Editing Hash Values

Can anyone tell me how to edit hash values?
I already managed to view the hash values but I'm not yet able to edit them.

EDIT: SOLVED
REQUEST CLOSE

Hmm the point ?

WarRock runs a CRC Checksum when starting up.
So it basicly means that it scans the Hash Value of certain files.
If the Hash Value of the file, doesn't match with the given Hash Value, then WarRock will crash.
Modders are trying to achieve this for a long time now.
They try to make both Hash Values the same to the checksum doesn't pick up any errors.
I managed to do this.
The only problem left is the filesize.