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92 lines
3.7 KiB
C
92 lines
3.7 KiB
C
/*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the elliptic curve math library.
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*
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* The Initial Developer of the Original Code is
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* Sun Microsystems, Inc.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Douglas Stebila <douglas@stebila.ca>, Sun Microsystems Laboratories
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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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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