1 /* $OpenBSD: p12_npas.c,v 1.13 2018/05/13 14:22:34 tb Exp $ */
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:
wb_lookupsid_send(TALLOC_CTX * mem_ctx,struct tevent_context * ev,const struct dom_sid * sid)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, const char *oldpass, const char *newpass);
wb_lookupsid_done(struct tevent_req * subreq)69 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass,
70 const char *newpass);
71 static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass,
72 const char *newpass);
73 static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen);
74
75 /*
76 * Change the password on a PKCS#12 structure.
77 */
78
79 int
80 PKCS12_newpass(PKCS12 *p12, const char *oldpass, const char *newpass)
81 {
82 /* Check for NULL PKCS12 structure */
83
84 if (!p12) {
85 PKCS12error(PKCS12_R_INVALID_NULL_PKCS12_POINTER);
wb_lookupsid_recv(struct tevent_req * req,TALLOC_CTX * mem_ctx,enum lsa_SidType * type,const char ** domain,const char ** name)86 return 0;
87 }
88
89 /* Check the mac */
90
91 if (!PKCS12_verify_mac(p12, oldpass, -1)) {
92 PKCS12error(PKCS12_R_MAC_VERIFY_FAILURE);
93 return 0;
94 }
95
96 if (!newpass_p12(p12, oldpass, newpass)) {
97 PKCS12error(PKCS12_R_PARSE_ERROR);
98 return 0;
99 }
100
101 return 1;
102 }
103
104 /* Parse the outer PKCS#12 structure */
105
106 static int
107 newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass)
108 {
109 STACK_OF(PKCS7) *asafes, *newsafes;
110 STACK_OF(PKCS12_SAFEBAG) *bags;
111 int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0;
112 PKCS7 *p7, *p7new;
113 ASN1_OCTET_STRING *p12_data_tmp = NULL, *macnew = NULL;
114 unsigned char mac[EVP_MAX_MD_SIZE];
115 unsigned int maclen;
116
117 if (!(asafes = PKCS12_unpack_authsafes(p12)))
118 return 0;
119 if (!(newsafes = sk_PKCS7_new_null()))
120 return 0;
121 for (i = 0; i < sk_PKCS7_num(asafes); i++) {
122 p7 = sk_PKCS7_value(asafes, i);
123 bagnid = OBJ_obj2nid(p7->type);
124 if (bagnid == NID_pkcs7_data) {
125 bags = PKCS12_unpack_p7data(p7);
126 } else if (bagnid == NID_pkcs7_encrypted) {
127 bags = PKCS12_unpack_p7encdata(p7, oldpass, -1);
128 if (!alg_get(p7->d.encrypted->enc_data->algorithm,
129 &pbe_nid, &pbe_iter, &pbe_saltlen)) {
130 sk_PKCS12_SAFEBAG_pop_free(bags,
131 PKCS12_SAFEBAG_free);
132 bags = NULL;
133 }
134 } else
135 continue;
136 if (bags == NULL)
137 goto err;
138 if (!newpass_bags(bags, oldpass, newpass)) {
139 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
140 goto err;
141 }
142 /* Repack bag in same form with new password */
143 if (bagnid == NID_pkcs7_data)
144 p7new = PKCS12_pack_p7data(bags);
145 else
146 p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1,
147 NULL, pbe_saltlen, pbe_iter, bags);
148 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
149 if (p7new == NULL)
150 goto err;
151 if (sk_PKCS7_push(newsafes, p7new) == 0)
152 goto err;
153 }
154 sk_PKCS7_pop_free(asafes, PKCS7_free);
155
156 /* Repack safe: save old safe in case of error */
157
158 p12_data_tmp = p12->authsafes->d.data;
159 if (!(p12->authsafes->d.data = ASN1_OCTET_STRING_new())) {
160 p12->authsafes->d.data = p12_data_tmp;
161 goto err;
162 }
163 if (!PKCS12_pack_authsafes(p12, newsafes))
164 goto saferr;
165
166 if (!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen))
167 goto saferr;
168 if (!(macnew = ASN1_OCTET_STRING_new()))
169 goto saferr;
170 if (!ASN1_OCTET_STRING_set(macnew, mac, maclen))
171 goto saferr;
172 ASN1_OCTET_STRING_free(p12->mac->dinfo->digest);
173 p12->mac->dinfo->digest = macnew;
174 ASN1_OCTET_STRING_free(p12_data_tmp);
175
176 return 1;
177
178 saferr:
179 /* Restore old safe */
180 ASN1_OCTET_STRING_free(p12->authsafes->d.data);
181 ASN1_OCTET_STRING_free(macnew);
182 p12->authsafes->d.data = p12_data_tmp;
183 return 0;
184
185 err:
186 sk_PKCS7_pop_free(asafes, PKCS7_free);
187 sk_PKCS7_pop_free(newsafes, PKCS7_free);
188 return 0;
189 }
190
191
192 static int
193 newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass,
194 const char *newpass)
195 {
196 int i;
197
198 for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {
199 if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i),
200 oldpass, newpass))
201 return 0;
202 }
203 return 1;
204 }
205
206 /* Change password of safebag: only needs handle shrouded keybags */
207
208 static int
209 newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass, const char *newpass)
210 {
211 PKCS8_PRIV_KEY_INFO *p8;
212 X509_SIG *p8new;
213 int p8_nid, p8_saltlen, p8_iter;
214
215 if (OBJ_obj2nid(bag->type) != NID_pkcs8ShroudedKeyBag)
216 return 1;
217
218 if (!(p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1)))
219 return 0;
220 if (!alg_get(bag->value.shkeybag->algor, &p8_nid, &p8_iter,
221 &p8_saltlen))
222 return 0;
223 if (!(p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen,
224 p8_iter, p8))) return 0;
225 X509_SIG_free(bag->value.shkeybag);
226 bag->value.shkeybag = p8new;
227 return 1;
228 }
229
230 static int
231 alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen)
232 {
233 PBEPARAM *pbe;
234 const unsigned char *p;
235
236 p = alg->parameter->value.sequence->data;
237 pbe = d2i_PBEPARAM(NULL, &p, alg->parameter->value.sequence->length);
238 if (!pbe)
239 return 0;
240 *pnid = OBJ_obj2nid(alg->algorithm);
241 *piter = ASN1_INTEGER_get(pbe->iter);
242 *psaltlen = pbe->salt->length;
243 PBEPARAM_free(pbe);
244 return 1;
245 }
246