+/*
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ * 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
+ */
+/*
+ * @file decider.cpp
+ * @author Bartłomiej Grzelewski (b.grzelewski@samsung.com)
+ * @version 1.0
+ */
+#include <dpl/log/log.h>
+
+#include <crypto-backend.h>
+
#include <platform/decider.h>
+#include <generic-backend/exception.h>
#include <sw-backend/store.h>
+#include <tz-backend/store.h>
namespace CKM {
namespace Crypto {
+namespace {
+CryptoBackend chooseCryptoBackend(DataType dataType, bool exportable, bool encrypted) {
+// Only software backend supports device encyption key
+ if (encrypted)
+ return CryptoBackend::OpenSSL;
+
+// The list of items that MUST be support by OpenSSL
+ if (dataType.isCertificate())
+ return CryptoBackend::OpenSSL;
+
+ if (dataType.isBinaryData())
+ return CryptoBackend::OpenSSL;
+
+ if (exportable)
+ return CryptoBackend::OpenSSL;
+
+// This is the place where we can use trust zone backend
+// Examples:
+//
+// if (dataType.isKeyPrivate())
+// return CryptoBackend::TrustZone;
+
+// This item does not met Trust Zone requirements. Let's use software backend
+ return CryptoBackend::OpenSSL;
+}
+} // namespace
+
Decider::Decider()
- : m_store(new SW::Store(CryptoBackend::OpenSSL))
+ : m_swStore(new SW::Store(CryptoBackend::OpenSSL))
+ , m_tzStore(new TZ::Store(CryptoBackend::TrustZone))
{}
-GStoreShPtr Decider::getStore(const Token &) {
- // This the place where we should choose backend bases on token information.
- return m_store;
+GStore& Decider::getStore(const Token &token) const {
+ return getStore(token.backendId);
};
+GStore& Decider::getStore(CryptoBackend cryptoBackend) const {
+ GStore *gStore = NULL;
+ if (cryptoBackend == CryptoBackend::OpenSSL)
+ gStore = m_swStore.get();
+ if (cryptoBackend == CryptoBackend::TrustZone)
+ gStore = m_tzStore.get();
+
+ if (gStore)
+ return *gStore;
+
+ ThrowErr(Exc::Crypto::InternalError,
+ "Backend not available. BackendId: ", (int)cryptoBackend);
+}
+
+GStore& Decider::getStore(DataType data, bool exportable, bool encrypted) const {
+ return getStore(chooseCryptoBackend(data, exportable, encrypted));
+}
+
} // namespace Crypto
} // namespace CKM