69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
//
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// Copyright (C) 2015 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#include "trunks/hmac_session_impl.h"
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#include <string>
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#include <base/logging.h>
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#include <base/macros.h>
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#include <base/stl_util.h>
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#include <openssl/rand.h>
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namespace trunks {
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HmacSessionImpl::HmacSessionImpl(const TrunksFactory& factory)
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: factory_(factory) {
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session_manager_ = factory_.GetSessionManager();
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}
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HmacSessionImpl::~HmacSessionImpl() {
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session_manager_->CloseSession();
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}
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AuthorizationDelegate* HmacSessionImpl::GetDelegate() {
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if (session_manager_->GetSessionHandle() == kUninitializedHandle) {
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return nullptr;
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}
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return &hmac_delegate_;
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}
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TPM_RC HmacSessionImpl::StartBoundSession(
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TPMI_DH_ENTITY bind_entity,
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const std::string& bind_authorization_value,
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bool enable_encryption) {
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return session_manager_->StartSession(TPM_SE_HMAC, bind_entity,
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bind_authorization_value,
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enable_encryption, &hmac_delegate_);
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}
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TPM_RC HmacSessionImpl::StartUnboundSession(bool enable_encryption) {
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// Starting an unbound session is the same as starting a session bound to
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// TPM_RH_NULL. In this case, the authorization is the zero length buffer.
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// We can therefore simply call StartBoundSession with TPM_RH_NULL as the
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// binding entity, and the empty string as the authorization.
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return StartBoundSession(TPM_RH_NULL, "", enable_encryption);
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}
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void HmacSessionImpl::SetEntityAuthorizationValue(const std::string& value) {
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hmac_delegate_.set_entity_authorization_value(value);
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}
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void HmacSessionImpl::SetFutureAuthorizationValue(const std::string& value) {
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hmac_delegate_.set_future_authorization_value(value);
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}
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} // namespace trunks
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