1 /*
2 * Copyright 1999-2024 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <stdio.h>
11 #include "internal/cryptlib.h"
12 #include <openssl/core.h>
13 #include <openssl/core_names.h>
14 #include <openssl/pkcs12.h>
15 #include "p12_local.h"
16 #include "crypto/pkcs7/pk7_local.h"
17
18 /* Pack an object into an OCTET STRING and turn into a safebag */
19
PKCS12_item_pack_safebag(void * obj,const ASN1_ITEM * it,int nid1,int nid2)20 PKCS12_SAFEBAG *PKCS12_item_pack_safebag(void *obj, const ASN1_ITEM *it,
21 int nid1, int nid2)
22 {
23 PKCS12_BAGS *bag;
24 PKCS12_SAFEBAG *safebag;
25
26 if ((bag = PKCS12_BAGS_new()) == NULL) {
27 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
28 return NULL;
29 }
30 bag->type = OBJ_nid2obj(nid1);
31 if (!ASN1_item_pack(obj, it, &bag->value.octet)) {
32 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
33 goto err;
34 }
35 if ((safebag = PKCS12_SAFEBAG_new()) == NULL) {
36 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
37 goto err;
38 }
39 safebag->value.bag = bag;
40 safebag->type = OBJ_nid2obj(nid2);
41 return safebag;
42
43 err:
44 PKCS12_BAGS_free(bag);
45 return NULL;
46 }
47
48 /* Turn a stack of SAFEBAGS into a PKCS#7 data Contentinfo */
PKCS12_pack_p7data(STACK_OF (PKCS12_SAFEBAG)* sk)49 PKCS7 *PKCS12_pack_p7data(STACK_OF(PKCS12_SAFEBAG) *sk)
50 {
51 PKCS7 *p7;
52
53 if ((p7 = PKCS7_new()) == NULL) {
54 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
55 return NULL;
56 }
57 p7->type = OBJ_nid2obj(NID_pkcs7_data);
58 if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL) {
59 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
60 goto err;
61 }
62
63 if (!ASN1_item_pack(sk, ASN1_ITEM_rptr(PKCS12_SAFEBAGS), &p7->d.data)) {
64 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CANT_PACK_STRUCTURE);
65 goto err;
66 }
67 return p7;
68
69 err:
70 PKCS7_free(p7);
71 return NULL;
72 }
73
74 /* Unpack SAFEBAGS from PKCS#7 data ContentInfo */
STACK_OF(PKCS12_SAFEBAG)75 STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7data(PKCS7 *p7)
76 {
77 if (!PKCS7_type_is_data(p7)) {
78 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA);
79 return NULL;
80 }
81
82 if (p7->d.data == NULL) {
83 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
84 return NULL;
85 }
86
87 return ASN1_item_unpack_ex(p7->d.data, ASN1_ITEM_rptr(PKCS12_SAFEBAGS),
88 ossl_pkcs7_ctx_get0_libctx(&p7->ctx),
89 ossl_pkcs7_ctx_get0_propq(&p7->ctx));
90 }
91
92 /* Turn a stack of SAFEBAGS into a PKCS#7 encrypted data ContentInfo */
93
PKCS12_pack_p7encdata_ex(int pbe_nid,const char * pass,int passlen,unsigned char * salt,int saltlen,int iter,STACK_OF (PKCS12_SAFEBAG)* bags,OSSL_LIB_CTX * ctx,const char * propq)94 PKCS7 *PKCS12_pack_p7encdata_ex(int pbe_nid, const char *pass, int passlen,
95 unsigned char *salt, int saltlen, int iter,
96 STACK_OF(PKCS12_SAFEBAG) *bags,
97 OSSL_LIB_CTX *ctx, const char *propq)
98 {
99 PKCS7 *p7;
100 X509_ALGOR *pbe;
101 const EVP_CIPHER *pbe_ciph = NULL;
102 EVP_CIPHER *pbe_ciph_fetch = NULL;
103
104 if ((p7 = PKCS7_new_ex(ctx, propq)) == NULL) {
105 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
106 return NULL;
107 }
108 if (!PKCS7_set_type(p7, NID_pkcs7_encrypted)) {
109 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_ERROR_SETTING_ENCRYPTED_DATA_TYPE);
110 goto err;
111 }
112
113 ERR_set_mark();
114 pbe_ciph = pbe_ciph_fetch = EVP_CIPHER_fetch(ctx, OBJ_nid2sn(pbe_nid), propq);
115 if (pbe_ciph == NULL)
116 pbe_ciph = EVP_get_cipherbynid(pbe_nid);
117 ERR_pop_to_mark();
118
119 if (pbe_ciph != NULL) {
120 pbe = PKCS5_pbe2_set_iv_ex(pbe_ciph, iter, salt, saltlen, NULL, -1, ctx);
121 } else {
122 pbe = PKCS5_pbe_set_ex(pbe_nid, iter, salt, saltlen, ctx);
123 }
124
125 if (pbe == NULL) {
126 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
127 goto err;
128 }
129 X509_ALGOR_free(p7->d.encrypted->enc_data->algorithm);
130 p7->d.encrypted->enc_data->algorithm = pbe;
131 ASN1_OCTET_STRING_free(p7->d.encrypted->enc_data->enc_data);
132 if (!(p7->d.encrypted->enc_data->enc_data = PKCS12_item_i2d_encrypt_ex(pbe, ASN1_ITEM_rptr(PKCS12_SAFEBAGS), pass,
133 passlen, bags, 1, ctx, propq))) {
134 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_ENCRYPT_ERROR);
135 goto err;
136 }
137
138 EVP_CIPHER_free(pbe_ciph_fetch);
139 return p7;
140
141 err:
142 PKCS7_free(p7);
143 EVP_CIPHER_free(pbe_ciph_fetch);
144 return NULL;
145 }
146
PKCS12_pack_p7encdata(int pbe_nid,const char * pass,int passlen,unsigned char * salt,int saltlen,int iter,STACK_OF (PKCS12_SAFEBAG)* bags)147 PKCS7 *PKCS12_pack_p7encdata(int pbe_nid, const char *pass, int passlen,
148 unsigned char *salt, int saltlen, int iter,
149 STACK_OF(PKCS12_SAFEBAG) *bags)
150 {
151 return PKCS12_pack_p7encdata_ex(pbe_nid, pass, passlen, salt, saltlen,
152 iter, bags, NULL, NULL);
153 }
154
STACK_OF(PKCS12_SAFEBAG)155 STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7encdata(PKCS7 *p7, const char *pass,
156 int passlen)
157 {
158 if (!PKCS7_type_is_encrypted(p7))
159 return NULL;
160
161 if (p7->d.encrypted == NULL) {
162 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
163 return NULL;
164 }
165
166 return PKCS12_item_decrypt_d2i_ex(p7->d.encrypted->enc_data->algorithm,
167 ASN1_ITEM_rptr(PKCS12_SAFEBAGS),
168 pass, passlen,
169 p7->d.encrypted->enc_data->enc_data, 1,
170 p7->ctx.libctx, p7->ctx.propq);
171 }
172
PKCS12_decrypt_skey_ex(const PKCS12_SAFEBAG * bag,const char * pass,int passlen,OSSL_LIB_CTX * ctx,const char * propq)173 PKCS8_PRIV_KEY_INFO *PKCS12_decrypt_skey_ex(const PKCS12_SAFEBAG *bag,
174 const char *pass, int passlen,
175 OSSL_LIB_CTX *ctx, const char *propq)
176 {
177 return PKCS8_decrypt_ex(bag->value.shkeybag, pass, passlen, ctx, propq);
178 }
179
PKCS12_decrypt_skey(const PKCS12_SAFEBAG * bag,const char * pass,int passlen)180 PKCS8_PRIV_KEY_INFO *PKCS12_decrypt_skey(const PKCS12_SAFEBAG *bag,
181 const char *pass, int passlen)
182 {
183 return PKCS12_decrypt_skey_ex(bag, pass, passlen, NULL, NULL);
184 }
185
PKCS12_pack_authsafes(PKCS12 * p12,STACK_OF (PKCS7)* safes)186 int PKCS12_pack_authsafes(PKCS12 *p12, STACK_OF(PKCS7) *safes)
187 {
188 if (ASN1_item_pack(safes, ASN1_ITEM_rptr(PKCS12_AUTHSAFES),
189 &p12->authsafes->d.data))
190 return 1;
191 return 0;
192 }
193
STACK_OF(PKCS7)194 STACK_OF(PKCS7) *PKCS12_unpack_authsafes(const PKCS12 *p12)
195 {
196 STACK_OF(PKCS7) *p7s;
197 PKCS7_CTX *p7ctx;
198 PKCS7 *p7;
199 int i;
200
201 if (!PKCS7_type_is_data(p12->authsafes)) {
202 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA);
203 return NULL;
204 }
205
206 if (p12->authsafes->d.data == NULL) {
207 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
208 return NULL;
209 }
210
211 p7ctx = &p12->authsafes->ctx;
212 p7s = ASN1_item_unpack_ex(p12->authsafes->d.data,
213 ASN1_ITEM_rptr(PKCS12_AUTHSAFES),
214 ossl_pkcs7_ctx_get0_libctx(p7ctx),
215 ossl_pkcs7_ctx_get0_propq(p7ctx));
216 if (p7s != NULL) {
217 for (i = 0; i < sk_PKCS7_num(p7s); i++) {
218 p7 = sk_PKCS7_value(p7s, i);
219 if (!ossl_pkcs7_ctx_propagate(p12->authsafes, p7))
220 goto err;
221 }
222 }
223 return p7s;
224 err:
225 sk_PKCS7_free(p7s);
226 return NULL;
227 }
228