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Commit | Line | Data |
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cfcefcbe DSH |
1 | /* p5_pbe.c */ |
2 | /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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" | |
9d6b1ce6 | 61 | #include <openssl/asn1t.h> |
f0e8ae72 | 62 | #include <openssl/x509.h> |
ec577822 | 63 | #include <openssl/rand.h> |
cfcefcbe DSH |
64 | |
65 | /* PKCS#5 password based encryption structure */ | |
66 | ||
9d6b1ce6 DSH |
67 | ASN1_SEQUENCE(PBEPARAM) = { |
68 | ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING), | |
69 | ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER) | |
d339187b | 70 | } ASN1_SEQUENCE_END(PBEPARAM) |
cfcefcbe | 71 | |
9d6b1ce6 | 72 | IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM) |
8d8c7266 | 73 | |
8d8c7266 | 74 | |
8931b30d DSH |
75 | /* Set an algorithm identifier for a PKCS#5 PBE algorithm */ |
76 | ||
77 | int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter, | |
78 | const unsigned char *salt, int saltlen) | |
79 | { | |
a0e7c8ee | 80 | PBEPARAM *pbe=NULL; |
8931b30d DSH |
81 | ASN1_STRING *pbe_str=NULL; |
82 | unsigned char *sstr; | |
8d8c7266 | 83 | |
8931b30d DSH |
84 | pbe = PBEPARAM_new(); |
85 | if (!pbe) | |
86 | { | |
87 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE); | |
a0e7c8ee | 88 | goto err; |
8931b30d DSH |
89 | } |
90 | if(iter <= 0) | |
91 | iter = PKCS5_DEFAULT_ITER; | |
92 | if (!ASN1_INTEGER_set(pbe->iter, iter)) | |
93 | { | |
94 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE); | |
a0e7c8ee | 95 | goto err; |
8931b30d DSH |
96 | } |
97 | if (!saltlen) | |
98 | saltlen = PKCS5_SALT_LEN; | |
99 | if (!ASN1_STRING_set(pbe->salt, NULL, saltlen)) | |
100 | { | |
101 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE); | |
a0e7c8ee | 102 | goto err; |
8931b30d DSH |
103 | } |
104 | sstr = ASN1_STRING_data(pbe->salt); | |
105 | if (salt) | |
106 | memcpy(sstr, salt, saltlen); | |
107 | else if (RAND_pseudo_bytes(sstr, saltlen) < 0) | |
a0e7c8ee | 108 | goto err; |
8d8c7266 | 109 | |
8931b30d DSH |
110 | if(!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str)) |
111 | { | |
112 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE); | |
a0e7c8ee | 113 | goto err; |
8931b30d | 114 | } |
8d8c7266 | 115 | |
8931b30d | 116 | PBEPARAM_free(pbe); |
a0e7c8ee | 117 | pbe = NULL; |
8d8c7266 | 118 | |
8931b30d DSH |
119 | if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str)) |
120 | return 1; | |
121 | ||
a0e7c8ee | 122 | err: |
8931b30d DSH |
123 | if (pbe != NULL) |
124 | PBEPARAM_free(pbe); | |
125 | if (pbe_str != NULL) | |
126 | ASN1_STRING_free(pbe_str); | |
127 | return 0; | |
128 | } | |
129 | ||
130 | /* Return an algorithm identifier for a PKCS#5 PBE algorithm */ | |
131 | ||
132 | X509_ALGOR *PKCS5_pbe_set(int alg, int iter, | |
133 | const unsigned char *salt, int saltlen) | |
134 | { | |
135 | X509_ALGOR *ret; | |
136 | ret = X509_ALGOR_new(); | |
137 | if (!ret) | |
138 | { | |
139 | ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE); | |
140 | return NULL; | |
141 | } | |
142 | ||
143 | if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen)) | |
144 | return ret; | |
145 | ||
146 | X509_ALGOR_free(ret); | |
a0e7c8ee | 147 | return NULL; |
8931b30d | 148 | } |