Hide files in audio files (audio steganography)
Method: Use audio steganography to hide files inside audio files.
import wave
# Function to hide a file within an audio file
def hide_file(audio_file, file_to_hide, output_audio_file):
# Open the audio file
audio = wave.open(audio_file, “rb”)
frames = audio.readframes(-1)
audio.close()
# Open the file to hide
with open(file_to_hide, “rb”) as file:
data_to_hide = file.read()
# Ensure the audio file has enough space to hide the data
if len(data_to_hide) > len(frames):
print(“Error: The audio file does not have enough space to hide the data.”)
return
# Hide the data within the audio using LSB
frames_with_hidden_data = bytearray(frames)
for i in range(len(data_to_hide)):
frames_with_hidden_data[i] = (frames_with_hidden_data[i] & 254) | ((data_to_hide[i] >> 7) & 1)
# Write the frames with hidden data to the output audio file
audio = wave.open(output_audio_file, “wb”)
audio.setparams(audio.getparams())
audio.writeframes(frames_with_hidden_data)
audio.close()
print(f”File ‘{file_to_hide}’ hidden within ‘{audio_file}’ and saved as ‘{output_audio_file}’.”)
# Function to extract a hidden file from an audio file
def extract_hidden_file(audio_file, output_file):
audio = wave.open(audio_file, “rb”)
frames = audio.readframes(-1)
audio.close()
hidden_data = bytearray()
for i in range(len(frames)):
hidden_data.append(frames[i] & 1)
# Write the extracted data to the output file
with open(output_file, “wb”) as file:
file.write(hidden_data)
print(f”Hidden file extracted and saved as ‘{output_file}’.”)
# Example usage
if name == “main”:
# Hide a file within an audio file
hide_file(“audio.wav”, “file_to_hide.txt”, “output_audio_with_hidden_data.wav”)
# Extract the hidden file from the audio
extract_hidden_file(“output_audio_with_hidden_data.wav”, “extracted_hidden_file.txt”)
