crypto/pkcs7/pk7_lib.c

   1 /* crypto/pkcs7/pk7_lib.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include "objects.h"
  62 #include "x509.h"
  63
  64 long PKCS7_ctrl(p7,cmd,larg,parg)
  65 PKCS7 *p7;
  66 int cmd;
  67 long larg;
  68 char *parg;
  69         {
  70         int nid;
  71         long ret;
  72
  73         nid=OBJ_obj2nid(p7->type);
  74
  75         switch (cmd)
  76                 {
  77         case PKCS7_OP_SET_DETACHED_SIGNATURE:
  78                 if (nid == NID_pkcs7_signed)
  79                         {
  80                         ret=p7->detached=(int)larg;
  81                         }
  82                 else
  83                         {
  84                         PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
  85                         ret=0;
  86                         }
  87                 break;
  88         case PKCS7_OP_GET_DETACHED_SIGNATURE:
  89                 if (nid == NID_pkcs7_signed)
  90                         {
  91                         ret=p7->detached;
  92                         }
  93                 else
  94                         {
  95                         PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
  96                         ret=0;
  97                         }
  98
  99                 break;
 100         default:
 101                 abort();
 102                 }
 103         return(ret);
 104         }
 105
 106 int PKCS7_content_new(p7,type)
 107 PKCS7 *p7;
 108 int type;
 109         {
 110         PKCS7 *ret=NULL;
 111
 112         if ((ret=PKCS7_new()) == NULL) goto err;
 113         if (!PKCS7_set_type(ret,type)) goto err;
 114         if (!PKCS7_set_content(p7,ret)) goto err;
 115
 116         return(1);
 117 err:
 118         if (ret != NULL) PKCS7_free(ret);
 119         return(0);
 120         }
 121
 122 int PKCS7_set_content(p7,p7_data)
 123 PKCS7 *p7;
 124 PKCS7 *p7_data;
 125         {
 126         int i;
 127
 128         i=OBJ_obj2nid(p7->type);
 129         switch (i)
 130                 {
 131         case NID_pkcs7_signed:
 132                 if (p7->d.sign->contents != NULL)
 133                         PKCS7_content_free(p7->d.sign->contents);
 134                 p7->d.sign->contents=p7_data;
 135                 break;
 136         case NID_pkcs7_digest:
 137         case NID_pkcs7_data:
 138         case NID_pkcs7_enveloped:
 139         case NID_pkcs7_signedAndEnveloped:
 140         case NID_pkcs7_encrypted:
 141         default:
 142                 PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
 143                 goto err;
 144                 }
 145         return(1);
 146 err:
 147         return(0);
 148         }
 149
 150 int PKCS7_set_type(p7,type)
 151 PKCS7 *p7;
 152 int type;
 153         {
 154         ASN1_OBJECT *obj;
 155
 156         PKCS7_content_free(p7);
 157         obj=OBJ_nid2obj(type); /* will not fail */
 158
 159         switch (type)
 160                 {
 161         case NID_pkcs7_signed:
 162                 p7->type=obj;
 163                 if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL)
 164                         goto err;
 165                 ASN1_INTEGER_set(p7->d.sign->version,1);
 166                 break;
 167         case NID_pkcs7_data:
 168                 p7->type=obj;
 169                 if ((p7->d.data=ASN1_OCTET_STRING_new()) == NULL)
 170                         goto err;
 171                 break;
 172         case NID_pkcs7_signedAndEnveloped:
 173                 p7->type=obj;
 174                 if ((p7->d.signed_and_enveloped=PKCS7_SIGN_ENVELOPE_new())
 175                         == NULL)
 176                         goto err;
 177                 ASN1_INTEGER_set(p7->d.sign->version,1);
 178                 break;
 179         case NID_pkcs7_digest:
 180         case NID_pkcs7_enveloped:
 181         case NID_pkcs7_encrypted:
 182         default:
 183                 PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
 184                 goto err;
 185                 }
 186         return(1);
 187 err:
 188         return(0);
 189         }
 190
 191 int PKCS7_add_signer(p7,psi)
 192 PKCS7 *p7;
 193 PKCS7_SIGNER_INFO *psi;
 194         {
 195         int i,j,nid;
 196         X509_ALGOR *alg;
 197         STACK *signer_sk;
 198         STACK *md_sk;
 199
 200         i=OBJ_obj2nid(p7->type);
 201         switch (i)
 202                 {
 203         case NID_pkcs7_signed:
 204                 signer_sk=      p7->d.sign->signer_info;
 205                 md_sk=          p7->d.sign->md_algs;
 206                 break;
 207         case NID_pkcs7_signedAndEnveloped:
 208                 signer_sk=      p7->d.signed_and_enveloped->signer_info;
 209                 md_sk=          p7->d.signed_and_enveloped->md_algs;
 210                 break;
 211         default:
 212                 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE);
 213                 return(0);
 214                 }
 215
 216         nid=OBJ_obj2nid(psi->digest_alg->algorithm);
 217
 218         /* If the digest is not currently listed, add it */
 219         j=0;
 220         for (i=0; i<sk_num(md_sk); i++)
 221                 {
 222                 alg=(X509_ALGOR *)sk_value(md_sk,i);
 223                 if (OBJ_obj2nid(alg->algorithm) == nid)
 224                         {
 225                         j=1;
 226                         break;
 227                         }
 228                 }
 229         if (!j) /* we need to add another algorithm */
 230                 {
 231                 alg=X509_ALGOR_new();
 232                 alg->algorithm=OBJ_nid2obj(nid);
 233                 sk_push(md_sk,(char *)alg);
 234                 }
 235
 236         sk_push(signer_sk,(char *)psi);
 237         return(1);
 238         }
 239
 240 int PKCS7_add_certificate(p7,x509)
 241 PKCS7 *p7;
 242 X509 *x509;
 243         {
 244         int i;
 245         STACK **sk;
 246
 247         i=OBJ_obj2nid(p7->type);
 248         switch (i)
 249                 {
 250         case NID_pkcs7_signed:
 251                 sk= &(p7->d.sign->cert);
 252                 break;
 253         case NID_pkcs7_signedAndEnveloped:
 254                 sk= &(p7->d.signed_and_enveloped->cert);
 255                 break;
 256         default:
 257                 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,PKCS7_R_WRONG_CONTENT_TYPE);
 258                 return(0);
 259                 }
 260
 261         if (*sk == NULL)
 262                 *sk=sk_new_null();
 263         CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
 264         sk_push(*sk,(char *)x509);
 265         return(1);
 266         }
 267
 268 int PKCS7_add_crl(p7,crl)
 269 PKCS7 *p7;
 270 X509_CRL *crl;
 271         {
 272         int i;
 273         STACK **sk;
 274
 275         i=OBJ_obj2nid(p7->type);
 276         switch (i)
 277                 {
 278         case NID_pkcs7_signed:
 279                 sk= &(p7->d.sign->crl);
 280                 break;
 281         case NID_pkcs7_signedAndEnveloped:
 282                 sk= &(p7->d.signed_and_enveloped->crl);
 283                 break;
 284         default:
 285                 PKCS7err(PKCS7_F_PKCS7_ADD_CRL,PKCS7_R_WRONG_CONTENT_TYPE);
 286                 return(0);
 287                 }
 288
 289         if (*sk == NULL)
 290                 *sk=sk_new_null();
 291
 292         CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL);
 293         sk_push(*sk,(char *)crl);
 294         return(1);
 295         }
 296
 297 int PKCS7_SIGNER_INFO_set(p7i,x509,pkey,dgst)
 298 PKCS7_SIGNER_INFO *p7i;
 299 X509 *x509;
 300 EVP_PKEY *pkey;
 301 EVP_MD *dgst;
 302         {
 303         /* We now need to add another PKCS7_SIGNER_INFO entry */
 304         ASN1_INTEGER_set(p7i->version,1);
 305         X509_NAME_set(&p7i->issuer_and_serial->issuer,
 306                 X509_get_issuer_name(x509));
 307
 308         /* because ASN1_INTEGER_set is used to set a 'long' we will do
 309          * things the ugly way. */
 310         ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
 311         p7i->issuer_and_serial->serial=
 312                 ASN1_INTEGER_dup(X509_get_serialNumber(x509));
 313
 314         /* lets keep the pkey around for a while */
 315         CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
 316         p7i->pkey=pkey;
 317
 318         /* Set the algorithms */
 319         p7i->digest_alg->algorithm=OBJ_nid2obj(EVP_MD_type(dgst));
 320         p7i->digest_enc_alg->algorithm=OBJ_nid2obj(EVP_MD_pkey_type(dgst));
 321
 322 #if 1
 323         if (p7i->digest_enc_alg->parameter != NULL)
 324                 ASN1_TYPE_free(p7i->digest_enc_alg->parameter);
 325         if ((p7i->digest_enc_alg->parameter=ASN1_TYPE_new()) == NULL)
 326                 goto err;
 327         p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
 328 #endif
 329
 330         return(1);
 331 err:
 332         return(0);
 333         }
 334
 335 PKCS7_SIGNER_INFO *PKCS7_add_signature(p7,x509,pkey,dgst)
 336 PKCS7 *p7;
 337 X509 *x509;
 338 EVP_PKEY *pkey;
 339 EVP_MD *dgst;
 340         {
 341         PKCS7_SIGNER_INFO *si;
 342
 343         if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err;
 344         if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err;
 345         if (!PKCS7_add_signer(p7,si)) goto err;
 346         return(si);
 347 err:
 348         return(NULL);
 349         }
 350
 351 STACK *PKCS7_get_signer_info(p7)
 352 PKCS7 *p7;
 353         {
 354         if (PKCS7_type_is_signed(p7))
 355                 {
 356                 return(p7->d.sign->signer_info);
 357                 }
 358         else
 359                 return(NULL);
 360         }
 361
 362 PKCS7_RECIP_INFO *PKCS7_add_recipient(p7,x509)
 363 PKCS7 *p7;
 364 X509 *x509;
 365         {
 366         PKCS7_RECIP_INFO *ri;
 367
 368         if ((ri=PKCS7_RECIP_INFO_new()) == NULL) goto err;
 369         if (!PKCS7_RECIP_INFO_set(ri,x509)) goto err;
 370         if (!PKCS7_add_recipient_info(p7,ri)) goto err;
 371         return(ri);
 372 err:
 373         return(NULL);
 374         }
 375
 376 int PKCS7_add_recipient_info(p7,ri)
 377 PKCS7 *p7;
 378 PKCS7_RECIP_INFO *ri;
 379         {
 380         int i;
 381         STACK *sk;
 382
 383         i=OBJ_obj2nid(p7->type);
 384         switch (i)
 385                 {
 386         case NID_pkcs7_signedAndEnveloped:
 387                 sk=     p7->d.signed_and_enveloped->recipientinfo;
 388                 break;
 389         default:
 390                 PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,PKCS7_R_WRONG_CONTENT_TYPE);
 391                 return(0);
 392                 }
 393
 394         sk_push(sk,(char *)ri);
 395         return(1);
 396         }
 397
 398 int PKCS7_RECIP_INFO_set(p7i,x509)
 399 PKCS7_RECIP_INFO *p7i;
 400 X509 *x509;
 401         {
 402         ASN1_INTEGER_set(p7i->version,0);
 403         X509_NAME_set(&p7i->issuer_and_serial->issuer,
 404                 X509_get_issuer_name(x509));
 405
 406         ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
 407         p7i->issuer_and_serial->serial=
 408                 ASN1_INTEGER_dup(X509_get_serialNumber(x509));
 409
 410         CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
 411         p7i->cert=x509;
 412
 413         return(1);
 414         }
 415
 416 X509 *PKCS7_cert_from_signer_info(p7,si)
 417 PKCS7 *p7;
 418 PKCS7_SIGNER_INFO *si;
 419         {
 420         if (PKCS7_type_is_signed(p7))
 421                 return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
 422                         si->issuer_and_serial->issuer,
 423                         si->issuer_and_serial->serial));
 424         else
 425                 return(NULL);
 426         }
 427
 428 int PKCS7_set_cipher(p7,cipher)
 429 PKCS7 *p7;
 430 EVP_CIPHER *cipher;
 431         {
 432         int i;
 433         PKCS7_ENC_CONTENT *ec;
 434
 435         i=OBJ_obj2nid(p7->type);
 436         switch (i)
 437                 {
 438         case NID_pkcs7_signedAndEnveloped:
 439                 ec=p7->d.signed_and_enveloped->enc_data;
 440                 break;
 441         default:
 442                 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_WRONG_CONTENT_TYPE);
 443                 return(0);
 444                 }
 445
 446         ec->algorithm->algorithm=OBJ_nid2obj(EVP_CIPHER_nid(cipher));
 447         return(ec->algorithm->algorithm != NULL);
 448         }
 449