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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; | |
69 | ||
70 | ret = (PKCS7 *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, (PKCS7_it())); | |
038f4dc6 | 71 | if (ret != NULL) |
90a1f2d7 SL |
72 | pkcs7_resolve_libctx(ret); |
73 | return ret; | |
74 | } | |
75 | ||
76 | int i2d_PKCS7(const PKCS7 *a, unsigned char **out) | |
77 | { | |
78 | return ASN1_item_i2d((const ASN1_VALUE *)a, out, (PKCS7_it()));\ | |
79 | } | |
80 | ||
81 | PKCS7 *PKCS7_new(void) | |
82 | { | |
83 | return (PKCS7 *)ASN1_item_new(ASN1_ITEM_rptr(PKCS7)); | |
84 | } | |
85 | ||
b4250010 | 86 | PKCS7 *PKCS7_new_ex(OSSL_LIB_CTX *libctx, const char *propq) |
90a1f2d7 SL |
87 | { |
88 | PKCS7 *pkcs7 = PKCS7_new(); | |
89 | ||
90 | if (pkcs7 != NULL) { | |
91 | pkcs7->ctx.libctx = libctx; | |
92 | pkcs7->ctx.propq = NULL; | |
93 | if (propq != NULL) { | |
94 | pkcs7->ctx.propq = OPENSSL_strdup(propq); | |
95 | if (pkcs7->ctx.propq == NULL) { | |
96 | PKCS7_free(pkcs7); | |
97 | pkcs7 = NULL; | |
98 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
99 | } | |
100 | } | |
101 | } | |
102 | return pkcs7; | |
103 | } | |
104 | ||
105 | void PKCS7_free(PKCS7 *p7) | |
106 | { | |
107 | if (p7 != NULL) { | |
108 | OPENSSL_free(p7->ctx.propq); | |
109 | ASN1_item_free((ASN1_VALUE *)p7, ASN1_ITEM_rptr(PKCS7)); | |
110 | } | |
111 | } | |
0f113f3e | 112 | |
230fd6b7 | 113 | IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7) |
0f113f3e | 114 | |
1241126a | 115 | IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7) |
9d6b1ce6 | 116 | |
230fd6b7 | 117 | ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = { |
0f113f3e MC |
118 | ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER), |
119 | ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR), | |
120 | ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7), | |
121 | ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0), | |
122 | ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1), | |
123 | ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO) | |
230fd6b7 | 124 | } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED) |
9d6b1ce6 DSH |
125 | |
126 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED) | |
127 | ||
128 | /* Minor tweak to operation: free up EVP_PKEY */ | |
24484759 | 129 | static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
0f113f3e | 130 | void *exarg) |
9d6b1ce6 | 131 | { |
0f113f3e MC |
132 | if (operation == ASN1_OP_FREE_POST) { |
133 | PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval; | |
134 | EVP_PKEY_free(si->pkey); | |
135 | } | |
136 | return 1; | |
9d6b1ce6 DSH |
137 | } |
138 | ||
139 | ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = { | |
0f113f3e MC |
140 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER), |
141 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), | |
142 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR), | |
143 | /* NB this should be a SET OF but we use a SEQUENCE OF so the | |
144 | * original order * is retained when the structure is reencoded. | |
145 | * Since the attributes are implicitly tagged this will not affect | |
146 | * the encoding. | |
147 | */ | |
148 | ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0), | |
149 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR), | |
150 | ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING), | |
151 | ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1) | |
d339187b | 152 | } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO) |
9d6b1ce6 DSH |
153 | |
154 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO) | |
155 | ||
156 | ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = { | |
0f113f3e MC |
157 | ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME), |
158 | ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER) | |
d339187b | 159 | } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL) |
9d6b1ce6 DSH |
160 | |
161 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL) | |
162 | ||
230fd6b7 | 163 | ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = { |
0f113f3e MC |
164 | ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER), |
165 | ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), | |
166 | ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT) | |
230fd6b7 | 167 | } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE) |
9d6b1ce6 DSH |
168 | |
169 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE) | |
170 | ||
a43cf9fa | 171 | /* Minor tweak to operation: free up X509 */ |
24484759 | 172 | static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
0f113f3e | 173 | void *exarg) |
a43cf9fa | 174 | { |
0f113f3e MC |
175 | if (operation == ASN1_OP_FREE_POST) { |
176 | PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval; | |
177 | X509_free(ri->cert); | |
178 | } | |
179 | return 1; | |
a43cf9fa DSH |
180 | } |
181 | ||
182 | ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = { | |
0f113f3e MC |
183 | ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER), |
184 | ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL), | |
185 | ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR), | |
186 | ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING) | |
d339187b | 187 | } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO) |
9d6b1ce6 DSH |
188 | |
189 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO) | |
190 | ||
230fd6b7 | 191 | ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = { |
0f113f3e MC |
192 | ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT), |
193 | ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR), | |
194 | ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0) | |
230fd6b7 | 195 | } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT) |
9d6b1ce6 DSH |
196 | |
197 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT) | |
198 | ||
230fd6b7 | 199 | ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = { |
0f113f3e MC |
200 | ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER), |
201 | ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO), | |
202 | ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR), | |
203 | ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT), | |
204 | ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0), | |
205 | ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1), | |
206 | ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO) | |
230fd6b7 | 207 | } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE) |
9d6b1ce6 DSH |
208 | |
209 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE) | |
210 | ||
230fd6b7 | 211 | ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = { |
0f113f3e MC |
212 | ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER), |
213 | ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT) | |
230fd6b7 | 214 | } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT) |
9d6b1ce6 DSH |
215 | |
216 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT) | |
217 | ||
230fd6b7 | 218 | ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = { |
0f113f3e MC |
219 | ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER), |
220 | ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR), | |
221 | ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7), | |
222 | ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING) | |
230fd6b7 | 223 | } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST) |
3c07b4c2 DSH |
224 | |
225 | IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST) | |
ec5add87 DSH |
226 | |
227 | /* Specials for authenticated attributes */ | |
228 | ||
0f113f3e MC |
229 | /* |
230 | * When signing attributes we want to reorder them to match the sorted | |
ec5add87 DSH |
231 | * encoding. |
232 | */ | |
233 | ||
0f113f3e MC |
234 | ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = |
235 | ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) | |
d339187b | 236 | ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN) |
ec5add87 | 237 | |
0f113f3e MC |
238 | /* |
239 | * When verifying attributes we need to use the received order. So we use | |
240 | * SEQUENCE OF and tag it to SET OF | |
ec5add87 DSH |
241 | */ |
242 | ||
0f113f3e MC |
243 | ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = |
244 | ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, | |
245 | V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE) | |
d339187b | 246 | ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY) |
9194296d DSH |
247 | |
248 | IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7) |