Help md5 edit

[vegethssj5]

Hi, I'm looking for a way or a tool that allows me to 'edit': md5, sha and crc of .Xml file or at least one of them. I tend to point out that I dont want to generate these codes at random and then integrate them into the affected files (I dug for hours just getting this kind of tool), but being able to make the change at will.

In a nutshell I should make a copy of md5 of a file x.xml on a file y.xml, so different from the content ..

[MoepMeep]

Hash function - Wikipedia, the free encyclopedia

[vegethssj5]

really..really genius......... -_-'

[.SkyneT.]

Originally Posted by vegethssj5

really..really genius......... -_-'

You're just not able to understand it.

Theoretically it would be possible to create 2 files with different
content but the same md5 hash. But it's not easy to do so.

The better question is, why would you like to do that, what
do you need it for ?

[tolio]

[vegethssj5]

Originally Posted by tolio

mmm dunno if ill can do much with this stuff for scientists..

Our attack can find many real collisions which are composed of two 1024-bit
messages (M0,M1) and (M0


,M1

) ) with the original initial value IV0 of MD5:
IV0 : a0 = 0x67452301, b0 = 0xefcdab89, c0 = 0x98badcfe, d0 = 0x10325476.
We select a collision differential with two iterations as follows:
ΔH0
(M0,M


0) −→ ΔH1
(M1,M


1) −→ ΔH = 0
where
ΔM0 = M


0
−M0 = (0, 0, 0, 0, 231, 0, 0, 0, 0, 0, 0, 215, 0, 0, 231, 0)
ΔM1 = M


1
−M1 = (0, 0, 0, 0, 231, 0, 0, 0, 0, 0, 0,−215, 0, 0, 231, 0)
ΔH1 = (231, 231 + 225, 231 + 225, 231 + 225).

-------------------------

I want just some software that can do this work . In simple ,i want to elude server control on some save file edited that they would be original ..

[MoepMeep]

Hook the control function.

[Elektrochemie]

Forget it, patch the md5 check or what ever it is.

[vegethssj5]

i cant .. md5 check is online on server

[dready]

As long as the Checked file is on your pc, the hash has to be calculated there, or at least the data has to be transfered to the Server, in both ways you are able to manipulate it.