apps/pkeyutl.c

   1 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   2  * project 2006.
   3  */
   4 /* ====================================================================
   5  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  *
  19  * 3. All advertising materials mentioning features or use of this
  20  *    software must display the following acknowledgment:
  21  *    "This product includes software developed by the OpenSSL Project
  22  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  23  *
  24  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  25  *    endorse or promote products derived from this software without
  26  *    prior written permission. For written permission, please contact
  27  *    licensing@OpenSSL.org.
  28  *
  29  * 5. Products derived from this software may not be called "OpenSSL"
  30  *    nor may "OpenSSL" appear in their names without prior written
  31  *    permission of the OpenSSL Project.
  32  *
  33  * 6. Redistributions of any form whatsoever must retain the following
  34  *    acknowledgment:
  35  *    "This product includes software developed by the OpenSSL Project
  36  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  39  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  40  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  41  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  42  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  43  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  44  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  45  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  46  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  47  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  48  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  49  * OF THE POSSIBILITY OF SUCH DAMAGE.
  50  * ====================================================================
  51  *
  52  * This product includes cryptographic software written by Eric Young
  53  * (eay@cryptsoft.com).  This product includes software written by Tim
  54  * Hudson (tjh@cryptsoft.com).
  55  *
  56  */
  57
  58
  59 #include "apps.h"
  60 #include <string.h>
  61 #include <openssl/err.h>
  62 #include <openssl/pem.h>
  63 #include <openssl/evp.h>
  64
  65 #define KEY_PRIVKEY     1
  66 #define KEY_PUBKEY      2
  67 #define KEY_CERT        3
  68
  69 static void usage(void);
  70
  71 #undef PROG
  72
  73 #define PROG pkeyutl_main
  74
  75 static EVP_PKEY_CTX *init_ctx(int *pkeysize,
  76                                 char *keyfile, int keyform, int key_type,
  77                                 char *passargin, int pkey_op, ENGINE *e);
  78
  79 static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
  80                                                         const char *file);
  81
  82 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
  83                 unsigned char *out, size_t *poutlen,
  84                 unsigned char *in, size_t inlen);
  85
  86 int MAIN(int argc, char **);
  87
  88 int MAIN(int argc, char **argv)
  89 {
  90         BIO *in = NULL, *out = NULL;
  91         char *infile = NULL, *outfile = NULL, *sigfile = NULL;
  92         ENGINE *e = NULL;
  93         int pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
  94         int keyform = FORMAT_PEM, peerform = FORMAT_PEM;
  95         char badarg = 0, rev = 0;
  96         char hexdump = 0, asn1parse = 0;
  97         EVP_PKEY_CTX *ctx = NULL;
  98         char *passargin = NULL;
  99         int keysize = -1;
 100
 101         unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
 102         size_t buf_outlen;
 103         int buf_inlen = 0, siglen = -1;
 104
 105         int ret = 1, rv = -1;
 106
 107         argc--;
 108         argv++;
 109
 110         if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 111
 112         if (!load_config(bio_err, NULL))
 113                 goto end;
 114         ERR_load_crypto_strings();
 115         OpenSSL_add_all_algorithms();
 116
 117         while(argc >= 1)
 118                 {
 119                 if (!strcmp(*argv,"-in"))
 120                         {
 121                         if (--argc < 1) badarg = 1;
 122                         else infile= *(++argv);
 123                         }
 124                 else if (!strcmp(*argv,"-out"))
 125                         {
 126                         if (--argc < 1) badarg = 1;
 127                         else outfile= *(++argv);
 128                         }
 129                 else if (!strcmp(*argv,"-sigfile"))
 130                         {
 131                         if (--argc < 1) badarg = 1;
 132                         else sigfile= *(++argv);
 133                         }
 134                 else if(!strcmp(*argv, "-inkey"))
 135                         {
 136                         if (--argc < 1)
 137                                 badarg = 1;
 138                         else
 139                                 {
 140                                 ctx = init_ctx(&keysize,
 141                                                 *(++argv), keyform, key_type,
 142                                                 passargin, pkey_op, e);
 143                                 if (!ctx)
 144                                         {
 145                                         BIO_puts(bio_err,
 146                                                 "Error initializing context\n");
 147                                         ERR_print_errors(bio_err);
 148                                         badarg = 1;
 149                                         }
 150                                 }
 151                         }
 152                 else if (!strcmp(*argv,"-peerkey"))
 153                         {
 154                         if (--argc < 1)
 155                                 badarg = 1;
 156                         else if (!setup_peer(bio_err, ctx, peerform, *(++argv)))
 157                                 badarg = 1;
 158                         }
 159                 else if (!strcmp(*argv,"-passin"))
 160                         {
 161                         if (--argc < 1) badarg = 1;
 162                         else passargin= *(++argv);
 163                         }
 164                 else if (strcmp(*argv,"-peerform") == 0)
 165                         {
 166                         if (--argc < 1) badarg = 1;
 167                         else peerform=str2fmt(*(++argv));
 168                         }
 169                 else if (strcmp(*argv,"-keyform") == 0)
 170                         {
 171                         if (--argc < 1) badarg = 1;
 172                         else keyform=str2fmt(*(++argv));
 173                         }
 174 #ifndef OPENSSL_NO_ENGINE
 175                 else if(!strcmp(*argv, "-engine"))
 176                         {
 177                         if (--argc < 1)
 178                                 badarg = 1;
 179                         else
 180                                 e = setup_engine(bio_err, *(++argv), 0);
 181                         }
 182 #endif
 183                 else if(!strcmp(*argv, "-pubin"))
 184                         key_type = KEY_PUBKEY;
 185                 else if(!strcmp(*argv, "-certin"))
 186                         key_type = KEY_CERT;
 187                 else if(!strcmp(*argv, "-asn1parse"))
 188                         asn1parse = 1;
 189                 else if(!strcmp(*argv, "-hexdump"))
 190                         hexdump = 1;
 191                 else if(!strcmp(*argv, "-sign"))
 192                         pkey_op = EVP_PKEY_OP_SIGN;
 193                 else if(!strcmp(*argv, "-verify"))
 194                         pkey_op = EVP_PKEY_OP_VERIFY;
 195                 else if(!strcmp(*argv, "-verifyrecover"))
 196                         pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 197                 else if(!strcmp(*argv, "-rev"))
 198                         rev = 1;
 199                 else if(!strcmp(*argv, "-encrypt"))
 200                         pkey_op = EVP_PKEY_OP_ENCRYPT;
 201                 else if(!strcmp(*argv, "-decrypt"))
 202                         pkey_op = EVP_PKEY_OP_DECRYPT;
 203                 else if(!strcmp(*argv, "-derive"))
 204                         pkey_op = EVP_PKEY_OP_DERIVE;
 205                 else if (strcmp(*argv,"-pkeyopt") == 0)
 206                         {
 207                         if (--argc < 1)
 208                                 badarg = 1;
 209                         else if (!ctx)
 210                                 {
 211                                 BIO_puts(bio_err,
 212                                         "-pkeyopt command before -inkey\n");
 213                                 badarg = 1;
 214                                 }
 215                         else if (pkey_ctrl_string(ctx, *(++argv)) <= 0)
 216                                 {
 217                                 BIO_puts(bio_err, "parameter setting error\n");
 218                                 ERR_print_errors(bio_err);
 219                                 goto end;
 220                                 }
 221                         }
 222                 else badarg = 1;
 223                 if(badarg)
 224                         {
 225                         usage();
 226                         goto end;
 227                         }
 228                 argc--;
 229                 argv++;
 230                 }
 231
 232         if (!ctx)
 233                 {
 234                 usage();
 235                 goto end;
 236                 }
 237
 238         if (sigfile && (pkey_op != EVP_PKEY_OP_VERIFY))
 239                 {
 240                 BIO_puts(bio_err, "Signature file specified for non verify\n");
 241                 goto end;
 242                 }
 243
 244         if (!sigfile && (pkey_op == EVP_PKEY_OP_VERIFY))
 245                 {
 246                 BIO_puts(bio_err, "No signature file specified for verify\n");
 247                 goto end;
 248                 }
 249
 250 /* FIXME: seed PRNG only if needed */
 251         app_RAND_load_file(NULL, bio_err, 0);
 252
 253         if (pkey_op != EVP_PKEY_OP_DERIVE)
 254                 {
 255                 if(infile)
 256                         {
 257                         if(!(in = BIO_new_file(infile, "rb")))
 258                                 {
 259                                 BIO_puts(bio_err,
 260                                         "Error Opening Input File\n");
 261                                 ERR_print_errors(bio_err);
 262                                 goto end;
 263                                 }
 264                         }
 265                 else
 266                         in = BIO_new_fp(stdin, BIO_NOCLOSE);
 267                 }
 268
 269         if(outfile)
 270                 {
 271                 if(!(out = BIO_new_file(outfile, "wb")))
 272                         {
 273                         BIO_printf(bio_err, "Error Creating Output File\n");
 274                         ERR_print_errors(bio_err);
 275                         goto end;
 276                         }
 277                 }
 278         else
 279                 {
 280                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 281 #ifdef OPENSSL_SYS_VMS
 282                 {
 283                     BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 284                     out = BIO_push(tmpbio, out);
 285                 }
 286 #endif
 287         }
 288
 289         if (sigfile)
 290                 {
 291                 BIO *sigbio = BIO_new_file(sigfile, "rb");
 292                 if (!sigbio)
 293                         {
 294                         BIO_printf(bio_err, "Can't open signature file %s\n",
 295                                                                 sigfile);
 296                         goto end;
 297                         }
 298                 siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 299                 BIO_free(sigbio);
 300                 if (siglen <= 0)
 301                         {
 302                         BIO_printf(bio_err, "Error reading signature data\n");
 303                         goto end;
 304                         }
 305                 }
 306
 307         if (in)
 308                 {
 309                 /* Read the input data */
 310                 buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 311                 if(buf_inlen <= 0)
 312                         {
 313                         BIO_printf(bio_err, "Error reading input Data\n");
 314                         exit(1);
 315                         }
 316                 if(rev)
 317                         {
 318                         size_t i;
 319                         unsigned char ctmp;
 320                         size_t l = (size_t)buf_inlen;
 321                         for(i = 0; i < l/2; i++)
 322                                 {
 323                                 ctmp = buf_in[i];
 324                                 buf_in[i] = buf_in[l - 1 - i];
 325                                 buf_in[l - 1 - i] = ctmp;
 326                                 }
 327                         }
 328                 }
 329
 330         if(pkey_op == EVP_PKEY_OP_VERIFY)
 331                 {
 332                 rv  = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 333                                       buf_in, (size_t)buf_inlen);
 334                 if (rv == 0)
 335                         BIO_puts(out, "Signature Verification Failure\n");
 336                 else if (rv == 1)
 337                         BIO_puts(out, "Signature Verified Successfully\n");
 338                 if (rv >= 0)
 339                         goto end;
 340                 }
 341         else
 342                 {
 343                 rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 344                               buf_in, (size_t)buf_inlen);
 345                 if (rv > 0)
 346                         {
 347                         buf_out = OPENSSL_malloc(buf_outlen);
 348                         if (!buf_out)
 349                                 rv = -1;
 350                         else
 351                                 rv = do_keyop(ctx, pkey_op,
 352                                                 buf_out, (size_t *)&buf_outlen,
 353                                                 buf_in, (size_t)buf_inlen);
 354                         }
 355                 }
 356
 357         if(rv <= 0)
 358                 {
 359                 BIO_printf(bio_err, "Public Key operation error\n");
 360                 ERR_print_errors(bio_err);
 361                 goto end;
 362                 }
 363         ret = 0;
 364         if(asn1parse)
 365                 {
 366                 if(!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 367                         ERR_print_errors(bio_err);
 368                 }
 369         else if(hexdump)
 370                 BIO_dump(out, (char *)buf_out, buf_outlen);
 371         else
 372                 BIO_write(out, buf_out, buf_outlen);
 373
 374         end:
 375         if (ctx)
 376                 EVP_PKEY_CTX_free(ctx);
 377         BIO_free(in);
 378         BIO_free_all(out);
 379         if (buf_in)
 380                 OPENSSL_free(buf_in);
 381         if (buf_out)
 382                 OPENSSL_free(buf_out);
 383         if (sig)
 384                 OPENSSL_free(sig);
 385         return ret;
 386 }
 387
 388 static void usage()
 389 {
 390         BIO_printf(bio_err, "Usage: pkeyutl [options]\n");
 391         BIO_printf(bio_err, "-in file        input file\n");
 392         BIO_printf(bio_err, "-out file       output file\n");
 393         BIO_printf(bio_err, "-sigfile file signature file (verify operation only)\n");
 394         BIO_printf(bio_err, "-inkey file     input key\n");
 395         BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
 396         BIO_printf(bio_err, "-pubin          input is a public key\n");
 397         BIO_printf(bio_err, "-certin         input is a certificate carrying a public key\n");
 398         BIO_printf(bio_err, "-pkeyopt X:Y    public key options\n");
 399         BIO_printf(bio_err, "-sign           sign with private key\n");
 400         BIO_printf(bio_err, "-verify         verify with public key\n");
 401         BIO_printf(bio_err, "-verifyrecover  verify with public key, recover original data\n");
 402         BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
 403         BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
 404         BIO_printf(bio_err, "-derive         derive shared secret\n");
 405         BIO_printf(bio_err, "-hexdump        hex dump output\n");
 406 #ifndef OPENSSL_NO_ENGINE
 407         BIO_printf(bio_err, "-engine e       use engine e, possibly a hardware device.\n");
 408 #endif
 409         BIO_printf(bio_err, "-passin arg     pass phrase source\n");
 410
 411 }
 412
 413 static EVP_PKEY_CTX *init_ctx(int *pkeysize,
 414                                 char *keyfile, int keyform, int key_type,
 415                                 char *passargin, int pkey_op, ENGINE *e)
 416         {
 417         EVP_PKEY *pkey = NULL;
 418         EVP_PKEY_CTX *ctx = NULL;
 419         char *passin = NULL;
 420         int rv = -1;
 421         X509 *x;
 422         if(((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 423                 || (pkey_op == EVP_PKEY_OP_DERIVE))
 424                 && (key_type != KEY_PRIVKEY))
 425                 {
 426                 BIO_printf(bio_err, "A private key is needed for this operation\n");
 427                 goto end;
 428                 }
 429         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
 430                 {
 431                 BIO_printf(bio_err, "Error getting password\n");
 432                 goto end;
 433                 }
 434         switch(key_type)
 435                 {
 436                 case KEY_PRIVKEY:
 437                 pkey = load_key(bio_err, keyfile, keyform, 0,
 438                         passin, e, "Private Key");
 439                 break;
 440
 441                 case KEY_PUBKEY:
 442                 pkey = load_pubkey(bio_err, keyfile, keyform, 0,
 443                         NULL, e, "Public Key");
 444                 break;
 445
 446                 case KEY_CERT:
 447                 x = load_cert(bio_err, keyfile, keyform,
 448                         NULL, e, "Certificate");
 449                 if(x)
 450                         {
 451                         pkey = X509_get_pubkey(x);
 452                         X509_free(x);
 453                         }
 454                 break;
 455
 456                 }
 457
 458         *pkeysize = EVP_PKEY_size(pkey);
 459
 460         if (!pkey)
 461                 goto end;
 462
 463         ctx = EVP_PKEY_CTX_new(pkey, e);
 464
 465         EVP_PKEY_free(pkey);
 466
 467         if (!ctx)
 468                 goto end;
 469
 470         switch(pkey_op)
 471                 {
 472                 case EVP_PKEY_OP_SIGN:
 473                 rv = EVP_PKEY_sign_init(ctx);
 474                 break;
 475
 476                 case EVP_PKEY_OP_VERIFY:
 477                 rv = EVP_PKEY_verify_init(ctx);
 478                 break;
 479
 480                 case EVP_PKEY_OP_VERIFYRECOVER:
 481                 rv = EVP_PKEY_verify_recover_init(ctx);
 482                 break;
 483
 484                 case EVP_PKEY_OP_ENCRYPT:
 485                 rv = EVP_PKEY_encrypt_init(ctx);
 486                 break;
 487
 488                 case EVP_PKEY_OP_DECRYPT:
 489                 rv = EVP_PKEY_decrypt_init(ctx);
 490                 break;
 491
 492                 case EVP_PKEY_OP_DERIVE:
 493                 rv = EVP_PKEY_derive_init(ctx);
 494                 break;
 495                 }
 496
 497         if (rv <= 0)
 498                 {
 499                 EVP_PKEY_CTX_free(ctx);
 500                 ctx = NULL;
 501                 }
 502
 503         end:
 504
 505         if (passin)
 506                 OPENSSL_free(passin);
 507
 508         return ctx;
 509
 510
 511         }
 512
 513 static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
 514                                                         const char *file)
 515         {
 516         EVP_PKEY *peer = NULL;
 517         int ret;
 518         if (!ctx)
 519                 {
 520                 BIO_puts(err, "-peerkey command before -inkey\n");
 521                 return 0;
 522                 }
 523
 524         peer = load_pubkey(bio_err, file, peerform, 0, NULL, NULL, "Peer Key");
 525
 526         if (!peer)
 527                 {
 528                 BIO_printf(bio_err, "Error reading peer key %s\n", file);
 529                 ERR_print_errors(err);
 530                 return 0;
 531                 }
 532
 533         ret = EVP_PKEY_derive_set_peer(ctx, peer);
 534
 535         EVP_PKEY_free(peer);
 536         if (ret <= 0)
 537                 ERR_print_errors(err);
 538         return ret;
 539         }
 540
 541 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 542                 unsigned char *out, size_t *poutlen,
 543                 unsigned char *in, size_t inlen)
 544         {
 545         int rv = 0;
 546         switch(pkey_op)
 547                 {
 548                 case EVP_PKEY_OP_VERIFYRECOVER:
 549                 rv  = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 550                 break;
 551
 552                 case EVP_PKEY_OP_SIGN:
 553                 rv  = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 554                 break;
 555
 556                 case EVP_PKEY_OP_ENCRYPT:
 557                 rv  = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 558                 break;
 559
 560                 case EVP_PKEY_OP_DECRYPT:
 561                 rv  = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 562                 break;
 563
 564                 case EVP_PKEY_OP_DERIVE:
 565                 rv  = EVP_PKEY_derive(ctx, out, poutlen);
 566                 break;
 567
 568                 }
 569         return rv;
 570         }