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59 lines
2 KiB
Python
59 lines
2 KiB
Python
#!/usr/bin/env python
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# Stegano - Stéganô is a basic Python Steganography module.
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# Copyright (C) 2010-2024 Cédric Bonhomme - https://www.cedricbonhomme.org
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#
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# For more information : https://github.com/cedricbonhomme/Stegano
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>
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__author__ = "Cedric Bonhomme"
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__version__ = "$Revision: 0.2 $"
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__date__ = "$Date: 2010/10/01 $"
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__revision__ = "$Date: 2017/02/06 $"
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__license__ = "GPLv3"
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from typing import IO, Union
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import wave
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def hide(input_file: Union[str, IO[bytes]], message: str, output_file: Union[str, IO[bytes]]):
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"""
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Hide a message (string) in a .wav audio file.
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Use the lsb of each sample to hide the message string characters as ASCII values.
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The first eight bits are used for message_length of the string.
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"""
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message_length = len(message)
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assert message_length != 0, "message message_length is zero"
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# TODO messages in audio files could likely be much longer in most cases
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assert message_length < 255, "message is too long"
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output = wave.open(output_file, "wb")
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with wave.open(input_file, "rb") as input:
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pass
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# TODO
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def reveal(input_file: Union[str, IO[bytes]]):
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"""
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Find a message in an image.
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Check the lsb of each sample for hidden message characters (ASCII values).
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The first eight bits are used for message_length of the string.
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"""
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message = ""
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with wave.open(input_file, "rb") as input:
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pass
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# TODO
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return message
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