I made a little module that I have ended up using a lot. It can encode strings of text into RGB color values, store them as pixels on a .png image, and then save that image for consistent storage. Once you send the message to someone, they can use the decode function and it will iterate over the darkened pixels, and return the string of text that that image has stored in itself. Pretty cool?
Here is the source...
# coding: utf-8
import Image
def bencode(filename,plain_text): # returns true or false depending on if it successfully saves the photo.
try:
coded_image_width = len(plain_text)*5
bioMessage = Image.new("RGB",(coded_image_width,1),(255,0,0))
bioMessageLoaded = bioMessage.load()
newPixelPosition = [0,0]
for char in plain_text:
asciiEdition = ord(char)
bioMessageLoaded[newPixelPosition[0],0] = (asciiEdition,asciiEdition,asciiEdition)
newPixelPosition[0] += 5
bioMessage.save(filename)
return True
except:
return False
def bedecode(coded_image): # returns a string of the decoded message.
encodedPNG = Image.open(coded_image)
encodedPNGLoaded = encodedPNG
endtxt = ""
newGrabPosition = [0,0]
charsAmount = encodedPNG.size[0] / 5
for reading in range(charsAmount):
pixel = encodedPNG.getpixel((newGrabPosition[0],0))
endtxt += chr(pixel[0])
newGrabPosition[0] += 5
return endtxt
