diff --git a/acme/acme/messages_test.py b/acme/acme/messages_test.py
index 0e2d8c62d..b68833baa 100644
--- a/acme/acme/messages_test.py
+++ b/acme/acme/messages_test.py
@@ -174,6 +174,24 @@ class DirectoryTest(unittest.TestCase):
         self.assertTrue(result)
 
 
+class ExternalAccountBindingTest(unittest.TestCase):
+    def setUp(self):
+        from acme.messages import Directory
+        self.key = jose.jwk.JWKRSA(key=KEY.public_key())
+        self.kid = "kid-for-testing"
+        self.hmac_key = "hmac-key-for-testing"
+        self.dir = Directory({
+            'newAccount': 'http://url/acme/new-account',
+        })
+
+    def test_from_data(self):
+        from acme.messages import ExternalAccountBinding
+        eab = ExternalAccountBinding.from_data(self.key, self.kid, self.hmac_key, self.dir)
+
+        self.assertEqual(len(eab), 3)
+        self.assertEqual(sorted(eab.keys()), sorted(['protected', 'payload', 'signature']))
+
+
 class RegistrationTest(unittest.TestCase):
     """Tests for acme.messages.Registration."""
 
@@ -205,6 +223,21 @@ class RegistrationTest(unittest.TestCase):
             'mailto:admin@foo.com',
         ))
 
+    def test_new_registration_from_data_with_eab(self):
+        from acme.messages import NewRegistration, ExternalAccountBinding, Directory
+        key = jose.jwk.JWKRSA(key=KEY.public_key())
+        kid = "kid-for-testing"
+        hmac_key = "hmac-key-for-testing"
+        directory = Directory({
+            'newAccount': 'http://url/acme/new-account',
+        })
+        eab = ExternalAccountBinding.from_data(key, kid, hmac_key, directory)
+        reg = NewRegistration.from_data(email='admin@foo.com', external_account_binding=eab)
+        self.assertEqual(reg.contact, (
+            'mailto:admin@foo.com',
+        ))
+        self.assertEqual(sorted(reg.external_account_binding.keys()), sorted(['protected', 'payload', 'signature']))
+
     def test_phones(self):
         self.assertEqual(('1234',), self.reg.phones)