Re-ordered files.

stegano/exifHeader.py

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+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+
+# Stéganô - Stéganô is a basic Python Steganography module.
+# Copyright (C) 2010-2011  Cédric Bonhomme - http://cedricbonhomme.org/
+#
+# For more information : http://bitbucket.org/cedricbonhomme/stegano/
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>
+
+__author__ = "Cedric Bonhomme"
+__version__ = "$Revision: 0.1 $"
+__date__ = "$Date: 2010/03/24 $"
+__license__ = "GPLv3"
+
+# Thanks to: http://www.julesberman.info/spec2img.htm
+
+def hide(img, img_enc, copyright="http://bitbucket.org/cedricbonhomme/stegano", \
+            secret_message = None, secret_file = None):
+    """
+    """
+    import shutil
+    import datetime
+    from zlib import compress
+    from zlib import decompress
+    from base64 import b64encode
+    from exif.minimal_exif_writer import MinimalExifWriter
+
+    if secret_file != None:
+        with open(secret_file, "r") as f:
+            secret_file_content = f.read()
+    text = "\nImage annotation date: "
+    text = text + str(datetime.date.today())
+    text = text  + "\nImage description:\n"
+    if secret_file != None:
+        text = compress(b64encode(text + secret_file_content))
+    else:
+        text = compress(b64encode(text + secret_message))
+
+    try:
+        shutil.copy(img, img_enc)
+    except Exception as e:
+        print("Impossible to copy image:", e)
+        return
+
+    f = MinimalExifWriter(img_enc)
+    f.removeExif()
+    f.newImageDescription(text)
+    f.newCopyright(copyright, addYear = 1)
+    f.process()
+
+
+def reveal(img):
+    """
+    """
+    from base64 import b64decode
+    from zlib import decompress
+    from exif.minimal_exif_reader import MinimalExifReader
+    try:
+        g = MinimalExifReader(img)
+    except:
+        print("Impossible to read description.")
+        return
+    print(b64decode(decompress(g.imageDescription())))
+    print(("\nCopyright " + g.copyright()))
+    #print g.dateTimeOriginal()s
+
+
+if __name__ == "__main__":
+    # Point of entry in execution mode.
+    from optparse import OptionParser
+    parser = OptionParser(version=__version__)
+    parser.add_option('--hide', action='store_true', default=False,
+                      help="Hides a message in an image.")
+    parser.add_option('--reveal', action='store_true', default=False,
+                      help="Reveals the message hided in an image.")
+    # Original image
+    parser.add_option("-i", "--input", dest="input_image_file",
+                    help="Input image file.")
+    # Image containing the secret
+    parser.add_option("-o", "--output", dest="output_image_file",
+                    help="Output image containing the secret.")
+
+    # Secret raw message to hide
+    parser.add_option("-m", "--secret-message", dest="secret_message",
+                    help="Your raw secret message to hide.")
+
+    # Secret text file to hide.
+    parser.add_option("-f", "--secret-file", dest="secret_file",
+                    help="Your secret textt file to hide.")
+
+    parser.set_defaults(input_image_file = './pictures/Elisha-Cuthbert.jpg',
+                        output_image_file = './pictures/Elisha-Cuthbert_enc.jpg',
+                        secret_message = '', secret_file = '')
+
+    (options, args) = parser.parse_args()
+
+    if options.hide:
+        if options.secret_message != "" and options.secret_file == "":
+            hide(img=options.input_image_file, img_enc=options.output_image_file, \
+                    secret_message=options.secret_message)
+        elif options.secret_message == "" and options.secret_file != "":
+            hide(img=options.input_image_file, img_enc=options.output_image_file, \
+                    secret_file=options.secret_file)
+
+    elif options.reveal:
+        reveal(img=options.input_image_file)