crypto/openssl-0.9.7d/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 #ifndef OPENSSL_NO_RSA
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #include <time.h>
  64 #include "apps.h"
  65 #include <openssl/bio.h>
  66 #include <openssl/err.h>
  67 #include <openssl/rsa.h>
  68 #include <openssl/evp.h>
  69 #include <openssl/x509.h>
  70 #include <openssl/pem.h>
  71
  72 #undef PROG
  73 #define PROG    rsa_main
  74
  75 /* -inform arg  - input format - default PEM (one of DER, NET or PEM)
  76  * -outform arg - output format - default PEM
  77  * -in arg      - input file - default stdin
  78  * -out arg     - output file - default stdout
  79  * -des         - encrypt output if PEM format with DES in cbc mode
  80  * -des3        - encrypt output if PEM format
  81  * -idea        - encrypt output if PEM format
  82  * -aes128      - encrypt output if PEM format
  83  * -aes192      - encrypt output if PEM format
  84  * -aes256      - encrypt output if PEM format
  85  * -text        - print a text version
  86  * -modulus     - print the RSA key modulus
  87  * -check       - verify key consistency
  88  * -pubin       - Expect a public key in input file.
  89  * -pubout      - Output a public key.
  90  */
  91
  92 int MAIN(int, char **);
  93
  94 int MAIN(int argc, char **argv)
  95         {
  96         ENGINE *e = NULL;
  97         int ret=1;
  98         RSA *rsa=NULL;
  99         int i,badops=0, sgckey=0;
 100         const EVP_CIPHER *enc=NULL;
 101         BIO *out=NULL;
 102         int informat,outformat,text=0,check=0,noout=0;
 103         int pubin = 0, pubout = 0;
 104         char *infile,*outfile,*prog;
 105         char *passargin = NULL, *passargout = NULL;
 106         char *passin = NULL, *passout = NULL;
 107 #ifndef OPENSSL_NO_ENGINE
 108         char *engine=NULL;
 109 #endif
 110         int modulus=0;
 111
 112         apps_startup();
 113
 114         if (bio_err == NULL)
 115                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 116                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 117
 118         if (!load_config(bio_err, NULL))
 119                 goto end;
 120
 121         infile=NULL;
 122         outfile=NULL;
 123         informat=FORMAT_PEM;
 124         outformat=FORMAT_PEM;
 125
 126         prog=argv[0];
 127         argc--;
 128         argv++;
 129         while (argc >= 1)
 130                 {
 131                 if      (strcmp(*argv,"-inform") == 0)
 132                         {
 133                         if (--argc < 1) goto bad;
 134                         informat=str2fmt(*(++argv));
 135                         }
 136                 else if (strcmp(*argv,"-outform") == 0)
 137                         {
 138                         if (--argc < 1) goto bad;
 139                         outformat=str2fmt(*(++argv));
 140                         }
 141                 else if (strcmp(*argv,"-in") == 0)
 142                         {
 143                         if (--argc < 1) goto bad;
 144                         infile= *(++argv);
 145                         }
 146                 else if (strcmp(*argv,"-out") == 0)
 147                         {
 148                         if (--argc < 1) goto bad;
 149                         outfile= *(++argv);
 150                         }
 151                 else if (strcmp(*argv,"-passin") == 0)
 152                         {
 153                         if (--argc < 1) goto bad;
 154                         passargin= *(++argv);
 155                         }
 156                 else if (strcmp(*argv,"-passout") == 0)
 157                         {
 158                         if (--argc < 1) goto bad;
 159                         passargout= *(++argv);
 160                         }
 161 #ifndef OPENSSL_NO_ENGINE
 162                 else if (strcmp(*argv,"-engine") == 0)
 163                         {
 164                         if (--argc < 1) goto bad;
 165                         engine= *(++argv);
 166                         }
 167 #endif
 168                 else if (strcmp(*argv,"-sgckey") == 0)
 169                         sgckey=1;
 170                 else if (strcmp(*argv,"-pubin") == 0)
 171                         pubin=1;
 172                 else if (strcmp(*argv,"-pubout") == 0)
 173                         pubout=1;
 174                 else if (strcmp(*argv,"-noout") == 0)
 175                         noout=1;
 176                 else if (strcmp(*argv,"-text") == 0)
 177                         text=1;
 178                 else if (strcmp(*argv,"-modulus") == 0)
 179                         modulus=1;
 180                 else if (strcmp(*argv,"-check") == 0)
 181                         check=1;
 182                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
 183                         {
 184                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 185                         badops=1;
 186                         break;
 187                         }
 188                 argc--;
 189                 argv++;
 190                 }
 191
 192         if (badops)
 193                 {
 194 bad:
 195                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 196                 BIO_printf(bio_err,"where options are\n");
 197                 BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");
 198                 BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");
 199                 BIO_printf(bio_err," -in arg         input file\n");
 200                 BIO_printf(bio_err," -sgckey         Use IIS SGC key format\n");
 201                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
 202                 BIO_printf(bio_err," -out arg        output file\n");
 203                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
 204                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
 205                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
 206 #ifndef OPENSSL_NO_IDEA
 207                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
 208 #endif
 209 #ifndef OPENSSL_NO_AES
 210                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
 211                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
 212 #endif
 213                 BIO_printf(bio_err," -text           print the key in text\n");
 214                 BIO_printf(bio_err," -noout          don't print key out\n");
 215                 BIO_printf(bio_err," -modulus        print the RSA key modulus\n");
 216                 BIO_printf(bio_err," -check          verify key consistency\n");
 217                 BIO_printf(bio_err," -pubin          expect a public key in input file\n");
 218                 BIO_printf(bio_err," -pubout         output a public key\n");
 219 #ifndef OPENSSL_NO_ENGINE
 220                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
 221 #endif
 222                 goto end;
 223                 }
 224
 225         ERR_load_crypto_strings();
 226
 227 #ifndef OPENSSL_NO_ENGINE
 228         e = setup_engine(bio_err, engine, 0);
 229 #endif
 230
 231         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 232                 BIO_printf(bio_err, "Error getting passwords\n");
 233                 goto end;
 234         }
 235
 236         if(check && pubin) {
 237                 BIO_printf(bio_err, "Only private keys can be checked\n");
 238                 goto end;
 239         }
 240
 241         out=BIO_new(BIO_s_file());
 242
 243         {
 244                 EVP_PKEY        *pkey;
 245
 246                 if (pubin)
 247                         pkey = load_pubkey(bio_err, infile,
 248                                 (informat == FORMAT_NETSCAPE && sgckey ?
 249                                         FORMAT_IISSGC : informat), 1,
 250                                 passin, e, "Public Key");
 251                 else
 252                         pkey = load_key(bio_err, infile,
 253                                 (informat == FORMAT_NETSCAPE && sgckey ?
 254                                         FORMAT_IISSGC : informat), 1,
 255                                 passin, e, "Private Key");
 256
 257                 if (pkey != NULL)
 258                 rsa = pkey == NULL ? NULL : EVP_PKEY_get1_RSA(pkey);
 259                 EVP_PKEY_free(pkey);
 260         }
 261
 262         if (rsa == NULL)
 263                 {
 264                 ERR_print_errors(bio_err);
 265                 goto end;
 266                 }
 267
 268         if (outfile == NULL)
 269                 {
 270                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 271 #ifdef OPENSSL_SYS_VMS
 272                 {
 273                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 274                 out = BIO_push(tmpbio, out);
 275                 }
 276 #endif
 277                 }
 278         else
 279                 {
 280                 if (BIO_write_filename(out,outfile) <= 0)
 281                         {
 282                         perror(outfile);
 283                         goto end;
 284                         }
 285                 }
 286
 287         if (text)
 288                 if (!RSA_print(out,rsa,0))
 289                         {
 290                         perror(outfile);
 291                         ERR_print_errors(bio_err);
 292                         goto end;
 293                         }
 294
 295         if (modulus)
 296                 {
 297                 BIO_printf(out,"Modulus=");
 298                 BN_print(out,rsa->n);
 299                 BIO_printf(out,"\n");
 300                 }
 301
 302         if (check)
 303                 {
 304                 int r = RSA_check_key(rsa);
 305
 306                 if (r == 1)
 307                         BIO_printf(out,"RSA key ok\n");
 308                 else if (r == 0)
 309                         {
 310                         long err;
 311
 312                         while ((err = ERR_peek_error()) != 0 &&
 313                                 ERR_GET_LIB(err) == ERR_LIB_RSA &&
 314                                 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
 315                                 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
 316                                 {
 317                                 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
 318                                 ERR_get_error(); /* remove e from error stack */
 319                                 }
 320                         }
 321
 322                 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
 323                         {
 324                         ERR_print_errors(bio_err);
 325                         goto end;
 326                         }
 327                 }
 328
 329         if (noout)
 330                 {
 331                 ret = 0;
 332                 goto end;
 333                 }
 334         BIO_printf(bio_err,"writing RSA key\n");
 335         if      (outformat == FORMAT_ASN1) {
 336                 if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa);
 337                 else i=i2d_RSAPrivateKey_bio(out,rsa);
 338         }
 339 #ifndef OPENSSL_NO_RC4
 340         else if (outformat == FORMAT_NETSCAPE)
 341                 {
 342                 unsigned char *p,*pp;
 343                 int size;
 344
 345                 i=1;
 346                 size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
 347                 if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
 348                         {
 349                         BIO_printf(bio_err,"Memory allocation failure\n");
 350                         goto end;
 351                         }
 352                 pp=p;
 353                 i2d_RSA_NET(rsa,&p,NULL, sgckey);
 354                 BIO_write(out,(char *)pp,size);
 355                 OPENSSL_free(pp);
 356                 }
 357 #endif
 358         else if (outformat == FORMAT_PEM) {
 359                 if(pubout || pubin)
 360                     i=PEM_write_bio_RSA_PUBKEY(out,rsa);
 361                 else i=PEM_write_bio_RSAPrivateKey(out,rsa,
 362                                                 enc,NULL,0,NULL,passout);
 363         } else  {
 364                 BIO_printf(bio_err,"bad output format specified for outfile\n");
 365                 goto end;
 366                 }
 367         if (!i)
 368                 {
 369                 BIO_printf(bio_err,"unable to write key\n");
 370                 ERR_print_errors(bio_err);
 371                 }
 372         else
 373                 ret=0;
 374 end:
 375         if(out != NULL) BIO_free_all(out);
 376         if(rsa != NULL) RSA_free(rsa);
 377         if(passin) OPENSSL_free(passin);
 378         if(passout) OPENSSL_free(passout);
 379         apps_shutdown();
 380         OPENSSL_EXIT(ret);
 381         }
 382 #else /* !OPENSSL_NO_RSA */
 383
 384 # if PEDANTIC
 385 static void *dummy=&dummy;
 386 # endif
 387
 388 #endif