can only decript something thats Encripted. Since md5 isnt incripted YOU CAN NOT DECRIPT IT.
A hash table may be able to work out the orignal text from an md5 hash, but not by decripting it, by looking it up. as decription is still impossible. Since it was never encripted to start with.
futher reading..
http://en.wikipedia.org/wiki/MD5
http://www.reference.com/browse/wiki/MD5
http://www.answers.com/topic/md5
http://www.renewdata.com/hash-values.php
NO stop makeing yourslef look like ******s, get a clue, and stop saying such moronic things on a subject you obvuosly know abosulty nothing about.