1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/* ====================================================================
* Copyright (c) 1998-2014 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#ifndef HEADER_BN_INT_H
#define HEADER_BN_INT_H
#include <openssl/bn.h>
#ifdef __cplusplus
extern "C" {
#endif
#define bn_expand(a,bits) ((((((bits+BN_BITS2-1))/BN_BITS2)) <= (a)->dmax)?\
(a):bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2))
BIGNUM *bn_wexpand(BIGNUM *a, int words);
BIGNUM *bn_expand2(BIGNUM *a, int words);
void bn_correct_top(BIGNUM *a);
/* Determine the modified width-(w+1) Non-Adjacent Form (wNAF) of 'scalar'.
* This is an array r[] of values that are either zero or odd with an
* absolute value less than 2^w satisfying
* scalar = \sum_j r[j]*2^j
* where at most one of any w+1 consecutive digits is non-zero
* with the exception that the most significant digit may be only
* w-1 zeros away from that next non-zero digit.
*/
signed char *bn_compute_wNAF(const BIGNUM *scalar, int w, size_t *ret_len);
int bn_get_top(const BIGNUM *a);
void bn_set_top(BIGNUM *a, int top);
int bn_get_dmax(const BIGNUM *a);
/* Set all words to zero */
void bn_set_all_zero(BIGNUM *a);
/*
* Copy the internal BIGNUM words into out which holds size elements (and size
* must be bigger than top)
*/
int bn_copy_words(BN_ULONG *out, const BIGNUM *in, int size);
BN_ULONG *bn_get_words(const BIGNUM *a);
/*
* Set the internal data words in a to point to words which contains size
* elements. The BN_FLG_STATIC_DATA flag is set
*/
void bn_set_static_words(BIGNUM *a, BN_ULONG *words, int size);
/*
* Copy data into the BIGNUM. The caller must check that dmax is sufficient to
* hold the data
*/
void bn_set_data(BIGNUM *a, const void *data, size_t size);
size_t bn_sizeof_BIGNUM(void);
/*
* Return element el from an array of BIGNUMs starting at base (required
* because callers do not know the size of BIGNUM at compilation time)
*/
BIGNUM *bn_array_el(BIGNUM *base, int el);
#ifdef __cplusplus
}
#endif
#endif
|
