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110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
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/*
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* Elliptic curves over GF(p): generic functions
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*
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* Copyright (C) 2006-2014, 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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/*
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* References:
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*
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* SEC1 http://www.secg.org/index.php?action=secg,docs_secg
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* GECC = Guide to Elliptic Curve Cryptography - Hankerson, Menezes, Vanstone
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* FIPS 186-3 http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf
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* RFC 4492 for the related TLS structures and constants
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*
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* [M255] http://cr.yp.to/ecdh/curve25519-20060209.pdf
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*
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* [2] CORON, Jean-Sébastien. Resistance against differential power analysis
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* for elliptic curve cryptosystems. In : Cryptographic Hardware and
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* Embedded Systems. Springer Berlin Heidelberg, 1999. p. 292-302.
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* <http://link.springer.com/chapter/10.1007/3-540-48059-5_25>
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*
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* [3] HEDABOU, Mustapha, PINEL, Pierre, et BÉNÉTEAU, Lucien. A comb method to
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* render ECC resistant against Side Channel Attacks. IACR Cryptology
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* ePrint Archive, 2004, vol. 2004, p. 342.
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* <http://eprint.iacr.org/2004/342.pdf>
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*/
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#if !defined(POLARSSL_CONFIG_FILE)
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#include "polarssl/config.h"
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#else
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#include POLARSSL_CONFIG_FILE
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#endif
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#if defined(POLARSSL_ECP_C)
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#include "polarssl/ecp.h"
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#if defined(POLARSSL_PLATFORM_C)
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#include "polarssl/platform.h"
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#else
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#define polarssl_printf printf
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#define polarssl_malloc malloc
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#define polarssl_free free
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#endif
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#include <stdlib.h>
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#if defined(_MSC_VER) && !defined strcasecmp && !defined(EFIX64) && \
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!defined(EFI32)
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#define strcasecmp _stricmp
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#endif
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#if defined(_MSC_VER) && !defined(inline)
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#define inline _inline
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#else
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#if defined(__ARMCC_VERSION) && !defined(inline)
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#define inline __inline
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#endif /* __ARMCC_VERSION */
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#endif /*_MSC_VER */
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#define ECP_NB_CURVES 32
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static ecp_group_id ecp_supported_grp_id[ECP_NB_CURVES];
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/*
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* List of supported curves, group ID only
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*/
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const ecp_group_id *ecp_grp_id_list( void )
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{
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static int init_done = 0;
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if( ! init_done )
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{
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size_t i = 0;
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const ecp_curve_info *curve_info;
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for( curve_info = ecp_curve_list();
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curve_info->grp_id != POLARSSL_ECP_DP_NONE;
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curve_info++ )
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{
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ecp_supported_grp_id[i++] = curve_info->grp_id;
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}
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ecp_supported_grp_id[i] = POLARSSL_ECP_DP_NONE;
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init_done = 1;
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}
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return( ecp_supported_grp_id );
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}
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#endif /* POLARSSL_ECP_C */
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