Keystore 2.0: Shim around the basic functionality of Keystore 2.0

This patch adds a shim around the Keystore 2.0 AIDL spec. The new shim
is modularized like the AIDL spec into the base Keystore module
Keystore2, the security level specific interface KeystoreSecurityLevel,
and the operation specific interface KeystoreOperation.

Other system maintenance specific interfaces have yet to be added.

Bug: 159476414
Bug: 171305684
Test: None
Change-Id: I070f73739e4b37ce10568939ac666e40b14a52a8

1 files changed, 33 insertions, 0 deletions

diff --git a/keystore/java/android/security/CheckedRemoteRequest.java b/keystore/java/android/security/CheckedRemoteRequest.java
new file mode 100644
index 000000000000..b6e7c1fa61b9
--- /dev/null
+++ b/keystore/java/android/security/CheckedRemoteRequest.java
@@ -0,0 +1,33 @@
+/*
+ * 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.os.RemoteException;
+
+/**
+ * This is a Producer of {@code R} that is expected to throw a {@link RemoteException}.
+ *
+ * It is used by Keystore2 service wrappers to handle and convert {@link RemoteException}
+ * and {@link android.os.ServiceSpecificException} into {@link KeyStoreException}.
+ *
+ * @hide
+ * @param <R>
+ */
+@FunctionalInterface
+interface CheckedRemoteRequest<R> {
+    R execute() throws RemoteException;
+}