How did they do it?

Hex22 · Postby **Hex22** » Wed Mar 24, 2004 5:09 pm

I'm reading here about world.dat, and I wonder, how have they done it? How can this file be simultaneously
1)An essential file for Uplink
2)An encrypted mp3 file
3)Some 20 keys to OTP?
How's that?

Stewsburntmonkey · Postby **Stewsburntmonkey** » Wed Mar 24, 2004 6:50 pm

1) I would have to check the code, but I think Uplink just makes sure its there. I don't think it actually contains game information ( I could be wrong ). I always assumed that IV requires it to bulk up size of the program so that it is less apt to be pirated.

2) That it is.

3) Anything binary data can be a key to OTP, so that's no real trick. :)

Hex22 · Postby **Hex22** » Wed Mar 24, 2004 6:57 pm

Yes, but it's not just a one key, there are several keys!
Another thought: is there a program that can make any binary data into sound files? I'd like to know how 'War and Peace' sounds like.

Stewsburntmonkey · Postby **Stewsburntmonkey** » Wed Mar 24, 2004 7:01 pm

All they really did was concatinate (stick together all the .jpg files) and then OTP it like one big file. Its actually rather simple, but you would need to know how OTP works for it to make sense. You could certainly convert any binary data into a sound file. I don't know of any programs off hand, though. :)

Darksun · Postby **Darksun** » Thu Mar 25, 2004 1:40 pm

Uplink checks the filesize of world.dat to check it is present and not been hacked at to reduce the size for piracy

And I saw a piece of software a while back that would convert text into music, though it always came out with pretty freaky stuff. Can't remember what it was called, sorry

Hex22 · Postby **Hex22** » Thu Mar 25, 2004 2:18 pm

If you'll rmember the name of the software, tell me, I've asked AllExperts.com twice, and they didn't know.

Miah · Postby **Miah** » Fri Mar 26, 2004 5:54 am

i don't think it would be that hard...

just stick an mp3 header/footer on, right?

Stewsburntmonkey · Postby **Stewsburntmonkey** » Fri Mar 26, 2004 6:54 am

I think you would probably have to use a more raw format, like wave or something. MP3s use rather sufisticated encoding which I think would prohibit random data being used. :)

Miah · Postby **Miah** » Fri Mar 26, 2004 9:32 pm

ah right. .wav it, then mp3 it...

Hex22 · Postby **Hex22** » Sat Mar 27, 2004 5:35 pm

Ahem.... I don't know how to .wav it. I've changed it from *****.txt to *****.wav, but it doesn't work. how do I do it properly? I know nothing about headers.

Stewsburntmonkey · Postby **Stewsburntmonkey** » Sat Mar 27, 2004 9:51 pm

You need to look at a page like [url=ccrma-www.stanford.edu/courses/422/projects/WaveFormat/]this[/url]. :)

Hex22 · Postby **Hex22** » Sun Mar 28, 2004 1:25 pm

Thanks for the advice, only that page doesn't work.
So, how can I do it? How do I add a WAV header?

Stewsburntmonkey · Postby **Stewsburntmonkey** » Sun Mar 28, 2004 7:27 pm

Hmm. . . It worked when I posted it, maybe Stanford is doing server maintence. Anyway you will likely need a Hex editor to add the header to the file. :)

Hex22 · Postby **Hex22** » Sun Mar 28, 2004 7:30 pm

Well, that's a problem: in spite of my name, I haven't got any experience with Hex Editing. Well, I'll try!

Jaygee · Postby **Jaygee** » Tue Apr 13, 2004 10:21 pm

Sorry, I'm a n00b, what is OTP?

How did they do it?

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