bytes input for SigningKey.sign_digest()

Author: tomato42

src/ecdsa/keys.py

@@ -1123,6 +1123,7 @@ def sign_digest(self, digest, entropy=None, sigencode=sigencode_string,
         :return: encoded signature for the `digest` hash
         :rtype: bytes or sigencode function dependant type
         """
+        digest = normalise_bytes(digest)
         if len(digest) > self.curve.baselen:
             raise BadDigestError("this curve (%s) is too short "
                                  "for your digest (%d)" % (self.curve.name,

src/ecdsa/test_keys.py

@@ -301,3 +301,10 @@ def test_SigningKey_sign(convert):
     sig = sk.sign(convert(data))
 
     vk.verify(sig, data)
+
+
+@pytest.mark.parametrize("convert", converters)
+def test_SigningKey_sign_digest(convert):
+    sig = sk.sign_digest(convert(data_hash))
+
+    vk.verify(sig, data)