diff --git a/keystore/KeyAttestationApplicationId.cpp b/keystore/KeyAttestationApplicationId.cpp
new file mode 100644
index 0000000..1352124
--- /dev/null
+++ b/keystore/KeyAttestationApplicationId.cpp
@@ -0,0 +1,40 @@
+/*
+**
+** Copyright 2016, 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.
+*/
+
+#include "include/keystore/KeyAttestationApplicationId.h"
+
+#include <binder/Parcel.h>
+
+namespace android {
+namespace security {
+namespace keymaster {
+
+status_t KeyAttestationApplicationId::writeToParcel(Parcel* parcel) const {
+    return parcel->writeParcelableVector(packageInfos_);
+}
+
+status_t KeyAttestationApplicationId::readFromParcel(const Parcel* parcel) {
+    std::unique_ptr<std::vector<std::unique_ptr<KeyAttestationPackageInfo>>> temp_vector;
+    auto rc = parcel->readParcelableVector(&temp_vector);
+    if (rc != NO_ERROR) return rc;
+    packageInfos_.reset(temp_vector.release());
+    return NO_ERROR;
+}
+
+}  // namespace keymaster
+}  // namespace security
+}  // namespace android