--- Werkzeug-0.8.3/werkzeug/contrib/cache.py
+++ Werkzeug-0.8.3/werkzeug/contrib/cache.py
@@ -625,7 +625,10 @@ class FileSystemCache(BaseCache):
                 pass
 
     def _get_filename(self, key):
-        hash = md5(key).hexdigest()
+        try:
+            hash = md5(key).hexdigest()
+        except ValueError as err:
+            raise ValueError, "MD5 is disabled in FIPS mode (%s)." % err
         return os.path.join(self._path, hash)
 
     def get(self, key):
--- Werkzeug-0.8.3/werkzeug/http.py
+++ Werkzeug-0.8.3/werkzeug/http.py
@@ -558,7 +558,10 @@ def parse_etags(value):
 
 def generate_etag(data):
     """Generate an etag for some data."""
-    return md5(data).hexdigest()
+    try:
+        return md5(data).hexdigest()
+    except ValueError as err:
+        raise ValueError, "MD5 is disabled in FIPS mode (%s)." % err
 
 
 def parse_date(value):
--- Werkzeug-0.8.3/werkzeug/security.py
+++ Werkzeug-0.8.3/werkzeug/security.py
@@ -72,7 +72,10 @@ def _hash_internal(method, salt, password):
             return None
         if isinstance(salt, unicode):
             salt = salt.encode('utf-8')
-        h = hmac.new(salt, None, _hash_mods[method])
+        try:
+            h = hmac.new(salt, None, _hash_mods[method])
+        except ValueError as err:
+            raise ValueError, "MD5 is disabled in FIPS mode (%s)." % err
     else:
         if method not in _hash_funcs:
             return None