diff --git a/little_boxes/linked_data_sig.py b/little_boxes/linked_data_sig.py
index 04adaca..b0d4866 100644
--- a/little_boxes/linked_data_sig.py
+++ b/little_boxes/linked_data_sig.py
@@ -56,10 +56,10 @@ def _doc_hash(doc):
     return h.hexdigest()
 
 
-def verify_signature(doc, pubkey):
+def verify_signature(doc, key: "Key"):
     to_be_signed = _options_hash(doc) + _doc_hash(doc)
     signature = doc["signature"]["signatureValue"]
-    signer = PKCS1_v1_5.new(pubkey)
+    signer = PKCS1_v1_5.new(key.pubkey or key.privkey)
     digest = SHA256.new()
     digest.update(to_be_signed.encode("utf-8"))
     return signer.verify(digest, base64.b64decode(signature))
diff --git a/tests/test_linked_data_sig.py b/tests/test_linked_data_sig.py
index e69de29..93cb2c0 100644
--- a/tests/test_linked_data_sig.py
+++ b/tests/test_linked_data_sig.py
@@ -0,0 +1,20 @@
+import json
+import logging
+
+from little_boxes import linked_data_sig
+from little_boxes.key import Key
+
+logging.basicConfig(level=logging.DEBUG)
+
+
+DOC = """{"type": "Create", "actor": "https://microblog.pub", "object": {"type": "Note", "sensitive": false, "cc": ["https://microblog.pub/followers"], "to": ["https://www.w3.org/ns/activitystreams#Public"], "content": "<p>Hello world!</p>", "tag": [], "source": {"mediaType": "text/markdown", "content": "Hello world!"}, "attributedTo": "https://microblog.pub", "published": "2018-05-21T15:51:59Z", "id": "https://microblog.pub/outbox/988179f13c78b3a7/activity", "url": "https://microblog.pub/note/988179f13c78b3a7", "replies": {"type": "OrderedCollection", "totalItems": 0, "first": "https://microblog.pub/outbox/988179f13c78b3a7/replies?page=first", "id": "https://microblog.pub/outbox/988179f13c78b3a7/replies"}, "likes": {"type": "OrderedCollection", "totalItems": 2, "first": "https://microblog.pub/outbox/988179f13c78b3a7/likes?page=first", "id": "https://microblog.pub/outbox/988179f13c78b3a7/likes"}, "shares": {"type": "OrderedCollection", "totalItems": 3, "first": "https://microblog.pub/outbox/988179f13c78b3a7/shares?page=first", "id": "https://microblog.pub/outbox/988179f13c78b3a7/shares"}}, "@context": ["https://www.w3.org/ns/activitystreams", "https://w3id.org/security/v1", {"Hashtag": "as:Hashtag", "sensitive": "as:sensitive"}], "published": "2018-05-21T15:51:59Z", "to": ["https://www.w3.org/ns/activitystreams#Public"], "cc": ["https://microblog.pub/followers"], "id": "https://microblog.pub/outbox/988179f13c78b3a7"}"""  # noqa: E501
+
+
+def test_linked_data_sig():
+    doc = json.loads(DOC)
+
+    k = Key("https://lol.com")
+    k.new()
+
+    linked_data_sig.generate_signature(doc, k)
+    assert linked_data_sig.verify_signature(doc, k)