Merge pull request #604 from reaperhulk/cast5-cbc-and-more

CAST5 Support (ECB, CBC, CFB, OFB)

1 files changed, 10 insertions, 1 deletions

diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst
index 85d8e8e3..210e6567 100644
--- a/docs/hazmat/primitives/symmetric-encryption.rst
+++ b/docs/hazmat/primitives/symmetric-encryption.rst
@@ -99,7 +99,6 @@ Algorithms
     :param bytes key: The secret key, either ``128``, ``192``, or ``256`` bits.
                       This must be kept secret.
 
-
 .. class:: TripleDES(key)
 
     Triple DES (Data Encryption Standard), sometimes referred to as 3DES, is a
@@ -116,6 +115,15 @@ Algorithms
                       ``56`` bits long), they can simply be concatenated to
                       produce the full key. This must be kept secret.
 
+.. class:: CAST5(key)
+
+    CAST5 (also known as CAST-128) is a block cipher approved for use in the
+    Canadian government by the `Communications Security Establishment`_. It is
+    a variable key length cipher and supports keys from 40-128 bits in length.
+
+    :param bytes key: The secret key, 40-128 bits in length (in increments of
+                      8).  This must be kept secret.
+
 Weak Ciphers
 ------------
 
@@ -469,3 +477,4 @@ Interfaces
 .. _`described by Colin Percival`: http://www.daemonology.net/blog/2009-06-11-cryptographic-right-answers.html
 .. _`recommends 96-bit IV length`: http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-spec.pdf
 .. _`NIST SP-800-38D`: http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
+.. _`Communications Security Establishment`: http://www.cse-cst.gc.ca