MD5 sum build

[firebyrd10]

Is there a program that can build a file from a MD5 sum? This would make a lot of sense to use in back up because the check sum is only a kilo big. I can understand if it would me very slow but stil I would help me alot.

[firebyrd10]

if there is none for MD5 is there some other?

[garyng]

MD5 is only a checksum used to verify the integrity of file(s). It would be black magic if you can turn a MD5 number back to what it is calculated from.

bzip2 is the best you can get now.

[firebyrd10]

yea I figured that it wasn't possible(for now)
But couldn't hurt to ask.