| /* |
| * Copyright (c) 2007, 2017, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with this library; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* ********************************************************************* |
| * |
| * The Original Code is the elliptic curve math library. |
| * |
| * The Initial Developer of the Original Code is |
| * Sun Microsystems, Inc. |
| * Portions created by the Initial Developer are Copyright (C) 2003 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Douglas Stebila <douglas@stebila.ca>, Sun Microsystems Laboratories |
| * |
| * Last Modified Date from the Original Code: May 2017 |
| *********************************************************************** */ |
| |
| #ifndef _ECL_H |
| #define _ECL_H |
| |
| /* Although this is not an exported header file, code which uses elliptic |
| * curve point operations will need to include it. */ |
| |
| #include "ecl-exp.h" |
| #include "mpi.h" |
| |
| struct ECGroupStr; |
| typedef struct ECGroupStr ECGroup; |
| |
| /* Construct ECGroup from hexadecimal representations of parameters. */ |
| ECGroup *ECGroup_fromHex(const ECCurveParams * params, int kmflag); |
| |
| /* Construct ECGroup from named parameters. */ |
| ECGroup *ECGroup_fromName(const ECCurveName name, int kmflag); |
| |
| /* Free an allocated ECGroup. */ |
| void ECGroup_free(ECGroup *group); |
| |
| /* Construct ECCurveParams from an ECCurveName */ |
| ECCurveParams *EC_GetNamedCurveParams(const ECCurveName name, int kmflag); |
| |
| /* Duplicates an ECCurveParams */ |
| ECCurveParams *ECCurveParams_dup(const ECCurveParams * params, int kmflag); |
| |
| /* Free an allocated ECCurveParams */ |
| void EC_FreeCurveParams(ECCurveParams * params); |
| |
| /* Elliptic curve scalar-point multiplication. Computes Q(x, y) = k * P(x, |
| * y). If x, y = NULL, then P is assumed to be the generator (base point) |
| * of the group of points on the elliptic curve. Input and output values |
| * are assumed to be NOT field-encoded. */ |
| mp_err ECPoint_mul(const ECGroup *group, const mp_int *k, const mp_int *px, |
| const mp_int *py, mp_int *qx, mp_int *qy, |
| int timing); |
| |
| /* Elliptic curve scalar-point multiplication. Computes Q(x, y) = k1 * G + |
| * k2 * P(x, y), where G is the generator (base point) of the group of |
| * points on the elliptic curve. Input and output values are assumed to |
| * be NOT field-encoded. */ |
| mp_err ECPoints_mul(const ECGroup *group, const mp_int *k1, |
| const mp_int *k2, const mp_int *px, const mp_int *py, |
| mp_int *qx, mp_int *qy, int timing); |
| |
| /* Validates an EC public key as described in Section 5.2.2 of X9.62. |
| * Returns MP_YES if the public key is valid, MP_NO if the public key |
| * is invalid, or an error code if the validation could not be |
| * performed. */ |
| mp_err ECPoint_validate(const ECGroup *group, const mp_int *px, const |
| mp_int *py); |
| |
| #endif /* _ECL_H */ |
