79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/******************************************************************************
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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
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*
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******************************************************************************/
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#include <string.h>
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#include "p_256_ecc_pp.h"
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void p_256_init_curve(UINT32 keyLength)
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{
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elliptic_curve_t *ec;
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if (keyLength == KEY_LENGTH_DWORDS_P256) {
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ec = &curve_p256;
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ec->p[7] = 0xFFFFFFFF;
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ec->p[6] = 0x00000001;
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ec->p[5] = 0x0;
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ec->p[4] = 0x0;
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ec->p[3] = 0x0;
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ec->p[2] = 0xFFFFFFFF;
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ec->p[1] = 0xFFFFFFFF;
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ec->p[0] = 0xFFFFFFFF;
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memset(ec->omega, 0, KEY_LENGTH_DWORDS_P256 * sizeof(ec->omega[0]));
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memset(ec->a, 0, KEY_LENGTH_DWORDS_P256 * sizeof(ec->a[0]));
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ec->a_minus3 = TRUE;
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//b
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ec->b[7] = 0x5ac635d8;
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ec->b[6] = 0xaa3a93e7;
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ec->b[5] = 0xb3ebbd55;
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ec->b[4] = 0x769886bc;
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ec->b[3] = 0x651d06b0;
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ec->b[2] = 0xcc53b0f6;
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ec->b[1] = 0x3bce3c3e;
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ec->b[0] = 0x27d2604b;
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//base point
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ec->G.x[7] = 0x6b17d1f2;
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ec->G.x[6] = 0xe12c4247;
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ec->G.x[5] = 0xf8bce6e5;
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ec->G.x[4] = 0x63a440f2;
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ec->G.x[3] = 0x77037d81;
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ec->G.x[2] = 0x2deb33a0;
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ec->G.x[1] = 0xf4a13945;
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ec->G.x[0] = 0xd898c296;
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ec->G.y[7] = 0x4fe342e2;
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ec->G.y[6] = 0xfe1a7f9b;
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ec->G.y[5] = 0x8ee7eb4a;
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ec->G.y[4] = 0x7c0f9e16;
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ec->G.y[3] = 0x2bce3357;
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ec->G.y[2] = 0x6b315ece;
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ec->G.y[1] = 0xcbb64068;
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ec->G.y[0] = 0x37bf51f5;
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}
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}
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