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0f113f3e | 1 | /* |
4333b89f | 2 | * Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved. |
9d6b1ce6 | 3 | * |
b7617a3a | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
62867571 RS |
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 | |
9d6b1ce6 DSH |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
b39fc560 | 11 | #include "internal/cryptlib.h" |
9d6b1ce6 DSH |
12 | #include <openssl/asn1t.h> |
13 | #include <openssl/pkcs7.h> | |
d66ace9d | 14 | #include <openssl/x509.h> |
90a1f2d7 | 15 | #include "pk7_local.h" |
9d6b1ce6 DSH |
16 | |
17 | /* PKCS#7 ASN1 module */ | |
18 | ||
19 | /* This is the ANY DEFINED BY table for the top level PKCS#7 structure */ | |
20 | ||
21 | ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0); | |
22 | ||
23 | ASN1_ADB(PKCS7) = { | |
0f113f3e MC |
24 | ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)), |
25 | ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)), | |
26 | ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)), | |
27 | ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)), | |
28 | ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)), | |
29 | ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0)) | |
9d6b1ce6 DSH |
30 | } ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL); |
31 | ||
8931b30d DSH |
32 | /* PKCS#7 streaming support */ |
33 | static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, | |
0f113f3e | 34 | void *exarg) |
8931b30d | 35 | { |
0f113f3e MC |
36 | ASN1_STREAM_ARG *sarg = exarg; |
37 | PKCS7 **pp7 = (PKCS7 **)pval; | |
38 | ||
39 | switch (operation) { | |
40 | ||
41 | case ASN1_OP_STREAM_PRE: | |
42 | if (PKCS7_stream(&sarg->boundary, *pp7) <= 0) | |
43 | return 0; | |
018fcbec | 44 | /* fall thru */ |
0f113f3e MC |
45 | case ASN1_OP_DETACHED_PRE: |
46 | sarg->ndef_bio = PKCS7_dataInit(*pp7, sarg->out); | |
47 | if (!sarg->ndef_bio) | |
48 | return 0; | |
49 | break; | |
50 | ||
51 | case ASN1_OP_STREAM_POST: | |
52 | case ASN1_OP_DETACHED_POST: | |
53 | if (PKCS7_dataFinal(*pp7, sarg->ndef_bio) <= 0) | |
54 | return 0; | |
55 | break; | |
56 | ||
57 | } | |
58 | return 1; | |
8931b30d DSH |
59 | } |
60 | ||
61 | ASN1_NDEF_SEQUENCE_cb(PKCS7, pk7_cb) = { | |
0f113f3e MC |
62 | ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT), |
63 | ASN1_ADB_OBJECT(PKCS7) | |
8931b30d | 64 | }ASN1_NDEF_SEQUENCE_END_cb(PKCS7, PKCS7) |
9d6b1ce6 | 65 | |
90a1f2d7 SL |
66 | PKCS7 *d2i_PKCS7(PKCS7 **a, const unsigned char **in, long len) |
67 | { | |
68 | PKCS7 *ret; | |
dea2878f MC |
69 | OSSL_LIB_CTX *libctx = NULL; |
70 | const char *propq = NULL; | |
90a1f2d7 | 71 | |
dea2878f MC |
72 | if (a != NULL && *a != NULL) { |
73 | libctx = (*a)->ctx.libctx; | |
74 | propq = (*a)->ctx.propq; | |
75 | } | |
76 | ||
77 | ret = (PKCS7 *)ASN1_item_d2i_ex((ASN1_VALUE **)a, in, len, (PKCS7_it()), | |
78 | libctx, propq); | |
038f4dc6 | 79 | if (ret != NULL) |
681618cf | 80 | ossl_pkcs7_resolve_libctx(ret); |
90a1f2d7 SL |
81 | return ret; |
82 | } | |
83 | ||
84 | int i2d_PKCS7(const PKCS7 *a, unsigned char **out) | |
85 | { | |
86 | return ASN1_item_i2d((const ASN1_VALUE *)a, out, (PKCS7_it()));\ | |
87 | } | |
88 | ||
89 | PKCS7 *PKCS7_new(void) | |
90 | { | |
91 | return (PKCS7 *)ASN1_item_new(ASN1_ITEM_rptr(PKCS7)); | |
92 | } | |
93 | ||
b4250010 | 94 | PKCS7 *PKCS7_new_ex(OSSL_LIB_CTX *libctx, const char *propq) |
90a1f2d7 | 95 | { |
dea2878f MC |
96 | PKCS7 *pkcs7 = (PKCS7 *)ASN1_item_new_ex(ASN1_ITEM_rptr(PKCS7), libctx, |
97 | propq); | |
90a1f2d7 SL |
98 | |
99 | if (pkcs7 != NULL) { | |
100 | pkcs7->ctx.libctx = libctx; | |
101 | pkcs7->ctx.propq = NULL; | |
102 | if (propq != NULL) { | |
103 | pkcs7->ctx.propq = OPENSSL_strdup(propq); | |
104 | if (pkcs7->ctx.propq == NULL) { | |
105 | PKCS7_free(pkcs7); | |
106 | pkcs7 = NULL; | |
90a1f2d7 SL |
107 | } |
108 | } | |
109 | } | |
110 | return pkcs7; | |
111 | } | |
112 | ||
113 | void PKCS7_free(PKCS7 *p7) | |
114 | { | |
115 | if (p7 != NULL) { | |
116 | OPENSSL_free(p7->ctx.propq); | |
117 | ASN1_item_free((ASN1_VALUE *)p7, ASN1_ITEM_rptr(PKCS7)); | |
118 | } | |
119 | } | |
0f113f3e | 120 | |
230fd6b7 | 121 | IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7) |
0f113f3e | 122 | |
1241126a | 123 | IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7) |
9d6b1ce6 | 124 | |
230fd6b7 | 125 | ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = { |
0f113f3e MC |
126 | ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER), |
127 | ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR), | |
128 | ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7), | |
129 | ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0), | |
130 | ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1), | |
131 | ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO) | |
230fd6b7 | 132 | } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED) |
9d6b1ce6 DSH |
133 | |
134 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED) | |
135 | ||
136 | /* Minor tweak to operation: free up EVP_PKEY */ | |
24484759 | 137 | static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
0f113f3e | 138 | void *exarg) |
9d6b1ce6 | 139 | { |
0f113f3e MC |
140 | if (operation == ASN1_OP_FREE_POST) { |
141 | PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval; | |
142 | EVP_PKEY_free(si->pkey); | |
143 | } | |
144 | return 1; | |
9d6b1ce6 DSH |
145 | } |
146 | ||
147 | ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = { | |
0f113f3e MC |
148 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER), |
149 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), | |
150 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR), | |
151 | /* NB this should be a SET OF but we use a SEQUENCE OF so the | |
152 | * original order * is retained when the structure is reencoded. | |
153 | * Since the attributes are implicitly tagged this will not affect | |
154 | * the encoding. | |
155 | */ | |
156 | ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0), | |
157 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR), | |
158 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING), | |
159 | ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1) | |
d339187b | 160 | } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO) |
9d6b1ce6 DSH |
161 | |
162 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO) | |
163 | ||
164 | ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = { | |
0f113f3e MC |
165 | ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME), |
166 | ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER) | |
d339187b | 167 | } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL) |
9d6b1ce6 DSH |
168 | |
169 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL) | |
170 | ||
230fd6b7 | 171 | ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = { |
0f113f3e MC |
172 | ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER), |
173 | ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), | |
174 | ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT) | |
230fd6b7 | 175 | } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE) |
9d6b1ce6 DSH |
176 | |
177 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE) | |
178 | ||
a43cf9fa | 179 | /* Minor tweak to operation: free up X509 */ |
24484759 | 180 | static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
0f113f3e | 181 | void *exarg) |
a43cf9fa | 182 | { |
0f113f3e MC |
183 | if (operation == ASN1_OP_FREE_POST) { |
184 | PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval; | |
185 | X509_free(ri->cert); | |
186 | } | |
187 | return 1; | |
a43cf9fa DSH |
188 | } |
189 | ||
190 | ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = { | |
0f113f3e MC |
191 | ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER), |
192 | ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), | |
193 | ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR), | |
194 | ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING) | |
d339187b | 195 | } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO) |
9d6b1ce6 DSH |
196 | |
197 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO) | |
198 | ||
230fd6b7 | 199 | ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = { |
0f113f3e MC |
200 | ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT), |
201 | ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR), | |
202 | ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0) | |
230fd6b7 | 203 | } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT) |
9d6b1ce6 DSH |
204 | |
205 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT) | |
206 | ||
230fd6b7 | 207 | ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = { |
0f113f3e MC |
208 | ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER), |
209 | ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), | |
210 | ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR), | |
211 | ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT), | |
212 | ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0), | |
213 | ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1), | |
214 | ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO) | |
230fd6b7 | 215 | } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE) |
9d6b1ce6 DSH |
216 | |
217 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE) | |
218 | ||
230fd6b7 | 219 | ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = { |
0f113f3e MC |
220 | ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER), |
221 | ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT) | |
230fd6b7 | 222 | } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT) |
9d6b1ce6 DSH |
223 | |
224 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT) | |
225 | ||
230fd6b7 | 226 | ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = { |
0f113f3e MC |
227 | ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER), |
228 | ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR), | |
229 | ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7), | |
230 | ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING) | |
230fd6b7 | 231 | } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST) |
3c07b4c2 DSH |
232 | |
233 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST) | |
ec5add87 DSH |
234 | |
235 | /* Specials for authenticated attributes */ | |
236 | ||
0f113f3e MC |
237 | /* |
238 | * When signing attributes we want to reorder them to match the sorted | |
ec5add87 DSH |
239 | * encoding. |
240 | */ | |
241 | ||
0f113f3e MC |
242 | ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = |
243 | ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) | |
d339187b | 244 | ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN) |
ec5add87 | 245 | |
0f113f3e MC |
246 | /* |
247 | * When verifying attributes we need to use the received order. So we use | |
248 | * SEQUENCE OF and tag it to SET OF | |
ec5add87 DSH |
249 | */ |
250 | ||
0f113f3e MC |
251 | ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = |
252 | ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, | |
253 | V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) | |
d339187b | 254 | ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY) |
9194296d DSH |
255 | |
256 | IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7) |