pk7_asn1.c 9.2 KB

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  1. /* pk7_asn.c */
  2. /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
  3. * project 2000.
  4. */
  5. /* ====================================================================
  6. * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. *
  12. * 1. Redistributions of source code must retain the above copyright
  13. * notice, this list of conditions and the following disclaimer.
  14. *
  15. * 2. Redistributions in binary form must reproduce the above copyright
  16. * notice, this list of conditions and the following disclaimer in
  17. * the documentation and/or other materials provided with the
  18. * distribution.
  19. *
  20. * 3. All advertising materials mentioning features or use of this
  21. * software must display the following acknowledgment:
  22. * "This product includes software developed by the OpenSSL Project
  23. * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24. *
  25. * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26. * endorse or promote products derived from this software without
  27. * prior written permission. For written permission, please contact
  28. * licensing@OpenSSL.org.
  29. *
  30. * 5. Products derived from this software may not be called "OpenSSL"
  31. * nor may "OpenSSL" appear in their names without prior written
  32. * permission of the OpenSSL Project.
  33. *
  34. * 6. Redistributions of any form whatsoever must retain the following
  35. * acknowledgment:
  36. * "This product includes software developed by the OpenSSL Project
  37. * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38. *
  39. * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40. * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43. * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48. * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50. * OF THE POSSIBILITY OF SUCH DAMAGE.
  51. * ====================================================================
  52. *
  53. * This product includes cryptographic software written by Eric Young
  54. * (eay@cryptsoft.com). This product includes software written by Tim
  55. * Hudson (tjh@cryptsoft.com).
  56. *
  57. */
  58. #include <stdio.h>
  59. #include "cryptlib.h"
  60. #include <openssl/asn1t.h>
  61. #include <openssl/pkcs7.h>
  62. #include <openssl/x509.h>
  63. /* PKCS#7 ASN1 module */
  64. /* This is the ANY DEFINED BY table for the top level PKCS#7 structure */
  65. ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0);
  66. ASN1_ADB(PKCS7) = {
  67. ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)),
  68. ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)),
  69. ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)),
  70. ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)),
  71. ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)),
  72. ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0))
  73. } ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL);
  74. /* PKCS#7 streaming support */
  75. static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  76. void *exarg)
  77. {
  78. ASN1_STREAM_ARG *sarg = exarg;
  79. PKCS7 *p7;
  80. if (pval)
  81. p7 = (PKCS7 *)*pval;
  82. else
  83. p7 = NULL;
  84. switch(operation)
  85. {
  86. case ASN1_OP_STREAM_PRE:
  87. if (PKCS7_stream(&sarg->boundary, p7) <= 0)
  88. return 0;
  89. case ASN1_OP_DETACHED_PRE:
  90. sarg->ndef_bio = PKCS7_dataInit(p7, sarg->out);
  91. if (!sarg->ndef_bio)
  92. return 0;
  93. break;
  94. case ASN1_OP_STREAM_POST:
  95. case ASN1_OP_DETACHED_POST:
  96. if (PKCS7_dataFinal(p7, sarg->ndef_bio) <= 0)
  97. return 0;
  98. break;
  99. }
  100. return 1;
  101. }
  102. ASN1_NDEF_SEQUENCE_cb(PKCS7, pk7_cb) = {
  103. ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT),
  104. ASN1_ADB_OBJECT(PKCS7)
  105. }ASN1_NDEF_SEQUENCE_END_cb(PKCS7, PKCS7)
  106. IMPLEMENT_ASN1_FUNCTIONS(PKCS7)
  107. IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7)
  108. IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7)
  109. ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = {
  110. ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER),
  111. ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR),
  112. ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7),
  113. ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0),
  114. ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1),
  115. ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO)
  116. } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED)
  117. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED)
  118. /* Minor tweak to operation: free up EVP_PKEY */
  119. static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  120. void *exarg)
  121. {
  122. if(operation == ASN1_OP_FREE_POST) {
  123. PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval;
  124. EVP_PKEY_free(si->pkey);
  125. }
  126. return 1;
  127. }
  128. ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = {
  129. ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER),
  130. ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
  131. ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR),
  132. /* NB this should be a SET OF but we use a SEQUENCE OF so the
  133. * original order * is retained when the structure is reencoded.
  134. * Since the attributes are implicitly tagged this will not affect
  135. * the encoding.
  136. */
  137. ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0),
  138. ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR),
  139. ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING),
  140. ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1)
  141. } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO)
  142. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO)
  143. ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = {
  144. ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME),
  145. ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER)
  146. } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL)
  147. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL)
  148. ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = {
  149. ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER),
  150. ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
  151. ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT)
  152. } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE)
  153. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE)
  154. /* Minor tweak to operation: free up X509 */
  155. static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  156. void *exarg)
  157. {
  158. if(operation == ASN1_OP_FREE_POST) {
  159. PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval;
  160. X509_free(ri->cert);
  161. }
  162. return 1;
  163. }
  164. ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = {
  165. ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER),
  166. ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
  167. ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR),
  168. ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING)
  169. } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO)
  170. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO)
  171. ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = {
  172. ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT),
  173. ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR),
  174. ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0)
  175. } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT)
  176. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT)
  177. ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = {
  178. ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER),
  179. ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
  180. ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR),
  181. ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT),
  182. ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0),
  183. ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1),
  184. ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO)
  185. } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE)
  186. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE)
  187. ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = {
  188. ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER),
  189. ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT)
  190. } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT)
  191. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT)
  192. ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = {
  193. ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER),
  194. ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR),
  195. ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7),
  196. ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING)
  197. } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST)
  198. IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST)
  199. /* Specials for authenticated attributes */
  200. /* When signing attributes we want to reorder them to match the sorted
  201. * encoding.
  202. */
  203. ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) =
  204. ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
  205. ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN)
  206. /* When verifying attributes we need to use the received order. So
  207. * we use SEQUENCE OF and tag it to SET OF
  208. */
  209. ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) =
  210. ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
  211. V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
  212. ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY)
  213. IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7)