Staticbit is a collection of scripts to encode data as static noise.

Requirements

The staticbit scripts require Python and NumPy.

To install these on a Debian GNU/Linux system:

$ sudo apt-get install python python-numpy

staticbit.py

Encode a file as static noise:

$ python staticbit.py -e foo.wav < staticbit.py

The script prompts for a key (a 32-bit number), reads from standard input, and outputs a WAVE file. Decode it:

$ python staticbit.py -d foo.wav

staticbyte.py

The staticbyte script is similar to staticbit but encodes bytes not bits. Its output is smaller but decoding takes much longer.

Puzzles

Puzzle 1

I have encoded two files of equal length:

$ python staticbit.py -e a.wav < README.md
$ wc README.md
       4      23     151 README.md
$ python -c "print('\x00' * 150)" | python staticbit.py -e b.wav

Download the files from the release named Puzzle 1.

Determine which file is which and prove it.

Puzzle 2

There is a message in the file puzzle2.wav. What does it say?

Download the file from the release named Puzzle 2.

Hint: The noise is the message and the message is the noise.

Puzzle 3

Like Puzzle 2 but using staticbyte instead of staticbit.

Download the file from the release named Puzzle 3.