crypto/openssl/apps/rsa.c

   1 /* apps/rsa.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 <openssl/opensslconf.h>
  60 #ifndef OPENSSL_NO_RSA
  61 # include <stdio.h>
  62 # include <stdlib.h>
  63 # include <string.h>
  64 # include <time.h>
  65 # include "apps.h"
  66 # include <openssl/bio.h>
  67 # include <openssl/err.h>
  68 # include <openssl/rsa.h>
  69 # include <openssl/evp.h>
  70 # include <openssl/x509.h>
  71 # include <openssl/pem.h>
  72 # include <openssl/bn.h>
  73
  74 # undef PROG
  75 # define PROG    rsa_main
  76
  77 /*-
  78  * -inform arg  - input format - default PEM (one of DER, NET or PEM)
  79  * -outform arg - output format - default PEM
  80  * -in arg      - input file - default stdin
  81  * -out arg     - output file - default stdout
  82  * -des         - encrypt output if PEM format with DES in cbc mode
  83  * -des3        - encrypt output if PEM format
  84  * -idea        - encrypt output if PEM format
  85  * -seed        - encrypt output if PEM format
  86  * -aes128      - encrypt output if PEM format
  87  * -aes192      - encrypt output if PEM format
  88  * -aes256      - encrypt output if PEM format
  89  * -camellia128 - encrypt output if PEM format
  90  * -camellia192 - encrypt output if PEM format
  91  * -camellia256 - encrypt output if PEM format
  92  * -text        - print a text version
  93  * -modulus     - print the RSA key modulus
  94  * -check       - verify key consistency
  95  * -pubin       - Expect a public key in input file.
  96  * -pubout      - Output a public key.
  97  */
  98
  99 int MAIN(int, char **);
 100
 101 int MAIN(int argc, char **argv)
 102 {
 103     ENGINE *e = NULL;
 104     int ret = 1;
 105     RSA *rsa = NULL;
 106     int i, badops = 0, sgckey = 0;
 107     const EVP_CIPHER *enc = NULL;
 108     BIO *out = NULL;
 109     int informat, outformat, text = 0, check = 0, noout = 0;
 110     int pubin = 0, pubout = 0;
 111     char *infile, *outfile, *prog;
 112     char *passargin = NULL, *passargout = NULL;
 113     char *passin = NULL, *passout = NULL;
 114 # ifndef OPENSSL_NO_ENGINE
 115     char *engine = NULL;
 116 # endif
 117     int modulus = 0;
 118
 119     int pvk_encr = 2;
 120
 121     apps_startup();
 122
 123     if (bio_err == NULL)
 124         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 125             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 126
 127     if (!load_config(bio_err, NULL))
 128         goto end;
 129
 130     infile = NULL;
 131     outfile = NULL;
 132     informat = FORMAT_PEM;
 133     outformat = FORMAT_PEM;
 134
 135     prog = argv[0];
 136     argc--;
 137     argv++;
 138     while (argc >= 1) {
 139         if (strcmp(*argv, "-inform") == 0) {
 140             if (--argc < 1)
 141                 goto bad;
 142             informat = str2fmt(*(++argv));
 143         } else if (strcmp(*argv, "-outform") == 0) {
 144             if (--argc < 1)
 145                 goto bad;
 146             outformat = str2fmt(*(++argv));
 147         } else if (strcmp(*argv, "-in") == 0) {
 148             if (--argc < 1)
 149                 goto bad;
 150             infile = *(++argv);
 151         } else if (strcmp(*argv, "-out") == 0) {
 152             if (--argc < 1)
 153                 goto bad;
 154             outfile = *(++argv);
 155         } else if (strcmp(*argv, "-passin") == 0) {
 156             if (--argc < 1)
 157                 goto bad;
 158             passargin = *(++argv);
 159         } else if (strcmp(*argv, "-passout") == 0) {
 160             if (--argc < 1)
 161                 goto bad;
 162             passargout = *(++argv);
 163         }
 164 # ifndef OPENSSL_NO_ENGINE
 165         else if (strcmp(*argv, "-engine") == 0) {
 166             if (--argc < 1)
 167                 goto bad;
 168             engine = *(++argv);
 169         }
 170 # endif
 171         else if (strcmp(*argv, "-sgckey") == 0)
 172             sgckey = 1;
 173         else if (strcmp(*argv, "-pubin") == 0)
 174             pubin = 1;
 175         else if (strcmp(*argv, "-pubout") == 0)
 176             pubout = 1;
 177         else if (strcmp(*argv, "-RSAPublicKey_in") == 0)
 178             pubin = 2;
 179         else if (strcmp(*argv, "-RSAPublicKey_out") == 0)
 180             pubout = 2;
 181         else if (strcmp(*argv, "-pvk-strong") == 0)
 182             pvk_encr = 2;
 183         else if (strcmp(*argv, "-pvk-weak") == 0)
 184             pvk_encr = 1;
 185         else if (strcmp(*argv, "-pvk-none") == 0)
 186             pvk_encr = 0;
 187         else if (strcmp(*argv, "-noout") == 0)
 188             noout = 1;
 189         else if (strcmp(*argv, "-text") == 0)
 190             text = 1;
 191         else if (strcmp(*argv, "-modulus") == 0)
 192             modulus = 1;
 193         else if (strcmp(*argv, "-check") == 0)
 194             check = 1;
 195         else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) {
 196             BIO_printf(bio_err, "unknown option %s\n", *argv);
 197             badops = 1;
 198             break;
 199         }
 200         argc--;
 201         argv++;
 202     }
 203
 204     if (badops) {
 205  bad:
 206         BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
 207         BIO_printf(bio_err, "where options are\n");
 208         BIO_printf(bio_err,
 209                    " -inform arg     input format - one of DER NET PEM\n");
 210         BIO_printf(bio_err,
 211                    " -outform arg    output format - one of DER NET PEM\n");
 212         BIO_printf(bio_err, " -in arg         input file\n");
 213         BIO_printf(bio_err, " -sgckey         Use IIS SGC key format\n");
 214         BIO_printf(bio_err,
 215                    " -passin arg     input file pass phrase source\n");
 216         BIO_printf(bio_err, " -out arg        output file\n");
 217         BIO_printf(bio_err,
 218                    " -passout arg    output file pass phrase source\n");
 219         BIO_printf(bio_err,
 220                    " -des            encrypt PEM output with cbc des\n");
 221         BIO_printf(bio_err,
 222                    " -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 223 # ifndef OPENSSL_NO_IDEA
 224         BIO_printf(bio_err,
 225                    " -idea           encrypt PEM output with cbc idea\n");
 226 # endif
 227 # ifndef OPENSSL_NO_SEED
 228         BIO_printf(bio_err,
 229                    " -seed           encrypt PEM output with cbc seed\n");
 230 # endif
 231 # ifndef OPENSSL_NO_AES
 232         BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
 233         BIO_printf(bio_err,
 234                    "                 encrypt PEM output with cbc aes\n");
 235 # endif
 236 # ifndef OPENSSL_NO_CAMELLIA
 237         BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
 238         BIO_printf(bio_err,
 239                    "                 encrypt PEM output with cbc camellia\n");
 240 # endif
 241         BIO_printf(bio_err, " -text           print the key in text\n");
 242         BIO_printf(bio_err, " -noout          don't print key out\n");
 243         BIO_printf(bio_err, " -modulus        print the RSA key modulus\n");
 244         BIO_printf(bio_err, " -check          verify key consistency\n");
 245         BIO_printf(bio_err,
 246                    " -pubin          expect a public key in input file\n");
 247         BIO_printf(bio_err, " -pubout         output a public key\n");
 248 # ifndef OPENSSL_NO_ENGINE
 249         BIO_printf(bio_err,
 250                    " -engine e       use engine e, possibly a hardware device.\n");
 251 # endif
 252         goto end;
 253     }
 254
 255     ERR_load_crypto_strings();
 256
 257 # ifndef OPENSSL_NO_ENGINE
 258     e = setup_engine(bio_err, engine, 0);
 259 # endif
 260
 261     if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 262         BIO_printf(bio_err, "Error getting passwords\n");
 263         goto end;
 264     }
 265
 266     if (check && pubin) {
 267         BIO_printf(bio_err, "Only private keys can be checked\n");
 268         goto end;
 269     }
 270
 271     out = BIO_new(BIO_s_file());
 272
 273     {
 274         EVP_PKEY *pkey;
 275
 276         if (pubin) {
 277             int tmpformat = -1;
 278             if (pubin == 2) {
 279                 if (informat == FORMAT_PEM)
 280                     tmpformat = FORMAT_PEMRSA;
 281                 else if (informat == FORMAT_ASN1)
 282                     tmpformat = FORMAT_ASN1RSA;
 283             } else if (informat == FORMAT_NETSCAPE && sgckey)
 284                 tmpformat = FORMAT_IISSGC;
 285             else
 286                 tmpformat = informat;
 287
 288             pkey = load_pubkey(bio_err, infile, tmpformat, 1,
 289                                passin, e, "Public Key");
 290         } else
 291             pkey = load_key(bio_err, infile,
 292                             (informat == FORMAT_NETSCAPE && sgckey ?
 293                              FORMAT_IISSGC : informat), 1,
 294                             passin, e, "Private Key");
 295
 296         if (pkey != NULL)
 297             rsa = EVP_PKEY_get1_RSA(pkey);
 298         EVP_PKEY_free(pkey);
 299     }
 300
 301     if (rsa == NULL) {
 302         ERR_print_errors(bio_err);
 303         goto end;
 304     }
 305
 306     if (outfile == NULL) {
 307         BIO_set_fp(out, stdout, BIO_NOCLOSE);
 308 # ifdef OPENSSL_SYS_VMS
 309         {
 310             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 311             out = BIO_push(tmpbio, out);
 312         }
 313 # endif
 314     } else {
 315         if (BIO_write_filename(out, outfile) <= 0) {
 316             perror(outfile);
 317             goto end;
 318         }
 319     }
 320
 321     if (text)
 322         if (!RSA_print(out, rsa, 0)) {
 323             perror(outfile);
 324             ERR_print_errors(bio_err);
 325             goto end;
 326         }
 327
 328     if (modulus) {
 329         BIO_printf(out, "Modulus=");
 330         BN_print(out, rsa->n);
 331         BIO_printf(out, "\n");
 332     }
 333
 334     if (check) {
 335         int r = RSA_check_key(rsa);
 336
 337         if (r == 1)
 338             BIO_printf(out, "RSA key ok\n");
 339         else if (r == 0) {
 340             unsigned long err;
 341
 342             while ((err = ERR_peek_error()) != 0 &&
 343                    ERR_GET_LIB(err) == ERR_LIB_RSA &&
 344                    ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
 345                    ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) {
 346                 BIO_printf(out, "RSA key error: %s\n",
 347                            ERR_reason_error_string(err));
 348                 ERR_get_error(); /* remove e from error stack */
 349             }
 350         }
 351
 352         if (r == -1 || ERR_peek_error() != 0) { /* should happen only if r ==
 353                                                  * -1 */
 354             ERR_print_errors(bio_err);
 355             goto end;
 356         }
 357     }
 358
 359     if (noout) {
 360         ret = 0;
 361         goto end;
 362     }
 363     BIO_printf(bio_err, "writing RSA key\n");
 364     if (outformat == FORMAT_ASN1) {
 365         if (pubout || pubin) {
 366             if (pubout == 2)
 367                 i = i2d_RSAPublicKey_bio(out, rsa);
 368             else
 369                 i = i2d_RSA_PUBKEY_bio(out, rsa);
 370         } else
 371             i = i2d_RSAPrivateKey_bio(out, rsa);
 372     }
 373 # ifndef OPENSSL_NO_RC4
 374     else if (outformat == FORMAT_NETSCAPE) {
 375         unsigned char *p, *pp;
 376         int size;
 377
 378         i = 1;
 379         size = i2d_RSA_NET(rsa, NULL, NULL, sgckey);
 380         if ((p = (unsigned char *)OPENSSL_malloc(size)) == NULL) {
 381             BIO_printf(bio_err, "Memory allocation failure\n");
 382             goto end;
 383         }
 384         pp = p;
 385         i2d_RSA_NET(rsa, &p, NULL, sgckey);
 386         BIO_write(out, (char *)pp, size);
 387         OPENSSL_free(pp);
 388     }
 389 # endif
 390     else if (outformat == FORMAT_PEM) {
 391         if (pubout || pubin) {
 392             if (pubout == 2)
 393                 i = PEM_write_bio_RSAPublicKey(out, rsa);
 394             else
 395                 i = PEM_write_bio_RSA_PUBKEY(out, rsa);
 396         } else
 397             i = PEM_write_bio_RSAPrivateKey(out, rsa,
 398                                             enc, NULL, 0, NULL, passout);
 399 # if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
 400     } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
 401         EVP_PKEY *pk;
 402         pk = EVP_PKEY_new();
 403         EVP_PKEY_set1_RSA(pk, rsa);
 404         if (outformat == FORMAT_PVK)
 405             i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
 406         else if (pubin || pubout)
 407             i = i2b_PublicKey_bio(out, pk);
 408         else
 409             i = i2b_PrivateKey_bio(out, pk);
 410         EVP_PKEY_free(pk);
 411 # endif
 412     } else {
 413         BIO_printf(bio_err, "bad output format specified for outfile\n");
 414         goto end;
 415     }
 416     if (i <= 0) {
 417         BIO_printf(bio_err, "unable to write key\n");
 418         ERR_print_errors(bio_err);
 419     } else
 420         ret = 0;
 421  end:
 422     if (out != NULL)
 423         BIO_free_all(out);
 424     if (rsa != NULL)
 425         RSA_free(rsa);
 426     if (passin)
 427         OPENSSL_free(passin);
 428     if (passout)
 429         OPENSSL_free(passout);
 430     apps_shutdown();
 431     OPENSSL_EXIT(ret);
 432 }
 433 #else                           /* !OPENSSL_NO_RSA */
 434
 435 # if PEDANTIC
 436 static void *dummy = &dummy;
 437 # endif
 438
 439 #endif