mirror of
https://github.com/yuzu-emu/mbedtls
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77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/**
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* \file ecdh.h
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*
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* \brief Elliptic curve Diffie-Hellman
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*
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* Copyright (C) 2006-2013, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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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 2 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef POLARSSL_ECDH_H
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#define POLARSSL_ECDH_H
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#include "polarssl/ecp.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Generate a public key
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*
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* \param grp ECP group
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* \param d Destination MPI (secret exponent)
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* \param Q Destination point (public key)
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* \param f_rng RNG function
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* \param p_rng RNG parameter
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*
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* \return 0 if successful,
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* or a POLARSSL_ERR_ECP_XXX or POLARSSL_MPI_XXX error code
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*/
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int ecdh_gen_public( const ecp_group *grp, mpi *d, ecp_point *Q,
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int (*f_rng)(void *, unsigned char *, size_t),
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void *p_rng );
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/**
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* \brief Compute shared secret
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*
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* \param grp ECP group
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* \param z Destination MPI (shared secret)
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* \param Q Public key from other party
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* \param d Our secret exponent
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*
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* \return 0 if successful,
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* or a POLARSSL_ERR_ECP_XXX or POLARSSL_MPI_XXX error code
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*/
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int ecdh_compute_shared( const ecp_group *grp, mpi *z,
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const ecp_point *Q, const mpi *d );
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/**
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if the test failed
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*/
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int ecdh_self_test( int verbose );
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#ifdef __cplusplus
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}
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#endif
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#endif
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