blob: a8730b6b4b1c8e67ced9146f605de52be585b284 [file] [log] [blame]
/*
* Copyright 2014 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 "google_keymaster_messages.h"
namespace keymaster {
GenerateKeyResponse::~GenerateKeyResponse() { delete[] key_blob.key_material; }
size_t GenerateKeyResponse::SerializedSize() const {
if (error == KM_ERROR_OK) {
return sizeof(int32_t) /* error */ + sizeof(uint32_t) /* key size */ +
key_blob.key_material_size + sizeof(uint32_t) /* enforced size */ +
enforced.SerializedSize() + sizeof(uint32_t) /* unenforced size */ +
unenforced.SerializedSize();
} else {
return sizeof(error);
}
}
uint8_t* GenerateKeyResponse::Serialize(uint8_t* buf) const {
buf = append_to_buf(buf, static_cast<int32_t>(error));
if (error == KM_ERROR_OK) {
buf = append_size_and_data_to_buf(buf, key_blob.key_material, key_blob.key_material_size);
buf = append_to_buf(buf, static_cast<uint32_t>(enforced.SerializedSize()));
buf = enforced.Serialize(buf);
buf = append_to_buf(buf, static_cast<uint32_t>(unenforced.SerializedSize()));
buf = unenforced.Serialize(buf);
};
return buf;
}
bool GenerateKeyResponse::DeserializeToCopy(const uint8_t** buf, const uint8_t* end) {
delete[] key_blob.key_material;
if (!copy_from_buf(buf, end, &error))
return false;
if (end == *buf)
// Nothing but an error
return true;
uint32_t key_material_size;
if (!copy_from_buf(buf, end, &key_material_size) || end - *buf < key_material_size)
return false;
key_blob.key_material = new uint8_t[key_material_size];
key_blob.key_material_size = key_material_size;
if (key_blob.key_material == NULL ||
!copy_from_buf(buf, end, key_blob.key_material, key_blob.key_material_size))
return false;
uint32_t enforced_size;
if (!copy_from_buf(buf, end, &enforced_size) || end - *buf < enforced_size ||
!enforced.DeserializeToCopy(buf, *buf + enforced_size))
return false;
uint32_t unenforced_size;
if (!copy_from_buf(buf, end, &unenforced_size) || end - *buf < unenforced_size ||
!unenforced.DeserializeToCopy(buf, *buf + unenforced_size))
return false;
return true;
}
} // namespace keymaster