fix: tests moving to unprotected header for non AEAD cipher

Author: kentakayama

tests/test_recipient.py

@@ -832,13 +832,13 @@ def test_recipients_hpke(self, rsk1, rsk2, enc_alg):
                 "y": "BGU5soLgsu_y7GN2I3EPUXS9EZ7Sw0qif-V70JtInFI",
             }
         )
-        r = Recipient.new(protected={1: 35}, recipient_key=rpk)
+        r = Recipient.new(unprotected={1: 35}, recipient_key=rpk)
         r.encode(enc_key.key)
         sender = COSE.new()
         encoded = sender.encode_and_encrypt(
             b"This is the content.",
             enc_key,
-            protected={"alg": enc_alg},
+            unprotected={"alg": enc_alg},
             recipients=[r],
         )
         recipient = COSE.new()
@@ -861,7 +861,7 @@ def test_recipients_ecdh_es(self, key_agreement_alg, key_agreement_alg_id, kw_al
             "alg": kw_alg,
             "supp_pub": {
                 "key_data_length": len(enc_key.key) * 8,
-                "protected": {1: key_agreement_alg_id},
+                "protected": {},
             },
         }
 
@@ -886,15 +886,15 @@ def test_recipients_ecdh_es(self, key_agreement_alg, key_agreement_alg_id, kw_al
                 "y": "BGU5soLgsu_y7GN2I3EPUXS9EZ7Sw0qif-V70JtInFI",
             }
         )
-        r = Recipient.new(protected={"alg": key_agreement_alg}, sender_key=rsk1, recipient_key=rpk2, context=context)
+        r = Recipient.new(unprotected={"alg": key_agreement_alg}, sender_key=rsk1, recipient_key=rpk2, context=context)
 
         nonce = enc_key.generate_nonce()
         sender = COSE.new()
         encoded = sender.encode(
             b"Hello world!",
             enc_key,
-            protected={"alg": enc_alg},
-            unprotected={"iv": nonce},
+            protected={},
+            unprotected={"alg": enc_alg, "iv": nonce},
             recipients=[r],
         )