1 /* $OpenBSD: p5_pbe.c,v 1.19 2015/02/11 03:39:51 jsing Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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)
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49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
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).
63 #include <openssl/asn1t.h>
64 #include <openssl/err.h>
65 #include <openssl/x509.h>
67 /* PKCS#5 password based encryption structure */
69 static const ASN1_TEMPLATE PBEPARAM_seq_tt[] = {
71 .offset = offsetof(PBEPARAM, salt),
73 .item = &ASN1_OCTET_STRING_it,
76 .offset = offsetof(PBEPARAM, iter),
78 .item = &ASN1_INTEGER_it,
82 const ASN1_ITEM PBEPARAM_it = {
83 .itype = ASN1_ITYPE_SEQUENCE,
84 .utype = V_ASN1_SEQUENCE,
85 .templates = PBEPARAM_seq_tt,
86 .tcount = sizeof(PBEPARAM_seq_tt) / sizeof(ASN1_TEMPLATE),
87 .size = sizeof(PBEPARAM),
93 d2i_PBEPARAM(PBEPARAM **a, const unsigned char **in, long len)
95 return (PBEPARAM *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
100 i2d_PBEPARAM(PBEPARAM *a, unsigned char **out)
102 return ASN1_item_i2d((ASN1_VALUE *)a, out, &PBEPARAM_it);
108 return (PBEPARAM *)ASN1_item_new(&PBEPARAM_it);
112 PBEPARAM_free(PBEPARAM *a)
114 ASN1_item_free((ASN1_VALUE *)a, &PBEPARAM_it);
118 /* Set an algorithm identifier for a PKCS#5 PBE algorithm */
121 PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
122 const unsigned char *salt, int saltlen)
124 PBEPARAM *pbe = NULL;
125 ASN1_STRING *pbe_str = NULL;
128 pbe = PBEPARAM_new();
130 ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE);
134 iter = PKCS5_DEFAULT_ITER;
135 if (!ASN1_INTEGER_set(pbe->iter, iter)) {
136 ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE);
140 saltlen = PKCS5_SALT_LEN;
141 if (!ASN1_STRING_set(pbe->salt, NULL, saltlen)) {
142 ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE);
145 sstr = ASN1_STRING_data(pbe->salt);
147 memcpy(sstr, salt, saltlen);
149 arc4random_buf(sstr, saltlen);
151 if (!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str)) {
152 ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE);
159 if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str))
165 ASN1_STRING_free(pbe_str);
169 /* Return an algorithm identifier for a PKCS#5 PBE algorithm */
172 PKCS5_pbe_set(int alg, int iter, const unsigned char *salt, int saltlen)
175 ret = X509_ALGOR_new();
177 ASN1err(ASN1_F_PKCS5_PBE_SET, ERR_R_MALLOC_FAILURE);
181 if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen))
184 X509_ALGOR_free(ret);