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// libTorrent - BitTorrent library
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// Copyright (C) 2005-2006, Jari Sundell
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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 2 of the License, or
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// (at your option) any later version.
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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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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// In addition, as a special exception, the copyright holders give
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// permission to link the code of portions of this program with the
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// OpenSSL library under certain conditions as described in each
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// individual source file, and distribute linked combinations
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// You must obey the GNU General Public License in all respects for
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// all of the code used other than OpenSSL. If you modify file(s)
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// with this exception, you may extend this exception to your version
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// of the file(s), but you are not obligated to do so. If you do not
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// wish to do so, delete this exception statement from your version.
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// If you delete this exception statement from all source files in the
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// program, then also delete it here.
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// Contact: Jari Sundell <jaris@ifi.uio.no>
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// 3185 Skoppum, NORWAY
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#ifndef LIBTORRENT_PROTOCOL_HANDSHAKE_ENCRYPTION_H
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#define LIBTORRENT_PROTOCOL_HANDSHAKE_ENCRYPTION_H
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#include "encryption_info.h"
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class HandshakeEncryption {
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static const int crypto_plain = 1;
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static const int crypto_rc4 = 2;
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static const unsigned char dh_prime[];
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static const unsigned int dh_prime_length = 96;
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static const unsigned char dh_generator[];
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static const unsigned int dh_generator_length = 1;
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static const unsigned char vc_data[];
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static const unsigned int vc_length = 8;
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HandshakeEncryption(int options) :
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bool has_crypto_plain() const { return m_crypto & crypto_plain; }
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bool has_crypto_rc4() const { return m_crypto & crypto_rc4; }
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DiffieHellman* key() { return m_key; }
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EncryptionInfo* info() { return &m_info; }
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int options() const { return m_options; }
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int crypto() const { return m_crypto; }
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void set_crypto(int val) { m_crypto = val; }
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Retry retry() const { return m_retry; }
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void set_retry(Retry val) { m_retry = val; }
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bool should_retry() const;
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const char* sync() const { return m_sync; }
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unsigned int sync_length() const { return m_syncLength; }
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void set_sync(const char* src, unsigned int len) { std::memcpy(m_sync, src, (m_syncLength = len)); }
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char* modify_sync(unsigned int len) { m_syncLength = len; return m_sync; }
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unsigned int length_ia() const { return m_lengthIA; }
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void set_length_ia(unsigned int len) { m_lengthIA = len; }
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void initialize_decrypt(const char* origHash, bool incoming);
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void initialize_encrypt(const char* origHash, bool incoming);
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void deobfuscate_hash(char* src) const;
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void hash_req1_to_sync();
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void encrypt_vc_to_sync(const char* origHash);
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static void copy_vc(void* dest) { std::memset(dest, 0, vc_length); }
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static bool compare_vc(const void* buf);
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DiffieHellman* m_key;
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// A pointer instead?
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EncryptionInfo m_info;
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unsigned int m_syncLength;
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unsigned int m_lengthIA;
added
removed
src/protocol/handshake_encryption.h
