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added a shift parameter for the lsbset module.

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Cédric Bonhomme 2018-12-18 21:38:25 +01:00
parent a86361dd27
commit ea2de8142c
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6 changed files with 47 additions and 15 deletions
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10
bin/stegano-lsb-set
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@ -55,6 +55,8 @@ parser_hide.add_argument("-g", "--generator", dest="generator_function",
choices=[generator[0] for generator in \
inspect.getmembers(generators, inspect.isfunction)],
required=True, help="Generator")
parser_hide.add_argument("-s", "--shift", dest="shift",
default=0, help="Shift for the generator")
group_secret = parser_hide.add_mutually_exclusive_group(required=True)
# Non binary secret message to hide
@ -81,6 +83,8 @@ parser_reveal.add_argument("-g", "--generator", dest="generator_function",
choices=[generator[0] for generator in \
inspect.getmembers(generators, inspect.isfunction)],
required=True, help="Generator")
parser_reveal.add_argument("-s", "--shift", dest="shift",
default=0, help="Shift for the generator")
parser_reveal.add_argument("-o", dest="secret_binary",
help="Output for the binary secret (Text or any binary file).")
@ -111,7 +115,8 @@ if arguments.command == 'hide':
elif arguments.secret_file != "":
secret = tools.binary2base64(arguments.secret_file)
img_encoded = lsbset.hide(arguments.input_image_file, secret, generator)
img_encoded = lsbset.hide(arguments.input_image_file, secret, generator,
int(arguments.shift))
try:
img_encoded.save(arguments.output_image_file)
except Exception as e:
@ -120,7 +125,8 @@ if arguments.command == 'hide':
elif arguments.command == 'reveal':
try:
secret = lsbset.reveal(arguments.input_image_file, generator)
secret = lsbset.reveal(arguments.input_image_file, generator,
int(arguments.shift))
except IndexError:
print("Impossible to detect message.")
exit(0)