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Diffstat (limited to 'mpi.h')
| -rw-r--r-- | mpi.h | 83 |
1 files changed, 0 insertions, 83 deletions
@@ -1,83 +0,0 @@ -/* - * anytun - * - * The secure anycast tunneling protocol (satp) defines a protocol used - * for communication between any combination of unicast and anycast - * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel - * mode and allows tunneling of every ETHER TYPE protocol (e.g. - * ethernet, ip, arp ...). satp directly includes cryptography and - * message authentication based on the methodes used by SRTP. It is - * intended to deliver a generic, scaleable and secure solution for - * tunneling and relaying of packets of any protocol. - * - * - * Copyright (C) 2007 anytun.org <satp@wirdorange.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * This program 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 this program (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifndef _MPI_H_ -#define _MPI_H_ - -#include "datatypes.h" -#include "buffer.h" - -#include <gcrypt.h> - - -/** - * This class is a wrapper for the libgcrypt multi precision integer library [1] - * [1] http://www.gnupg.org/documentation/manuals/gcrypt/MPI-library.html - * - */ - -class Mpi -{ -public: - Mpi(); - virtual ~Mpi(); - Mpi(u_int8_t length); - Mpi(const Mpi &src); - Mpi(const u_int8_t * src, u_int32_t len); - - void operator=(const Mpi &src); - void operator=(u_int32_t src); - Mpi operator+(const Mpi &b) const; - Mpi operator+(const u_int32_t &b) const; - Mpi operator*(const u_int32_t n) const; - Mpi operator/(const Mpi &b) const; - - Mpi operator^(const Mpi &b) const; - - Mpi mul2exp(u_int32_t e) const; // value * 2^e - - /** - * returns a new[] u_int8_t* buffer with the MPI value in the - * GCRYMPI_FMT_STD (2-complement stored without a length header).<br> - * you have to delete it by hand with delete[]! - * @param buf_len size of the new buffer that is returned - * @return a byte buffer of size buf_len - */ - u_int8_t *getNewBuf(size_t* written) const; - std::string getHexDump() const; - u_int32_t getLength() const; - -protected: - gcry_mpi_t val_; -}; - - - -#endif |