Add fsverity_digests proto and metadata for APK
fsverity_digests will be used as a mapping file from files to their
fsverity digest, under system/etc/security/fsverity/BuildManifest.apk
Bug: 193113311
Test: build with PRODUCT_SYSTEM_FSVERITY_GENERATE_METADATA := true
Change-Id: I35da5e3bdbfc82e7baf5dc1c3f8ddf5fed951373
diff --git a/fsverity/fsverity_digests.proto b/fsverity/fsverity_digests.proto
new file mode 100644
index 0000000..816ae61
--- /dev/null
+++ b/fsverity/fsverity_digests.proto
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+syntax = "proto3";
+
+package android.security.fsverity;
+
+message FSVerityDigests {
+ message Digest {
+ bytes digest = 1;
+ string hash_alg = 2;
+ }
+ map<string, Digest> digests = 1;
+}