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58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
/*
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* Hans - IP over ICMP
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* Copyright (C) 2009 Friedrich Schöller <hans@schoeller.se>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* 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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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU 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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*/
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#include "auth.h"
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#include "sha1.h"
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#include "utility.h"
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#include <arpa/inet.h>
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Auth::Auth(const char *passphrase)
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{
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this->passphrase = passphrase;
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}
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Auth::Response Auth::getResponse(const Challenge &challenge) const
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{
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SHA1 hasher;
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Response response;
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hasher << passphrase.c_str();
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hasher.Input(&challenge[0], challenge.size());
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hasher.Result((unsigned int *)response.data);
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for (int i = 0; i < 5; i++)
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response.data[i] = htonl(response.data[i]);
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return response;
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}
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Auth::Challenge Auth::generateChallenge(int length) const
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{
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Challenge challenge;
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challenge.resize(length);
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for (int i = 0; i < length; i++)
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challenge[i] = Utility::rand();
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return challenge;
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}
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