fix

Author: lucasmcdonald3

codebuild/py312/decrypt_hkeyring_with_net.yml

@@ -23,7 +23,7 @@ phases:
       - unzip 312_hkeyring_manifest.zip
 
       # Download published .NET ESDK so we don't have to build from source
-      dotnet add package AWS.Cryptography.EncryptionSDK --version 4.0.1
+      - dotnet add package AWS.Cryptography.EncryptionSDK --version 4.0.1
 
       # Clone SDK-Dafny repo to get test vectors runner
       - git clone [email protected]:aws/aws-encryption-sdk-dafny.git

test_vector_handlers/src/awses_test_vectors/manifests/full_message/decrypt.py

@@ -309,7 +309,8 @@ def master_key_provider_fn():
             encryption_context = {}
 
         # MPL test vectors add CMM types to the test vectors manifests
-        if "cmm" in scenario:
+        if "cmm" in scenario \
+                and scenario["cmm"] is not None:
             if scenario["cmm"] == "Default":
                 # Master keys and keyrings can handle default CMM
                 cmm_type = scenario["cmm"]