資訊隱藏(steganography)軟體steghide

print("這行可是python，Jupyter Notebook真是魅力無窮,下面開始是linux系統指令，安裝steghide....")

!lsb_release -a

!pip install pydub

from google.colab import files
files.upload()

from IPython.display import Audio

from pydub import AudioSegment
sound = AudioSegment.from_mp3('musik.mp3')
sound.export('musik.wav', format="wav")

Audio('musik.wav')

with open('secret.txt', 'w') as f:
  x=input('輸入一小段文字，藏進檔案中：\r\n')
  f.write(x)

!cat secret.txt

"""steghide支援jpg, bmp, wav and au，其他不支援"""

!sudo apt install steghide


%%shell
steghide embed -cf musik.wav -ef secret.txt

Audio('musik.wav')

!steghide --help


%%shell
steghide --info musik.wav -p 123456


%%shell
rm secret.txt
ls


%%shell
steghide extract -sf musik.wav

!cat secret.txt