pystegy 0.0.2

small steganography utility

stegy - Release 0.0.2

a small steganography utility that inserts text messages into images

lets start !

stegy = stegyImage()
message = "a secret message"
filepath = stegy.encode(message )

this code return filepath with './data/result.pgn' That randomly generated PNG-file contains your secret message.

you can decode hidden message in './data/result.pgn' with :

decoded  = stegy.decode(filepath)

return decoded str containing : a secret message

options

• dest :

  set the filepath of result by adding dest parameter to encode

  filepath = stegy.encode(message , dest = './tmp/my.png' )
  

  create PNG file according your dest parameter return filepath with './tmp/my.png'

• src :

  give your own image file by adding src parameter to encode

  filepath = stegy.encode(message , src = './srcImage/boat.jpg' )
  

  create PNG file according your dest parameter return filepath relative to a downscaled PNG-file build from your src

• topics : this parameter is inactive if scr parameter is set. give a topic list for randomly choosen image ( str comma-separated)

  filepath = stegy.encode(message , topics = 'cat,boat' )
  

  the generated PNG should represent either a 'cat' or a 'boat'

• key : a key for message encryption (override default one)

  a png generated with key parameter can only be decoded with the same key.

  filepath = stegy.encode("lorem ipsum sic dolores amet..." , key = 'MySecretKey' )
  decoded = stegy.decode(filepath , key = 'MySecretKey' )
  

Release Note v 0.0.2

Added 2 exceptions on 'decode'

• NoMessage exception : if given image have no message in it
• BadKey exception : if a message is found but the decode key doesn't fit.