xref: /openssl/crypto/cms/cms_asn1.c (revision 7ed6de99)
1 /*
2  * Copyright 2008-2024 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 <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         EVP_PKEY_CTX_free(si->pctx);
55     }
56     return 1;
57 }
58 
59 ASN1_SEQUENCE_cb(CMS_SignerInfo, cms_si_cb) = {
60         ASN1_EMBED(CMS_SignerInfo, version, INT32),
61         ASN1_SIMPLE(CMS_SignerInfo, sid, CMS_SignerIdentifier),
62         ASN1_SIMPLE(CMS_SignerInfo, digestAlgorithm, X509_ALGOR),
63         ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, signedAttrs, X509_ATTRIBUTE, 0),
64         ASN1_SIMPLE(CMS_SignerInfo, signatureAlgorithm, X509_ALGOR),
65         ASN1_SIMPLE(CMS_SignerInfo, signature, ASN1_OCTET_STRING),
66         ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, unsignedAttrs, X509_ATTRIBUTE, 1)
67 } ASN1_SEQUENCE_END_cb(CMS_SignerInfo, CMS_SignerInfo)
68 
69 ASN1_SEQUENCE(CMS_OtherRevocationInfoFormat) = {
70         ASN1_SIMPLE(CMS_OtherRevocationInfoFormat, otherRevInfoFormat, ASN1_OBJECT),
71         ASN1_OPT(CMS_OtherRevocationInfoFormat, otherRevInfo, ASN1_ANY)
72 } static_ASN1_SEQUENCE_END(CMS_OtherRevocationInfoFormat)
73 
74 ASN1_CHOICE(CMS_RevocationInfoChoice) = {
75         ASN1_SIMPLE(CMS_RevocationInfoChoice, d.crl, X509_CRL),
76         ASN1_IMP(CMS_RevocationInfoChoice, d.other, CMS_OtherRevocationInfoFormat, 1)
77 } ASN1_CHOICE_END(CMS_RevocationInfoChoice)
78 
79 ASN1_NDEF_SEQUENCE(CMS_SignedData) = {
80         ASN1_EMBED(CMS_SignedData, version, INT32),
81         ASN1_SET_OF(CMS_SignedData, digestAlgorithms, X509_ALGOR),
82         ASN1_SIMPLE(CMS_SignedData, encapContentInfo, CMS_EncapsulatedContentInfo),
83         ASN1_IMP_SET_OF_OPT(CMS_SignedData, certificates, CMS_CertificateChoices, 0),
84         ASN1_IMP_SET_OF_OPT(CMS_SignedData, crls, CMS_RevocationInfoChoice, 1),
85         ASN1_SET_OF(CMS_SignedData, signerInfos, CMS_SignerInfo)
86 } ASN1_NDEF_SEQUENCE_END(CMS_SignedData)
87 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(CMS_SignedData)
88 
89 ASN1_SEQUENCE(CMS_OriginatorInfo) = {
90         ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, certificates, CMS_CertificateChoices, 0),
91         ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, crls, CMS_RevocationInfoChoice, 1)
92 } static_ASN1_SEQUENCE_END(CMS_OriginatorInfo)
93 
94 static int cms_ec_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
95                      void *exarg)
96 {
97     CMS_EncryptedContentInfo *ec = (CMS_EncryptedContentInfo *)*pval;
98 
99     if (operation == ASN1_OP_FREE_POST)
100         OPENSSL_clear_free(ec->key, ec->keylen);
101     return 1;
102 }
103 
104 ASN1_NDEF_SEQUENCE_cb(CMS_EncryptedContentInfo, cms_ec_cb) = {
105         ASN1_SIMPLE(CMS_EncryptedContentInfo, contentType, ASN1_OBJECT),
106         ASN1_SIMPLE(CMS_EncryptedContentInfo, contentEncryptionAlgorithm, X509_ALGOR),
107         ASN1_IMP_OPT(CMS_EncryptedContentInfo, encryptedContent, ASN1_OCTET_STRING_NDEF, 0)
108 } ASN1_NDEF_SEQUENCE_END_cb(CMS_EncryptedContentInfo, CMS_EncryptedContentInfo)
109 
110 ASN1_SEQUENCE(CMS_KeyTransRecipientInfo) = {
111         ASN1_EMBED(CMS_KeyTransRecipientInfo, version, INT32),
112         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, rid, CMS_SignerIdentifier),
113         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
114         ASN1_SIMPLE(CMS_KeyTransRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
115 } ASN1_SEQUENCE_END(CMS_KeyTransRecipientInfo)
116 
117 ASN1_SEQUENCE(CMS_OtherKeyAttribute) = {
118         ASN1_SIMPLE(CMS_OtherKeyAttribute, keyAttrId, ASN1_OBJECT),
119         ASN1_OPT(CMS_OtherKeyAttribute, keyAttr, ASN1_ANY)
120 } ASN1_SEQUENCE_END(CMS_OtherKeyAttribute)
121 
122 ASN1_SEQUENCE(CMS_RecipientKeyIdentifier) = {
123         ASN1_SIMPLE(CMS_RecipientKeyIdentifier, subjectKeyIdentifier, ASN1_OCTET_STRING),
124         ASN1_OPT(CMS_RecipientKeyIdentifier, date, ASN1_GENERALIZEDTIME),
125         ASN1_OPT(CMS_RecipientKeyIdentifier, other, CMS_OtherKeyAttribute)
126 } ASN1_SEQUENCE_END(CMS_RecipientKeyIdentifier)
127 
128 ASN1_CHOICE(CMS_KeyAgreeRecipientIdentifier) = {
129   ASN1_SIMPLE(CMS_KeyAgreeRecipientIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
130   ASN1_IMP(CMS_KeyAgreeRecipientIdentifier, d.rKeyId, CMS_RecipientKeyIdentifier, 0)
131 } static_ASN1_CHOICE_END(CMS_KeyAgreeRecipientIdentifier)
132 
133 static int cms_rek_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
134                       void *exarg)
135 {
136     CMS_RecipientEncryptedKey *rek = (CMS_RecipientEncryptedKey *)*pval;
137     if (operation == ASN1_OP_FREE_POST) {
138         EVP_PKEY_free(rek->pkey);
139     }
140     return 1;
141 }
142 
143 ASN1_SEQUENCE_cb(CMS_RecipientEncryptedKey, cms_rek_cb) = {
144         ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier),
145         ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING)
146 } ASN1_SEQUENCE_END_cb(CMS_RecipientEncryptedKey, CMS_RecipientEncryptedKey)
147 
148 ASN1_SEQUENCE(CMS_OriginatorPublicKey) = {
149   ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR),
150   ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING)
151 } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey)
152 
153 ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = {
154   ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
155   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0),
156   ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1)
157 } static_ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey)
158 
159 static int cms_kari_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
160                        void *exarg)
161 {
162     CMS_KeyAgreeRecipientInfo *kari = (CMS_KeyAgreeRecipientInfo *)*pval;
163     if (operation == ASN1_OP_NEW_POST) {
164         kari->ctx = EVP_CIPHER_CTX_new();
165         if (kari->ctx == NULL)
166             return 0;
167         EVP_CIPHER_CTX_set_flags(kari->ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
168         kari->pctx = NULL;
169     } else if (operation == ASN1_OP_FREE_POST) {
170         EVP_PKEY_CTX_free(kari->pctx);
171         EVP_CIPHER_CTX_free(kari->ctx);
172     }
173     return 1;
174 }
175 
176 ASN1_SEQUENCE_cb(CMS_KeyAgreeRecipientInfo, cms_kari_cb) = {
177         ASN1_EMBED(CMS_KeyAgreeRecipientInfo, version, INT32),
178         ASN1_EXP(CMS_KeyAgreeRecipientInfo, originator, CMS_OriginatorIdentifierOrKey, 0),
179         ASN1_EXP_OPT(CMS_KeyAgreeRecipientInfo, ukm, ASN1_OCTET_STRING, 1),
180         ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
181         ASN1_SEQUENCE_OF(CMS_KeyAgreeRecipientInfo, recipientEncryptedKeys, CMS_RecipientEncryptedKey)
182 } ASN1_SEQUENCE_END_cb(CMS_KeyAgreeRecipientInfo, CMS_KeyAgreeRecipientInfo)
183 
184 ASN1_SEQUENCE(CMS_KEKIdentifier) = {
185         ASN1_SIMPLE(CMS_KEKIdentifier, keyIdentifier, ASN1_OCTET_STRING),
186         ASN1_OPT(CMS_KEKIdentifier, date, ASN1_GENERALIZEDTIME),
187         ASN1_OPT(CMS_KEKIdentifier, other, CMS_OtherKeyAttribute)
188 } static_ASN1_SEQUENCE_END(CMS_KEKIdentifier)
189 
190 ASN1_SEQUENCE(CMS_KEKRecipientInfo) = {
191         ASN1_EMBED(CMS_KEKRecipientInfo, version, INT32),
192         ASN1_SIMPLE(CMS_KEKRecipientInfo, kekid, CMS_KEKIdentifier),
193         ASN1_SIMPLE(CMS_KEKRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
194         ASN1_SIMPLE(CMS_KEKRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
195 } ASN1_SEQUENCE_END(CMS_KEKRecipientInfo)
196 
197 ASN1_SEQUENCE(CMS_PasswordRecipientInfo) = {
198         ASN1_EMBED(CMS_PasswordRecipientInfo, version, INT32),
199         ASN1_IMP_OPT(CMS_PasswordRecipientInfo, keyDerivationAlgorithm, X509_ALGOR, 0),
200         ASN1_SIMPLE(CMS_PasswordRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
201         ASN1_SIMPLE(CMS_PasswordRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
202 } ASN1_SEQUENCE_END(CMS_PasswordRecipientInfo)
203 
204 ASN1_SEQUENCE(CMS_OtherRecipientInfo) = {
205   ASN1_SIMPLE(CMS_OtherRecipientInfo, oriType, ASN1_OBJECT),
206   ASN1_OPT(CMS_OtherRecipientInfo, oriValue, ASN1_ANY)
207 } static_ASN1_SEQUENCE_END(CMS_OtherRecipientInfo)
208 
209 /* Free up RecipientInfo additional data */
210 static int cms_ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
211                      void *exarg)
212 {
213     if (operation == ASN1_OP_FREE_PRE) {
214         CMS_RecipientInfo *ri = (CMS_RecipientInfo *)*pval;
215         if (ri->type == CMS_RECIPINFO_TRANS) {
216             CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
217             EVP_PKEY_free(ktri->pkey);
218             X509_free(ktri->recip);
219             EVP_PKEY_CTX_free(ktri->pctx);
220         } else if (ri->type == CMS_RECIPINFO_KEK) {
221             CMS_KEKRecipientInfo *kekri = ri->d.kekri;
222             OPENSSL_clear_free(kekri->key, kekri->keylen);
223         } else if (ri->type == CMS_RECIPINFO_PASS) {
224             CMS_PasswordRecipientInfo *pwri = ri->d.pwri;
225             OPENSSL_clear_free(pwri->pass, pwri->passlen);
226         }
227     }
228     return 1;
229 }
230 
231 ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = {
232         ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo),
233         ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1),
234         ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2),
235         ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3),
236         ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4)
237 } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type)
238 
239 ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = {
240         ASN1_EMBED(CMS_EnvelopedData, version, INT32),
241         ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
242         ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo),
243         ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo),
244         ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
245 } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData)
246 
247 ASN1_NDEF_SEQUENCE(CMS_DigestedData) = {
248         ASN1_EMBED(CMS_DigestedData, version, INT32),
249         ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR),
250         ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo),
251         ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING)
252 } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData)
253 
254 ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = {
255         ASN1_EMBED(CMS_EncryptedData, version, INT32),
256         ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo),
257         ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
258 } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData)
259 
260 /* Defined in RFC 5083 - Section 2.1. AuthEnvelopedData Type */
261 ASN1_NDEF_SEQUENCE(CMS_AuthEnvelopedData) = {
262         ASN1_EMBED(CMS_AuthEnvelopedData, version, INT32),
263         ASN1_IMP_OPT(CMS_AuthEnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
264         ASN1_SET_OF(CMS_AuthEnvelopedData, recipientInfos, CMS_RecipientInfo),
265         ASN1_SIMPLE(CMS_AuthEnvelopedData, authEncryptedContentInfo, CMS_EncryptedContentInfo),
266         ASN1_IMP_SET_OF_OPT(CMS_AuthEnvelopedData, authAttrs, X509_ALGOR, 2),
267         ASN1_SIMPLE(CMS_AuthEnvelopedData, mac, ASN1_OCTET_STRING),
268         ASN1_IMP_SET_OF_OPT(CMS_AuthEnvelopedData, unauthAttrs, X509_ALGOR, 3)
269 } ASN1_NDEF_SEQUENCE_END(CMS_AuthEnvelopedData)
270 
271 ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = {
272         ASN1_EMBED(CMS_AuthenticatedData, version, INT32),
273         ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0),
274         ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo),
275         ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR),
276         ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1),
277         ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo),
278         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2),
279         ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING),
280         ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3)
281 } static_ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData)
282 
283 ASN1_NDEF_SEQUENCE(CMS_CompressedData) = {
284         ASN1_EMBED(CMS_CompressedData, version, INT32),
285         ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR),
286         ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo),
287 } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData)
288 
289 /* This is the ANY DEFINED BY table for the top level ContentInfo structure */
290 
291 ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0);
292 
293 ASN1_ADB(CMS_ContentInfo) = {
294         ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)),
295         ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)),
296         ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)),
297         ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)),
298         ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)),
299         ADB_ENTRY(NID_id_smime_ct_authEnvelopedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authEnvelopedData, CMS_AuthEnvelopedData, 0)),
300         ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)),
301         ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)),
302 } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL);
303 
304 /* CMS streaming support */
cms_cb(int operation,ASN1_VALUE ** pval,const ASN1_ITEM * it,void * exarg)305 static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
306                   void *exarg)
307 {
308     ASN1_STREAM_ARG *sarg = exarg;
309     CMS_ContentInfo *cms = NULL;
310     if (pval)
311         cms = (CMS_ContentInfo *)*pval;
312     else
313         return 1;
314     switch (operation) {
315 
316     case ASN1_OP_STREAM_PRE:
317         if (CMS_stream(&sarg->boundary, cms) <= 0)
318             return 0;
319         /* fall through */
320     case ASN1_OP_DETACHED_PRE:
321         sarg->ndef_bio = CMS_dataInit(cms, sarg->out);
322         if (!sarg->ndef_bio)
323             return 0;
324         break;
325 
326     case ASN1_OP_STREAM_POST:
327     case ASN1_OP_DETACHED_POST:
328         if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0)
329             return 0;
330         break;
331 
332     case ASN1_OP_FREE_POST:
333         OPENSSL_free(cms->ctx.propq);
334         break;
335 
336     }
337     return 1;
338 }
339 
340 ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = {
341         ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT),
342         ASN1_ADB_OBJECT(CMS_ContentInfo)
343 } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo)
344 
345 /* Specials for signed attributes */
346 
347 /*
348  * When signing attributes we want to reorder them to match the sorted
349  * encoding.
350  */
351 
352 ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) =
353         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE)
354 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign)
355 
356 /*
357  * When verifying attributes we need to use the received order. So we use
358  * SEQUENCE OF and tag it to SET OF
359  */
360 
361 ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) =
362         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
363                                 V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE)
364 ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify)
365 
366 
367 
368 ASN1_CHOICE(CMS_ReceiptsFrom) = {
369   ASN1_IMP_EMBED(CMS_ReceiptsFrom, d.allOrFirstTier, INT32, 0),
370   ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1)
371 } static_ASN1_CHOICE_END(CMS_ReceiptsFrom)
372 
373 ASN1_SEQUENCE(CMS_ReceiptRequest) = {
374   ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING),
375   ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom),
376   ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES)
377 } ASN1_SEQUENCE_END(CMS_ReceiptRequest)
378 
379 ASN1_SEQUENCE(CMS_Receipt) = {
380   ASN1_EMBED(CMS_Receipt, version, INT32),
381   ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT),
382   ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING),
383   ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING)
384 } ASN1_SEQUENCE_END(CMS_Receipt)
385 
386 /*
387  * Utilities to encode the CMS_SharedInfo structure used during key
388  * derivation.
389  */
390 
391 typedef struct {
392     X509_ALGOR *keyInfo;
393     ASN1_OCTET_STRING *entityUInfo;
394     ASN1_OCTET_STRING *suppPubInfo;
395 } CMS_SharedInfo;
396 
397 ASN1_SEQUENCE(CMS_SharedInfo) = {
398   ASN1_SIMPLE(CMS_SharedInfo, keyInfo, X509_ALGOR),
399   ASN1_EXP_OPT(CMS_SharedInfo, entityUInfo, ASN1_OCTET_STRING, 0),
400   ASN1_EXP_OPT(CMS_SharedInfo, suppPubInfo, ASN1_OCTET_STRING, 2),
401 } static_ASN1_SEQUENCE_END(CMS_SharedInfo)
402 
403 int CMS_SharedInfo_encode(unsigned char **pder, X509_ALGOR *kekalg,
404                           ASN1_OCTET_STRING *ukm, int keylen)
405 {
406     union {
407         CMS_SharedInfo *pecsi;
408         ASN1_VALUE *a;
409     } intsi = {
410         NULL
411     };
412 
413     ASN1_OCTET_STRING oklen;
414     unsigned char kl[4];
415     CMS_SharedInfo ecsi;
416 
417     keylen <<= 3;
418     kl[0] = (keylen >> 24) & 0xff;
419     kl[1] = (keylen >> 16) & 0xff;
420     kl[2] = (keylen >> 8) & 0xff;
421     kl[3] = keylen & 0xff;
422     oklen.length = 4;
423     oklen.data = kl;
424     oklen.type = V_ASN1_OCTET_STRING;
425     oklen.flags = 0;
426     ecsi.keyInfo = kekalg;
427     ecsi.entityUInfo = ukm;
428     ecsi.suppPubInfo = &oklen;
429     intsi.pecsi = &ecsi;
430     return ASN1_item_i2d(intsi.a, pder, ASN1_ITEM_rptr(CMS_SharedInfo));
431 }
432