73 lines
1.9 KiB
Python
73 lines
1.9 KiB
Python
from flask import Flask, request, send_file
|
|
#import numpy
|
|
from PIL import Image, ImageChops
|
|
from io import BytesIO
|
|
import numpy
|
|
|
|
app = Flask(__name__)
|
|
|
|
usage = """
|
|
Post image Data to /desteg and receive a copy of that image with the least significant bits XORed with system entropy
|
|
|
|
Example: curl -H "Content-Type: application/png" --data-binary @image.png http://localhost:5002/desteg -o image_destegged.png
|
|
|
|
Updated 2022-09-27
|
|
"""
|
|
|
|
@app.route("/desteg", methods=["GET"])
|
|
def get_desteg():
|
|
return usage
|
|
|
|
@app.route("/desteg", methods=["POST"])
|
|
def post_desteg():
|
|
|
|
image_string = BytesIO(request.data)
|
|
output_buffer = BytesIO()
|
|
|
|
try:
|
|
input_image = Image.open(image_string)
|
|
except IOError:
|
|
# insert relevant error return here
|
|
pass
|
|
|
|
|
|
|
|
# Create an array the same size
|
|
# Stuff it full of entropy
|
|
if (input_image.mode == "RGBA"):
|
|
entropy_array = numpy.random.rand(
|
|
input_image.size[1],
|
|
input_image.size[0],
|
|
4)*6
|
|
entropy_image = Image.fromarray(
|
|
entropy_array.astype('uint8'),
|
|
mode="RGBA")
|
|
elif (input_image.mode == "RGB"):
|
|
entropy_array = numpy.random.rand(
|
|
input_image.size[1],
|
|
input_image.size[0],
|
|
3)*6
|
|
entropy_image = Image.fromarray(
|
|
entropy_array.astype('uint8'), mode="RGB")
|
|
else:
|
|
# Insert relevant error return here
|
|
pass
|
|
|
|
# Add the entropy to input
|
|
output_image = ImageChops.add(input_image, entropy_image)
|
|
|
|
# save with same format as output
|
|
output_image.save(output_buffer,format=input_image.format)
|
|
|
|
#return buffer to start!
|
|
output_buffer.seek(0)
|
|
return send_file(output_buffer,
|
|
mimetype="image/" + input_image.format.lower())
|
|
|
|
@app.route("/")
|
|
def root():
|
|
return usage
|
|
|
|
if __name__ == '__main__':
|
|
app.run(port='5002',host="0.0.0.0")
|