1 /* p12_npas.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 <stdlib.h>
61 #include <string.h>
62 #include <openssl/pem.h>
63 #include <openssl/err.h>
64 #include <openssl/pkcs12.h>
65
66 /* PKCS#12 password change routine */
67
68 static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass);
69 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass,
70 char *newpass);
71 static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass);
72 static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen);
73
74 /*
75 * Change the password on a PKCS#12 structure.
76 */
77
78 int PKCS12_newpass(PKCS12 *p12, char *oldpass, char *newpass)
79 {
80 /* Check for NULL PKCS12 structure */
81
82 if(!p12) {
83 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_INVALID_NULL_PKCS12_POINTER);
84 return 0;
85 }
86
87 /* Check the mac */
88
89 if (!PKCS12_verify_mac(p12, oldpass, -1)) {
90 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_MAC_VERIFY_FAILURE);
91 return 0;
92 }
93
94 if (!newpass_p12(p12, oldpass, newpass)) {
95 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_PARSE_ERROR);
96 return 0;
97 }
98
99 return 1;
100 }
101
102 /* Parse the outer PKCS#12 structure */
103
104 static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass)
105 {
106 STACK_OF(PKCS7) *asafes, *newsafes;
107 STACK_OF(PKCS12_SAFEBAG) *bags;
108 int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0;
109 PKCS7 *p7, *p7new;
110 ASN1_OCTET_STRING *p12_data_tmp = NULL, *macnew = NULL;
111 unsigned char mac[EVP_MAX_MD_SIZE];
112 unsigned int maclen;
113
114 if (!(asafes = PKCS12_unpack_authsafes(p12))) return 0;
115 if(!(newsafes = sk_PKCS7_new_null())) return 0;
116 for (i = 0; i < sk_PKCS7_num (asafes); i++) {
117 p7 = sk_PKCS7_value(asafes, i);
118 bagnid = OBJ_obj2nid(p7->type);
119 if (bagnid == NID_pkcs7_data) {
120 bags = PKCS12_unpack_p7data(p7);
121 } else if (bagnid == NID_pkcs7_encrypted) {
122 bags = PKCS12_unpack_p7encdata(p7, oldpass, -1);
123 if (!alg_get(p7->d.encrypted->enc_data->algorithm,
124 &pbe_nid, &pbe_iter, &pbe_saltlen))
125 {
126 sk_PKCS12_SAFEBAG_pop_free(bags,
127 PKCS12_SAFEBAG_free);
128 bags = NULL;
129 }
130 } else continue;
131 if (!bags) {
132 sk_PKCS7_pop_free(asafes, PKCS7_free);
133 return 0;
134 }
135 if (!newpass_bags(bags, oldpass, newpass)) {
136 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
137 sk_PKCS7_pop_free(asafes, PKCS7_free);
138 return 0;
139 }
140 /* Repack bag in same form with new password */
141 if (bagnid == NID_pkcs7_data) p7new = PKCS12_pack_p7data(bags);
142 else p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, NULL,
143 pbe_saltlen, pbe_iter, bags);
144 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
145 if(!p7new) {
146 sk_PKCS7_pop_free(asafes, PKCS7_free);
147 return 0;
148 }
149 sk_PKCS7_push(newsafes, p7new);
150 }
151 sk_PKCS7_pop_free(asafes, PKCS7_free);
152
153 /* Repack safe: save old safe in case of error */
154
155 p12_data_tmp = p12->authsafes->d.data;
156 if(!(p12->authsafes->d.data = ASN1_OCTET_STRING_new())) goto saferr;
157 if(!PKCS12_pack_authsafes(p12, newsafes)) goto saferr;
158
159 if(!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen)) goto saferr;
160 if(!(macnew = ASN1_OCTET_STRING_new())) goto saferr;
161 if(!ASN1_OCTET_STRING_set(macnew, mac, maclen)) goto saferr;
162 ASN1_OCTET_STRING_free(p12->mac->dinfo->digest);
163 p12->mac->dinfo->digest = macnew;
164 ASN1_OCTET_STRING_free(p12_data_tmp);
165
166 return 1;
167
168 saferr:
169 /* Restore old safe */
170 ASN1_OCTET_STRING_free(p12->authsafes->d.data);
171 ASN1_OCTET_STRING_free(macnew);
172 p12->authsafes->d.data = p12_data_tmp;
173 return 0;
174
175 }
176
177
178 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass,
179 char *newpass)
180 {
181 int i;
182 for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {
183 if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i),
184 oldpass, newpass))
185 return 0;
186 }
187 return 1;
188 }
189
190 /* Change password of safebag: only needs handle shrouded keybags */
191
192 static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass)
193 {
194 PKCS8_PRIV_KEY_INFO *p8;
195 X509_SIG *p8new;
196 int p8_nid, p8_saltlen, p8_iter;
197
198 if(M_PKCS12_bag_type(bag) != NID_pkcs8ShroudedKeyBag) return 1;
199
200 if (!(p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1))) return 0;
201 if (!alg_get(bag->value.shkeybag->algor, &p8_nid, &p8_iter,
202 &p8_saltlen))
203 return 0;
204 if(!(p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen,
205 p8_iter, p8))) return 0;
206 X509_SIG_free(bag->value.shkeybag);
207 bag->value.shkeybag = p8new;
208 return 1;
209 }
210
211 static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen)
212 {
213 PBEPARAM *pbe;
214 const unsigned char *p;
215
216 p = alg->parameter->value.sequence->data;
217 pbe = d2i_PBEPARAM(NULL, &p, alg->parameter->value.sequence->length);
218 if (!pbe)
219 return 0;
220 *pnid = OBJ_obj2nid(alg->algorithm);
221 *piter = ASN1_INTEGER_get(pbe->iter);
222 *psaltlen = pbe->salt->length;
223 PBEPARAM_free(pbe);
224 return 1;
225 }