xref: /openssl/crypto/pkcs12/p12_add.c (revision b6461792)
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 =
133           PKCS12_item_i2d_encrypt_ex(pbe, ASN1_ITEM_rptr(PKCS12_SAFEBAGS), pass,
134                                      passlen, bags, 1, ctx, propq))) {
135         ERR_raise(ERR_LIB_PKCS12, PKCS12_R_ENCRYPT_ERROR);
136         goto err;
137     }
138 
139     EVP_CIPHER_free(pbe_ciph_fetch);
140     return p7;
141 
142  err:
143     PKCS7_free(p7);
144     EVP_CIPHER_free(pbe_ciph_fetch);
145     return NULL;
146 }
147 
PKCS12_pack_p7encdata(int pbe_nid,const char * pass,int passlen,unsigned char * salt,int saltlen,int iter,STACK_OF (PKCS12_SAFEBAG)* bags)148 PKCS7 *PKCS12_pack_p7encdata(int pbe_nid, const char *pass, int passlen,
149                              unsigned char *salt, int saltlen, int iter,
150                              STACK_OF(PKCS12_SAFEBAG) *bags)
151 {
152     return PKCS12_pack_p7encdata_ex(pbe_nid, pass, passlen, salt, saltlen,
153                                     iter, bags, NULL, NULL);
154 }
155 
STACK_OF(PKCS12_SAFEBAG)156 STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7encdata(PKCS7 *p7, const char *pass,
157                                                   int passlen)
158 {
159     if (!PKCS7_type_is_encrypted(p7))
160         return NULL;
161 
162     if (p7->d.encrypted == NULL) {
163         ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
164         return NULL;
165     }
166 
167     return PKCS12_item_decrypt_d2i_ex(p7->d.encrypted->enc_data->algorithm,
168                                    ASN1_ITEM_rptr(PKCS12_SAFEBAGS),
169                                    pass, passlen,
170                                    p7->d.encrypted->enc_data->enc_data, 1,
171                                    p7->ctx.libctx, p7->ctx.propq);
172 }
173 
PKCS12_decrypt_skey_ex(const PKCS12_SAFEBAG * bag,const char * pass,int passlen,OSSL_LIB_CTX * ctx,const char * propq)174 PKCS8_PRIV_KEY_INFO *PKCS12_decrypt_skey_ex(const PKCS12_SAFEBAG *bag,
175                                             const char *pass, int passlen,
176                                             OSSL_LIB_CTX *ctx, const char *propq)
177 {
178     return PKCS8_decrypt_ex(bag->value.shkeybag, pass, passlen, ctx, propq);
179 }
180 
PKCS12_decrypt_skey(const PKCS12_SAFEBAG * bag,const char * pass,int passlen)181 PKCS8_PRIV_KEY_INFO *PKCS12_decrypt_skey(const PKCS12_SAFEBAG *bag,
182                                          const char *pass, int passlen)
183 {
184     return PKCS12_decrypt_skey_ex(bag, pass, passlen, NULL, NULL);
185 }
186 
PKCS12_pack_authsafes(PKCS12 * p12,STACK_OF (PKCS7)* safes)187 int PKCS12_pack_authsafes(PKCS12 *p12, STACK_OF(PKCS7) *safes)
188 {
189     if (ASN1_item_pack(safes, ASN1_ITEM_rptr(PKCS12_AUTHSAFES),
190                        &p12->authsafes->d.data))
191         return 1;
192     return 0;
193 }
194 
STACK_OF(PKCS7)195 STACK_OF(PKCS7) *PKCS12_unpack_authsafes(const PKCS12 *p12)
196 {
197     STACK_OF(PKCS7) *p7s;
198     PKCS7_CTX *p7ctx;
199     PKCS7 *p7;
200     int i;
201 
202     if (!PKCS7_type_is_data(p12->authsafes)) {
203         ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA);
204         return NULL;
205     }
206 
207     if (p12->authsafes->d.data == NULL) {
208         ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
209         return NULL;
210     }
211 
212     p7ctx = &p12->authsafes->ctx;
213     p7s = ASN1_item_unpack_ex(p12->authsafes->d.data,
214                               ASN1_ITEM_rptr(PKCS12_AUTHSAFES),
215                               ossl_pkcs7_ctx_get0_libctx(p7ctx),
216                               ossl_pkcs7_ctx_get0_propq(p7ctx));
217     if (p7s != NULL) {
218         for (i = 0; i < sk_PKCS7_num(p7s); i++) {
219             p7 = sk_PKCS7_value(p7s, i);
220             if (!ossl_pkcs7_ctx_propagate(p12->authsafes, p7))
221                 goto err;
222         }
223     }
224     return p7s;
225 err:
226     sk_PKCS7_free(p7s);
227     return NULL;
228 }
229