diff --git a/utils/dummy-keychain.cpp b/utils/dummy-keychain.cpp
index 02a3fad..3f62a4e 100644
--- a/utils/dummy-keychain.cpp
+++ b/utils/dummy-keychain.cpp
@@ -251,6 +251,13 @@
   return make_shared<Buffer>(DUMMY_SIGNATURE, sizeof(DUMMY_SIGNATURE));
 }
 
+bool
+DummyKeyHandle::doVerify(DigestAlgorithm digestAlgorithm, const uint8_t* buf, size_t bufLen,
+                         const uint8_t* sig, size_t sigLen) const
+{
+  throw Error("Not supported");
+}
+
 ConstBufferPtr
 DummyKeyHandle::doDecrypt(const uint8_t* cipherText, size_t cipherTextLen) const
 {
@@ -329,6 +336,12 @@
   throw Error("Not supported");
 }
 
+void
+DummyTpm::doImportKey(const Name& keyName, shared_ptr<transform::PrivateKey> key)
+{
+  throw Error("Not supported");
+}
+
 std::string
 DummyTpm::getScheme()
 {