1 /*
2 * Copyright 2008-2020 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 <openssl/asn1t.h>
11 #include <openssl/pem.h>
12 #include <openssl/x509v3.h>
13 #include <openssl/cms.h>
14 #include "cms_local.h"
15
16
17 ASN1_SEQUENCE(CMS_IssuerAndSerialNumber) = {
18 ASN1_SIMPLE(CMS_IssuerAndSerialNumber, issuer, X509_NAME),
19 ASN1_SIMPLE(CMS_IssuerAndSerialNumber, serialNumber, ASN1_INTEGER)
20 } ASN1_SEQUENCE_END(CMS_IssuerAndSerialNumber)
21
22 ASN1_SEQUENCE(CMS_OtherCertificateFormat) = {
23 ASN1_SIMPLE(CMS_OtherCertificateFormat, otherCertFormat, ASN1_OBJECT),
24 ASN1_OPT(CMS_OtherCertificateFormat, otherCert, ASN1_ANY)
25 } static_ASN1_SEQUENCE_END(CMS_OtherCertificateFormat)
26
27 ASN1_CHOICE(CMS_CertificateChoices) = {
28 ASN1_SIMPLE(CMS_CertificateChoices, d.certificate, X509),
29 ASN1_IMP(CMS_CertificateChoices, d.extendedCertificate, ASN1_SEQUENCE, 0),
30 ASN1_IMP(CMS_CertificateChoices, d.v1AttrCert, ASN1_SEQUENCE, 1),
31 ASN1_IMP(CMS_CertificateChoices, d.v2AttrCert, ASN1_SEQUENCE, 2),
32 ASN1_IMP(CMS_CertificateChoices, d.other, CMS_OtherCertificateFormat, 3)
33 } ASN1_CHOICE_END(CMS_CertificateChoices)
34
35 ASN1_CHOICE(CMS_SignerIdentifier) = {
36 ASN1_SIMPLE(CMS_SignerIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
37 ASN1_IMP(CMS_SignerIdentifier, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0)
38 } static_ASN1_CHOICE_END(CMS_SignerIdentifier)
39
40 ASN1_NDEF_SEQUENCE(CMS_EncapsulatedContentInfo) = {
41 ASN1_SIMPLE(CMS_EncapsulatedContentInfo, eContentType, ASN1_OBJECT),
42 ASN1_NDEF_EXP_OPT(CMS_EncapsulatedContentInfo, eContent, ASN1_OCTET_STRING_NDEF, 0)
43 } static_ASN1_NDEF_SEQUENCE_END(CMS_EncapsulatedContentInfo)
44
45 /* Minor tweak to operation: free up signer key, cert */
46 static int cms_si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
47 void *exarg)
48 {
49 if (operation == ASN1_OP_FREE_POST) {
50 CMS_SignerInfo *si = (CMS_SignerInfo *)*pval;
51 EVP_PKEY_free(si->pkey);
52 X509_free(si->signer);
53 EVP_MD_CTX_free(si->mctx);
54 }
55 return 1;
56 }
57
58 ASN1_SEQUENCE_cb(CMS_SignerInfo, cms_si_cb) = {
59 ASN1_EMBED(CMS_SignerInfo, version, INT32),
60 ASN1_SIMPLE(CMS_SignerInfo, sid, CMS_SignerIdentifier),
61 ASN1_SIMPLE(CMS_SignerInfo, digestAlgorithm, X509_ALGOR),
62 ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, signedAttrs, X509_ATTRIBUTE, 0),
63 ASN1_SIMPLE(CMS_SignerInfo, signatureAlgorithm, X509_ALGOR),
64 ASN1_SIMPLE(CMS_SignerInfo, signature, ASN1_OCTET_STRING),
65 ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, unsignedAttrs, X509_ATTRIBUTE, 1)
66 } ASN1_SEQUENCE_END_cb(CMS_SignerInfo, CMS_SignerInfo)
67
68 ASN1_SEQUENCE(CMS_OtherRevocationInfoFormat) = {
69 ASN1_SIMPLE(CMS_OtherRevocationInfoFormat, otherRevInfoFormat, ASN1_OBJECT),
70 ASN1_OPT(CMS_OtherRevocationInfoFormat, otherRevInfo, ASN1_ANY)
71 } static_ASN1_SEQUENCE_END(CMS_OtherRevocationInfoFormat)
72
73 ASN1_CHOICE(CMS_RevocationInfoChoice) = {
74 ASN1_SIMPLE(CMS_RevocationInfoChoice, d.crl, X509_CRL),
75 ASN1_IMP(CMS_RevocationInfoChoice, d.other, CMS_OtherRevocationInfoFormat, 1)
76 } ASN1_CHOICE_END(CMS_RevocationInfoChoice)
77
78 ASN1_NDEF_SEQUENCE(CMS_SignedData) = {
79 ASN1_EMBED(CMS_SignedData, version, INT32),
80 ASN1_SET_OF(CMS_SignedData, digestAlgorithms, X509_ALGOR),
81 ASN1_SIMPLE(CMS_SignedData, encapContentInfo, CMS_EncapsulatedContentInfo),
82 ASN1_IMP_SET_OF_OPT(CMS_SignedData, certificates, CMS_CertificateChoices, 0),
83 ASN1_IMP_SET_OF_OPT(CMS_SignedData, crls, CMS_RevocationInfoChoice, 1),
84 ASN1_SET_OF(CMS_SignedData, signerInfos, CMS_SignerInfo)
85 } ASN1_NDEF_SEQUENCE_END(CMS_SignedData)
86
87 ASN1_SEQUENCE(CMS_OriginatorInfo) = {
88 ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, certificates, CMS_CertificateChoices, 0),
89 ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, crls, CMS_RevocationInfoChoice, 1)
90 } static_ASN1_SEQUENCE_END(CMS_OriginatorInfo)
91
92 ASN1_NDEF_SEQUENCE(CMS_EncryptedContentInfo) = {
93 ASN1_SIMPLE(CMS_EncryptedContentInfo, contentType, ASN1_OBJECT),
94 ASN1_SIMPLE(CMS_EncryptedContentInfo, contentEncryptionAlgorithm, X509_ALGOR),
95 ASN1_IMP_OPT(CMS_EncryptedContentInfo, encryptedContent, ASN1_OCTET_STRING_NDEF, 0)
96 } static_ASN1_NDEF_SEQUENCE_END(CMS_EncryptedContentInfo)
97
98 ASN1_SEQUENCE(CMS_KeyTransRecipientInfo) = {
99 ASN1_EMBED(CMS_KeyTransRecipientInfo, version, INT32),
100 ASN1_SIMPLE(CMS_KeyTransRecipientInfo, rid, CMS_SignerIdentifier),
101 ASN1_SIMPLE(CMS_KeyTransRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
102 ASN1_SIMPLE(CMS_KeyTransRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
103 } ASN1_SEQUENCE_END(CMS_KeyTransRecipientInfo)
104
105 ASN1_SEQUENCE(CMS_OtherKeyAttribute) = {
106 ASN1_SIMPLE(CMS_OtherKeyAttribute, keyAttrId, ASN1_OBJECT),
107 ASN1_OPT(CMS_OtherKeyAttribute, keyAttr, ASN1_ANY)
108 } ASN1_SEQUENCE_END(CMS_OtherKeyAttribute)
109
110 ASN1_SEQUENCE(CMS_RecipientKeyIdentifier) = {
111 ASN1_SIMPLE(CMS_RecipientKeyIdentifier, subjectKeyIdentifier, ASN1_OCTET_STRING),
112 ASN1_OPT(CMS_RecipientKeyIdentifier, date, ASN1_GENERALIZEDTIME),
113 ASN1_OPT(CMS_RecipientKeyIdentifier, other, CMS_OtherKeyAttribute)
114 } ASN1_SEQUENCE_END(CMS_RecipientKeyIdentifier)
115
116 ASN1_CHOICE(CMS_KeyAgreeRecipientIdentifier) = {
117 ASN1_SIMPLE(CMS_KeyAgreeRecipientIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
118 ASN1_IMP(CMS_KeyAgreeRecipientIdentifier, d.rKeyId, CMS_RecipientKeyIdentifier, 0)
119 } static_ASN1_CHOICE_END(CMS_KeyAgreeRecipientIdentifier)
120
121 static int cms_rek_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
122 void *exarg)
123 {
124 CMS_RecipientEncryptedKey *rek = (CMS_RecipientEncryptedKey *)*pval;
125 if (operation == ASN1_OP_FREE_POST) {
126 EVP_PKEY_free(rek->pkey);
127 }
128 return 1;
129 }
130
131 ASN1_SEQUENCE_cb(CMS_RecipientEncryptedKey, cms_rek_cb) = {
132 ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier),
133 ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING)
134 } ASN1_SEQUENCE_END_cb(CMS_RecipientEncryptedKey, CMS_RecipientEncryptedKey)
135
136 ASN1_SEQUENCE(CMS_OriginatorPublicKey) = {
137 ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR),
138 ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING)
139 } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey)
140
141 ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = {
142 ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
143 ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0),
144 ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1)
145 } static_ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey)
146
147 static int cms_kari_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
148 void *exarg)
149 {
150 CMS_KeyAgreeRecipientInfo *kari = (CMS_KeyAgreeRecipientInfo *)*pval;
151 if (operation == ASN1_OP_NEW_POST) {
152 kari->ctx = EVP_CIPHER_CTX_new();
153 if (kari->ctx == NULL)
154 return 0;
155 EVP_CIPHER_CTX_set_flags(kari->ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
156 kari->pctx = NULL;
157 } else if (operation == ASN1_OP_FREE_POST) {
158 EVP_PKEY_CTX_free(kari->pctx);
159 EVP_CIPHER_CTX_free(kari->ctx);
160 }
161 return 1;
162 }
163
164 ASN1_SEQUENCE_cb(CMS_KeyAgreeRecipientInfo, cms_kari_cb) = {
165 ASN1_EMBED(CMS_KeyAgreeRecipientInfo, version, INT32),
166 ASN1_EXP(CMS_KeyAgreeRecipientInfo, originator, CMS_OriginatorIdentifierOrKey, 0),
167 ASN1_EXP_OPT(CMS_KeyAgreeRecipientInfo, ukm, ASN1_OCTET_STRING, 1),
168 ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
169 ASN1_SEQUENCE_OF(CMS_KeyAgreeRecipientInfo, recipientEncryptedKeys, CMS_RecipientEncryptedKey)
170 } ASN1_SEQUENCE_END_cb(CMS_KeyAgreeRecipientInfo, CMS_KeyAgreeRecipientInfo)
171
172 ASN1_SEQUENCE(CMS_KEKIdentifier) = {
173 ASN1_SIMPLE(CMS_KEKIdentifier, keyIdentifier, ASN1_OCTET_STRING),
174 ASN1_OPT(CMS_KEKIdentifier, date, ASN1_GENERALIZEDTIME),
175 ASN1_OPT(CMS_KEKIdentifier, other, CMS_OtherKeyAttribute)
176 } static_ASN1_SEQUENCE_END(CMS_KEKIdentifier)
177
178 ASN1_SEQUENCE(CMS_KEKRecipientInfo) = {
179 ASN1_EMBED(CMS_KEKRecipientInfo, version, INT32),
180 ASN1_SIMPLE(CMS_KEKRecipientInfo, kekid, CMS_KEKIdentifier),
181 ASN1_SIMPLE(CMS_KEKRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
182 ASN1_SIMPLE(CMS_KEKRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
183 } ASN1_SEQUENCE_END(CMS_KEKRecipientInfo)
184
185 ASN1_SEQUENCE(CMS_PasswordRecipientInfo) = {
186 ASN1_EMBED(CMS_PasswordRecipientInfo, version, INT32),
187 ASN1_IMP_OPT(CMS_PasswordRecipientInfo, keyDerivationAlgorithm, X509_ALGOR, 0),
188 ASN1_SIMPLE(CMS_PasswordRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
189 ASN1_SIMPLE(CMS_PasswordRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
190 } ASN1_SEQUENCE_END(CMS_PasswordRecipientInfo)
191
192 ASN1_SEQUENCE(CMS_OtherRecipientInfo) = {
193 ASN1_SIMPLE(CMS_OtherRecipientInfo, oriType, ASN1_OBJECT),
194 ASN1_OPT(CMS_OtherRecipientInfo, oriValue, ASN1_ANY)
195 } static_ASN1_SEQUENCE_END(CMS_OtherRecipientInfo)
196
197 /* Free up RecipientInfo additional data */
198 static int cms_ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
199 void *exarg)
200 {
201 if (operation == ASN1_OP_FREE_PRE) {
202 CMS_RecipientInfo *ri = (CMS_RecipientInfo *)*pval;
203 if (ri->type == CMS_RECIPINFO_TRANS) {
204 CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
205 EVP_PKEY_free(ktri->pkey);
206 X509_free(ktri->recip);
207 EVP_PKEY_CTX_free(ktri->pctx);
208 } else if (ri->type == CMS_RECIPINFO_KEK) {
209 CMS_KEKRecipientInfo *kekri = ri->d.kekri;
210 OPENSSL_clear_free(kekri->key, kekri->keylen);
211 } else if (ri->type == CMS_RECIPINFO_PASS) {
212 CMS_PasswordRecipientInfo *pwri = ri->d.pwri;
213 OPENSSL_clear_free(pwri->pass, pwri->passlen);
214 }
215 }
216 return 1;
217 }
218
219 ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = {
220 ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo),
221 ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1),
222 ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2),
223 ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3),
224 ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4)
225 } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type)
226
227 ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = {
228 ASN1_EMBED(CMS_EnvelopedData, version, INT32),
229 ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
230 ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo),
231 ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo),
232 ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
233 } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData)
234
235 ASN1_NDEF_SEQUENCE(CMS_DigestedData) = {
236 ASN1_EMBED(CMS_DigestedData, version, INT32),
237 ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR),
238 ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo),
239 ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING)
240 } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData)
241
242 ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = {
243 ASN1_EMBED(CMS_EncryptedData, version, INT32),
244 ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo),
245 ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
246 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData)
247
248 /* Defined in RFC 5083 - Section 2.1. AuthEnvelopedData Type */
249 ASN1_NDEF_SEQUENCE(CMS_AuthEnvelopedData) = {
250 ASN1_EMBED(CMS_AuthEnvelopedData, version, INT32),
251 ASN1_IMP_OPT(CMS_AuthEnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
252 ASN1_SET_OF(CMS_AuthEnvelopedData, recipientInfos, CMS_RecipientInfo),
253 ASN1_SIMPLE(CMS_AuthEnvelopedData, authEncryptedContentInfo, CMS_EncryptedContentInfo),
254 ASN1_IMP_SET_OF_OPT(CMS_AuthEnvelopedData, authAttrs, X509_ALGOR, 2),
255 ASN1_SIMPLE(CMS_AuthEnvelopedData, mac, ASN1_OCTET_STRING),
256 ASN1_IMP_SET_OF_OPT(CMS_AuthEnvelopedData, unauthAttrs, X509_ALGOR, 3)
257 } ASN1_NDEF_SEQUENCE_END(CMS_AuthEnvelopedData)
258
259 ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = {
260 ASN1_EMBED(CMS_AuthenticatedData, version, INT32),
261 ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0),
262 ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo),
263 ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR),
264 ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1),
265 ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo),
266 ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2),
267 ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING),
268 ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3)
269 } static_ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData)
270
271 ASN1_NDEF_SEQUENCE(CMS_CompressedData) = {
272 ASN1_EMBED(CMS_CompressedData, version, INT32),
273 ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR),
274 ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo),
275 } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData)
276
277 /* This is the ANY DEFINED BY table for the top level ContentInfo structure */
278
279 ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0);
280
281 ASN1_ADB(CMS_ContentInfo) = {
282 ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)),
283 ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)),
284 ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)),
285 ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)),
286 ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)),
287 ADB_ENTRY(NID_id_smime_ct_authEnvelopedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authEnvelopedData, CMS_AuthEnvelopedData, 0)),
288 ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)),
289 ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)),
290 } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL);
291
292 /* CMS streaming support */
cms_cb(int operation,ASN1_VALUE ** pval,const ASN1_ITEM * it,void * exarg)293 static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
294 void *exarg)
295 {
296 ASN1_STREAM_ARG *sarg = exarg;
297 CMS_ContentInfo *cms = NULL;
298 if (pval)
299 cms = (CMS_ContentInfo *)*pval;
300 else
301 return 1;
302 switch (operation) {
303
304 case ASN1_OP_STREAM_PRE:
305 if (CMS_stream(&sarg->boundary, cms) <= 0)
306 return 0;
307 /* fall thru */
308 case ASN1_OP_DETACHED_PRE:
309 sarg->ndef_bio = CMS_dataInit(cms, sarg->out);
310 if (!sarg->ndef_bio)
311 return 0;
312 break;
313
314 case ASN1_OP_STREAM_POST:
315 case ASN1_OP_DETACHED_POST:
316 if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0)
317 return 0;
318 break;
319
320 }
321 return 1;
322 }
323
324 ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = {
325 ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT),
326 ASN1_ADB_OBJECT(CMS_ContentInfo)
327 } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo)
328
329 /* Specials for signed attributes */
330
331 /*
332 * When signing attributes we want to reorder them to match the sorted
333 * encoding.
334 */
335
336 ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) =
337 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE)
338 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign)
339
340 /*
341 * When verifying attributes we need to use the received order. So we use
342 * SEQUENCE OF and tag it to SET OF
343 */
344
345 ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) =
346 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
347 V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE)
348 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify)
349
350
351
352 ASN1_CHOICE(CMS_ReceiptsFrom) = {
353 ASN1_IMP_EMBED(CMS_ReceiptsFrom, d.allOrFirstTier, INT32, 0),
354 ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1)
355 } static_ASN1_CHOICE_END(CMS_ReceiptsFrom)
356
357 ASN1_SEQUENCE(CMS_ReceiptRequest) = {
358 ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING),
359 ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom),
360 ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES)
361 } ASN1_SEQUENCE_END(CMS_ReceiptRequest)
362
363 ASN1_SEQUENCE(CMS_Receipt) = {
364 ASN1_EMBED(CMS_Receipt, version, INT32),
365 ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT),
366 ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING),
367 ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING)
368 } ASN1_SEQUENCE_END(CMS_Receipt)
369
370 /*
371 * Utilities to encode the CMS_SharedInfo structure used during key
372 * derivation.
373 */
374
375 typedef struct {
376 X509_ALGOR *keyInfo;
377 ASN1_OCTET_STRING *entityUInfo;
378 ASN1_OCTET_STRING *suppPubInfo;
379 } CMS_SharedInfo;
380
381 ASN1_SEQUENCE(CMS_SharedInfo) = {
382 ASN1_SIMPLE(CMS_SharedInfo, keyInfo, X509_ALGOR),
383 ASN1_EXP_OPT(CMS_SharedInfo, entityUInfo, ASN1_OCTET_STRING, 0),
384 ASN1_EXP_OPT(CMS_SharedInfo, suppPubInfo, ASN1_OCTET_STRING, 2),
385 } static_ASN1_SEQUENCE_END(CMS_SharedInfo)
386
387 int CMS_SharedInfo_encode(unsigned char **pder, X509_ALGOR *kekalg,
388 ASN1_OCTET_STRING *ukm, int keylen)
389 {
390 union {
391 CMS_SharedInfo *pecsi;
392 ASN1_VALUE *a;
393 } intsi = {
394 NULL
395 };
396
397 ASN1_OCTET_STRING oklen;
398 unsigned char kl[4];
399 CMS_SharedInfo ecsi;
400
401 keylen <<= 3;
402 kl[0] = (keylen >> 24) & 0xff;
403 kl[1] = (keylen >> 16) & 0xff;
404 kl[2] = (keylen >> 8) & 0xff;
405 kl[3] = keylen & 0xff;
406 oklen.length = 4;
407 oklen.data = kl;
408 oklen.type = V_ASN1_OCTET_STRING;
409 oklen.flags = 0;
410 ecsi.keyInfo = kekalg;
411 ecsi.entityUInfo = ukm;
412 ecsi.suppPubInfo = &oklen;
413 intsi.pecsi = &ecsi;
414 return ASN1_item_i2d(intsi.a, pder, ASN1_ITEM_rptr(CMS_SharedInfo));
415 }
416