ECDHE.cpp

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/*
 This file is part of cpp-ethereum.
 
 cpp-ethereum is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 
 cpp-ethereum is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "ECDHE.h"

using namespace dev;
using namespace dev::crypto;

void ECDHE::agree(Public const& _remote, Secret& o_sharedSecret) const
{
        if (m_remoteEphemeral)
                // agreement can only occur once
                BOOST_THROW_EXCEPTION(InvalidState());
        
        m_remoteEphemeral = _remote;
        ecdh::agree(m_ephemeral.secret(), m_remoteEphemeral, o_sharedSecret);
}