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-rw-r--r--cryptography/hazmat/primitives/hmac.py6
1 files changed, 1 insertions, 5 deletions
diff --git a/cryptography/hazmat/primitives/hmac.py b/cryptography/hazmat/primitives/hmac.py
index 08dfae01..618bccc5 100644
--- a/cryptography/hazmat/primitives/hmac.py
+++ b/cryptography/hazmat/primitives/hmac.py
@@ -22,15 +22,11 @@ from cryptography.hazmat.primitives import interfaces
@utils.register_interface(interfaces.HashContext)
class HMAC(object):
- def __init__(self, key, algorithm, ctx=None, backend=None):
+ def __init__(self, key, algorithm, backend, ctx=None):
if not isinstance(algorithm, interfaces.HashAlgorithm):
raise TypeError("Expected instance of interfaces.HashAlgorithm.")
self.algorithm = algorithm
- if backend is None:
- from cryptography.hazmat.bindings import _default_backend
- backend = _default_backend
-
self._backend = backend
self._key = key
if ctx is None: