blob: 5b197a405ebbd60294047defd89bec44db54e588 [file] [log] [blame]
// Copyright 2018 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <limits>
#include <map>
#include <memory>
#include <string>
#include <utility>
#include <base/threading/platform_thread.h>
#include <trunks/trunks_factory.h>
#include <trunks/trunks_factory_impl.h>
#include "libtpmcrypto/tpm.h"
namespace brillo {
class SecureBlob;
} // namespace brillo
namespace tpmcrypto {
class Tpm2Impl : public Tpm {
Tpm2Impl(const Tpm2Impl&) = delete;
Tpm2Impl& operator=(const Tpm2Impl&) = delete;
~Tpm2Impl() override;
bool SealToPCR0(const brillo::SecureBlob& value,
brillo::SecureBlob* sealed_value) override;
bool Unseal(const brillo::SecureBlob& sealed_value,
brillo::SecureBlob* value) override;
bool GetNVAttributes(uint32_t index, uint32_t* attributes) override;
bool NVReadNoAuth(uint32_t index,
uint32_t offset,
size_t size,
std::string* data) override;
// If already initialized this returns true, otherwise attempts to
// initialize and returns whether initialization was successful.
bool EnsureInitialized() WARN_UNUSED_RESULT;
bool CreatePcr0PolicyDigest(std::string* policy_digest);
bool CreateHmacSession(std::unique_ptr<trunks::HmacSession>* hmac_session);
bool CreatePolicySessionForPCR0(
std::unique_ptr<trunks::PolicySession>* policy_session);
bool SealData(trunks::AuthorizationDelegate* session_delegate,
const std::string& policy_digest,
const brillo::SecureBlob& value,
brillo::SecureBlob* sealed_value);
bool UnsealData(trunks::AuthorizationDelegate* policy_delegate,
const brillo::SecureBlob& sealed_value,
brillo::SecureBlob* value);
bool is_initialized_ = false;
std::unique_ptr<trunks::TrunksFactoryImpl> factory_impl_;
std::unique_ptr<trunks::TpmUtility> tpm_utility_;
} // namespace tpmcrypto