diff --git a/trusty/keymaster/include/trusty_keymaster/TrustyKeyMintDevice.h b/trusty/keymaster/include/trusty_keymaster/TrustyKeyMintDevice.h
index 5fd628f3c..c8d8932c4 100644
--- a/trusty/keymaster/include/trusty_keymaster/TrustyKeyMintDevice.h
+++ b/trusty/keymaster/include/trusty_keymaster/TrustyKeyMintDevice.h
@@ -27,6 +27,7 @@ namespace aidl::android::hardware::security::keymint::trusty {
 using ::keymaster::TrustyKeymaster;
 using ::ndk::ScopedAStatus;
 using secureclock::TimeStampToken;
+using ::std::array;
 using ::std::optional;
 using ::std::shared_ptr;
 using ::std::vector;
@@ -77,8 +78,13 @@ class TrustyKeyMintDevice : public BnKeyMintDevice {
                                const optional<TimeStampToken>& timestampToken) override;
     ScopedAStatus earlyBootEnded() override;
 
-    ScopedAStatus convertStorageKeyToEphemeral(const std::vector<uint8_t>& storageKeyBlob,
-                                               std::vector<uint8_t>* ephemeralKeyBlob) override;
+    ScopedAStatus convertStorageKeyToEphemeral(const vector<uint8_t>& storageKeyBlob,
+                                               vector<uint8_t>* ephemeralKeyBlob) override;
+
+    ScopedAStatus getRootOfTrustChallenge(array<uint8_t, 16>* challenge) override;
+    ScopedAStatus getRootOfTrust(const array<uint8_t, 16>& challenge,
+                                 vector<uint8_t>* rootOfTrust) override;
+    ScopedAStatus sendRootOfTrust(const vector<uint8_t>& rootOfTrust) override;
 
   protected:
     std::shared_ptr<TrustyKeymaster> impl_;
diff --git a/trusty/keymaster/keymint/TrustyKeyMintDevice.cpp b/trusty/keymaster/keymint/TrustyKeyMintDevice.cpp
index 68a791259..44780e835 100644
--- a/trusty/keymaster/keymint/TrustyKeyMintDevice.cpp
+++ b/trusty/keymaster/keymint/TrustyKeyMintDevice.cpp
@@ -306,7 +306,7 @@ ScopedAStatus TrustyKeyMintDevice::earlyBootEnded() {
 }
 
 ScopedAStatus TrustyKeyMintDevice::convertStorageKeyToEphemeral(
-        const std::vector<uint8_t>& storageKeyBlob, std::vector<uint8_t>* ephemeralKeyBlob) {
+        const vector<uint8_t>& storageKeyBlob, vector<uint8_t>* ephemeralKeyBlob) {
     keymaster::ExportKeyRequest request(impl_->message_version());
     request.SetKeyMaterial(storageKeyBlob.data(), storageKeyBlob.size());
     request.key_format = KM_KEY_FORMAT_RAW;
@@ -321,4 +321,17 @@ ScopedAStatus TrustyKeyMintDevice::convertStorageKeyToEphemeral(
     return ScopedAStatus::ok();
 }
 
+ScopedAStatus TrustyKeyMintDevice::getRootOfTrustChallenge(array<uint8_t, 16>* /* challenge */) {
+    return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
+}
+
+ScopedAStatus TrustyKeyMintDevice::getRootOfTrust(const array<uint8_t, 16>& /* challenge */,
+                                                  vector<uint8_t>* /* rootOfTrust */) {
+    return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
+}
+
+ScopedAStatus TrustyKeyMintDevice::sendRootOfTrust(const vector<uint8_t>& /* rootOfTrust */) {
+    return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
+}
+
 }  // namespace aidl::android::hardware::security::keymint::trusty