xref: /openbsd-src/lib/libcrypto/pkcs12/p12_add.c (revision 50b7afb2c2c0993b0894d4e34bf857cb13ed9c80)
1 /* $OpenBSD: p12_add.c,v 1.11 2014/07/11 08:44:49 jsing 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:
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 
61 #include <openssl/err.h>
62 #include <openssl/pkcs12.h>
63 
64 /* Pack an object into an OCTET STRING and turn into a safebag */
65 
66 PKCS12_SAFEBAG *
67 PKCS12_item_pack_safebag(void *obj, const ASN1_ITEM *it, int nid1, int nid2)
68 {
69 	PKCS12_BAGS *bag;
70 	PKCS12_SAFEBAG *safebag;
71 
72 	if (!(bag = PKCS12_BAGS_new())) {
73 		PKCS12err(PKCS12_F_PKCS12_ITEM_PACK_SAFEBAG,
74 		    ERR_R_MALLOC_FAILURE);
75 		return NULL;
76 	}
77 	bag->type = OBJ_nid2obj(nid1);
78 	if (!ASN1_item_pack(obj, it, &bag->value.octet)) {
79 		PKCS12err(PKCS12_F_PKCS12_ITEM_PACK_SAFEBAG,
80 		    ERR_R_MALLOC_FAILURE);
81 		return NULL;
82 	}
83 	if (!(safebag = PKCS12_SAFEBAG_new())) {
84 		PKCS12err(PKCS12_F_PKCS12_ITEM_PACK_SAFEBAG,
85 		    ERR_R_MALLOC_FAILURE);
86 		return NULL;
87 	}
88 	safebag->value.bag = bag;
89 	safebag->type = OBJ_nid2obj(nid2);
90 	return safebag;
91 }
92 
93 /* Turn PKCS8 object into a keybag */
94 
95 PKCS12_SAFEBAG *
96 PKCS12_MAKE_KEYBAG(PKCS8_PRIV_KEY_INFO *p8)
97 {
98 	PKCS12_SAFEBAG *bag;
99 
100 	if (!(bag = PKCS12_SAFEBAG_new())) {
101 		PKCS12err(PKCS12_F_PKCS12_MAKE_KEYBAG, ERR_R_MALLOC_FAILURE);
102 		return NULL;
103 	}
104 	bag->type = OBJ_nid2obj(NID_keyBag);
105 	bag->value.keybag = p8;
106 	return bag;
107 }
108 
109 /* Turn PKCS8 object into a shrouded keybag */
110 
111 PKCS12_SAFEBAG *
112 PKCS12_MAKE_SHKEYBAG(int pbe_nid, const char *pass, int passlen,
113     unsigned char *salt, int saltlen, int iter, PKCS8_PRIV_KEY_INFO *p8)
114 {
115 	PKCS12_SAFEBAG *bag;
116 	const EVP_CIPHER *pbe_ciph;
117 
118 	/* Set up the safe bag */
119 	if (!(bag = PKCS12_SAFEBAG_new())) {
120 		PKCS12err(PKCS12_F_PKCS12_MAKE_SHKEYBAG, ERR_R_MALLOC_FAILURE);
121 		return NULL;
122 	}
123 
124 	bag->type = OBJ_nid2obj(NID_pkcs8ShroudedKeyBag);
125 
126 	pbe_ciph = EVP_get_cipherbynid(pbe_nid);
127 
128 	if (pbe_ciph)
129 		pbe_nid = -1;
130 
131 	if (!(bag->value.shkeybag = PKCS8_encrypt(pbe_nid, pbe_ciph, pass,
132 	    passlen, salt, saltlen, iter, p8))) {
133 		PKCS12err(PKCS12_F_PKCS12_MAKE_SHKEYBAG, ERR_R_MALLOC_FAILURE);
134 		return NULL;
135 	}
136 
137 	return bag;
138 }
139 
140 /* Turn a stack of SAFEBAGS into a PKCS#7 data Contentinfo */
141 PKCS7 *
142 PKCS12_pack_p7data(STACK_OF(PKCS12_SAFEBAG) *sk)
143 {
144 	PKCS7 *p7;
145 
146 	if (!(p7 = PKCS7_new())) {
147 		PKCS12err(PKCS12_F_PKCS12_PACK_P7DATA, ERR_R_MALLOC_FAILURE);
148 		return NULL;
149 	}
150 	p7->type = OBJ_nid2obj(NID_pkcs7_data);
151 	if (!(p7->d.data = M_ASN1_OCTET_STRING_new())) {
152 		PKCS12err(PKCS12_F_PKCS12_PACK_P7DATA, ERR_R_MALLOC_FAILURE);
153 		return NULL;
154 	}
155 
156 	if (!ASN1_item_pack(sk, ASN1_ITEM_rptr(PKCS12_SAFEBAGS), &p7->d.data)) {
157 		PKCS12err(PKCS12_F_PKCS12_PACK_P7DATA,
158 		    PKCS12_R_CANT_PACK_STRUCTURE);
159 		return NULL;
160 	}
161 	return p7;
162 }
163 
164 /* Unpack SAFEBAGS from PKCS#7 data ContentInfo */
165 STACK_OF(PKCS12_SAFEBAG) *
166 PKCS12_unpack_p7data(PKCS7 *p7)
167 {
168 	if (!PKCS7_type_is_data(p7)) {
169 		PKCS12err(PKCS12_F_PKCS12_UNPACK_P7DATA,
170 		    PKCS12_R_CONTENT_TYPE_NOT_DATA);
171 		return NULL;
172 	}
173 	return ASN1_item_unpack(p7->d.data, ASN1_ITEM_rptr(PKCS12_SAFEBAGS));
174 }
175 
176 /* Turn a stack of SAFEBAGS into a PKCS#7 encrypted data ContentInfo */
177 
178 PKCS7 *
179 PKCS12_pack_p7encdata(int pbe_nid, const char *pass, int passlen,
180     unsigned char *salt, int saltlen, int iter, STACK_OF(PKCS12_SAFEBAG) *bags)
181 {
182 	PKCS7 *p7;
183 	X509_ALGOR *pbe;
184 	const EVP_CIPHER *pbe_ciph;
185 
186 	if (!(p7 = PKCS7_new())) {
187 		PKCS12err(PKCS12_F_PKCS12_PACK_P7ENCDATA, ERR_R_MALLOC_FAILURE);
188 		return NULL;
189 	}
190 	if (!PKCS7_set_type(p7, NID_pkcs7_encrypted)) {
191 		PKCS12err(PKCS12_F_PKCS12_PACK_P7ENCDATA,
192 		    PKCS12_R_ERROR_SETTING_ENCRYPTED_DATA_TYPE);
193 		return NULL;
194 	}
195 
196 	pbe_ciph = EVP_get_cipherbynid(pbe_nid);
197 
198 	if (pbe_ciph)
199 		pbe = PKCS5_pbe2_set(pbe_ciph, iter, salt, saltlen);
200 	else
201 		pbe = PKCS5_pbe_set(pbe_nid, iter, salt, saltlen);
202 
203 	if (!pbe) {
204 		PKCS12err(PKCS12_F_PKCS12_PACK_P7ENCDATA, ERR_R_MALLOC_FAILURE);
205 		return NULL;
206 	}
207 	X509_ALGOR_free(p7->d.encrypted->enc_data->algorithm);
208 	p7->d.encrypted->enc_data->algorithm = pbe;
209 	M_ASN1_OCTET_STRING_free(p7->d.encrypted->enc_data->enc_data);
210 	if (!(p7->d.encrypted->enc_data->enc_data = PKCS12_item_i2d_encrypt(
211 	    pbe, ASN1_ITEM_rptr(PKCS12_SAFEBAGS), pass, passlen, bags, 1))) {
212 		PKCS12err(PKCS12_F_PKCS12_PACK_P7ENCDATA,
213 		    PKCS12_R_ENCRYPT_ERROR);
214 		return NULL;
215 	}
216 
217 	return p7;
218 }
219 
220 STACK_OF(PKCS12_SAFEBAG) *
221 PKCS12_unpack_p7encdata(PKCS7 *p7, const char *pass, int passlen)
222 {
223 	if (!PKCS7_type_is_encrypted(p7))
224 		return NULL;
225 	return PKCS12_item_decrypt_d2i(p7->d.encrypted->enc_data->algorithm,
226 	    ASN1_ITEM_rptr(PKCS12_SAFEBAGS), pass, passlen,
227 	    p7->d.encrypted->enc_data->enc_data, 1);
228 }
229 
230 PKCS8_PRIV_KEY_INFO *
231 PKCS12_decrypt_skey(PKCS12_SAFEBAG *bag, const char *pass, int passlen)
232 {
233 	return PKCS8_decrypt(bag->value.shkeybag, pass, passlen);
234 }
235 
236 int
237 PKCS12_pack_authsafes(PKCS12 *p12, STACK_OF(PKCS7) *safes)
238 {
239 	if (ASN1_item_pack(safes, ASN1_ITEM_rptr(PKCS12_AUTHSAFES),
240 	    &p12->authsafes->d.data))
241 		return 1;
242 	return 0;
243 }
244 
245 STACK_OF(PKCS7) *
246 PKCS12_unpack_authsafes(PKCS12 *p12)
247 {
248 	if (!PKCS7_type_is_data(p12->authsafes)) {
249 		PKCS12err(PKCS12_F_PKCS12_UNPACK_AUTHSAFES,
250 		    PKCS12_R_CONTENT_TYPE_NOT_DATA);
251 		return NULL;
252 	}
253 	return ASN1_item_unpack(p12->authsafes->d.data,
254 	    ASN1_ITEM_rptr(PKCS12_AUTHSAFES));
255 }
256