1 /******************************************************************************
2  *
3  *  Copyright (C) 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 using Elliptic Curve Cryptography for private public key
22   *
23   ******************************************************************************/
24 
25 #pragma once
26 
27 #include "p_256_multprecision.h"
28 
29 typedef unsigned long  DWORD;
30 
31 typedef struct {
32     DWORD x[KEY_LENGTH_DWORDS_P256];
33     DWORD y[KEY_LENGTH_DWORDS_P256];
34     DWORD z[KEY_LENGTH_DWORDS_P256];
35 } Point;
36 
37 typedef struct {
38     // curve's coefficients
39     DWORD a[KEY_LENGTH_DWORDS_P256];
40     DWORD b[KEY_LENGTH_DWORDS_P256];
41 
42     //whether a is -3
43     int a_minus3;
44 
45     // prime modulus
46     DWORD p[KEY_LENGTH_DWORDS_P256];
47 
48     // Omega, p = 2^m -omega
49     DWORD omega[KEY_LENGTH_DWORDS_P256];
50 
51     // base point, a point on E of order r
52     Point G;
53 
54 } elliptic_curve_t;
55 
56 extern elliptic_curve_t curve;
57 extern elliptic_curve_t curve_p256;
58 
59 void ECC_PointMult_Bin_NAF(Point *q, Point *p, DWORD *n, uint32_t keyLength);
60 
61 #define ECC_PointMult(q, p, n, keyLength)  ECC_PointMult_Bin_NAF(q, p, n, keyLength)
62 
63 void p_256_init_curve(UINT32 keyLength);
64 
65 
66