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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "crypto/unexportable_key.h"
#include "base/check.h"
#include "base/functional/bind.h"
namespace crypto {
namespace {
std::unique_ptr<UnexportableKeyProvider> (*g_mock_provider)() = nullptr;
} // namespace
UnexportableSigningKey::~UnexportableSigningKey() = default;
UnexportableKeyProvider::~UnexportableKeyProvider() = default;
VirtualUnexportableSigningKey::~VirtualUnexportableSigningKey() = default;
VirtualUnexportableKeyProvider::~VirtualUnexportableKeyProvider() = default;
bool UnexportableSigningKey::IsHardwareBacked() const {
return false;
}
#if BUILDFLAG(IS_WIN)
std::unique_ptr<UnexportableKeyProvider> GetUnexportableKeyProviderWin();
std::unique_ptr<UnexportableKeyProvider>
GetMicrosoftSoftwareUnexportableKeyProviderWin();
std::unique_ptr<VirtualUnexportableKeyProvider>
GetVirtualUnexportableKeyProviderWin();
#elif BUILDFLAG(IS_MAC)
std::unique_ptr<UnexportableKeyProvider> GetUnexportableKeyProviderMac(
UnexportableKeyProvider::Config config);
#endif
// Implemented in unexportable_key_software_unsecure.cc.
std::unique_ptr<UnexportableKeyProvider>
GetUnexportableKeyProviderSoftwareUnsecure();
std::unique_ptr<UnexportableKeyProvider> GetUnexportableKeyProvider(
UnexportableKeyProvider::Config config) {
if (g_mock_provider) {
return g_mock_provider();
}
#if BUILDFLAG(IS_WIN)
return GetUnexportableKeyProviderWin();
#elif BUILDFLAG(IS_MAC)
return GetUnexportableKeyProviderMac(std::move(config));
#else
return nullptr;
#endif
}
std::unique_ptr<UnexportableKeyProvider>
GetMicrosoftSoftwareUnexportableKeyProvider() {
if (g_mock_provider) {
return g_mock_provider();
}
#if BUILDFLAG(IS_WIN)
return GetMicrosoftSoftwareUnexportableKeyProviderWin();
#else
return nullptr;
#endif
}
std::unique_ptr<VirtualUnexportableKeyProvider>
GetVirtualUnexportableKeyProvider_DO_NOT_USE_METRICS_ONLY() {
#if BUILDFLAG(IS_WIN)
return GetVirtualUnexportableKeyProviderWin();
#else
return nullptr;
#endif
}
namespace internal {
bool HasScopedUnexportableKeyProvider() {
return g_mock_provider != nullptr;
}
void SetUnexportableKeyProviderForTesting(
std::unique_ptr<UnexportableKeyProvider> (*func)()) {
if (g_mock_provider) {
// Nesting ScopedMockUnexportableSigningKeyForTesting is not supported.
CHECK(!func);
g_mock_provider = nullptr;
} else {
g_mock_provider = func;
}
}
} // namespace internal
} // namespace crypto
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