Lose the bit about passwords.
diff --git a/docs/hazmat/primitives/key-derivation-functions.rst b/docs/hazmat/primitives/key-derivation-functions.rst
index b74dc41..5c3485c 100644
--- a/docs/hazmat/primitives/key-derivation-functions.rst
+++ b/docs/hazmat/primitives/key-derivation-functions.rst
@@ -184,9 +184,7 @@
This checks whether deriving a new key from the supplied
``key_material`` generates the same key as the ``expected_key``, and
- raises an exception if they do not match. This can be used for
- checking whether the password a user provides matches the stored derived
- key.
+ raises an exception if they do not match.
.. _`NIST SP 800-132`: http://csrc.nist.gov/publications/nistpubs/800-132/nist-sp800-132.pdf
.. _`Password Storage Cheat Sheet`: https://www.owasp.org/index.php/Password_Storage_Cheat_Sheet