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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_SYNC_ENGINE_NIGORI_CROSS_USER_SHARING_PUBLIC_KEY_H_
#define COMPONENTS_SYNC_ENGINE_NIGORI_CROSS_USER_SHARING_PUBLIC_KEY_H_
#include <array>
#include <optional>
#include "base/containers/span.h"
#include "third_party/boringssl/src/include/openssl/curve25519.h"
namespace syncer {
// A wrapper around a 32-byte X25519 public key.
class CrossUserSharingPublicKey {
public:
CrossUserSharingPublicKey(const CrossUserSharingPublicKey& other) = delete;
CrossUserSharingPublicKey(CrossUserSharingPublicKey&& other);
CrossUserSharingPublicKey& operator=(CrossUserSharingPublicKey&& other);
CrossUserSharingPublicKey& operator=(const CrossUserSharingPublicKey& other) =
delete;
~CrossUserSharingPublicKey();
// Initialize the key using `public_key`.
static std::optional<CrossUserSharingPublicKey> CreateByImport(
base::span<const uint8_t> public_key);
// Returns the raw public key.
std::array<uint8_t, X25519_PUBLIC_VALUE_LEN> GetRawPublicKey() const;
// Creates an exact clone.
CrossUserSharingPublicKey Clone() const;
private:
explicit CrossUserSharingPublicKey(
base::span<const uint8_t, X25519_PUBLIC_VALUE_LEN> public_key);
std::array<uint8_t, X25519_PUBLIC_VALUE_LEN> public_key_;
};
} // namespace syncer
#endif // COMPONENTS_SYNC_ENGINE_NIGORI_CROSS_USER_SHARING_PUBLIC_KEY_H_
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