mirror of
https://github.com/zeromq/libzmq.git
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130 lines
3.8 KiB
C++
130 lines
3.8 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_CURVE_CLIENT_HPP_INCLUDED__
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#define __ZMQ_CURVE_CLIENT_HPP_INCLUDED__
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#include "platform.hpp"
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#include "mutex.hpp"
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#ifdef HAVE_LIBSODIUM
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#ifdef HAVE_TWEETNACL
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#include "tweetnacl_base.h"
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#include "randombytes.h"
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#else
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#include "sodium.h"
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#endif
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#if crypto_box_NONCEBYTES != 24 \
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|| crypto_box_PUBLICKEYBYTES != 32 \
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|| crypto_box_SECRETKEYBYTES != 32 \
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|| crypto_box_ZEROBYTES != 32 \
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|| crypto_box_BOXZEROBYTES != 16
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#error "libsodium not built properly"
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#endif
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#include "mechanism.hpp"
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#include "options.hpp"
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namespace zmq
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{
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class msg_t;
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class session_base_t;
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class curve_client_t : public mechanism_t
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{
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public:
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curve_client_t (const options_t &options_);
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virtual ~curve_client_t ();
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// mechanism implementation
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virtual int next_handshake_command (msg_t *msg_);
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virtual int process_handshake_command (msg_t *msg_);
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virtual int encode (msg_t *msg_);
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virtual int decode (msg_t *msg_);
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virtual status_t status () const;
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private:
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enum state_t {
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send_hello,
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expect_welcome,
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send_initiate,
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expect_ready,
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error_received,
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connected
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};
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// Current FSM state
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state_t state;
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// Our public key (C)
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uint8_t public_key [crypto_box_PUBLICKEYBYTES];
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// Our secret key (c)
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uint8_t secret_key [crypto_box_SECRETKEYBYTES];
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// Our short-term public key (C')
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uint8_t cn_public [crypto_box_PUBLICKEYBYTES];
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// Our short-term secret key (c')
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uint8_t cn_secret [crypto_box_SECRETKEYBYTES];
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// Server's public key (S)
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uint8_t server_key [crypto_box_PUBLICKEYBYTES];
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// Server's short-term public key (S')
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uint8_t cn_server [crypto_box_PUBLICKEYBYTES];
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// Cookie received from server
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uint8_t cn_cookie [16 + 80];
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// Intermediary buffer used to speed up boxing and unboxing.
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uint8_t cn_precom [crypto_box_BEFORENMBYTES];
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// Nonce
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uint64_t cn_nonce;
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uint64_t cn_peer_nonce;
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int produce_hello (msg_t *msg_);
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int process_welcome (const uint8_t *cmd_data, size_t data_size);
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int produce_initiate (msg_t *msg_);
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int process_ready (const uint8_t *cmd_data, size_t data_size);
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int process_error (const uint8_t *cmd_data, size_t data_size);
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mutex_t sync;
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};
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}
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#endif
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#endif
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