[Psybadek]

wow way to bring up a near 2 year old topic...

[greg1996]

If there is a way of encoding AND every different text that is encoded has a different result there has to be a way of decoding

[Nico]

Originally Posted by greg1996

AND every different text that is encoded has a different result

This is precisely where your mistake is.

All strings, containing all types of characters, and independent of their lengths (I repeat that, independent of their lengths), are being converted into a 32 character long, hexadecimal string, when they're encoded to MD5. You could encode the bible into MD5 and it would turn into 32 characters (characters from a to f and 0 to 9... only). And you can take a single character, and would turn into 32 characters too.

That means, every MD5 string, has an infinite amount of possible "decoding" options, and thus, making proper decoding impossible.


Why would be still using ZIPs and RARs if everything could be compressed into 32 bytes? ;p

[greg1996]

ok I get it now but I calculated that there are about
340282367000000000000000000000000000000 possibilities in md5;
I found it on the net that there are about 4970000 characters in the bible.
So If you encode the bible and change 1 character the md5 code will change too

I created a code that tests all the possibilities but it only works with up to 4 characters of text and at 4 it takes about 5minutes to try the possibilities. you can try it here.
(characters it tests :'' ,'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'é', 'á', 'ű', 'ő', 'ú', 'ö', 'ü', 'ó', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '§', "'", '"', '~', 'ˇ', '+', '^', '!', '˘', '%', '°', '/', '˛', '=', '`', '˙', '(', ')', '´', '˝', '¨', '¸', '|', 'Ä', '€', '÷', 'Í', '×', 'ä', 'đ', 'Đ', '[', ']', 'í', 'ł', 'Ł', '$', 'ß', '¤', '<', '>', '#', '&', '@', '{', '}', ';', '?', ':', '.', '-', '_', ' ')

[End User]

Originally Posted by greg1996

So If you encode the bible and change 1 character the md5 code will change too

Yes, this is one of the characteristics of MD5. Any change in the input produces a change in the output.

[greg1996]

ok, but what happens if we try to encode a string that contains more than 340282367000000000000000000000000000000 characters?

[wirehopper]

Any string that large should be handled as a file, or broken into segments.

[End User]

Lol, any string that large should be stored off-planet.

[therocket954]

Originally Posted by greg1996

ok, but what happens if we try to encode a string that contains more than 340282367000000000000000000000000000000 characters?

That's 340.3 undecillion by the way... I just had nothing better to do finishing up the Friday workday, I had to look it up. hah!

[Jcbones]

Originally Posted by therocket954

That's 340.3 undecillion by the way... I just had nothing better to do finishing up the Friday workday, I had to look it up. hah!

Just 2 points off of my IQ...