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Raise an exception if the message to hide is too long. resolves #1

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Cédric Bonhomme 2013-02-10 13:22:34 +01:00
parent 60f9752dc1
commit e2210bab54
1 changed files with 3 additions and 3 deletions
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4
stegano/slsb.py
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@ -2,7 +2,7 @@
#-*- coding: utf-8 -*- #-*- coding: utf-8 -*-
# Stéganô - Stéganô is a basic Python Steganography module. # Stéganô - Stéganô is a basic Python Steganography module.
# Copyright (C) 2010-2013 Cédric Bonhomme - http://cedricbonhomme.org/ # Copyright (C) 2010-2011 Cédric Bonhomme - http://cedricbonhomme.org/
# #
# For more information : http://bitbucket.org/cedricbonhomme/stegano/ # For more information : http://bitbucket.org/cedricbonhomme/stegano/
# #
@ -46,7 +46,7 @@ def hide(input_image_file, message):
npixels = width * height npixels = width * height
if len(message_bits) > npixels * 3: if len(message_bits) > npixels * 3:
return """Too long message (%s > %s).""" % (len(message_bits), npixels * 3) raise Exception("""The message you want to hide is too long (%s > %s).""" % (len(message_bits), npixels * 3))
for row in xrange(height): for row in xrange(height):
for col in xrange(width): for col in xrange(width):