#!/usr/bin/env python2
# -*- coding: utf-8 -*-
"""
@author: Tanmoy Das Gupta, Sandeepan Sengupta, Tamojit Saha
"""
from configurator import configurator as cfgr
CHANNEL, PLANE, SCOPE, BUFFER = cfgr('setup.cfg')
def bitplane(image_file='image.tiff', DPI=1000, channel=CHANNEL, plane=PLANE):
"""
Usage:
bitplane('image.tiff', 1000)
bitplane('image.tiff', 500, 'R', 0)
"""
import os
from slicer import slicer as slc
import numpy as np
#from matplotlib.pyplot import imsave,imshow
import matplotlib.pyplot as plt
import matplotlib.cm as cm
base = os.path.basename(image_file)
bit_array = slc(image_file, channel, plane)
bit_array = np.reshape(bit_array, (-1, 512))
#imshow(bit_array)
name = os.path.splitext(base)[0]
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
"""
@author: Tanmoy Das Gupta, Sandeepan Sengupta, Tamojit Saha
"""
from numpy import uint8
from configurator import configurator as cfgr
CHANNEL, PLANE, SCOPE, BUFFER = cfgr('setup.cfg')
SIGMA, BETA, RHO, DT = cfgr('chaos.cfg')
def salt(key, space):
"""
Test usage:
salt(initial position of a chaotic system in Cartesian, no. of output bits)
salt([1, 0.2, -3], 64)
"""
if space < 0:
return None
from numpy import zeros, remainder
dt = DT
xs = zeros((space + 1, ))
ys = zeros((space + 1, ))
zs = zeros((space + 1, ))
xs[0], ys[0], zs[0] = key[0], key[1], key[2]
for i in xrange(space):
# -*- coding: utf-8 -*-
"""
@author: Sandeepan
"""
from configurator import configurator as cfgr
SIGMA, BETA, RHO, ALPHA, GAMMA, DT, MSG_FILE = cfgr('setup.cfg')
def hide(info):
from binascii import hexlify
from numpy import zeros
input_information = info
hex_data = hexlify(input_information)
temp = zeros(len(hex_data)).astype('str')
for i in range(len(hex_data)):
temp[i] = hex_data[i]
for j in range(len(temp)):
if temp[j] == '0': temp[j] = '0000'
if temp[j] == '1': temp[j] = '0001'
if temp[j] == '2': temp[j] = '0010'
if temp[j] == '3': temp[j] = '0011'
if temp[j] == '4': temp[j] = '0100'
if temp[j] == '5': temp[j] = '0101'
if temp[j] == '6': temp[j] = '0110'
if temp[j] == '7': temp[j] = '0111'
if temp[j] == '8': temp[j] = '1000'
if temp[j] == '9': temp[j] = '1001'
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
"""
@author: Tanmoy Das Gupta, Sandeepan Sengupta, Tamojit Saha
"""
from configurator import configurator as cfgr
SIGMA, BETA, RHO, DT = cfgr('chaos.cfg')
def lorenz(x, y, z):
"""
Test usage:
lorenz(x_position, y_position, z_position)
"""
sigma = SIGMA
beta = BETA
rho = RHO
x_dot = sigma * (y - x)
y_dot = x * (rho - z) - y
z_dot = x * y - beta * z
return x_dot, y_dot, z_dot
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
"""
@author: Tanmoy Das Gupta, Sandeepan Sengupta, Tamojit Saha
"""
import os
import numpy as np
from matplotlib.pyplot import imread, imsave
setup_file = 'setup.cfg'
from configurator import configurator as cfgr
CHANNEL, PLANE, SCOPE, BUFFER = cfgr(setup_file)
MSG_FILE = 'msg.txt'
IMAGE_FILE = 'image.tiff'
#==============================================================================
# Channel Auto-Selection Module
#==============================================================================
def validate(msg_file=MSG_FILE, image_file=IMAGE_FILE, channel=CHANNEL):
from coder import hide
msg_bin = hide(msg_file)
msg_length = len(msg_bin)
from entropy import ENTROPY
from analyze import analyze
address_r, chunk_r = analyze(msg_length, 'image.tiff', 'R')
