blob: b6a12b634c4a3999c8764f47bcc79479be31c46f [file] [log] [blame]
// Copyright (c) 2013 The Chromium 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 <cstdint>
#include <string>
#include "absl/strings/string_view.h"
#include "quic/core/crypto/key_exchange.h"
#include "quic/platform/api/quic_export.h"
namespace quic {
class QuicRandom;
// Curve25519KeyExchange implements a SynchronousKeyExchange using
// elliptic-curve Diffie-Hellman on curve25519. See
class QUIC_EXPORT_PRIVATE Curve25519KeyExchange
: public SynchronousKeyExchange {
~Curve25519KeyExchange() override;
// New generates a private key and then creates new key-exchange object.
static std::unique_ptr<Curve25519KeyExchange> New(QuicRandom* rand);
// New creates a new key-exchange object from a private key. If |private_key|
// is invalid, nullptr is returned.
static std::unique_ptr<Curve25519KeyExchange> New(
absl::string_view private_key);
// NewPrivateKey returns a private key, generated from |rand|, suitable for
// passing to |New|.
static std::string NewPrivateKey(QuicRandom* rand);
// SynchronousKeyExchange interface.
bool CalculateSharedKeySync(absl::string_view peer_public_value,
std::string* shared_key) const override;
absl::string_view public_value() const override;
QuicTag type() const override { return kC255; }
uint8_t private_key_[32];
uint8_t public_key_[32];
} // namespace quic