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