From a31e2f1f810882d206449654ff9bf6cf6913f0b6 Mon Sep 17 00:00:00 2001
From: cedricbonhomme <devnull@localhost>
Date: Thu, 24 Mar 2011 09:15:32 +0100
Subject: [PATCH] The message is encoded in base 64.

---
 exif-header.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/exif-header.py b/exif-header.py
index 25d360e..b5bfc3c 100644
--- a/exif-header.py
+++ b/exif-header.py
@@ -26,12 +26,12 @@ __license__ = "GPLv3"
 
 # Thanks to: http://www.julesberman.info/spec2img.htm
 
-
 def hide(img, img_enc, copyright="http://bitbucket.org/cedricbonhomme/stegano"):
     """
     """
     import shutil
     import datetime
+    import zlib.compress
     from base64 import b64encode
     from exif.minimal_exif_writer import MinimalExifWriter
 
@@ -39,7 +39,7 @@ def hide(img, img_enc, copyright="http://bitbucket.org/cedricbonhomme/stegano"):
     text = "\nImage annotation date: "
     text = text + str(datetime.date.today())
     text = text  + "\nImage description:\n"
-    text = b64encode(text + file.read())
+    text = zlib.compress(b64encode(text + file.read()))
     file.close()
 
     try:
@@ -59,13 +59,14 @@ def reveal(img):
     """
     """
     from base64 import b64decode
+    import zlib.decompress
     from exif.minimal_exif_reader import MinimalExifReader
     try:
         g = MinimalExifReader(img)
     except:
         print("Impossible to read description.")
         return
-    print(b64decode(g.imageDescription()))
+    print(zlib.decompress(b64decode(g.imageDescription())))
     print(("\nCopyright " + g.copyright()))
     #print g.dateTimeOriginal()s