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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*******************************************************************************
* Copyright 2013-2018 Intel Corporation
* All Rights Reserved.
*
* If this software was obtained under the Intel Simplified Software License,
* the following terms apply:
*
* The source code, information and material ("Material") contained herein is
* owned by Intel Corporation or its suppliers or licensors, and title to such
* Material remains with Intel Corporation or its suppliers or licensors. The
* Material contains proprietary information of Intel or its suppliers and
* licensors. The Material is protected by worldwide copyright laws and treaty
* provisions. No part of the Material may be used, copied, reproduced,
* modified, published, uploaded, posted, transmitted, distributed or disclosed
* in any way without Intel's prior express written permission. No license under
* any patent, copyright or other intellectual property rights in the Material
* is granted to or conferred upon you, either expressly, by implication,
* inducement, estoppel or otherwise. Any license under such intellectual
* property rights must be express and approved by Intel in writing.
*
* Unless otherwise agreed by Intel in writing, you may not remove or alter this
* notice or any other notice embedded in Materials by Intel or Intel's
* suppliers or licensors in any way.
*
*
* If this software was obtained under the Apache License, Version 2.0 (the
* "License"), the following terms apply:
*
* 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.
*******************************************************************************/
/*
//
// Purpose:
// Cryptography Primitive.
// Internal Definitions and
// Internal ng RSA Function Prototypes
//
//
*/
#if !defined(_CP_NG_MONT_EXP_STUFF_H)
#define _CP_NG_MONT_EXP_STUFF_H
#include "pcpbnuimpl.h"
#include "pcpbn.h"
#include "gsmodstuff.h"
/*
// optimal size of fixed window exponentiation
*/
__INLINE cpSize gsMontExp_WinSize(cpSize bitsize)
{
#if defined(_USE_WINDOW_EXP_)
// new computations
return
#if (_IPP !=_IPP_M5) /*limited by 6 or 4 (LOG_CACHE_LINE_SIZE); we use it for windowing-exp imtigation */
bitsize> 4096? 6 : /* 4096- .. . */
bitsize> 2666? 5 : /* 2666 - 4095 */
#endif
bitsize> 717? 4 : /* 717 - 2665 */
bitsize> 178? 3 : /* 178 - 716 */
bitsize> 41? 2 : 1; /* 41 - 177 */
#else
UNREFERENCED_PARAMETER(bitsize);
return 1;
#endif
}
/*
// Montgomery encoding/decoding
*/
__INLINE cpSize gsMontEnc_BNU(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pXreg, cpSize nsX,
const gsModEngine* pMont)
{
cpSize nsM = MOD_LEN( pMont );
ZEXPAND_COPY_BNU(pR, nsM, pXreg, nsX);
MOD_METHOD( pMont )->encode(pR, pR, (gsModEngine*)pMont);
return nsM;
}
__INLINE cpSize gsMontDec_BNU(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pXmont,
gsModEngine* pMont)
{
cpSize nsM = MOD_LEN(pMont);
MOD_METHOD( pMont )->decode(pR, pXmont, (gsModEngine*)pMont);
return nsM;
}
__INLINE void gsMontEnc_BN(IppsBigNumState* pRbn,
const IppsBigNumState* pXbn,
gsModEngine* pMont)
{
BNU_CHUNK_T* pR = BN_NUMBER(pRbn);
cpSize nsM = MOD_LEN(pMont);
gsMontEnc_BNU(pR, BN_NUMBER(pXbn), BN_SIZE(pXbn), pMont);
FIX_BNU(pR, nsM);
BN_SIZE(pRbn) = nsM;
BN_SIGN(pRbn) = ippBigNumPOS;
}
/* exponentiation buffer size */
#define gsMontExpBinBuffer OWNAPI(gsMontExpBinBuffer)
#define gsMontExpWinBuffer OWNAPI(gsMontExpWinBuffer)
cpSize gsMontExpBinBuffer(int modulusBits);
cpSize gsMontExpWinBuffer(int modulusBits);
/* exponentiation prototype */
typedef cpSize (*ngMontExp)(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
/*
// "fast" and "safe" binary montgomery exponentiation ("fast" version)
*/
#define gsMontExpBin_BNU OWNAPI(gsMontExpBin_BNU)
#define gsModExpBin_BNU OWNAPI(gsModExpBin_BNU)
cpSize gsMontExpBin_BNU(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
cpSize gsModExpBin_BNU(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
#define gsMontExpBin_BNU_sscm OWNAPI(gsMontExpBin_BNU_sscm)
#define gsModExpBin_BNU_sscm OWNAPI(gsModExpBin_BNU_sscm)
cpSize gsMontExpBin_BNU_sscm(BNU_CHUNK_T* pY,
const BNU_CHUNK_T* pX, cpSize nsX,
const BNU_CHUNK_T* pE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
cpSize gsModExpBin_BNU_sscm(BNU_CHUNK_T* pY,
const BNU_CHUNK_T* pX, cpSize nsX,
const BNU_CHUNK_T* pE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
/*
// "fast" and "safe" fixed-size window montgomery exponentiation
*/
#define gsMontExpWin_BNU OWNAPI(gsMontExpWin_BNU_mont)
#define gsModExpWin_BNU OWNAPI(gsModExpWin_BNU)
cpSize gsMontExpWin_BNU(BNU_CHUNK_T* pY,
const BNU_CHUNK_T* pX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
cpSize gsModExpWin_BNU(BNU_CHUNK_T* pY,
const BNU_CHUNK_T* pX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
#define gsMontExpWin_BNU_sscm OWNAPI(gsMontExpWin_BNU_mont_sscm)
#define gsModExpWin_BNU_sscm OWNAPI(gsModExpWin_BNU_sscm)
cpSize gsMontExpWin_BNU_sscm(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
cpSize gsModExpWin_BNU_sscm(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nbitsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
#endif /* _CP_NG_MONT_EXP_STUFF_H */
|
