This is the directory for Problem set 2, CPSC 467b, Spring 2013.

The src directory contains working code for the SnakeOil cryptosystem.
It also contains partial code for a brute force key finder.  However,
two functions needed by analyze.cpp are missing, so it won't compile.

The data directory contains three kinds of files:

1) keyshares is a file of 100 key shares that was used by all of the
   encryptions.
2) The *.enc files are ciphertexts encrypted by SnakeOil using keyshares
   but with different key indices.
3) The *.dat files are byte frequency tables derived from various sources.
   merrywifes.dat is from the Shakespeare play, "The Merry Wifes of Windsor".
   ulysses.dat is from the James Joyce novel, "Ulysses".
   uniform.dat is the uniform distribution.
   space.dat has only a single sample at position 32, which is the ASCII
       code for space.
4) sample is the plaintext that was encrypted to yield the ciphertext
       sample.enc.  It was encrypted using indices 4 and 31.