2018-05-04 16:08:28 +02:00
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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2015-10-21 05:03:22 +02:00
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/* Although this is not an exported header file, code which uses elliptic
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* curve point operations will need to include it. */
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#ifndef __ecl_h_
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#define __ecl_h_
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#include "ecl-exp.h"
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#include "mpi.h"
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struct ECGroupStr;
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typedef struct ECGroupStr ECGroup;
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/* Construct ECGroup from hexadecimal representations of parameters. */
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ECGroup *ECGroup_fromHex(const ECCurveParams * params);
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/* Construct ECGroup from named parameters. */
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ECGroup *ECGroup_fromName(const ECCurveName name);
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/* Free an allocated ECGroup. */
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void ECGroup_free(ECGroup *group);
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/* Construct ECCurveParams from an ECCurveName */
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ECCurveParams *EC_GetNamedCurveParams(const ECCurveName name);
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/* Duplicates an ECCurveParams */
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ECCurveParams *ECCurveParams_dup(const ECCurveParams * params);
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/* Free an allocated ECCurveParams */
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void EC_FreeCurveParams(ECCurveParams * params);
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/* Elliptic curve scalar-point multiplication. Computes Q(x, y) = k * P(x,
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* y). If x, y = NULL, then P is assumed to be the generator (base point)
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* of the group of points on the elliptic curve. Input and output values
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* are assumed to be NOT field-encoded. */
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mp_err ECPoint_mul(const ECGroup *group, const mp_int *k, const mp_int *px,
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const mp_int *py, mp_int *qx, mp_int *qy);
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/* Elliptic curve scalar-point multiplication. Computes Q(x, y) = k1 * G +
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* k2 * P(x, y), where G is the generator (base point) of the group of
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* points on the elliptic curve. Input and output values are assumed to
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* be NOT field-encoded. */
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mp_err ECPoints_mul(const ECGroup *group, const mp_int *k1,
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const mp_int *k2, const mp_int *px, const mp_int *py,
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mp_int *qx, mp_int *qy);
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/* Validates an EC public key as described in Section 5.2.2 of X9.62.
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* Returns MP_YES if the public key is valid, MP_NO if the public key
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* is invalid, or an error code if the validation could not be
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* performed. */
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mp_err ECPoint_validate(const ECGroup *group, const mp_int *px, const
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mp_int *py);
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#endif /* __ecl_h_ */
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