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OTA: Adjust IV length for AES

Change-Id: I854c844418244c100c328f9e76c0f37850d3db00
---
M pySim/ota.py
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pySim/ota.py b/pySim/ota.py
index bc4b0a7..80c823e 100644
--- a/pySim/ota.py
+++ b/pySim/ota.py
@@ -154,7 +154,7 @@
 from Crypto.Hash import CMAC
 
 class OtaAlgo(abc.ABC):
-    iv = b'\x00\x00\x00\x00\x00\x00\x00\x00'
+    iv = property(lambda self: bytes([0] * self.blocksize))
     blocksize = None
     enum_name = None
 

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