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
|
/*******************************************************************************
* Copyright 2003-2018 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.
// EC over Prime Finite Field (setup/retrieve domain parameters)
//
// Contents:
// ippsECCPSet()
//
*/
#include "owndefs.h"
#include "owncp.h"
#include "pcpeccp.h"
/*F*
// Name: ippsECCPInitStdSM2
//
// Purpose: Sets up the elliptic curve domain parameters
// over a prime finite field GF(p)
//
// Returns: Reason:
// ippStsNullPtrErr NULL == pPrime
// NULL == pA
// NULL == pB
// NULL == pGX
// NULL == pGY
// NULL == pOrder
// NULL == cofactor
// NULL == pEC
//
// ippStsContextMatchErr illegal pPrime->idCtx
// illegal pA->idCtx
// illegal pB->idCtx
// illegal pGX->idCtx
// illegal pGY->idCtx
// illegal pOrder->idCtx
// illegal pEC->idCtx
//
// ippStsRangeErr not enough room for:
// pPrime
// pA, pB,
// pGX, pGY
// pOrder
//
// ippStsNoErr no errors
//
// Parameters:
// pPrime pointer to the retrieval prime (specify FG(p))
// pA pointer to the retrieval A coefficient of EC equation
// pB pointer to the retrieval B coefficient of EC equation
// pGX,pGY pointer to the retrieval Base Point (x and y coordinates) of EC
// pOrder pointer to the retrieval Base Point order
// cofactor pointer to the retrieval cofactor value
// pEC pointer to the ECC context
//
*F*/
IPPFUN(IppStatus, ippsECCPSet, (const IppsBigNumState* pPrime,
const IppsBigNumState* pA, const IppsBigNumState* pB,
const IppsBigNumState* pGX,const IppsBigNumState* pGY,
const IppsBigNumState* pOrder, int cofactor,
IppsECCPState* pEC))
{
/* test pEC */
IPP_BAD_PTR1_RET(pEC);
/* use aligned EC context */
pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) );
IPP_BADARG_RET(!ECP_TEST_ID(pEC), ippStsContextMatchErr);
/* test pPrime */
IPP_BAD_PTR1_RET(pPrime);
pPrime = (IppsBigNumState*)( IPP_ALIGNED_PTR(pPrime, BN_ALIGNMENT) );
IPP_BADARG_RET(!BN_VALID_ID(pPrime), ippStsContextMatchErr);
IPP_BADARG_RET((cpBN_bitsize(pPrime)>GFP_FEBITLEN(GFP_PMA(ECP_GFP(pEC)))), ippStsRangeErr);
/* test pA and pB */
IPP_BAD_PTR2_RET(pA,pB);
pA = (IppsBigNumState*)( IPP_ALIGNED_PTR(pA, ALIGN_VAL) );
pB = (IppsBigNumState*)( IPP_ALIGNED_PTR(pB, ALIGN_VAL) );
IPP_BADARG_RET(!BN_VALID_ID(pA), ippStsContextMatchErr);
IPP_BADARG_RET(!BN_VALID_ID(pB), ippStsContextMatchErr);
IPP_BADARG_RET(BN_NEGATIVE(pA) || 0<=cpBN_cmp(pA,pPrime), ippStsRangeErr);
IPP_BADARG_RET(BN_NEGATIVE(pB) || 0<=cpBN_cmp(pB,pPrime), ippStsRangeErr);
/* test pG and pGorder pointers */
IPP_BAD_PTR3_RET(pGX,pGY, pOrder);
pGX = (IppsBigNumState*)( IPP_ALIGNED_PTR(pGX, ALIGN_VAL) );
pGY = (IppsBigNumState*)( IPP_ALIGNED_PTR(pGY, ALIGN_VAL) );
pOrder = (IppsBigNumState*)( IPP_ALIGNED_PTR(pOrder, ALIGN_VAL) );
IPP_BADARG_RET(!BN_VALID_ID(pGX), ippStsContextMatchErr);
IPP_BADARG_RET(!BN_VALID_ID(pGY), ippStsContextMatchErr);
IPP_BADARG_RET(!BN_VALID_ID(pOrder), ippStsContextMatchErr);
IPP_BADARG_RET(BN_NEGATIVE(pGX) || 0<=cpBN_cmp(pGX,pPrime), ippStsRangeErr);
IPP_BADARG_RET(BN_NEGATIVE(pGY) || 0<=cpBN_cmp(pGY,pPrime), ippStsRangeErr);
IPP_BADARG_RET((cpBN_bitsize(pOrder)>ECP_ORDBITSIZE(pEC)), ippStsRangeErr);
/* test cofactor */
IPP_BADARG_RET(!(0<cofactor), ippStsRangeErr);
return ECCPSetDP(ippsGFpMethod_pArb(),
BN_SIZE(pPrime), BN_NUMBER(pPrime),
BN_SIZE(pA), BN_NUMBER(pA),
BN_SIZE(pB), BN_NUMBER(pB),
BN_SIZE(pGX), BN_NUMBER(pGX),
BN_SIZE(pGY), BN_NUMBER(pGY),
BN_SIZE(pOrder), BN_NUMBER(pOrder),
(BNU_CHUNK_T)cofactor,
pEC);
}
|