apps/rsa.c

   1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   2  * All rights reserved.
   3  *
   4  * This package is an SSL implementation written
   5  * by Eric Young (eay@cryptsoft.com).
   6  * The implementation was written so as to conform with Netscapes SSL.
   7  *
   8  * This library is free for commercial and non-commercial use as long as
   9  * the following conditions are aheared to.  The following conditions
  10  * apply to all code found in this distribution, be it the RC4, RSA,
  11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  12  * included with this distribution is covered by the same copyright terms
  13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14  *
  15  * Copyright remains Eric Young's, and as such any Copyright notices in
  16  * the code are not to be removed.
  17  * If this package is used in a product, Eric Young should be given attribution
  18  * as the author of the parts of the library used.
  19  * This can be in the form of a textual message at program startup or
  20  * in documentation (online or textual) provided with the package.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *    "This product includes cryptographic software written by
  33  *     Eric Young (eay@cryptsoft.com)"
  34  *    The word 'cryptographic' can be left out if the rouines from the library
  35  *    being used are not cryptographic related :-).
  36  * 4. If you include any Windows specific code (or a derivative thereof) from
  37  *    the apps directory (application code) you must include an acknowledgement:
  38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  *
  52  * The licence and distribution terms for any publically available version or
  53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  54  * copied and put under another distribution licence
  55  * [including the GNU Public Licence.]
  56  */
  57 /* ====================================================================
  58  * Copyright (c) 1999-2015 The OpenSSL Project.  All rights reserved.
  59  *
  60  * Redistribution and use in source and binary forms, with or without
  61  * modification, are permitted provided that the following conditions
  62  * are met:
  63  *
  64  * 1. Redistributions of source code must retain the above copyright
  65  *    notice, this list of conditions and the following disclaimer.
  66  *
  67  * 2. Redistributions in binary form must reproduce the above copyright
  68  *    notice, this list of conditions and the following disclaimer in
  69  *    the documentation and/or other materials provided with the
  70  *    distribution.
  71  *
  72  * 3. All advertising materials mentioning features or use of this
  73  *    software must display the following acknowledgment:
  74  *    "This product includes software developed by the OpenSSL Project
  75  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  76  *
  77  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  78  *    endorse or promote products derived from this software without
  79  *    prior written permission. For written permission, please contact
  80  *    licensing@OpenSSL.org.
  81  *
  82  * 5. Products derived from this software may not be called "OpenSSL"
  83  *    nor may "OpenSSL" appear in their names without prior written
  84  *    permission of the OpenSSL Project.
  85  *
  86  * 6. Redistributions of any form whatsoever must retain the following
  87  *    acknowledgment:
  88  *    "This product includes software developed by the OpenSSL Project
  89  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  90  *
  91  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  92  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  93  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  94  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  95  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  96  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  97  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  98  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  99  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 100  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 101  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 102  * OF THE POSSIBILITY OF SUCH DAMAGE.
 103  * ====================================================================
 104  */
 105
 106 #include <openssl/opensslconf.h>
 107 #ifdef OPENSSL_NO_RSA
 108 NON_EMPTY_TRANSLATION_UNIT
 109 #else
 110
 111 # include <stdio.h>
 112 # include <stdlib.h>
 113 # include <string.h>
 114 # include <time.h>
 115 # include "apps.h"
 116 # include <openssl/bio.h>
 117 # include <openssl/err.h>
 118 # include <openssl/rsa.h>
 119 # include <openssl/evp.h>
 120 # include <openssl/x509.h>
 121 # include <openssl/pem.h>
 122 # include <openssl/bn.h>
 123
 124 typedef enum OPTION_choice {
 125     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
 126     OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
 127     OPT_PUBIN, OPT_PUBOUT, OPT_PASSOUT, OPT_PASSIN,
 128     OPT_RSAPUBKEY_IN, OPT_RSAPUBKEY_OUT, OPT_PVK_STRONG, OPT_PVK_WEAK,
 129     OPT_PVK_NONE, OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_CHECK, OPT_CIPHER
 130 } OPTION_CHOICE;
 131
 132 OPTIONS rsa_options[] = {
 133     {"help", OPT_HELP, '-', "Display this summary"},
 134     {"inform", OPT_INFORM, 'f', "Input format, one of DER NET PEM"},
 135     {"outform", OPT_OUTFORM, 'f', "Output format, one of DER NET PEM PVK"},
 136     {"in", OPT_IN, 's', "Input file"},
 137     {"out", OPT_OUT, '>', "Output file"},
 138     {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
 139     {"pubout", OPT_PUBOUT, '-', "Output a public key"},
 140     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
 141     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
 142     {"RSAPublicKey_in", OPT_RSAPUBKEY_IN, '-', "Input is an RSAPublicKey"},
 143     {"RSAPublicKey_out", OPT_RSAPUBKEY_OUT, '-', "Output is an RSAPublicKey"},
 144     {"noout", OPT_NOOUT, '-', "Don't print key out"},
 145     {"text", OPT_TEXT, '-', "Print the key in text"},
 146     {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
 147     {"check", OPT_CHECK, '-', "Verify key consistency"},
 148     {"", OPT_CIPHER, '-', "Any supported cipher"},
 149 # ifdef OPENSSL_NO_RC4
 150     {"pvk-strong", OPT_PVK_STRONG, '-'},
 151     {"pvk-weak", OPT_PVK_WEAK, '-'},
 152     {"pvk-none", OPT_PVK_NONE, '-'},
 153 # endif
 154 # ifndef OPENSSL_NO_ENGINE
 155     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 156 # endif
 157     {NULL}
 158 };
 159
 160 int rsa_main(int argc, char **argv)
 161 {
 162     ENGINE *e = NULL;
 163     BIO *out = NULL;
 164     RSA *rsa = NULL;
 165     const EVP_CIPHER *enc = NULL;
 166     char *infile = NULL, *outfile = NULL, *prog;
 167     char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
 168     int i, private = 0;
 169     int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, check = 0;
 170     int noout = 0, modulus = 0, pubin = 0, pubout = 0, pvk_encr = 2, ret = 1;
 171     OPTION_CHOICE o;
 172
 173     prog = opt_init(argc, argv, rsa_options);
 174     while ((o = opt_next()) != OPT_EOF) {
 175         switch (o) {
 176         case OPT_EOF:
 177         case OPT_ERR:
 178  opthelp:
 179             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 180             goto end;
 181         case OPT_HELP:
 182             opt_help(rsa_options);
 183             ret = 0;
 184             goto end;
 185         case OPT_INFORM:
 186             if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
 187                 goto opthelp;
 188             break;
 189         case OPT_IN:
 190             infile = opt_arg();
 191             break;
 192         case OPT_OUTFORM:
 193             if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
 194                 goto opthelp;
 195             break;
 196         case OPT_OUT:
 197             outfile = opt_arg();
 198             break;
 199         case OPT_PASSIN:
 200             passinarg = opt_arg();
 201             break;
 202         case OPT_PASSOUT:
 203             passoutarg = opt_arg();
 204             break;
 205         case OPT_ENGINE:
 206             e = setup_engine(opt_arg(), 0);
 207             break;
 208         case OPT_PUBIN:
 209             pubin = 1;
 210             break;
 211         case OPT_PUBOUT:
 212             pubout = 1;
 213             break;
 214         case OPT_RSAPUBKEY_IN:
 215             pubin = 2;
 216             break;
 217         case OPT_RSAPUBKEY_OUT:
 218             pubout = 2;
 219             break;
 220 #ifndef OPENSSL_NO_RC4
 221         case OPT_PVK_STRONG:
 222             pvk_encr = 2;
 223             break;
 224         case OPT_PVK_WEAK:
 225             pvk_encr = 1;
 226             break;
 227         case OPT_PVK_NONE:
 228             pvk_encr = 0;
 229             break;
 230 #else
 231         case OPT_PVK_STRONG:
 232         case OPT_PVK_WEAK:
 233         case OPT_PVK_NONE:
 234             break;
 235 #endif
 236         case OPT_NOOUT:
 237             noout = 1;
 238             break;
 239         case OPT_TEXT:
 240             text = 1;
 241             break;
 242         case OPT_MODULUS:
 243             modulus = 1;
 244             break;
 245         case OPT_CHECK:
 246             check = 1;
 247             break;
 248         case OPT_CIPHER:
 249             if (!opt_cipher(opt_unknown(), &enc))
 250                 goto opthelp;
 251             break;
 252         }
 253     }
 254     argc = opt_num_rest();
 255     if (argc != 0)
 256         goto opthelp;
 257
 258     private = (text && !pubin) || (!pubout && !noout) ? 1 : 0;
 259
 260     if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
 261         BIO_printf(bio_err, "Error getting passwords\n");
 262         goto end;
 263     }
 264     if (check && pubin) {
 265         BIO_printf(bio_err, "Only private keys can be checked\n");
 266         goto end;
 267     }
 268
 269     {
 270         EVP_PKEY *pkey;
 271
 272         if (pubin) {
 273             int tmpformat = -1;
 274             if (pubin == 2) {
 275                 if (informat == FORMAT_PEM)
 276                     tmpformat = FORMAT_PEMRSA;
 277                 else if (informat == FORMAT_ASN1)
 278                     tmpformat = FORMAT_ASN1RSA;
 279             } else
 280                 tmpformat = informat;
 281
 282             pkey = load_pubkey(infile, tmpformat, 1, passin, e, "Public Key");
 283         } else
 284             pkey = load_key(infile, informat, 1, passin, e, "Private Key");
 285
 286         if (pkey != NULL)
 287             rsa = EVP_PKEY_get1_RSA(pkey);
 288         EVP_PKEY_free(pkey);
 289     }
 290
 291     if (rsa == NULL) {
 292         ERR_print_errors(bio_err);
 293         goto end;
 294     }
 295
 296     out = bio_open_owner(outfile, outformat, private);
 297     if (out == NULL)
 298         goto end;
 299
 300     if (text) {
 301         assert(pubin || private);
 302         if (!RSA_print(out, rsa, 0)) {
 303             perror(outfile);
 304             ERR_print_errors(bio_err);
 305             goto end;
 306         }
 307     }
 308
 309     if (modulus) {
 310         BIO_printf(out, "Modulus=");
 311         BN_print(out, rsa->n);
 312         BIO_printf(out, "\n");
 313     }
 314
 315     if (check) {
 316         int r = RSA_check_key(rsa);
 317
 318         if (r == 1)
 319             BIO_printf(out, "RSA key ok\n");
 320         else if (r == 0) {
 321             unsigned long err;
 322
 323             while ((err = ERR_peek_error()) != 0 &&
 324                    ERR_GET_LIB(err) == ERR_LIB_RSA &&
 325                    ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
 326                    ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) {
 327                 BIO_printf(out, "RSA key error: %s\n",
 328                            ERR_reason_error_string(err));
 329                 ERR_get_error(); /* remove e from error stack */
 330             }
 331         }
 332
 333         /* should happen only if r == -1 */
 334         if (r == -1 || ERR_peek_error() != 0) {
 335             ERR_print_errors(bio_err);
 336             goto end;
 337         }
 338     }
 339
 340     if (noout) {
 341         ret = 0;
 342         goto end;
 343     }
 344     BIO_printf(bio_err, "writing RSA key\n");
 345     if (outformat == FORMAT_ASN1) {
 346         if (pubout || pubin) {
 347             if (pubout == 2)
 348                 i = i2d_RSAPublicKey_bio(out, rsa);
 349             else
 350                 i = i2d_RSA_PUBKEY_bio(out, rsa);
 351         } else {
 352             assert(private);
 353             i = i2d_RSAPrivateKey_bio(out, rsa);
 354         }
 355     }
 356     else if (outformat == FORMAT_PEM) {
 357         if (pubout || pubin) {
 358             if (pubout == 2)
 359                 i = PEM_write_bio_RSAPublicKey(out, rsa);
 360             else
 361                 i = PEM_write_bio_RSA_PUBKEY(out, rsa);
 362         } else {
 363             assert(private);
 364             i = PEM_write_bio_RSAPrivateKey(out, rsa,
 365                                             enc, NULL, 0, NULL, passout);
 366         }
 367 # if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
 368     } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
 369         EVP_PKEY *pk;
 370         pk = EVP_PKEY_new();
 371         EVP_PKEY_set1_RSA(pk, rsa);
 372         if (outformat == FORMAT_PVK) {
 373             if (pubin) {
 374                 BIO_printf(bio_err, "PVK form impossible with public key input\n");
 375                 EVP_PKEY_free(pk);
 376                 goto end;
 377             }
 378             assert(private);
 379             i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
 380         } else if (pubin || pubout) {
 381             i = i2b_PublicKey_bio(out, pk);
 382         } else {
 383             assert(private);
 384             i = i2b_PrivateKey_bio(out, pk);
 385         }
 386         EVP_PKEY_free(pk);
 387 # endif
 388     } else {
 389         BIO_printf(bio_err, "bad output format specified for outfile\n");
 390         goto end;
 391     }
 392     if (i <= 0) {
 393         BIO_printf(bio_err, "unable to write key\n");
 394         ERR_print_errors(bio_err);
 395     } else
 396         ret = 0;
 397  end:
 398     BIO_free_all(out);
 399     RSA_free(rsa);
 400     OPENSSL_free(passin);
 401     OPENSSL_free(passout);
 402     return (ret);
 403 }
 404 #endif