66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
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/******************************************************************************
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*
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* Copyright (C) 2006-2015 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This file contains simple pairing algorithms using Elliptic Curve Cryptography for private public key
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*
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******************************************************************************/
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#pragma once
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#include "p_256_multprecision.h"
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typedef unsigned long DWORD;
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typedef struct {
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DWORD x[KEY_LENGTH_DWORDS_P256];
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DWORD y[KEY_LENGTH_DWORDS_P256];
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DWORD z[KEY_LENGTH_DWORDS_P256];
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} Point;
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typedef struct {
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// curve's coefficients
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DWORD a[KEY_LENGTH_DWORDS_P256];
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DWORD b[KEY_LENGTH_DWORDS_P256];
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//whether a is -3
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int a_minus3;
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// prime modulus
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DWORD p[KEY_LENGTH_DWORDS_P256];
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// Omega, p = 2^m -omega
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DWORD omega[KEY_LENGTH_DWORDS_P256];
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// base point, a point on E of order r
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Point G;
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} elliptic_curve_t;
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extern elliptic_curve_t curve;
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extern elliptic_curve_t curve_p256;
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void ECC_PointMult_Bin_NAF(Point *q, Point *p, DWORD *n, uint32_t keyLength);
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#define ECC_PointMult(q, p, n, keyLength) ECC_PointMult_Bin_NAF(q, p, n, keyLength)
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void p_256_init_curve(UINT32 keyLength);
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