crypto/external/bsd/openssl/dist/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 /* -inform arg  - input format - default PEM (one of DER, NET or PEM)
  78  * -outform arg - output format - default PEM
  79  * -in arg      - input file - default stdin
  80  * -out arg     - output file - default stdout
  81  * -des         - encrypt output if PEM format with DES in cbc mode
  82  * -des3        - encrypt output if PEM format
  83  * -idea        - encrypt output if PEM format
  84  * -seed        - encrypt output if PEM format
  85  * -aes128      - encrypt output if PEM format
  86  * -aes192      - encrypt output if PEM format
  87  * -aes256      - encrypt output if PEM format
  88  * -camellia128 - encrypt output if PEM format
  89  * -camellia192 - encrypt output if PEM format
  90  * -camellia256 - encrypt output if PEM format
  91  * -text        - print a text version
  92  * -modulus     - print the RSA key modulus
  93  * -check       - verify key consistency
  94  * -pubin       - Expect a public key in input file.
  95  * -pubout      - Output a public key.
  96  */
  97
  98 int MAIN(int, char **);
  99
 100 int MAIN(int argc, char **argv)
 101         {
 102         ENGINE *e = NULL;
 103         int ret=1;
 104         RSA *rsa=NULL;
 105         int i,badops=0, sgckey=0;
 106         const EVP_CIPHER *enc=NULL;
 107         BIO *out=NULL;
 108         int informat,outformat,text=0,check=0,noout=0;
 109         int pubin = 0, pubout = 0;
 110         char *infile,*outfile,*prog;
 111         char *passargin = NULL, *passargout = NULL;
 112         char *passin = NULL, *passout = NULL;
 113 #ifndef OPENSSL_NO_ENGINE
 114         char *engine=NULL;
 115 #endif
 116         int modulus=0;
 117
 118         int pvk_encr = 2;
 119
 120         apps_startup();
 121
 122         if (bio_err == NULL)
 123                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 124                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 125
 126         if (!load_config(bio_err, NULL))
 127                 goto end;
 128
 129         infile=NULL;
 130         outfile=NULL;
 131         informat=FORMAT_PEM;
 132         outformat=FORMAT_PEM;
 133
 134         prog=argv[0];
 135         argc--;
 136         argv++;
 137         while (argc >= 1)
 138                 {
 139                 if      (strcmp(*argv,"-inform") == 0)
 140                         {
 141                         if (--argc < 1) goto bad;
 142                         informat=str2fmt(*(++argv));
 143                         }
 144                 else if (strcmp(*argv,"-outform") == 0)
 145                         {
 146                         if (--argc < 1) goto bad;
 147                         outformat=str2fmt(*(++argv));
 148                         }
 149                 else if (strcmp(*argv,"-in") == 0)
 150                         {
 151                         if (--argc < 1) goto bad;
 152                         infile= *(++argv);
 153                         }
 154                 else if (strcmp(*argv,"-out") == 0)
 155                         {
 156                         if (--argc < 1) goto bad;
 157                         outfile= *(++argv);
 158                         }
 159                 else if (strcmp(*argv,"-passin") == 0)
 160                         {
 161                         if (--argc < 1) goto bad;
 162                         passargin= *(++argv);
 163                         }
 164                 else if (strcmp(*argv,"-passout") == 0)
 165                         {
 166                         if (--argc < 1) goto bad;
 167                         passargout= *(++argv);
 168                         }
 169 #ifndef OPENSSL_NO_ENGINE
 170                 else if (strcmp(*argv,"-engine") == 0)
 171                         {
 172                         if (--argc < 1) goto bad;
 173                         engine= *(++argv);
 174                         }
 175 #endif
 176                 else if (strcmp(*argv,"-sgckey") == 0)
 177                         sgckey=1;
 178                 else if (strcmp(*argv,"-pubin") == 0)
 179                         pubin=1;
 180                 else if (strcmp(*argv,"-pubout") == 0)
 181                         pubout=1;
 182                 else if (strcmp(*argv,"-RSAPublicKey_in") == 0)
 183                         pubin = 2;
 184                 else if (strcmp(*argv,"-RSAPublicKey_out") == 0)
 185                         pubout = 2;
 186                 else if (strcmp(*argv,"-pvk-strong") == 0)
 187                         pvk_encr=2;
 188                 else if (strcmp(*argv,"-pvk-weak") == 0)
 189                         pvk_encr=1;
 190                 else if (strcmp(*argv,"-pvk-none") == 0)
 191                         pvk_encr=0;
 192                 else if (strcmp(*argv,"-noout") == 0)
 193                         noout=1;
 194                 else if (strcmp(*argv,"-text") == 0)
 195                         text=1;
 196                 else if (strcmp(*argv,"-modulus") == 0)
 197                         modulus=1;
 198                 else if (strcmp(*argv,"-check") == 0)
 199                         check=1;
 200                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 201                         {
 202                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 203                         badops=1;
 204                         break;
 205                         }
 206                 argc--;
 207                 argv++;
 208                 }
 209
 210         if (badops)
 211                 {
 212 bad:
 213                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 214                 BIO_printf(bio_err,"where options are\n");
 215                 BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");
 216                 BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");
 217                 BIO_printf(bio_err," -in arg         input file\n");
 218                 BIO_printf(bio_err," -sgckey         Use IIS SGC key format\n");
 219                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
 220                 BIO_printf(bio_err," -out arg        output file\n");
 221                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 222                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
 223                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 224 #ifndef OPENSSL_NO_IDEA
 225                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
 226 #endif
 227 #ifndef OPENSSL_NO_SEED
 228                 BIO_printf(bio_err," -seed           encrypt PEM output with cbc seed\n");
 229 #endif
 230 #ifndef OPENSSL_NO_AES
 231                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 232                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 233 #endif
 234 #ifndef OPENSSL_NO_CAMELLIA
 235                 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
 236                 BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
 237 #endif
 238                 BIO_printf(bio_err," -text           print the key in text\n");
 239                 BIO_printf(bio_err," -noout          don't print key out\n");
 240                 BIO_printf(bio_err," -modulus        print the RSA key modulus\n");
 241                 BIO_printf(bio_err," -check          verify key consistency\n");
 242                 BIO_printf(bio_err," -pubin          expect a public key in input file\n");
 243                 BIO_printf(bio_err," -pubout         output a public key\n");
 244 #ifndef OPENSSL_NO_ENGINE
 245                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 246 #endif
 247                 goto end;
 248                 }
 249
 250         ERR_load_crypto_strings();
 251
 252 #ifndef OPENSSL_NO_ENGINE
 253         e = setup_engine(bio_err, engine, 0);
 254 #endif
 255
 256         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 257                 BIO_printf(bio_err, "Error getting passwords\n");
 258                 goto end;
 259         }
 260
 261         if(check && pubin) {
 262                 BIO_printf(bio_err, "Only private keys can be checked\n");
 263                 goto end;
 264         }
 265
 266         out=BIO_new(BIO_s_file());
 267
 268         {
 269                 EVP_PKEY        *pkey;
 270
 271                 if (pubin)
 272                         {
 273                         int tmpformat=-1;
 274                         if (pubin == 2)
 275                                 {
 276                                 if (informat == FORMAT_PEM)
 277                                         tmpformat = FORMAT_PEMRSA;
 278                                 else if (informat == FORMAT_ASN1)
 279                                         tmpformat = FORMAT_ASN1RSA;
 280                                 }
 281                         else if (informat == FORMAT_NETSCAPE && sgckey)
 282                                 tmpformat = FORMAT_IISSGC;
 283                         else
 284                                 tmpformat = informat;
 285
 286                         pkey = load_pubkey(bio_err, infile, tmpformat, 1,
 287                                 passin, e, "Public Key");
 288                         }
 289                 else
 290                         pkey = load_key(bio_err, infile,
 291                                 (informat == FORMAT_NETSCAPE && sgckey ?
 292                                         FORMAT_IISSGC : informat), 1,
 293                                 passin, e, "Private Key");
 294
 295                 if (pkey != NULL)
 296                         rsa = EVP_PKEY_get1_RSA(pkey);
 297                 EVP_PKEY_free(pkey);
 298         }
 299
 300         if (rsa == NULL)
 301                 {
 302                 ERR_print_errors(bio_err);
 303                 goto end;
 304                 }
 305
 306         if (outfile == NULL)
 307                 {
 308                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 309 #ifdef OPENSSL_SYS_VMS
 310                 {
 311                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 312                 out = BIO_push(tmpbio, out);
 313                 }
 314 #endif
 315                 }
 316         else
 317                 {
 318                 if (BIO_write_filename(out,outfile) <= 0)
 319                         {
 320                         perror(outfile);
 321                         goto end;
 322                         }
 323                 }
 324
 325         if (text)
 326                 if (!RSA_print(out,rsa,0))
 327                         {
 328                         perror(outfile);
 329                         ERR_print_errors(bio_err);
 330                         goto end;
 331                         }
 332
 333         if (modulus)
 334                 {
 335                 BIO_printf(out,"Modulus=");
 336                 BN_print(out,rsa->n);
 337                 BIO_printf(out,"\n");
 338                 }
 339
 340         if (check)
 341                 {
 342                 int r = RSA_check_key(rsa);
 343
 344                 if (r == 1)
 345                         BIO_printf(out,"RSA key ok\n");
 346                 else if (r == 0)
 347                         {
 348                         unsigned long err;
 349
 350                         while ((err = ERR_peek_error()) != 0 &&
 351                                 ERR_GET_LIB(err) == ERR_LIB_RSA &&
 352                                 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
 353                                 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
 354                                 {
 355                                 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
 356                                 ERR_get_error(); /* remove e from error stack */
 357                                 }
 358                         }
 359
 360                 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
 361                         {
 362                         ERR_print_errors(bio_err);
 363                         goto end;
 364                         }
 365                 }
 366
 367         if (noout)
 368                 {
 369                 ret = 0;
 370                 goto end;
 371                 }
 372         BIO_printf(bio_err,"writing RSA key\n");
 373         if      (outformat == FORMAT_ASN1) {
 374                 if(pubout || pubin)
 375                         {
 376                         if (pubout == 2)
 377                                 i=i2d_RSAPublicKey_bio(out,rsa);
 378                         else
 379                                 i=i2d_RSA_PUBKEY_bio(out,rsa);
 380                         }
 381                 else i=i2d_RSAPrivateKey_bio(out,rsa);
 382         }
 383 #ifndef OPENSSL_NO_RC4
 384         else if (outformat == FORMAT_NETSCAPE)
 385                 {
 386                 unsigned char *p,*pp;
 387                 int size;
 388
 389                 i=1;
 390                 size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
 391                 if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
 392                         {
 393                         BIO_printf(bio_err,"Memory allocation failure\n");
 394                         goto end;
 395                         }
 396                 pp=p;
 397                 i2d_RSA_NET(rsa,&p,NULL, sgckey);
 398                 BIO_write(out,(char *)pp,size);
 399                 OPENSSL_free(pp);
 400                 }
 401 #endif
 402         else if (outformat == FORMAT_PEM) {
 403                 if(pubout || pubin)
 404                         {
 405                         if (pubout == 2)
 406                                 i=PEM_write_bio_RSAPublicKey(out,rsa);
 407                         else
 408                                 i=PEM_write_bio_RSA_PUBKEY(out,rsa);
 409                         }
 410                 else i=PEM_write_bio_RSAPrivateKey(out,rsa,
 411                                                 enc,NULL,0,NULL,passout);
 412 #ifndef OPENSSL_NO_DSA
 413         } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
 414                 EVP_PKEY *pk;
 415                 pk = EVP_PKEY_new();
 416                 EVP_PKEY_set1_RSA(pk, rsa);
 417                 if (outformat == FORMAT_PVK)
 418                         i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
 419                 else if (pubin || pubout)
 420                         i = i2b_PublicKey_bio(out, pk);
 421                 else
 422                         i = i2b_PrivateKey_bio(out, pk);
 423                 EVP_PKEY_free(pk);
 424 #endif
 425         } else  {
 426                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 427                 goto end;
 428                 }
 429         if (i <= 0)
 430                 {
 431                 BIO_printf(bio_err,"unable to write key\n");
 432                 ERR_print_errors(bio_err);
 433                 }
 434         else
 435                 ret=0;
 436 end:
 437         if(out != NULL) BIO_free_all(out);
 438         if(rsa != NULL) RSA_free(rsa);
 439         if(passin) OPENSSL_free(passin);
 440         if(passout) OPENSSL_free(passout);
 441         apps_shutdown();
 442         OPENSSL_EXIT(ret);
 443         }
 444 #else /* !OPENSSL_NO_RSA */
 445
 446 # if PEDANTIC
 447 static void *dummy=&dummy;
 448 # endif
 449
 450 #endif