1 files changed, 3 insertions, 0 deletions

diff --git a/crypto/ext4crypt/Keymaster4.h b/crypto/ext4crypt/Keymaster4.h
index 37bff4e3a..14c230bfd 100644
--- a/crypto/ext4crypt/Keymaster4.h
+++ b/crypto/ext4crypt/Keymaster4.h
@@ -102,6 +102,9 @@ class Keymaster {
     explicit operator bool() { return mDevice.get() != nullptr; }
     // Generate a key in the keymaster from the given params.
     bool generateKey(const km::AuthorizationSet& inParams, std::string* key);
+    // Export a key from keymaster.
+    bool exportKey(km::KeyFormat format, KeyBuffer& kmKey, const std::string& clientId,
+                   const std::string& appData, std::string* key);
     // If the keymaster supports it, permanently delete a key.
     bool deleteKey(const std::string& key);
     // Replace stored key blob in response to KM_ERROR_KEY_REQUIRES_UPGRADE.