crypto/openssl-0.9/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  * -aes128      - encrypt output if PEM format
  85  * -aes192      - encrypt output if PEM format
  86  * -aes256      - encrypt output if PEM format
  87  * -camellia128 - encrypt output if PEM format
  88  * -camellia192 - encrypt output if PEM format
  89  * -camellia256 - encrypt output if PEM format
  90  * -text        - print a text version
  91  * -modulus     - print the RSA key modulus
  92  * -check       - verify key consistency
  93  * -pubin       - Expect a public key in input file.
  94  * -pubout      - Output a public key.
  95  */
  96
  97 int MAIN(int, char **);
  98
  99 int MAIN(int argc, char **argv)
 100         {
 101         ENGINE *e = NULL;
 102         int ret=1;
 103         RSA *rsa=NULL;
 104         int i,badops=0, sgckey=0;
 105         const EVP_CIPHER *enc=NULL;
 106         BIO *out=NULL;
 107         int informat,outformat,text=0,check=0,noout=0;
 108         int pubin = 0, pubout = 0;
 109         char *infile,*outfile,*prog;
 110         char *passargin = NULL, *passargout = NULL;
 111         char *passin = NULL, *passout = NULL;
 112 #ifndef OPENSSL_NO_ENGINE
 113         char *engine=NULL;
 114 #endif
 115         int modulus=0;
 116
 117         apps_startup();
 118
 119         if (bio_err == NULL)
 120                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 121                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 122
 123         if (!load_config(bio_err, NULL))
 124                 goto end;
 125
 126         infile=NULL;
 127         outfile=NULL;
 128         informat=FORMAT_PEM;
 129         outformat=FORMAT_PEM;
 130
 131         prog=argv[0];
 132         argc--;
 133         argv++;
 134         while (argc >= 1)
 135                 {
 136                 if      (strcmp(*argv,"-inform") == 0)
 137                         {
 138                         if (--argc < 1) goto bad;
 139                         informat=str2fmt(*(++argv));
 140                         }
 141                 else if (strcmp(*argv,"-outform") == 0)
 142                         {
 143                         if (--argc < 1) goto bad;
 144                         outformat=str2fmt(*(++argv));
 145                         }
 146                 else if (strcmp(*argv,"-in") == 0)
 147                         {
 148                         if (--argc < 1) goto bad;
 149                         infile= *(++argv);
 150                         }
 151                 else if (strcmp(*argv,"-out") == 0)
 152                         {
 153                         if (--argc < 1) goto bad;
 154                         outfile= *(++argv);
 155                         }
 156                 else if (strcmp(*argv,"-passin") == 0)
 157                         {
 158                         if (--argc < 1) goto bad;
 159                         passargin= *(++argv);
 160                         }
 161                 else if (strcmp(*argv,"-passout") == 0)
 162                         {
 163                         if (--argc < 1) goto bad;
 164                         passargout= *(++argv);
 165                         }
 166 #ifndef OPENSSL_NO_ENGINE
 167                 else if (strcmp(*argv,"-engine") == 0)
 168                         {
 169                         if (--argc < 1) goto bad;
 170                         engine= *(++argv);
 171                         }
 172 #endif
 173                 else if (strcmp(*argv,"-sgckey") == 0)
 174                         sgckey=1;
 175                 else if (strcmp(*argv,"-pubin") == 0)
 176                         pubin=1;
 177                 else if (strcmp(*argv,"-pubout") == 0)
 178                         pubout=1;
 179                 else if (strcmp(*argv,"-noout") == 0)
 180                         noout=1;
 181                 else if (strcmp(*argv,"-text") == 0)
 182                         text=1;
 183                 else if (strcmp(*argv,"-modulus") == 0)
 184                         modulus=1;
 185                 else if (strcmp(*argv,"-check") == 0)
 186                         check=1;
 187                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 188                         {
 189                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 190                         badops=1;
 191                         break;
 192                         }
 193                 argc--;
 194                 argv++;
 195                 }
 196
 197         if (badops)
 198                 {
 199 bad:
 200                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 201                 BIO_printf(bio_err,"where options are\n");
 202                 BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");
 203                 BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");
 204                 BIO_printf(bio_err," -in arg         input file\n");
 205                 BIO_printf(bio_err," -sgckey         Use IIS SGC key format\n");
 206                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
 207                 BIO_printf(bio_err," -out arg        output file\n");
 208                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 209                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
 210                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 211 #ifndef OPENSSL_NO_IDEA
 212                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
 213 #endif
 214 #ifndef OPENSSL_NO_AES
 215                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 216                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 217 #endif
 218 #ifndef OPENSSL_NO_CAMELLIA
 219                 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
 220                 BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
 221 #endif
 222                 BIO_printf(bio_err," -text           print the key in text\n");
 223                 BIO_printf(bio_err," -noout          don't print key out\n");
 224                 BIO_printf(bio_err," -modulus        print the RSA key modulus\n");
 225                 BIO_printf(bio_err," -check          verify key consistency\n");
 226                 BIO_printf(bio_err," -pubin          expect a public key in input file\n");
 227                 BIO_printf(bio_err," -pubout         output a public key\n");
 228 #ifndef OPENSSL_NO_ENGINE
 229                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 230 #endif
 231                 goto end;
 232                 }
 233
 234         ERR_load_crypto_strings();
 235
 236 #ifndef OPENSSL_NO_ENGINE
 237         e = setup_engine(bio_err, engine, 0);
 238 #endif
 239
 240         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 241                 BIO_printf(bio_err, "Error getting passwords\n");
 242                 goto end;
 243         }
 244
 245         if(check && pubin) {
 246                 BIO_printf(bio_err, "Only private keys can be checked\n");
 247                 goto end;
 248         }
 249
 250         out=BIO_new(BIO_s_file());
 251
 252         {
 253                 EVP_PKEY        *pkey;
 254
 255                 if (pubin)
 256                         pkey = load_pubkey(bio_err, infile,
 257                                 (informat == FORMAT_NETSCAPE && sgckey ?
 258                                         FORMAT_IISSGC : informat), 1,
 259                                 passin, e, "Public Key");
 260                 else
 261                         pkey = load_key(bio_err, infile,
 262                                 (informat == FORMAT_NETSCAPE && sgckey ?
 263                                         FORMAT_IISSGC : informat), 1,
 264                                 passin, e, "Private Key");
 265
 266                 if (pkey != NULL)
 267                 rsa = pkey == NULL ? NULL : EVP_PKEY_get1_RSA(pkey);
 268                 EVP_PKEY_free(pkey);
 269         }
 270
 271         if (rsa == NULL)
 272                 {
 273                 ERR_print_errors(bio_err);
 274                 goto end;
 275                 }
 276
 277         if (outfile == NULL)
 278                 {
 279                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 280 #ifdef OPENSSL_SYS_VMS
 281                 {
 282                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 283                 out = BIO_push(tmpbio, out);
 284                 }
 285 #endif
 286                 }
 287         else
 288                 {
 289                 if (BIO_write_filename(out,outfile) <= 0)
 290                         {
 291                         perror(outfile);
 292                         goto end;
 293                         }
 294                 }
 295
 296         if (text)
 297                 if (!RSA_print(out,rsa,0))
 298                         {
 299                         perror(outfile);
 300                         ERR_print_errors(bio_err);
 301                         goto end;
 302                         }
 303
 304         if (modulus)
 305                 {
 306                 BIO_printf(out,"Modulus=");
 307                 BN_print(out,rsa->n);
 308                 BIO_printf(out,"\n");
 309                 }
 310
 311         if (check)
 312                 {
 313                 int r = RSA_check_key(rsa);
 314
 315                 if (r == 1)
 316                         BIO_printf(out,"RSA key ok\n");
 317                 else if (r == 0)
 318                         {
 319                         unsigned long err;
 320
 321                         while ((err = ERR_peek_error()) != 0 &&
 322                                 ERR_GET_LIB(err) == ERR_LIB_RSA &&
 323                                 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
 324                                 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
 325                                 {
 326                                 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
 327                                 ERR_get_error(); /* remove e from error stack */
 328                                 }
 329                         }
 330
 331                 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
 332                         {
 333                         ERR_print_errors(bio_err);
 334                         goto end;
 335                         }
 336                 }
 337
 338         if (noout)
 339                 {
 340                 ret = 0;
 341                 goto end;
 342                 }
 343         BIO_printf(bio_err,"writing RSA key\n");
 344         if      (outformat == FORMAT_ASN1) {
 345                 if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa);
 346                 else i=i2d_RSAPrivateKey_bio(out,rsa);
 347         }
 348 #ifndef OPENSSL_NO_RC4
 349         else if (outformat == FORMAT_NETSCAPE)
 350                 {
 351                 unsigned char *p,*pp;
 352                 int size;
 353
 354                 i=1;
 355                 size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
 356                 if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
 357                         {
 358                         BIO_printf(bio_err,"Memory allocation failure\n");
 359                         goto end;
 360                         }
 361                 pp=p;
 362                 i2d_RSA_NET(rsa,&p,NULL, sgckey);
 363                 BIO_write(out,(char *)pp,size);
 364                 OPENSSL_free(pp);
 365                 }
 366 #endif
 367         else if (outformat == FORMAT_PEM) {
 368                 if(pubout || pubin)
 369                     i=PEM_write_bio_RSA_PUBKEY(out,rsa);
 370                 else i=PEM_write_bio_RSAPrivateKey(out,rsa,
 371                                                 enc,NULL,0,NULL,passout);
 372         } else  {
 373                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 374                 goto end;
 375                 }
 376         if (!i)
 377                 {
 378                 BIO_printf(bio_err,"unable to write key\n");
 379                 ERR_print_errors(bio_err);
 380                 }
 381         else
 382                 ret=0;
 383 end:
 384         if(out != NULL) BIO_free_all(out);
 385         if(rsa != NULL) RSA_free(rsa);
 386         if(passin) OPENSSL_free(passin);
 387         if(passout) OPENSSL_free(passout);
 388         apps_shutdown();
 389         OPENSSL_EXIT(ret);
 390         }
 391 #else /* !OPENSSL_NO_RSA */
 392
 393 # if PEDANTIC
 394 static void *dummy=&dummy;
 395 # endif
 396
 397 #endif