Document that zipfile decryption is insanely slow and fix a typo and
blatant lie in a docstring (it is not useful for security regardless of
how you spell it).
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index 6feabbf..9f5669e 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -302,7 +302,7 @@
 
     ZIP supports a password-based form of encryption. Even though known
     plaintext attacks have been found against it, it is still useful
-    for low-level securicy.
+    to be able to get data out of such a file.
 
     Usage:
         zd = _ZipDecrypter(mypwd)