1 /******************************************************************************
2 *
3 * Copyright 2006-2015 Broadcom Corporation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 /*******************************************************************************
20 *
21 * This file contains simple pairing algorithms
22 *
23 ******************************************************************************/
24
25 #include <string.h>
26 #include "p_256_ecc_pp.h"
27
p_256_init_curve()28 void p_256_init_curve() {
29 elliptic_curve_t* ec = &curve_p256;
30
31 ec->p[7] = 0xFFFFFFFF;
32 ec->p[6] = 0x00000001;
33 ec->p[5] = 0x0;
34 ec->p[4] = 0x0;
35 ec->p[3] = 0x0;
36 ec->p[2] = 0xFFFFFFFF;
37 ec->p[1] = 0xFFFFFFFF;
38 ec->p[0] = 0xFFFFFFFF;
39
40 memset(ec->omega, 0, KEY_LENGTH_DWORDS_P256);
41 memset(ec->a, 0, KEY_LENGTH_DWORDS_P256);
42
43 ec->a_minus3 = true;
44
45 // b
46 ec->b[7] = 0x5ac635d8;
47 ec->b[6] = 0xaa3a93e7;
48 ec->b[5] = 0xb3ebbd55;
49 ec->b[4] = 0x769886bc;
50 ec->b[3] = 0x651d06b0;
51 ec->b[2] = 0xcc53b0f6;
52 ec->b[1] = 0x3bce3c3e;
53 ec->b[0] = 0x27d2604b;
54
55 // base point
56 ec->G.x[7] = 0x6b17d1f2;
57 ec->G.x[6] = 0xe12c4247;
58 ec->G.x[5] = 0xf8bce6e5;
59 ec->G.x[4] = 0x63a440f2;
60 ec->G.x[3] = 0x77037d81;
61 ec->G.x[2] = 0x2deb33a0;
62 ec->G.x[1] = 0xf4a13945;
63 ec->G.x[0] = 0xd898c296;
64
65 ec->G.y[7] = 0x4fe342e2;
66 ec->G.y[6] = 0xfe1a7f9b;
67 ec->G.y[5] = 0x8ee7eb4a;
68 ec->G.y[4] = 0x7c0f9e16;
69 ec->G.y[3] = 0x2bce3357;
70 ec->G.y[2] = 0x6b315ece;
71 ec->G.y[1] = 0xcbb64068;
72 ec->G.y[0] = 0x37bf51f5;
73 }
74