Fixed huge inaccuracies in the docs
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst
index 77d9791..b1b4048 100644
--- a/docs/primitives/symmetric-encryption.rst
+++ b/docs/primitives/symmetric-encryption.rst
@@ -61,15 +61,13 @@
This must be kept secret.
-Insecure Ciphers
-----------------
-
.. class:: cryptography.primitives.block.ciphers.TripleDES(key)
Triple DES (Data Encryption Standard), sometimes refered to as 3DES, is a
- block cipher standardized by NIST. Triple DES should be considered to be
- cryptographically broken and should not be used for new applications, old
- applications should strongly consider moving away from it.
+ block cipher standardized by NIST. Triple DES has known cryptoanalytic
+ flaws, however none of them currently enable a practical attack.
+ Nonetheless, Triples DES is not reccomended for new applications because it
+ is incredibly slow, old applications should consider moving away from it.
:param bytes key: The secret key, either ``64``, ``128``, or ``192`` bits
(note that DES functionally uses ``56``, ``112``, or