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
|
/*
* Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/core_names.h>
#include "internal/ffc.h"
#include "internal/sizes.h"
/*
* The intention with the "backend" source file is to offer backend support
* for legacy backends (EVP_PKEY_ASN1_METHOD and EVP_PKEY_METHOD) and provider
* implementations alike.
*/
int ffc_params_fromdata(FFC_PARAMS *ffc, const OSSL_PARAM params[])
{
const OSSL_PARAM *prm;
const OSSL_PARAM *param_p, *param_q, *param_g;
BIGNUM *p = NULL, *q = NULL, *g = NULL, *j = NULL;
int i;
if (ffc == NULL)
return 0;
prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_GROUP);
if (prm != NULL) {
if (prm->data_type != OSSL_PARAM_UTF8_STRING)
goto err;
if (!ffc_set_group_pqg(ffc, prm->data))
goto err;
}
param_p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_P);
param_g = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_G);
param_q = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_Q);
if ((param_p != NULL && !OSSL_PARAM_get_BN(param_p, &p))
|| (param_q != NULL && !OSSL_PARAM_get_BN(param_q, &q))
|| (param_g != NULL && !OSSL_PARAM_get_BN(param_g, &g)))
goto err;
prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_GINDEX);
if (prm != NULL) {
if (!OSSL_PARAM_get_int(prm, &i))
goto err;
ffc->gindex = i;
}
prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PCOUNTER);
if (prm != NULL) {
if (!OSSL_PARAM_get_int(prm, &i))
goto err;
ffc->pcounter = i;
}
prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_COFACTOR);
if (prm != NULL) {
if (!OSSL_PARAM_get_BN(prm, &j))
goto err;
j = NULL;
}
prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_H);
if (prm != NULL) {
if (!OSSL_PARAM_get_int(prm, &i))
goto err;
ffc->h = i;
}
prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_SEED);
if (prm != NULL) {
if (prm->data_type != OSSL_PARAM_OCTET_STRING)
goto err;
if (!ffc_params_set_seed(ffc, prm->data, prm->data_size))
goto err;
}
ffc_params_set0_pqg(ffc, p, q, g);
ffc_params_set0_j(ffc, j);
return 1;
err:
BN_free(j);
BN_free(p);
BN_free(q);
BN_free(g);
return 0;
}
|