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77 lines
2.2 KiB
77 lines
2.2 KiB
/****************************************************************************** |
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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_t keyLength) { |
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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); |
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memset(ec->a, 0, KEY_LENGTH_DWORDS_P256); |
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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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