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
|
/*
* Copyright 1999-2020 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 <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/rand.h>
/* PKCS#5 password based encryption structure */
ASN1_SEQUENCE(PBEPARAM) = {
ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING),
ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER)
} ASN1_SEQUENCE_END(PBEPARAM)
IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM)
/* Set an algorithm identifier for a PKCS#5 PBE algorithm */
int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
const unsigned char *salt, int saltlen)
{
PBEPARAM *pbe = NULL;
ASN1_STRING *pbe_str = NULL;
unsigned char *sstr = NULL;
pbe = PBEPARAM_new();
if (pbe == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
goto err;
}
if (iter <= 0)
iter = PKCS5_DEFAULT_ITER;
if (!ASN1_INTEGER_set(pbe->iter, iter)) {
ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
goto err;
}
if (!saltlen)
saltlen = PKCS5_SALT_LEN;
sstr = OPENSSL_malloc(saltlen);
if (sstr == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
goto err;
}
if (salt)
memcpy(sstr, salt, saltlen);
else if (RAND_bytes(sstr, saltlen) <= 0)
goto err;
ASN1_STRING_set0(pbe->salt, sstr, saltlen);
sstr = NULL;
if (!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str)) {
ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
goto err;
}
PBEPARAM_free(pbe);
pbe = NULL;
if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str))
return 1;
err:
OPENSSL_free(sstr);
PBEPARAM_free(pbe);
ASN1_STRING_free(pbe_str);
return 0;
}
/* Return an algorithm identifier for a PKCS#5 PBE algorithm */
X509_ALGOR *PKCS5_pbe_set(int alg, int iter,
const unsigned char *salt, int saltlen)
{
X509_ALGOR *ret;
ret = X509_ALGOR_new();
if (ret == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
return NULL;
}
if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen))
return ret;
X509_ALGOR_free(ret);
return NULL;
}
|
