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-rw-r--r--docs/hazmat/primitives/symmetric-encryption.rst11
1 files changed, 11 insertions, 0 deletions
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst
index 8b047b8c..8c6087e3 100644
--- a/docs/hazmat/primitives/symmetric-encryption.rst
+++ b/docs/hazmat/primitives/symmetric-encryption.rst
@@ -690,6 +690,17 @@ Interfaces used by the symmetric cipher modes described in
Exact requirements of the tag are described by the documentation of
individual modes.
+Exceptions
+~~~~~~~~~~
+
+.. currentmodule:: cryptography.exceptions
+
+
+.. class:: InvalidTag
+
+ This is raised if an authenticated encryption tag fails to verify during
+ decryption.
+
.. _`described by Colin Percival`: http://www.daemonology.net/blog/2009-06-11-cryptographic-right-answers.html