diff --git a/keystore2/src/km_compat/km_compat.cpp b/keystore2/src/km_compat/km_compat.cpp
index 4141b1c..bdc3f2a 100644
--- a/keystore2/src/km_compat/km_compat.cpp
+++ b/keystore2/src/km_compat/km_compat.cpp
@@ -687,6 +687,14 @@
     return convertErrorCode(km_error);
 }
 
+ScopedAStatus
+KeyMintDevice::getKeyCharacteristics(const std::vector<uint8_t>& /* storageKeyBlob */,
+                                     const std::vector<uint8_t>& /* appId */,
+                                     const std::vector<uint8_t>& /* appData */,
+                                     std::vector<KeyCharacteristics>* /* keyCharacteristics */) {
+    return convertErrorCode(KMV1::ErrorCode::UNIMPLEMENTED);
+}
+
 ScopedAStatus KeyMintOperation::updateAad(const std::vector<uint8_t>& input,
                                           const std::optional<HardwareAuthToken>& optAuthToken,
                                           const std::optional<TimeStampToken>& optTimeStampToken) {
diff --git a/keystore2/src/km_compat/km_compat.h b/keystore2/src/km_compat/km_compat.h
index cd2b804..09c9157 100644
--- a/keystore2/src/km_compat/km_compat.h
+++ b/keystore2/src/km_compat/km_compat.h
@@ -118,6 +118,11 @@
     ScopedAStatus convertStorageKeyToEphemeral(const std::vector<uint8_t>& storageKeyBlob,
                                                std::vector<uint8_t>* ephemeralKeyBlob) override;
 
+    ScopedAStatus
+    getKeyCharacteristics(const std::vector<uint8_t>& storageKeyBlob,
+                          const std::vector<uint8_t>& appId, const std::vector<uint8_t>& appData,
+                          std::vector<KeyCharacteristics>* keyCharacteristics) override;
+
     // These are public to allow testing code to use them directly.
     // This class should not be used publicly anyway.
     std::variant<std::vector<Certificate>, KMV1_ErrorCode>