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+Glossary
+========
+
+.. glossary::
+
+    plaintext
+        User-readable data you care about.
+
+    ciphertext
+        The encoded data, it's not user readable. Potential attackers are able
+        to see this.
+
+    encryption
+        The process of converting plaintext to ciphertext.
+
+    decryption
+        The process of converting ciphertext to plaintext.
+
+    key
+        Secret data is encoded with a function using this key. Sometimes
+        multiple keys are used.
+
+    symmetric cryptography
+        Cryptographic operations where encryption and decryption use the same
+        key.
+
+    asymmetric cryptography
+        Cryptographic operations where encryption and decryption use different
+        keys. There are seperate encryption and decryption keys.