]>
Commit | Line | Data |
---|---|---|
031e5cce | 1 | /* p5_pbe.c */ |
d3819813 | 2 | /* |
031e5cce SM |
3 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project |
4 | * 1999. | |
5 | */ | |
6 | /* ==================================================================== | |
7 | * Copyright (c) 1999 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
14 | * notice, this list of conditions and the following disclaimer. | |
15 | * | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in | |
18 | * the documentation and/or other materials provided with the | |
19 | * distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use of this | |
22 | * software must display the following acknowledgment: | |
23 | * "This product includes software developed by the OpenSSL Project | |
24 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
25 | * | |
26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
27 | * endorse or promote products derived from this software without | |
28 | * prior written permission. For written permission, please contact | |
29 | * licensing@OpenSSL.org. | |
30 | * | |
31 | * 5. Products derived from this software may not be called "OpenSSL" | |
32 | * nor may "OpenSSL" appear in their names without prior written | |
33 | * permission of the OpenSSL Project. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
52 | * ==================================================================== | |
53 | * | |
54 | * This product includes cryptographic software written by Eric Young | |
55 | * (eay@cryptsoft.com). This product includes software written by Tim | |
56 | * Hudson (tjh@cryptsoft.com). | |
3e575651 SL |
57 | * |
58 | */ | |
59 | ||
60 | #include <stdio.h> | |
031e5cce | 61 | #include "cryptlib.h" |
3e575651 SL |
62 | #include <openssl/asn1t.h> |
63 | #include <openssl/x509.h> | |
64 | #include <openssl/rand.h> | |
65 | ||
66 | /* PKCS#5 password based encryption structure */ | |
67 | ||
68 | ASN1_SEQUENCE(PBEPARAM) = { | |
d3819813 MTL |
69 | ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING), |
70 | ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER) | |
3e575651 SL |
71 | } ASN1_SEQUENCE_END(PBEPARAM) |
72 | ||
73 | IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM) | |
74 | ||
d3819813 | 75 | /* Set an algorithm identifier for a PKCS#5 PBE algorithm */ |
3e575651 | 76 | |
d3819813 MTL |
77 | int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter, |
78 | const unsigned char *salt, int saltlen) | |
3e575651 | 79 | { |
d3819813 MTL |
80 | PBEPARAM *pbe = NULL; |
81 | ASN1_STRING *pbe_str = NULL; | |
031e5cce | 82 | unsigned char *sstr; |
d3819813 MTL |
83 | |
84 | pbe = PBEPARAM_new(); | |
031e5cce | 85 | if (!pbe) { |
d3819813 MTL |
86 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE); |
87 | goto err; | |
88 | } | |
89 | if (iter <= 0) | |
90 | iter = PKCS5_DEFAULT_ITER; | |
91 | if (!ASN1_INTEGER_set(pbe->iter, iter)) { | |
92 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE); | |
93 | goto err; | |
94 | } | |
95 | if (!saltlen) | |
96 | saltlen = PKCS5_SALT_LEN; | |
031e5cce | 97 | if (!ASN1_STRING_set(pbe->salt, NULL, saltlen)) { |
d3819813 MTL |
98 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE); |
99 | goto err; | |
100 | } | |
031e5cce | 101 | sstr = ASN1_STRING_data(pbe->salt); |
d3819813 MTL |
102 | if (salt) |
103 | memcpy(sstr, salt, saltlen); | |
f4173af1 | 104 | else if (RAND_bytes(sstr, saltlen) <= 0) |
d3819813 MTL |
105 | goto err; |
106 | ||
107 | if (!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str)) { | |
108 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE); | |
109 | goto err; | |
110 | } | |
3e575651 | 111 | |
d3819813 MTL |
112 | PBEPARAM_free(pbe); |
113 | pbe = NULL; | |
3e575651 | 114 | |
d3819813 MTL |
115 | if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str)) |
116 | return 1; | |
117 | ||
118 | err: | |
031e5cce SM |
119 | if (pbe != NULL) |
120 | PBEPARAM_free(pbe); | |
121 | if (pbe_str != NULL) | |
122 | ASN1_STRING_free(pbe_str); | |
d3819813 MTL |
123 | return 0; |
124 | } | |
125 | ||
126 | /* Return an algorithm identifier for a PKCS#5 PBE algorithm */ | |
127 | ||
128 | X509_ALGOR *PKCS5_pbe_set(int alg, int iter, | |
129 | const unsigned char *salt, int saltlen) | |
130 | { | |
131 | X509_ALGOR *ret; | |
132 | ret = X509_ALGOR_new(); | |
031e5cce | 133 | if (!ret) { |
d3819813 MTL |
134 | ASN1err(ASN1_F_PKCS5_PBE_SET, ERR_R_MALLOC_FAILURE); |
135 | return NULL; | |
136 | } | |
3e575651 | 137 | |
d3819813 MTL |
138 | if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen)) |
139 | return ret; | |
3e575651 | 140 | |
d3819813 MTL |
141 | X509_ALGOR_free(ret); |
142 | return NULL; | |
3e575651 | 143 | } |