1 files changed, 78 insertions, 0 deletions
diff --git a/keystore/java/android/security/Authorization.java b/keystore/java/android/security/Authorization.java
new file mode 100644
index 000000000000..1fde2b5412ed
--- /dev/null
+++ b/keystore/java/android/security/Authorization.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.annotation.NonNull;
+import android.hardware.security.keymint.HardwareAuthToken;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.ServiceSpecificException;
+import android.security.authorization.IKeystoreAuthorization;
+import android.system.keystore2.ResponseCode;
+import android.util.Log;
+
+/**
+ * @hide This is the client side for IKeystoreAuthorization AIDL.
+ * It shall only be used by biometric authentication providers and Gatekeeper.
+ */
+public class Authorization {
+    private static final String TAG = "KeystoreAuthorization";
+    private static IKeystoreAuthorization sIKeystoreAuthorization;
+
+    public static final int SYSTEM_ERROR = ResponseCode.SYSTEM_ERROR;
+
+    public Authorization() {
+        sIKeystoreAuthorization = null;
+    }
+
+    private static synchronized IKeystoreAuthorization getService() {
+        if (sIKeystoreAuthorization == null) {
+            sIKeystoreAuthorization = IKeystoreAuthorization.Stub.asInterface(
+                    ServiceManager.checkService("android.security.authorization"));
+        }
+        return sIKeystoreAuthorization;
+    }
+
+    /**
+     * Adds an auth token to keystore2.
+     *
+     * @param authToken created by Android authenticators.
+     * @return 0 if successful or {@code ResponseCode.SYSTEM_ERROR}.
+     */
+    public int addAuthToken(@NonNull HardwareAuthToken authToken) {
+        if (!android.security.keystore2.AndroidKeyStoreProvider.isInstalled()) return 0;
+        try {
+            getService().addAuthToken(authToken);
+            return 0;
+        } catch (RemoteException e) {
+            Log.w(TAG, "Can not connect to keystore", e);
+            return SYSTEM_ERROR;
+        } catch (ServiceSpecificException e) {
+            return e.errorCode;
+        }
+    }
+
+    /**
+     * Add an auth token to Keystore 2.0 in the legacy serialized auth token format.
+     * @param authToken
+     * @return 0 if successful or a {@code ResponseCode}.
+     */
+    public int addAuthToken(@NonNull byte[] authToken) {
+        return addAuthToken(AuthTokenUtils.toHardwareAuthToken(authToken));
+    }
+
+}