233 lines
6.2 KiB
C
233 lines
6.2 KiB
C
/**
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* @file ecc_curve_config.c
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* @version $Format:%h%d$
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*
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* Functions for ECC curve configuration, e.g. default curve
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* specification. Implementations may be different for FIPS and
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* non-FIPS modes or for different crypto libraries.
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*/
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/*
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* Copyright (c) 2013-2018 INSIDE Secure Corporation
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* Copyright (c) PeerSec Networks, 2002-2011
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* All Rights Reserved
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*
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* The latest version of this code is available at http://www.matrixssl.org
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*
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* This software is open source; 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 General Public License does NOT permit incorporating this software
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* into proprietary programs. If you are unable to comply with the GPL, a
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* commercial license for this software may be purchased from INSIDE at
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* http://www.insidesecure.com/
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*
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* This program is distributed in WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the 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, 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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* http://www.gnu.org/copyleft/gpl.html
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*/
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/******************************************************************************/
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#include "../cryptoImpl.h"
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#ifdef USE_MATRIX_ECC
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int32_t getEccParamById(psCurve16_t curveId, const psEccCurve_t **curve)
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{
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int i = 0;
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/* A curveId of zero is asking for a default curve */
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if (curveId == 0)
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{
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*curve = &eccCurves[0];
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return 0;
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}
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*curve = NULL;
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while (eccCurves[i].size > 0)
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{
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if (curveId == eccCurves[i].curveId)
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{
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*curve = &eccCurves[i];
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return 0;
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}
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i++;
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}
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return PS_FAIL;
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}
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/**
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User set list of curves they want to support.
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This method will put the largest bit strength first in the list.
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@param[in] curves Flags indicating which curves to use.
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*/
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void userSuppliedEccList(unsigned char *curveList, uint8_t *len, uint32_t curves)
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{
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const psEccCurve_t *curve;
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uint8_t listLen = 0;
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# ifdef USE_SECP521R1
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if (curves & IS_SECP521R1)
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{
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if (getEccParamById(IANA_SECP521R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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# ifdef USE_BRAIN512R1
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if (curves & IS_BRAIN512R1)
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{
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if (getEccParamById(IANA_BRAIN512R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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# ifdef USE_SECP384R1
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if (curves & IS_SECP384R1)
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{
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if (getEccParamById(IANA_SECP384R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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# ifdef USE_BRAIN384R1
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if (curves & IS_BRAIN384R1)
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{
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if (getEccParamById(IANA_BRAIN384R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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# ifdef USE_SECP256R1
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if (curves & IS_SECP256R1)
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{
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if (getEccParamById(IANA_SECP256R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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# ifdef USE_BRAIN256R1
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if (curves & IS_BRAIN256R1)
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{
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if (getEccParamById(IANA_BRAIN256R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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# ifdef USE_SECP224R1
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if (curves & IS_SECP224R1)
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{
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if (getEccParamById(IANA_SECP224R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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# ifdef USE_BRAIN224R1
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if (curves & IS_BRAIN224R1)
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{
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if (getEccParamById(IANA_BRAIN224R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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# ifdef USE_SECP192R1
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if (curves & IS_SECP192R1)
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{
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if (getEccParamById(IANA_SECP192R1, &curve) == 0)
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{
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if (listLen < (*len - 2))
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{
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curveList[listLen++] = (curve->curveId & 0xFF00) >> 8;
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curveList[listLen++] = curve->curveId & 0xFF;
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}
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}
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}
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# endif
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*len = listLen;
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}
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uint32_t compiledInEcFlags(void)
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{
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uint32_t ecFlags = 0;
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# ifdef USE_SECP192R1
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ecFlags |= IS_SECP192R1;
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# endif
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# ifdef USE_SECP224R1
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ecFlags |= IS_SECP224R1;
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# endif
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# ifdef USE_SECP256R1
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ecFlags |= IS_SECP256R1;
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# endif
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# ifdef USE_SECP384R1
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ecFlags |= IS_SECP384R1;
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# endif
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# ifdef USE_SECP521R1
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ecFlags |= IS_SECP521R1;
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# endif
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# ifdef USE_BRAIN224R1
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ecFlags |= IS_BRAIN224R1;
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# endif
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# ifdef USE_BRAIN256R1
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ecFlags |= IS_BRAIN256R1;
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# endif
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# ifdef USE_BRAIN384R1
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ecFlags |= IS_BRAIN384R1;
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# endif
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# ifdef USE_BRAIN512R1
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ecFlags |= IS_BRAIN512R1;
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# endif
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return ecFlags;
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}
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#endif /* USE_MATRIX_ECC */
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