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
|
/*
* Copyright 2020-2021 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 <stdlib.h>
#include <openssl/core_names.h>
#include <openssl/err.h>
#include <openssl/dsa.h>
#include <openssl/evp.h>
#include "crypto/evp.h"
static int dsa_paramgen_check(EVP_PKEY_CTX *ctx)
{
if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
return -2;
}
/* If key type not DSA return error */
if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_DSA)
return -1;
return 1;
}
int EVP_PKEY_CTX_set_dsa_paramgen_type(EVP_PKEY_CTX *ctx, const char *name)
{
int ret;
OSSL_PARAM params[2], *p = params;
if ((ret = dsa_paramgen_check(ctx)) <= 0)
return ret;
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_TYPE,
(char *)name, 0);
*p++ = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, params);
}
int EVP_PKEY_CTX_set_dsa_paramgen_gindex(EVP_PKEY_CTX *ctx, int gindex)
{
int ret;
OSSL_PARAM params[2], *p = params;
if ((ret = dsa_paramgen_check(ctx)) <= 0)
return ret;
*p++ = OSSL_PARAM_construct_int(OSSL_PKEY_PARAM_FFC_GINDEX, &gindex);
*p++ = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, params);
}
int EVP_PKEY_CTX_set_dsa_paramgen_seed(EVP_PKEY_CTX *ctx,
const unsigned char *seed,
size_t seedlen)
{
int ret;
OSSL_PARAM params[2], *p = params;
if ((ret = dsa_paramgen_check(ctx)) <= 0)
return ret;
*p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_FFC_SEED,
(void *)seed, seedlen);
*p++ = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, params);
}
int EVP_PKEY_CTX_set_dsa_paramgen_bits(EVP_PKEY_CTX *ctx, int nbits)
{
int ret;
OSSL_PARAM params[2], *p = params;
size_t bits = nbits;
if ((ret = dsa_paramgen_check(ctx)) <= 0)
return ret;
*p++ = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_FFC_PBITS, &bits);
*p++ = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, params);
}
int EVP_PKEY_CTX_set_dsa_paramgen_q_bits(EVP_PKEY_CTX *ctx, int qbits)
{
int ret;
OSSL_PARAM params[2], *p = params;
size_t bits2 = qbits;
if ((ret = dsa_paramgen_check(ctx)) <= 0)
return ret;
*p++ = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_FFC_QBITS, &bits2);
*p++ = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, params);
}
int EVP_PKEY_CTX_set_dsa_paramgen_md_props(EVP_PKEY_CTX *ctx,
const char *md_name,
const char *md_properties)
{
int ret;
OSSL_PARAM params[3], *p = params;
if ((ret = dsa_paramgen_check(ctx)) <= 0)
return ret;
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST,
(char *)md_name, 0);
if (md_properties != NULL)
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST_PROPS,
(char *)md_properties, 0);
*p++ = OSSL_PARAM_construct_end();
return EVP_PKEY_CTX_set_params(ctx, params);
}
#if !defined(FIPS_MODULE)
int EVP_PKEY_CTX_set_dsa_paramgen_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
{
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DSA_PARAMGEN_MD, 0, (void *)(md));
}
#endif
|
