diff --git a/moto/kms/models.py b/moto/kms/models.py
index 22f0039b2..cceb96342 100644
--- a/moto/kms/models.py
+++ b/moto/kms/models.py
@@ -9,6 +9,8 @@ from boto3 import Session
 from moto.core import BaseBackend, BaseModel
 from moto.core.utils import iso_8601_datetime_without_milliseconds
 
+from moto.iam.models import ACCOUNT_ID
+
 from .utils import decrypt, encrypt, generate_key_id, generate_master_key
 
 
@@ -21,11 +23,16 @@ class Key(BaseModel):
         self.description = description
         self.enabled = True
         self.region = region
-        self.account_id = "012345678912"
+        self.account_id = ACCOUNT_ID
         self.key_rotation_status = False
         self.deletion_date = None
         self.tags = tags or {}
         self.key_material = generate_master_key()
+        self.origin = "AWS_KMS"
+        self.key_manager = "CUSTOMER"
+        self.customer_master_key_spec = "SYMMETRIC_DEFAULT"
+        self.encryption_algorithms = ["SYMMETRIC_DEFAULT"]
+        self.signing_algorithms = None
 
     @property
     def physical_resource_id(self):
@@ -43,11 +50,16 @@ class Key(BaseModel):
                 "AWSAccountId": self.account_id,
                 "Arn": self.arn,
                 "CreationDate": iso_8601_datetime_without_milliseconds(datetime.now()),
+                "CustomerMasterKeySpec": self.customer_master_key_spec,
                 "Description": self.description,
                 "Enabled": self.enabled,
+                "EncryptionAlgorithms": self.encryption_algorithms,
                 "KeyId": self.id,
+                "KeyManager": self.key_manager,
                 "KeyUsage": self.key_usage,
                 "KeyState": self.key_state,
+                "Origin": self.origin,
+                "SigningAlgorithms": self.signing_algorithms,
             }
         }
         if self.key_state == "PendingDeletion":
diff --git a/tests/test_kms/test_kms.py b/tests/test_kms/test_kms.py
index 70fa68787..8c2843ee4 100644
--- a/tests/test_kms/test_kms.py
+++ b/tests/test_kms/test_kms.py
@@ -46,10 +46,23 @@ def test_create_key():
             Tags=[{"TagKey": "project", "TagValue": "moto"}],
         )
 
+        key["KeyMetadata"]["Arn"].should.equal(
+            "arn:aws:kms:us-east-1:123456789012:key/{}".format(
+                key["KeyMetadata"]["KeyId"]
+            )
+        )
+        key["KeyMetadata"]["AWSAccountId"].should.equal("123456789012")
+        key["KeyMetadata"]["CreationDate"].should.be.a(datetime)
+        key["KeyMetadata"]["CustomerMasterKeySpec"].should.equal("SYMMETRIC_DEFAULT")
         key["KeyMetadata"]["Description"].should.equal("my key")
+        key["KeyMetadata"]["Enabled"].should.be.ok
+        key["KeyMetadata"]["EncryptionAlgorithms"].should.equal(["SYMMETRIC_DEFAULT"])
+        key["KeyMetadata"]["KeyId"].should_not.be.empty
+        key["KeyMetadata"]["KeyManager"].should.equal("CUSTOMER")
+        key["KeyMetadata"]["KeyState"].should.equal("Enabled")
         key["KeyMetadata"]["KeyUsage"].should.equal("ENCRYPT_DECRYPT")
-        key["KeyMetadata"]["Enabled"].should.equal(True)
-        key["KeyMetadata"]["CreationDate"].should.be.a(date)
+        key["KeyMetadata"]["Origin"].should.equal("AWS_KMS")
+        key["KeyMetadata"].should_not.have.key("SigningAlgorithms")
 
 
 @mock_kms_deprecated