I recall a version that was an ascii string that you could save as a file with a .zip extension and it would unzip into the source.

I think that's in the steganography wing here: https://www.cs.cmu.edu/~dst/DeCSS/Gallery/Stego/index.html

> This gif file contributed by Robert de Bath, contains a surprise inside. Mr. Bath writes: "There are two tiny facts about GIF files and ZIP files you might like to know about: GIF files have their length defined at the start of the file; any bytes after are ignored. ZIP files have a table at the end; anything at the start of the file is ignored. The result is that a file can be both a GIF and a ZIP, just change the extension."

I also like the gallery, which contains a variety of code-golf like discussions of the edge cases of US 1st ammendment protections.

http://www.cs.cmu.edu/~dst/DeCSS/Gallery/

And I remember someone was selling t-shirts with that string!

I had the RSA "this shirt is a munition" t-shirt that was technically illegal to take outside of the United States due to export controls.

Though, it wasn't 1/100th as ugly as this block of graffiti spam.

http://www.cypherspace.org/adam/uk-shirt.html

Check out the gallery of css

http://www.cs.cmu.edu/~dst/DeCSS/Gallery/

k·256^211 + 99

...where k is the decimal representation of the original compressed DeCSS file.

(just for context)

Note the implication: the prime basically is the original program represented as a binary number, then shifted 211 bytes (i.e., 00000000 appended 211 times). Then 99 is added to that number. Note that 99 is representable by a single byte.

Consequenly, if you take that prime number and chop off the last 211 bytes, you end up with the original program.

That's it I'm calling the cops!