cms_asn1.c 17 KB

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  1. /*
  2. * Copyright 2008-2016 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. #include <openssl/asn1t.h>
  10. #include <openssl/pem.h>
  11. #include <openssl/x509v3.h>
  12. #include <openssl/cms.h>
  13. #include "cms_lcl.h"
  14. ASN1_SEQUENCE(CMS_IssuerAndSerialNumber) = {
  15. ASN1_SIMPLE(CMS_IssuerAndSerialNumber, issuer, X509_NAME),
  16. ASN1_SIMPLE(CMS_IssuerAndSerialNumber, serialNumber, ASN1_INTEGER)
  17. } ASN1_SEQUENCE_END(CMS_IssuerAndSerialNumber)
  18. ASN1_SEQUENCE(CMS_OtherCertificateFormat) = {
  19. ASN1_SIMPLE(CMS_OtherCertificateFormat, otherCertFormat, ASN1_OBJECT),
  20. ASN1_OPT(CMS_OtherCertificateFormat, otherCert, ASN1_ANY)
  21. } static_ASN1_SEQUENCE_END(CMS_OtherCertificateFormat)
  22. ASN1_CHOICE(CMS_CertificateChoices) = {
  23. ASN1_SIMPLE(CMS_CertificateChoices, d.certificate, X509),
  24. ASN1_IMP(CMS_CertificateChoices, d.extendedCertificate, ASN1_SEQUENCE, 0),
  25. ASN1_IMP(CMS_CertificateChoices, d.v1AttrCert, ASN1_SEQUENCE, 1),
  26. ASN1_IMP(CMS_CertificateChoices, d.v2AttrCert, ASN1_SEQUENCE, 2),
  27. ASN1_IMP(CMS_CertificateChoices, d.other, CMS_OtherCertificateFormat, 3)
  28. } ASN1_CHOICE_END(CMS_CertificateChoices)
  29. ASN1_CHOICE(CMS_SignerIdentifier) = {
  30. ASN1_SIMPLE(CMS_SignerIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
  31. ASN1_IMP(CMS_SignerIdentifier, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0)
  32. } static_ASN1_CHOICE_END(CMS_SignerIdentifier)
  33. ASN1_NDEF_SEQUENCE(CMS_EncapsulatedContentInfo) = {
  34. ASN1_SIMPLE(CMS_EncapsulatedContentInfo, eContentType, ASN1_OBJECT),
  35. ASN1_NDEF_EXP_OPT(CMS_EncapsulatedContentInfo, eContent, ASN1_OCTET_STRING_NDEF, 0)
  36. } static_ASN1_NDEF_SEQUENCE_END(CMS_EncapsulatedContentInfo)
  37. /* Minor tweak to operation: free up signer key, cert */
  38. static int cms_si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  39. void *exarg)
  40. {
  41. if (operation == ASN1_OP_FREE_POST) {
  42. CMS_SignerInfo *si = (CMS_SignerInfo *)*pval;
  43. EVP_PKEY_free(si->pkey);
  44. X509_free(si->signer);
  45. EVP_MD_CTX_free(si->mctx);
  46. }
  47. return 1;
  48. }
  49. ASN1_SEQUENCE_cb(CMS_SignerInfo, cms_si_cb) = {
  50. ASN1_EMBED(CMS_SignerInfo, version, INT32),
  51. ASN1_SIMPLE(CMS_SignerInfo, sid, CMS_SignerIdentifier),
  52. ASN1_SIMPLE(CMS_SignerInfo, digestAlgorithm, X509_ALGOR),
  53. ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, signedAttrs, X509_ATTRIBUTE, 0),
  54. ASN1_SIMPLE(CMS_SignerInfo, signatureAlgorithm, X509_ALGOR),
  55. ASN1_SIMPLE(CMS_SignerInfo, signature, ASN1_OCTET_STRING),
  56. ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, unsignedAttrs, X509_ATTRIBUTE, 1)
  57. } ASN1_SEQUENCE_END_cb(CMS_SignerInfo, CMS_SignerInfo)
  58. ASN1_SEQUENCE(CMS_OtherRevocationInfoFormat) = {
  59. ASN1_SIMPLE(CMS_OtherRevocationInfoFormat, otherRevInfoFormat, ASN1_OBJECT),
  60. ASN1_OPT(CMS_OtherRevocationInfoFormat, otherRevInfo, ASN1_ANY)
  61. } static_ASN1_SEQUENCE_END(CMS_OtherRevocationInfoFormat)
  62. ASN1_CHOICE(CMS_RevocationInfoChoice) = {
  63. ASN1_SIMPLE(CMS_RevocationInfoChoice, d.crl, X509_CRL),
  64. ASN1_IMP(CMS_RevocationInfoChoice, d.other, CMS_OtherRevocationInfoFormat, 1)
  65. } ASN1_CHOICE_END(CMS_RevocationInfoChoice)
  66. ASN1_NDEF_SEQUENCE(CMS_SignedData) = {
  67. ASN1_EMBED(CMS_SignedData, version, INT32),
  68. ASN1_SET_OF(CMS_SignedData, digestAlgorithms, X509_ALGOR),
  69. ASN1_SIMPLE(CMS_SignedData, encapContentInfo, CMS_EncapsulatedContentInfo),
  70. ASN1_IMP_SET_OF_OPT(CMS_SignedData, certificates, CMS_CertificateChoices, 0),
  71. ASN1_IMP_SET_OF_OPT(CMS_SignedData, crls, CMS_RevocationInfoChoice, 1),
  72. ASN1_SET_OF(CMS_SignedData, signerInfos, CMS_SignerInfo)
  73. } ASN1_NDEF_SEQUENCE_END(CMS_SignedData)
  74. ASN1_SEQUENCE(CMS_OriginatorInfo) = {
  75. ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, certificates, CMS_CertificateChoices, 0),
  76. ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, crls, CMS_RevocationInfoChoice, 1)
  77. } static_ASN1_SEQUENCE_END(CMS_OriginatorInfo)
  78. ASN1_NDEF_SEQUENCE(CMS_EncryptedContentInfo) = {
  79. ASN1_SIMPLE(CMS_EncryptedContentInfo, contentType, ASN1_OBJECT),
  80. ASN1_SIMPLE(CMS_EncryptedContentInfo, contentEncryptionAlgorithm, X509_ALGOR),
  81. ASN1_IMP_OPT(CMS_EncryptedContentInfo, encryptedContent, ASN1_OCTET_STRING_NDEF, 0)
  82. } static_ASN1_NDEF_SEQUENCE_END(CMS_EncryptedContentInfo)
  83. ASN1_SEQUENCE(CMS_KeyTransRecipientInfo) = {
  84. ASN1_EMBED(CMS_KeyTransRecipientInfo, version, INT32),
  85. ASN1_SIMPLE(CMS_KeyTransRecipientInfo, rid, CMS_SignerIdentifier),
  86. ASN1_SIMPLE(CMS_KeyTransRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
  87. ASN1_SIMPLE(CMS_KeyTransRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
  88. } ASN1_SEQUENCE_END(CMS_KeyTransRecipientInfo)
  89. ASN1_SEQUENCE(CMS_OtherKeyAttribute) = {
  90. ASN1_SIMPLE(CMS_OtherKeyAttribute, keyAttrId, ASN1_OBJECT),
  91. ASN1_OPT(CMS_OtherKeyAttribute, keyAttr, ASN1_ANY)
  92. } ASN1_SEQUENCE_END(CMS_OtherKeyAttribute)
  93. ASN1_SEQUENCE(CMS_RecipientKeyIdentifier) = {
  94. ASN1_SIMPLE(CMS_RecipientKeyIdentifier, subjectKeyIdentifier, ASN1_OCTET_STRING),
  95. ASN1_OPT(CMS_RecipientKeyIdentifier, date, ASN1_GENERALIZEDTIME),
  96. ASN1_OPT(CMS_RecipientKeyIdentifier, other, CMS_OtherKeyAttribute)
  97. } ASN1_SEQUENCE_END(CMS_RecipientKeyIdentifier)
  98. ASN1_CHOICE(CMS_KeyAgreeRecipientIdentifier) = {
  99. ASN1_SIMPLE(CMS_KeyAgreeRecipientIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
  100. ASN1_IMP(CMS_KeyAgreeRecipientIdentifier, d.rKeyId, CMS_RecipientKeyIdentifier, 0)
  101. } static_ASN1_CHOICE_END(CMS_KeyAgreeRecipientIdentifier)
  102. static int cms_rek_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  103. void *exarg)
  104. {
  105. CMS_RecipientEncryptedKey *rek = (CMS_RecipientEncryptedKey *)*pval;
  106. if (operation == ASN1_OP_FREE_POST) {
  107. EVP_PKEY_free(rek->pkey);
  108. }
  109. return 1;
  110. }
  111. ASN1_SEQUENCE_cb(CMS_RecipientEncryptedKey, cms_rek_cb) = {
  112. ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier),
  113. ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING)
  114. } ASN1_SEQUENCE_END_cb(CMS_RecipientEncryptedKey, CMS_RecipientEncryptedKey)
  115. ASN1_SEQUENCE(CMS_OriginatorPublicKey) = {
  116. ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR),
  117. ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING)
  118. } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey)
  119. ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = {
  120. ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber),
  121. ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0),
  122. ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1)
  123. } static_ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey)
  124. static int cms_kari_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  125. void *exarg)
  126. {
  127. CMS_KeyAgreeRecipientInfo *kari = (CMS_KeyAgreeRecipientInfo *)*pval;
  128. if (operation == ASN1_OP_NEW_POST) {
  129. kari->ctx = EVP_CIPHER_CTX_new();
  130. if (kari->ctx == NULL)
  131. return 0;
  132. EVP_CIPHER_CTX_set_flags(kari->ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
  133. kari->pctx = NULL;
  134. } else if (operation == ASN1_OP_FREE_POST) {
  135. EVP_PKEY_CTX_free(kari->pctx);
  136. EVP_CIPHER_CTX_free(kari->ctx);
  137. }
  138. return 1;
  139. }
  140. ASN1_SEQUENCE_cb(CMS_KeyAgreeRecipientInfo, cms_kari_cb) = {
  141. ASN1_EMBED(CMS_KeyAgreeRecipientInfo, version, INT32),
  142. ASN1_EXP(CMS_KeyAgreeRecipientInfo, originator, CMS_OriginatorIdentifierOrKey, 0),
  143. ASN1_EXP_OPT(CMS_KeyAgreeRecipientInfo, ukm, ASN1_OCTET_STRING, 1),
  144. ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
  145. ASN1_SEQUENCE_OF(CMS_KeyAgreeRecipientInfo, recipientEncryptedKeys, CMS_RecipientEncryptedKey)
  146. } ASN1_SEQUENCE_END_cb(CMS_KeyAgreeRecipientInfo, CMS_KeyAgreeRecipientInfo)
  147. ASN1_SEQUENCE(CMS_KEKIdentifier) = {
  148. ASN1_SIMPLE(CMS_KEKIdentifier, keyIdentifier, ASN1_OCTET_STRING),
  149. ASN1_OPT(CMS_KEKIdentifier, date, ASN1_GENERALIZEDTIME),
  150. ASN1_OPT(CMS_KEKIdentifier, other, CMS_OtherKeyAttribute)
  151. } static_ASN1_SEQUENCE_END(CMS_KEKIdentifier)
  152. ASN1_SEQUENCE(CMS_KEKRecipientInfo) = {
  153. ASN1_EMBED(CMS_KEKRecipientInfo, version, INT32),
  154. ASN1_SIMPLE(CMS_KEKRecipientInfo, kekid, CMS_KEKIdentifier),
  155. ASN1_SIMPLE(CMS_KEKRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
  156. ASN1_SIMPLE(CMS_KEKRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
  157. } ASN1_SEQUENCE_END(CMS_KEKRecipientInfo)
  158. ASN1_SEQUENCE(CMS_PasswordRecipientInfo) = {
  159. ASN1_EMBED(CMS_PasswordRecipientInfo, version, INT32),
  160. ASN1_IMP_OPT(CMS_PasswordRecipientInfo, keyDerivationAlgorithm, X509_ALGOR, 0),
  161. ASN1_SIMPLE(CMS_PasswordRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR),
  162. ASN1_SIMPLE(CMS_PasswordRecipientInfo, encryptedKey, ASN1_OCTET_STRING)
  163. } ASN1_SEQUENCE_END(CMS_PasswordRecipientInfo)
  164. ASN1_SEQUENCE(CMS_OtherRecipientInfo) = {
  165. ASN1_SIMPLE(CMS_OtherRecipientInfo, oriType, ASN1_OBJECT),
  166. ASN1_OPT(CMS_OtherRecipientInfo, oriValue, ASN1_ANY)
  167. } static_ASN1_SEQUENCE_END(CMS_OtherRecipientInfo)
  168. /* Free up RecipientInfo additional data */
  169. static int cms_ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  170. void *exarg)
  171. {
  172. if (operation == ASN1_OP_FREE_PRE) {
  173. CMS_RecipientInfo *ri = (CMS_RecipientInfo *)*pval;
  174. if (ri->type == CMS_RECIPINFO_TRANS) {
  175. CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
  176. EVP_PKEY_free(ktri->pkey);
  177. X509_free(ktri->recip);
  178. EVP_PKEY_CTX_free(ktri->pctx);
  179. } else if (ri->type == CMS_RECIPINFO_KEK) {
  180. CMS_KEKRecipientInfo *kekri = ri->d.kekri;
  181. OPENSSL_clear_free(kekri->key, kekri->keylen);
  182. } else if (ri->type == CMS_RECIPINFO_PASS) {
  183. CMS_PasswordRecipientInfo *pwri = ri->d.pwri;
  184. OPENSSL_clear_free(pwri->pass, pwri->passlen);
  185. }
  186. }
  187. return 1;
  188. }
  189. ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = {
  190. ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo),
  191. ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1),
  192. ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2),
  193. ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3),
  194. ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4)
  195. } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type)
  196. ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = {
  197. ASN1_EMBED(CMS_EnvelopedData, version, INT32),
  198. ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0),
  199. ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo),
  200. ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo),
  201. ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
  202. } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData)
  203. ASN1_NDEF_SEQUENCE(CMS_DigestedData) = {
  204. ASN1_EMBED(CMS_DigestedData, version, INT32),
  205. ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR),
  206. ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo),
  207. ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING)
  208. } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData)
  209. ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = {
  210. ASN1_EMBED(CMS_EncryptedData, version, INT32),
  211. ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo),
  212. ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1)
  213. } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData)
  214. ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = {
  215. ASN1_EMBED(CMS_AuthenticatedData, version, INT32),
  216. ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0),
  217. ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo),
  218. ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR),
  219. ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1),
  220. ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo),
  221. ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2),
  222. ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING),
  223. ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3)
  224. } static_ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData)
  225. ASN1_NDEF_SEQUENCE(CMS_CompressedData) = {
  226. ASN1_EMBED(CMS_CompressedData, version, INT32),
  227. ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR),
  228. ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo),
  229. } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData)
  230. /* This is the ANY DEFINED BY table for the top level ContentInfo structure */
  231. ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0);
  232. ASN1_ADB(CMS_ContentInfo) = {
  233. ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)),
  234. ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)),
  235. ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)),
  236. ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)),
  237. ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)),
  238. ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)),
  239. ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)),
  240. } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL);
  241. /* CMS streaming support */
  242. static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  243. void *exarg)
  244. {
  245. ASN1_STREAM_ARG *sarg = exarg;
  246. CMS_ContentInfo *cms = NULL;
  247. if (pval)
  248. cms = (CMS_ContentInfo *)*pval;
  249. else
  250. return 1;
  251. switch (operation) {
  252. case ASN1_OP_STREAM_PRE:
  253. if (CMS_stream(&sarg->boundary, cms) <= 0)
  254. return 0;
  255. /* fall thru */
  256. case ASN1_OP_DETACHED_PRE:
  257. sarg->ndef_bio = CMS_dataInit(cms, sarg->out);
  258. if (!sarg->ndef_bio)
  259. return 0;
  260. break;
  261. case ASN1_OP_STREAM_POST:
  262. case ASN1_OP_DETACHED_POST:
  263. if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0)
  264. return 0;
  265. break;
  266. }
  267. return 1;
  268. }
  269. ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = {
  270. ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT),
  271. ASN1_ADB_OBJECT(CMS_ContentInfo)
  272. } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo)
  273. /* Specials for signed attributes */
  274. /*
  275. * When signing attributes we want to reorder them to match the sorted
  276. * encoding.
  277. */
  278. ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) =
  279. ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE)
  280. ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign)
  281. /*
  282. * When verifying attributes we need to use the received order. So we use
  283. * SEQUENCE OF and tag it to SET OF
  284. */
  285. ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) =
  286. ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
  287. V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE)
  288. ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify)
  289. ASN1_CHOICE(CMS_ReceiptsFrom) = {
  290. ASN1_IMP_EMBED(CMS_ReceiptsFrom, d.allOrFirstTier, INT32, 0),
  291. ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1)
  292. } static_ASN1_CHOICE_END(CMS_ReceiptsFrom)
  293. ASN1_SEQUENCE(CMS_ReceiptRequest) = {
  294. ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING),
  295. ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom),
  296. ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES)
  297. } ASN1_SEQUENCE_END(CMS_ReceiptRequest)
  298. ASN1_SEQUENCE(CMS_Receipt) = {
  299. ASN1_EMBED(CMS_Receipt, version, INT32),
  300. ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT),
  301. ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING),
  302. ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING)
  303. } ASN1_SEQUENCE_END(CMS_Receipt)
  304. /*
  305. * Utilities to encode the CMS_SharedInfo structure used during key
  306. * derivation.
  307. */
  308. typedef struct {
  309. X509_ALGOR *keyInfo;
  310. ASN1_OCTET_STRING *entityUInfo;
  311. ASN1_OCTET_STRING *suppPubInfo;
  312. } CMS_SharedInfo;
  313. ASN1_SEQUENCE(CMS_SharedInfo) = {
  314. ASN1_SIMPLE(CMS_SharedInfo, keyInfo, X509_ALGOR),
  315. ASN1_EXP_OPT(CMS_SharedInfo, entityUInfo, ASN1_OCTET_STRING, 0),
  316. ASN1_EXP_OPT(CMS_SharedInfo, suppPubInfo, ASN1_OCTET_STRING, 2),
  317. } static_ASN1_SEQUENCE_END(CMS_SharedInfo)
  318. int CMS_SharedInfo_encode(unsigned char **pder, X509_ALGOR *kekalg,
  319. ASN1_OCTET_STRING *ukm, int keylen)
  320. {
  321. union {
  322. CMS_SharedInfo *pecsi;
  323. ASN1_VALUE *a;
  324. } intsi = {
  325. NULL
  326. };
  327. ASN1_OCTET_STRING oklen;
  328. unsigned char kl[4];
  329. CMS_SharedInfo ecsi;
  330. keylen <<= 3;
  331. kl[0] = (keylen >> 24) & 0xff;
  332. kl[1] = (keylen >> 16) & 0xff;
  333. kl[2] = (keylen >> 8) & 0xff;
  334. kl[3] = keylen & 0xff;
  335. oklen.length = 4;
  336. oklen.data = kl;
  337. oklen.type = V_ASN1_OCTET_STRING;
  338. oklen.flags = 0;
  339. ecsi.keyInfo = kekalg;
  340. ecsi.entityUInfo = ukm;
  341. ecsi.suppPubInfo = &oklen;
  342. intsi.pecsi = &ecsi;
  343. return ASN1_item_i2d(intsi.a, pder, ASN1_ITEM_rptr(CMS_SharedInfo));
  344. }