mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* Copyright (C) 2006-2015 Broadcom Corporation
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at:
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* This file contains simple pairing algorithms
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include "p_256_ecc_pp.h"
|
||
|
|
|
||
|
|
void p_256_init_curve(UINT32 keyLength)
|
||
|
|
{
|
||
|
|
elliptic_curve_t *ec;
|
||
|
|
|
||
|
|
if(keyLength == KEY_LENGTH_DWORDS_P256)
|
||
|
|
{
|
||
|
|
ec = &curve_p256;
|
||
|
|
|
||
|
|
ec->p[7] = 0xFFFFFFFF;
|
||
|
|
ec->p[6] = 0x00000001;
|
||
|
|
ec->p[5] = 0x0;
|
||
|
|
ec->p[4] = 0x0;
|
||
|
|
ec->p[3] = 0x0;
|
||
|
|
ec->p[2] = 0xFFFFFFFF;
|
||
|
|
ec->p[1] = 0xFFFFFFFF;
|
||
|
|
ec->p[0] = 0xFFFFFFFF;
|
||
|
|
|
||
|
|
memset(ec->omega, 0, KEY_LENGTH_DWORDS_P256);
|
||
|
|
memset(ec->a, 0, KEY_LENGTH_DWORDS_P256);
|
||
|
|
|
||
|
|
ec->a_minus3 = TRUE;
|
||
|
|
|
||
|
|
//b
|
||
|
|
ec->b[7] = 0x5ac635d8;
|
||
|
|
ec->b[6] = 0xaa3a93e7;
|
||
|
|
ec->b[5] = 0xb3ebbd55;
|
||
|
|
ec->b[4] = 0x769886bc;
|
||
|
|
ec->b[3] = 0x651d06b0;
|
||
|
|
ec->b[2] = 0xcc53b0f6;
|
||
|
|
ec->b[1] = 0x3bce3c3e;
|
||
|
|
ec->b[0] = 0x27d2604b;
|
||
|
|
|
||
|
|
//base point
|
||
|
|
ec->G.x[7] = 0x6b17d1f2;
|
||
|
|
ec->G.x[6] = 0xe12c4247;
|
||
|
|
ec->G.x[5] = 0xf8bce6e5;
|
||
|
|
ec->G.x[4] = 0x63a440f2;
|
||
|
|
ec->G.x[3] = 0x77037d81;
|
||
|
|
ec->G.x[2] = 0x2deb33a0;
|
||
|
|
ec->G.x[1] = 0xf4a13945;
|
||
|
|
ec->G.x[0] = 0xd898c296;
|
||
|
|
|
||
|
|
ec->G.y[7] = 0x4fe342e2;
|
||
|
|
ec->G.y[6] = 0xfe1a7f9b;
|
||
|
|
ec->G.y[5] = 0x8ee7eb4a;
|
||
|
|
ec->G.y[4] = 0x7c0f9e16;
|
||
|
|
ec->G.y[3] = 0x2bce3357;
|
||
|
|
ec->G.y[2] = 0x6b315ece;
|
||
|
|
ec->G.y[1] = 0xcbb64068;
|
||
|
|
ec->G.y[0] = 0x37bf51f5;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|