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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_UNEXPORTABLE_KEYS_UNEXPORTABLE_KEY_TASKS_H_
#define COMPONENTS_UNEXPORTABLE_KEYS_UNEXPORTABLE_KEY_TASKS_H_
#include <cstdint>
#include <memory>
#include <optional>
#include "base/containers/span.h"
#include "base/functional/callback_forward.h"
#include "base/memory/scoped_refptr.h"
#include "components/unexportable_keys/background_task_impl.h"
#include "components/unexportable_keys/background_task_priority.h"
#include "components/unexportable_keys/service_error.h"
#include "crypto/signature_verifier.h"
namespace crypto {
class UnexportableSigningKey;
class UnexportableKeyProvider;
} // namespace crypto
namespace unexportable_keys {
class RefCountedUnexportableSigningKey;
// A `BackgroundTask` to generate a new `crypto::UnexportableSigningKey`.
class GenerateKeyTask
: public internal::BackgroundTaskImpl<
ServiceErrorOr<scoped_refptr<RefCountedUnexportableSigningKey>>> {
public:
GenerateKeyTask(
std::unique_ptr<crypto::UnexportableKeyProvider> key_provider,
base::span<const crypto::SignatureVerifier::SignatureAlgorithm>
acceptable_algorithms,
BackgroundTaskPriority priority,
base::OnceCallback<void(GenerateKeyTask::ReturnType, size_t)> callback);
};
// A `BackgroundTask` to create a `crypto::UnexportableSigningKey` from a
// wrapped key.
class FromWrappedKeyTask
: public internal::BackgroundTaskImpl<
ServiceErrorOr<scoped_refptr<RefCountedUnexportableSigningKey>>> {
public:
FromWrappedKeyTask(
std::unique_ptr<crypto::UnexportableKeyProvider> key_provider,
base::span<const uint8_t> wrapped_key,
BackgroundTaskPriority priority,
base::OnceCallback<void(FromWrappedKeyTask::ReturnType, size_t)>
callback);
};
// A `BackgroundTask` to sign data with `crypto::UnexportableSigningKey`.
class SignTask : public internal::BackgroundTaskImpl<
ServiceErrorOr<std::vector<uint8_t>>> {
public:
SignTask(scoped_refptr<RefCountedUnexportableSigningKey> signing_key,
base::span<const uint8_t> data,
BackgroundTaskPriority priority,
size_t max_retries,
base::OnceCallback<void(SignTask::ReturnType, size_t)> callback);
protected:
bool ShouldRetryBasedOnResult(
const ServiceErrorOr<std::vector<uint8_t>>& result) const override;
};
} // namespace unexportable_keys
#endif // COMPONENTS_UNEXPORTABLE_KEYS_UNEXPORTABLE_KEY_TASKS_H_
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