From MD5 Hash back to Normal F

[BlazerV60]

So I have this code which outputs my file, "BrianProject.au3" as hashcode.

How can I turn this hashcode back into the file name?

#include <Crypt.au3>

 $dHash = _Crypt_HashFile("C:\Users\Brian\Documents\AutoItScripts\BrianProject.au3", $CALG_MD5)
 ConsoleWrite($dHash)

To clarify what I mean: I'm able to turn BrianProject.au3 into 0xt3opagjwihgw38gihwow4w (totally made that up).

Now am I able to turn 0xt3opagjwihgw38gihwow4w back into something that outputs "BrianProject.au3"?

Thanks

Edited June 21, 2014 by BlazerV60

[jchd]

Hopefully not! The actual purpose of any hash algorithm is to implement a one-way "function", which can't be inverted by any known mean. I put function in quotes since it's very hard to formally prove that there is at least one input for every possible resulting hash. But what we can be sure of is that there exist an infinity of inputs which all result in any given hash. This makes it impossible to decide which input was actually used, especially since it is extremely hard if not plain impossible to find an input corresponding to a given hash.

[Geir1983]

I think you are mixing hash with encryption. (Hash is one way, encrypt you can reverse back to its original state)

[t1ck3ts]

I think you are mixing hash with encryption. (Hash is one way, encrypt you can reverse back to its original state)

Just like Geir1983 said.

Only way using hash is to compare one hash key to another, thats it.