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-rw-r--r--docs/hazmat/primitives/mac/hmac.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/hazmat/primitives/mac/hmac.rst b/docs/hazmat/primitives/mac/hmac.rst
index 11b10735..e20a4034 100644
--- a/docs/hazmat/primitives/mac/hmac.rst
+++ b/docs/hazmat/primitives/mac/hmac.rst
@@ -38,6 +38,10 @@ of a message.
:class:`~cryptography.exceptions.UnsupportedAlgorithm` exception will be
raised.
+ If ``algorithm`` isn't a
+ :class:`~cryptography.hazmat.primitives.interfaces.HashAlgorithm` provider
+ then ``TypeError`` will be raised.
+
To check that a given signature is correct use the :meth:`verify` method.
You will receive an exception if the signature is wrong: