initial scripts

entropy-rng-opencv.py

@@ -0,0 +1,27 @@
+import cv2
+import hashlib
+import secrets
+
+def fetch_frame_opencv(url):
+    cap = cv2.VideoCapture(url)
+    ret, frame = cap.read()
+    cap.release()
+    if not ret:
+        raise ValueError("Failed to fetch frame.")
+    return frame
+
+def generate_random_numbers(frame, bit_lengths=[16, 32, 64, 128, 256]):
+    _, img_encoded = cv2.imencode('.jpg', frame)
+    img_bytes = img_encoded.tobytes()
+    entropy = hashlib.sha256(img_bytes).digest()
+    # Use secrets.randbits directly
+    return {length: secrets.randbits(length) for length in bit_lengths}
+
+url = "http://192.168.0.200/mjpg/video.mjpg"
+try:
+    frame = fetch_frame_opencv(url)
+    random_numbers = generate_random_numbers(frame)
+    for length, number in random_numbers.items():
+        print(f"{length}-bit random number: {hex(number)}")
+except Exception as e:
+    print(f"Error: {e}")