You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
3.2 KiB
81 lines
3.2 KiB
// |
|
// Copyright (C) 2015 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. |
|
// |
|
|
|
#ifndef TRUNKS_HMAC_SESSION_IMPL_H_ |
|
#define TRUNKS_HMAC_SESSION_IMPL_H_ |
|
|
|
#include "trunks/hmac_session.h" |
|
|
|
#include <memory> |
|
#include <string> |
|
|
|
#include <base/macros.h> |
|
|
|
#include "trunks/hmac_authorization_delegate.h" |
|
#include "trunks/session_manager.h" |
|
#include "trunks/trunks_export.h" |
|
#include "trunks/trunks_factory.h" |
|
|
|
namespace trunks { |
|
|
|
// This class implements the HmacSession interface. It is used for |
|
// keeping track of the HmacAuthorizationDelegate used for commands, and to |
|
// provide authorization for commands that need it. It is instantiated by |
|
// TpmUtilityImpl. If we need to use this class outside of TpmUtility, we |
|
// can use it as below: |
|
// TrunksFactoryImpl factory; |
|
// HmacSessionImpl session(factory); |
|
// session.StartBoundSession(bind_entity, bind_authorization, true); |
|
// session.SetEntityAuthorizationValue(entity_authorization); |
|
// factory.GetTpm()->RSA_EncrpytSync(_,_,_,_, session.GetDelegate()); |
|
// NOTE: StartBoundSession/StartUnboundSession should not be called before |
|
// TPM Ownership is taken. This is because starting a session uses the |
|
// SaltingKey, which is only created after ownership is taken. |
|
class TRUNKS_EXPORT HmacSessionImpl : public HmacSession { |
|
public: |
|
// The constructor for HmacAuthroizationSession needs a factory. In |
|
// producation code, this factory is used to access the TPM class to forward |
|
// commands to the TPM. In test code, this is used to mock out the TPM calls. |
|
explicit HmacSessionImpl(const TrunksFactory& factory); |
|
~HmacSessionImpl() override; |
|
|
|
// HmacSession methods. |
|
AuthorizationDelegate* GetDelegate() override; |
|
TPM_RC StartBoundSession(TPMI_DH_ENTITY bind_entity, |
|
const std::string& bind_authorization_value, |
|
bool enable_encryption) override; |
|
TPM_RC StartUnboundSession(bool enable_encryption) override; |
|
void SetEntityAuthorizationValue(const std::string& value) override; |
|
void SetFutureAuthorizationValue(const std::string& value) override; |
|
|
|
private: |
|
// This factory is only set in the constructor and is used to instantiate |
|
// The TPM class to forward commands to the TPM chip. |
|
const TrunksFactory& factory_; |
|
// This delegate is what provides authorization to commands. It is what is |
|
// returned when the GetDelegate method is called. |
|
HmacAuthorizationDelegate hmac_delegate_; |
|
// This object is used to manage the TPM session associated with this |
|
// HmacSession. |
|
std::unique_ptr<SessionManager> session_manager_; |
|
|
|
friend class HmacSessionTest; |
|
DISALLOW_COPY_AND_ASSIGN(HmacSessionImpl); |
|
}; |
|
|
|
} // namespace trunks |
|
|
|
#endif // TRUNKS_HMAC_SESSION_IMPL_H_
|
|
|