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Image encryption and decryption

task2.py

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+from PIL import Image
+import random
+
+def encrypt_image(image_path, output_path):
+    try:
+        image = Image.open(image_path)
+        pixels = image.load()
+        width, height = image.size
+
+        # Apply a simple pixel shift for encryption
+        for i in range(width):
+            for j in range(height):
+                r, g, b = pixels[i, j]
+                # Simple transformation: shift RGB values
+                r = (r + 50) % 256
+                g = (g + 100) % 256
+                b = (b + 150) % 256
+                pixels[i, j] = (r, g, b)
+
+        image.save(output_path)
+        print(f"Image encrypted and saved as {output_path}")
+
+    except FileNotFoundError:
+        print(f"File not found: {image_path}. Please check the file path and try again.")
+
+def decrypt_image(encrypted_path, output_path):
+    try:
+        image = Image.open(encrypted_path)
+        pixels = image.load()
+        width, height = image.size
+
+        # Reverse the simple pixel shift for decryption
+        for i in range(width):
+            for j in range(height):
+                r, g, b = pixels[i, j]
+                r = (r - 50) % 256
+                g = (g - 100) % 256
+                b = (b - 150) % 256
+                pixels[i, j] = (r, g, b)
+
+        image.save(output_path)
+        print(f"Image decrypted and saved as {output_path}")
+
+    except FileNotFoundError:
+        print(f"File not found: {encrypted_path}. Please check the file path and try again.")
+
+# Use paths for testing
+image_path = r'C:\Users\welcome\Downloads\images.jpg'
+encrypted_image_path = r'C:\Users\welcome\Downloads\encrypted_image.png'
+decrypted_image_path = r'C:\Users\welcome\Downloads\decrypted_image.png'
+
+# Encrypt and decrypt the image
+encrypt_image(image_path, encrypted_image_path)
+decrypt_image(encrypted_image_path, decrypted_image_path)