Function decrypt

recipes/Python/578062_Markov/recipe-578062.py:444–459

(bytes_obj, sudoku_key, boot_strap)

# boot_strap
#  - should be a proper "markov" bootstrap
def decrypt(bytes_obj, sudoku_key, boot_strap):
    _check_sudoku_key(sudoku_key)
    _check_boot_strap(boot_strap, sudoku_key)
    # make byte_map
    array = sorted(sudoku_key[0])
    byte_map = dict((byte, value) for value, byte in enumerate(array))
    # create two more arguments for decode
    grid = make_grid(sudoku_key)
    grid = make_decode_grid(grid, len(sudoku_key[0]))
    index = list(map(byte_map.__getitem__, boot_strap))
    # run the actual decoding algorithm and create reversed map
    code, index = _decode(bytes_obj, byte_map, grid, index, len(sudoku_key[0]))
    rev_map = dict(reversed(item) for item in byte_map.items())
    # fix the boot_strap and return the results
    boot_strap = bytes(rev_map[number] for number in index)
    return code, boot_strap

# string
#  - should be the string that you want decoded