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/Doc/library/zipfile.rst b/Doc/library/zipfile.rst
index f1cfc1b..e3c852b 100644
--- a/Doc/library/zipfile.rst
+++ b/Doc/library/zipfile.rst
@@ -21,7 +21,8 @@
 documentation). It can handle ZIP files that use the ZIP64 extensions
 (that is ZIP files that are more than 4 GByte in size).  It supports
 decryption of encrypted files in ZIP archives, but it currently cannot
-create an encrypted file.
+create an encrypted file.  Decryption is extremely slow as it is
+implemented in native python rather than C.
 
 For other archive formats, see the :mod:`bz2`, :mod:`gzip`, and
 :mod:`tarfile` modules.
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)