Update app.py

app.py

@@ -41,14 +41,25 @@ def save_hash(hash_code, description=""):
 # Function to check image authenticity
 def check_authenticity(image):
     hash_code = hash_image(image)
-    with open("hash.txt", "r") as file:
-        hashes = file.readlines()
-        for line in hashes:
-            saved_hash, description = line.strip().split(': ', 1)
-            if saved_hash == hash_code:
-                return f"Image is authentic. Description: {description}"
+    try:
+        with open("hash.txt", "r") as file:
+            hashes = file.readlines()
+            for line in hashes:
+                parts = line.strip().split(': ', 1)
+                if len(parts) == 2:
+                    saved_hash, description = parts
+                    if saved_hash == hash_code:
+                        return f"Image is authentic. Description: {description}"
+                else:
+                    # Handle the case where there is no ':' or description
+                    saved_hash = parts[0]
+                    if saved_hash == hash_code:
+                        return "Image is authentic, but no description provided."
+    except FileNotFoundError:
+        return "Hash file not found. Please process an image first."
     return "Image is new or modified."
 
+
 def process_image(image, description):
     hash_code1 = hash_image(image)
     qr_img = generate_qr_code(hash_code1)