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-rw-r--r--cryptech/libhal.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/cryptech/libhal.py b/cryptech/libhal.py
index 39fa826..8666d15 100644
--- a/cryptech/libhal.py
+++ b/cryptech/libhal.py
@@ -534,7 +534,9 @@ class HSM(object):
with self.rpc(RPC_FUNC_HASH_GET_ALGORITHM, handle) as r:
return HALDigestAlgorithm.index[r.unpack_uint()]
- def hash_initialize(self, alg, key = "", client = 0, session = 0, mixed_mode = None):
+ def hash_initialize(self, alg, key = None, client = 0, session = 0, mixed_mode = None):
+ if key is None:
+ key = ""
if mixed_mode is None:
mixed_mode = self.mixed_mode
if mixed_mode: