Branch data Line data Source code
1 : : /* p5_pbe.c */
2 : : /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 : : * project 1999.
4 : : */
5 : : /* ====================================================================
6 : : * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 : : *
8 : : * Redistribution and use in source and binary forms, with or without
9 : : * modification, are permitted provided that the following conditions
10 : : * are met:
11 : : *
12 : : * 1. Redistributions of source code must retain the above copyright
13 : : * notice, this list of conditions and the following disclaimer.
14 : : *
15 : : * 2. Redistributions in binary form must reproduce the above copyright
16 : : * notice, this list of conditions and the following disclaimer in
17 : : * the documentation and/or other materials provided with the
18 : : * distribution.
19 : : *
20 : : * 3. All advertising materials mentioning features or use of this
21 : : * software must display the following acknowledgment:
22 : : * "This product includes software developed by the OpenSSL Project
23 : : * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 : : *
25 : : * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 : : * endorse or promote products derived from this software without
27 : : * prior written permission. For written permission, please contact
28 : : * licensing@OpenSSL.org.
29 : : *
30 : : * 5. Products derived from this software may not be called "OpenSSL"
31 : : * nor may "OpenSSL" appear in their names without prior written
32 : : * permission of the OpenSSL Project.
33 : : *
34 : : * 6. Redistributions of any form whatsoever must retain the following
35 : : * acknowledgment:
36 : : * "This product includes software developed by the OpenSSL Project
37 : : * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 : : *
39 : : * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 : : * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 : : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 : : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 : : * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 : : * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 : : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 : : * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 : : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 : : * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 : : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 : : * OF THE POSSIBILITY OF SUCH DAMAGE.
51 : : * ====================================================================
52 : : *
53 : : * This product includes cryptographic software written by Eric Young
54 : : * (eay@cryptsoft.com). This product includes software written by Tim
55 : : * Hudson (tjh@cryptsoft.com).
56 : : *
57 : : */
58 : :
59 : : #include <stdio.h>
60 : : #include "cryptlib.h"
61 : : #include <openssl/asn1t.h>
62 : : #include <openssl/x509.h>
63 : : #include <openssl/rand.h>
64 : :
65 : : /* PKCS#5 password based encryption structure */
66 : :
67 : : ASN1_SEQUENCE(PBEPARAM) = {
68 : : ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING),
69 : : ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER)
70 : : } ASN1_SEQUENCE_END(PBEPARAM)
71 : :
72 : 0 : IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM)
73 : :
74 : :
75 : : /* Set an algorithm identifier for a PKCS#5 PBE algorithm */
76 : :
77 : 0 : int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
78 : : const unsigned char *salt, int saltlen)
79 : : {
80 : 0 : PBEPARAM *pbe=NULL;
81 : 0 : ASN1_STRING *pbe_str=NULL;
82 : : unsigned char *sstr;
83 : :
84 : 0 : pbe = PBEPARAM_new();
85 [ # # ]: 0 : if (!pbe)
86 : : {
87 : 0 : ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
88 : 0 : goto err;
89 : : }
90 [ # # ]: 0 : if(iter <= 0)
91 : 0 : iter = PKCS5_DEFAULT_ITER;
92 [ # # ]: 0 : if (!ASN1_INTEGER_set(pbe->iter, iter))
93 : : {
94 : 0 : ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
95 : 0 : goto err;
96 : : }
97 [ # # ]: 0 : if (!saltlen)
98 : 0 : saltlen = PKCS5_SALT_LEN;
99 [ # # ]: 0 : if (!ASN1_STRING_set(pbe->salt, NULL, saltlen))
100 : : {
101 : 0 : ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
102 : 0 : goto err;
103 : : }
104 : 0 : sstr = ASN1_STRING_data(pbe->salt);
105 [ # # ]: 0 : if (salt)
106 : 0 : memcpy(sstr, salt, saltlen);
107 [ # # ]: 0 : else if (RAND_pseudo_bytes(sstr, saltlen) < 0)
108 : : goto err;
109 : :
110 [ # # ]: 0 : if(!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str))
111 : : {
112 : 0 : ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
113 : 0 : goto err;
114 : : }
115 : :
116 : 0 : PBEPARAM_free(pbe);
117 : 0 : pbe = NULL;
118 : :
119 [ # # ]: 0 : if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str))
120 : : return 1;
121 : :
122 : : err:
123 [ # # ]: 0 : if (pbe != NULL)
124 : 0 : PBEPARAM_free(pbe);
125 [ # # ]: 0 : if (pbe_str != NULL)
126 : 0 : ASN1_STRING_free(pbe_str);
127 : : return 0;
128 : : }
129 : :
130 : : /* Return an algorithm identifier for a PKCS#5 PBE algorithm */
131 : :
132 : 0 : X509_ALGOR *PKCS5_pbe_set(int alg, int iter,
133 : : const unsigned char *salt, int saltlen)
134 : : {
135 : : X509_ALGOR *ret;
136 : 0 : ret = X509_ALGOR_new();
137 [ # # ]: 0 : if (!ret)
138 : : {
139 : 0 : ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
140 : 0 : return NULL;
141 : : }
142 : :
143 [ # # ]: 0 : if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen))
144 : : return ret;
145 : :
146 : 0 : X509_ALGOR_free(ret);
147 : 0 : return NULL;
148 : : }
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