Fix a few typos and add a backport (compat) for hex2bin()
diff --git a/user_guide_src/source/libraries/encryption.rst b/user_guide_src/source/libraries/encryption.rst
index 5d92b10..f29ebf4 100644
--- a/user_guide_src/source/libraries/encryption.rst
+++ b/user_guide_src/source/libraries/encryption.rst
@@ -5,13 +5,13 @@
The Encryption Library provides two-way data encryption. To do so in
a cryptographically secure way, it utilizes PHP extensions that are
unfortunately not always available on all systems.
-You must meet one of the following dependancies in order to use this
+You must meet one of the following dependencies in order to use this
library:
- `OpenSSL <http://php.net/openssl>`_ (and PHP 5.3.3)
- `MCrypt <http://php.net/mcrypt>`_ (and `MCRYPT_DEV_URANDOM` availability)
-If neither of the above dependancies is met, we simply cannot offer
+If neither of the above dependencies is met, we simply cannot offer
you a good enough implementation to meet the high standards required
for proper cryptography.