1 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
2 * project 1999.
3 */
4 /* ====================================================================
5 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
23 *
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * licensing@OpenSSL.org.
28 *
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
32 *
33 * 6. Redistributions of any form whatsoever must retain the following
34 * acknowledgment:
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
37 *
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
51 *
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com). */
55
56 #include <string.h>
57
58 #include <openssl/asn1t.h>
59 #include <openssl/err.h>
60 #include <openssl/pkcs8.h>
61 #include <openssl/rand.h>
62 #include <openssl/x509.h>
63
64 #include "internal.h"
65
66
67 /* PKCS#5 password based encryption structure */
68
69 ASN1_SEQUENCE(PBEPARAM) = {
70 ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING),
71 ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER)
72 } ASN1_SEQUENCE_END(PBEPARAM)
73
74 IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM)
75
76
77 /* Set an algorithm identifier for a PKCS#5 PBE algorithm */
78
79 int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
80 const unsigned char *salt, int saltlen)
81 {
82 PBEPARAM *pbe=NULL;
83 ASN1_STRING *pbe_str=NULL;
84 unsigned char *sstr;
85
86 pbe = PBEPARAM_new();
87 if (!pbe)
88 {
89 OPENSSL_PUT_ERROR(PKCS8, PKCS5_pbe_set0_algor, ERR_R_MALLOC_FAILURE);
90 goto err;
91 }
92 if(iter <= 0)
93 iter = PKCS5_DEFAULT_ITERATIONS;
94 if (!ASN1_INTEGER_set(pbe->iter, iter))
95 {
96 OPENSSL_PUT_ERROR(PKCS8, PKCS5_pbe_set0_algor, ERR_R_MALLOC_FAILURE);
97 goto err;
98 }
99 if (!saltlen)
100 saltlen = PKCS5_SALT_LEN;
101 if (!ASN1_STRING_set(pbe->salt, NULL, saltlen))
102 {
103 OPENSSL_PUT_ERROR(PKCS8, PKCS5_pbe_set0_algor, ERR_R_MALLOC_FAILURE);
104 goto err;
105 }
106 sstr = ASN1_STRING_data(pbe->salt);
107 if (salt)
108 memcpy(sstr, salt, saltlen);
109 else if (!RAND_bytes(sstr, saltlen))
110 goto err;
111
112 if(!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str))
113 {
114 OPENSSL_PUT_ERROR(PKCS8, PKCS5_pbe_set0_algor, ERR_R_MALLOC_FAILURE);
115 goto err;
116 }
117
118 PBEPARAM_free(pbe);
119 pbe = NULL;
120
121 if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str))
122 return 1;
123
124 err:
125 if (pbe != NULL)
126 PBEPARAM_free(pbe);
127 if (pbe_str != NULL)
128 ASN1_STRING_free(pbe_str);
129 return 0;
130 }
131
132 /* Return an algorithm identifier for a PKCS#5 PBE algorithm */
133
PKCS5_pbe_set(int alg,int iter,const unsigned char * salt,int saltlen)134 X509_ALGOR *PKCS5_pbe_set(int alg, int iter,
135 const unsigned char *salt, int saltlen)
136 {
137 X509_ALGOR *ret;
138 ret = X509_ALGOR_new();
139 if (!ret)
140 {
141 OPENSSL_PUT_ERROR(PKCS8, PKCS5_pbe_set, ERR_R_MALLOC_FAILURE);
142 return NULL;
143 }
144
145 if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen))
146 return ret;
147
148 X509_ALGOR_free(ret);
149 return NULL;
150 }
151