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 #ifndef OPENSSL_NO_RSA
 108 # include <stdio.h>
 109 # include <stdlib.h>
 110 # include <string.h>
 111 # include <time.h>
 112 # include "apps.h"
 113 # include <openssl/bio.h>
 114 # include <openssl/err.h>
 115 # include <openssl/rsa.h>
 116 # include <openssl/evp.h>
 117 # include <openssl/x509.h>
 118 # include <openssl/pem.h>
 119 # include <openssl/bn.h>
 120
 121 typedef enum OPTION_choice {
 122     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
 123     OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
 124     OPT_PUBIN, OPT_PUBOUT, OPT_PASSOUT, OPT_PASSIN,
 125     OPT_RSAPUBKEY_IN, OPT_RSAPUBKEY_OUT, OPT_PVK_STRONG, OPT_PVK_WEAK,
 126     OPT_PVK_NONE, OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_CHECK, OPT_CIPHER
 127 } OPTION_CHOICE;
 128
 129 OPTIONS rsa_options[] = {
 130     {"help", OPT_HELP, '-', "Display this summary"},
 131     {"inform", OPT_INFORM, 'f', "Input format, one of DER NET PEM"},
 132     {"outform", OPT_OUTFORM, 'f', "Output format, one of DER NET PEM PVK"},
 133     {"in", OPT_IN, '<', "Input file"},
 134     {"out", OPT_OUT, '>', "Output file"},
 135     {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
 136     {"pubout", OPT_PUBOUT, '-', "Output a public key"},
 137     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
 138     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
 139     {"RSAPublicKey_in", OPT_RSAPUBKEY_IN, '-', "Input is an RSAPublicKey"},
 140     {"RSAPublicKey_out", OPT_RSAPUBKEY_OUT, '-', "Output is an RSAPublicKey"},
 141     {"pvk-strong", OPT_PVK_STRONG, '-'},
 142     {"pvk-weak", OPT_PVK_WEAK, '-'},
 143     {"pvk-none", OPT_PVK_NONE, '-'},
 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 # ifndef OPENSSL_NO_ENGINE
 150     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 151 # endif
 152     {NULL}
 153 };
 154
 155 int rsa_main(int argc, char **argv)
 156 {
 157     ENGINE *e = NULL;
 158     BIO *out = NULL;
 159     RSA *rsa = NULL;
 160     const EVP_CIPHER *enc = NULL;
 161     char *infile = NULL, *outfile = NULL, *prog;
 162     char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
 163     int i;
 164     int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, check = 0;
 165     int noout = 0, modulus = 0, pubin = 0, pubout = 0, pvk_encr = 2, ret = 1;
 166     OPTION_CHOICE o;
 167
 168     prog = opt_init(argc, argv, rsa_options);
 169     while ((o = opt_next()) != OPT_EOF) {
 170         switch (o) {
 171         case OPT_EOF:
 172         case OPT_ERR:
 173 #ifdef OPENSSL_NO_RC4
 174         case OPT_PVK_STRONG:
 175         case OPT_PVK_WEAK:
 176         case OPT_PVK_NONE:
 177 #endif
 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 #endif
 231         case OPT_NOOUT:
 232             noout = 1;
 233             break;
 234         case OPT_TEXT:
 235             text = 1;
 236             break;
 237         case OPT_MODULUS:
 238             modulus = 1;
 239             break;
 240         case OPT_CHECK:
 241             check = 1;
 242             break;
 243         case OPT_CIPHER:
 244             if (!opt_cipher(opt_unknown(), &enc))
 245                 goto opthelp;
 246             break;
 247         }
 248     }
 249     argc = opt_num_rest();
 250     argv = opt_rest();
 251
 252     if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
 253         BIO_printf(bio_err, "Error getting passwords\n");
 254         goto end;
 255     }
 256
 257     if (check && pubin) {
 258         BIO_printf(bio_err, "Only private keys can be checked\n");
 259         goto end;
 260     }
 261
 262     {
 263         EVP_PKEY *pkey;
 264
 265         if (pubin) {
 266             int tmpformat = -1;
 267             if (pubin == 2) {
 268                 if (informat == FORMAT_PEM)
 269                     tmpformat = FORMAT_PEMRSA;
 270                 else if (informat == FORMAT_ASN1)
 271                     tmpformat = FORMAT_ASN1RSA;
 272             } else
 273                 tmpformat = informat;
 274
 275             pkey = load_pubkey(infile, tmpformat, 1, passin, e, "Public Key");
 276         } else
 277             pkey = load_key(infile, informat, 1, passin, e, "Private Key");
 278
 279         if (pkey != NULL)
 280             rsa = EVP_PKEY_get1_RSA(pkey);
 281         EVP_PKEY_free(pkey);
 282     }
 283
 284     if (rsa == NULL) {
 285         ERR_print_errors(bio_err);
 286         goto end;
 287     }
 288
 289     out = bio_open_default(outfile, "w");
 290     if (out == NULL)
 291         goto end;
 292
 293     if (text)
 294         if (!RSA_print(out, rsa, 0)) {
 295             perror(outfile);
 296             ERR_print_errors(bio_err);
 297             goto end;
 298         }
 299
 300     if (modulus) {
 301         BIO_printf(out, "Modulus=");
 302         BN_print(out, rsa->n);
 303         BIO_printf(out, "\n");
 304     }
 305
 306     if (check) {
 307         int r = RSA_check_key(rsa);
 308
 309         if (r == 1)
 310             BIO_printf(out, "RSA key ok\n");
 311         else if (r == 0) {
 312             unsigned long err;
 313
 314             while ((err = ERR_peek_error()) != 0 &&
 315                    ERR_GET_LIB(err) == ERR_LIB_RSA &&
 316                    ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
 317                    ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) {
 318                 BIO_printf(out, "RSA key error: %s\n",
 319                            ERR_reason_error_string(err));
 320                 ERR_get_error(); /* remove e from error stack */
 321             }
 322         }
 323
 324         /* should happen only if r == -1 */
 325         if (r == -1 || ERR_peek_error() != 0) {
 326             ERR_print_errors(bio_err);
 327             goto end;
 328         }
 329     }
 330
 331     if (noout) {
 332         ret = 0;
 333         goto end;
 334     }
 335     BIO_printf(bio_err, "writing RSA key\n");
 336     if (outformat == FORMAT_ASN1) {
 337         if (pubout || pubin) {
 338             if (pubout == 2)
 339                 i = i2d_RSAPublicKey_bio(out, rsa);
 340             else
 341                 i = i2d_RSA_PUBKEY_bio(out, rsa);
 342         } else
 343             i = i2d_RSAPrivateKey_bio(out, rsa);
 344     }
 345 # ifndef OPENSSL_NO_RC4
 346     else if (outformat == FORMAT_NETSCAPE) {
 347         unsigned char *p, *save;
 348         int size = i2d_RSA_NET(rsa, NULL, NULL, 0);
 349
 350         save = p = app_malloc(size, "RSA i2d buffer");
 351         i2d_RSA_NET(rsa, &p, NULL, 0);
 352         BIO_write(out, (char *)save, size);
 353         OPENSSL_free(save);
 354         i = 1;
 355     }
 356 # endif
 357     else if (outformat == FORMAT_PEM) {
 358         if (pubout || pubin) {
 359             if (pubout == 2)
 360                 i = PEM_write_bio_RSAPublicKey(out, rsa);
 361             else
 362                 i = PEM_write_bio_RSA_PUBKEY(out, rsa);
 363         } else
 364             i = PEM_write_bio_RSAPrivateKey(out, rsa,
 365                                             enc, NULL, 0, NULL, passout);
 366 # if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
 367     } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
 368         EVP_PKEY *pk;
 369         pk = EVP_PKEY_new();
 370         EVP_PKEY_set1_RSA(pk, rsa);
 371         if (outformat == FORMAT_PVK)
 372             i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
 373         else if (pubin || pubout)
 374             i = i2b_PublicKey_bio(out, pk);
 375         else
 376             i = i2b_PrivateKey_bio(out, pk);
 377         EVP_PKEY_free(pk);
 378 # endif
 379     } else {
 380         BIO_printf(bio_err, "bad output format specified for outfile\n");
 381         goto end;
 382     }
 383     if (i <= 0) {
 384         BIO_printf(bio_err, "unable to write key\n");
 385         ERR_print_errors(bio_err);
 386     } else
 387         ret = 0;
 388  end:
 389     BIO_free_all(out);
 390     RSA_free(rsa);
 391     if (passin)
 392         OPENSSL_free(passin);
 393     if (passout)
 394         OPENSSL_free(passout);
 395     return (ret);
 396 }
 397 #else                           /* !OPENSSL_NO_RSA */
 398
 399 # if PEDANTIC
 400 static void *dummy = &dummy;
 401 # endif
 402
 403 #endif