bin/openssl/rsautl.c

   1 /* $OpenBSD: rsautl.c,v 1.13 2018/02/07 05:47:55 jsing Exp $ */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project 2000.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <openssl/opensslconf.h>
  60
  61
  62 #include <string.h>
  63
  64 #include "apps.h"
  65
  66 #include <openssl/err.h>
  67 #include <openssl/pem.h>
  68 #include <openssl/rsa.h>
  69
  70 #define RSA_SIGN        1
  71 #define RSA_VERIFY      2
  72 #define RSA_ENCRYPT     3
  73 #define RSA_DECRYPT     4
  74
  75 #define KEY_PRIVKEY     1
  76 #define KEY_PUBKEY      2
  77 #define KEY_CERT        3
  78
  79 static void usage(void);
  80
  81 int
  82 rsautl_main(int argc, char **argv)
  83 {
  84         BIO *in = NULL, *out = NULL;
  85         char *infile = NULL, *outfile = NULL;
  86         char *keyfile = NULL;
  87         char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  88         int keyform = FORMAT_PEM;
  89         char need_priv = 0, badarg = 0, rev = 0;
  90         char hexdump = 0, asn1parse = 0;
  91         X509 *x;
  92         EVP_PKEY *pkey = NULL;
  93         RSA *rsa = NULL;
  94         unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
  95         char *passargin = NULL, *passin = NULL;
  96         int rsa_inlen, rsa_outlen = 0;
  97         int keysize;
  98
  99         int ret = 1;
 100
 101         if (single_execution) {
 102                 if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
 103                         perror("pledge");
 104                         exit(1);
 105                 }
 106         }
 107
 108         argc--;
 109         argv++;
 110
 111         pad = RSA_PKCS1_PADDING;
 112
 113         while (argc >= 1) {
 114                 if (!strcmp(*argv, "-in")) {
 115                         if (--argc < 1)
 116                                 badarg = 1;
 117                         else
 118                                 infile = *(++argv);
 119                 } else if (!strcmp(*argv, "-out")) {
 120                         if (--argc < 1)
 121                                 badarg = 1;
 122                         else
 123                                 outfile = *(++argv);
 124                 } else if (!strcmp(*argv, "-inkey")) {
 125                         if (--argc < 1)
 126                                 badarg = 1;
 127                         else
 128                                 keyfile = *(++argv);
 129                 } else if (!strcmp(*argv, "-passin")) {
 130                         if (--argc < 1)
 131                                 badarg = 1;
 132                         else
 133                                 passargin = *(++argv);
 134                 } else if (strcmp(*argv, "-keyform") == 0) {
 135                         if (--argc < 1)
 136                                 badarg = 1;
 137                         else
 138                                 keyform = str2fmt(*(++argv));
 139                 } else if (!strcmp(*argv, "-pubin")) {
 140                         key_type = KEY_PUBKEY;
 141                 } else if (!strcmp(*argv, "-certin")) {
 142                         key_type = KEY_CERT;
 143                 } else if (!strcmp(*argv, "-asn1parse"))
 144                         asn1parse = 1;
 145                 else if (!strcmp(*argv, "-hexdump"))
 146                         hexdump = 1;
 147                 else if (!strcmp(*argv, "-raw"))
 148                         pad = RSA_NO_PADDING;
 149                 else if (!strcmp(*argv, "-oaep"))
 150                         pad = RSA_PKCS1_OAEP_PADDING;
 151                 else if (!strcmp(*argv, "-pkcs"))
 152                         pad = RSA_PKCS1_PADDING;
 153                 else if (!strcmp(*argv, "-x931"))
 154                         pad = RSA_X931_PADDING;
 155                 else if (!strcmp(*argv, "-sign")) {
 156                         rsa_mode = RSA_SIGN;
 157                         need_priv = 1;
 158                 } else if (!strcmp(*argv, "-verify"))
 159                         rsa_mode = RSA_VERIFY;
 160                 else if (!strcmp(*argv, "-rev"))
 161                         rev = 1;
 162                 else if (!strcmp(*argv, "-encrypt"))
 163                         rsa_mode = RSA_ENCRYPT;
 164                 else if (!strcmp(*argv, "-decrypt")) {
 165                         rsa_mode = RSA_DECRYPT;
 166                         need_priv = 1;
 167                 } else
 168                         badarg = 1;
 169                 if (badarg) {
 170                         usage();
 171                         goto end;
 172                 }
 173                 argc--;
 174                 argv++;
 175         }
 176
 177         if (need_priv && (key_type != KEY_PRIVKEY)) {
 178                 BIO_printf(bio_err, "A private key is needed for this operation\n");
 179                 goto end;
 180         }
 181         if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
 182                 BIO_printf(bio_err, "Error getting password\n");
 183                 goto end;
 184         }
 185
 186         switch (key_type) {
 187         case KEY_PRIVKEY:
 188                 pkey = load_key(bio_err, keyfile, keyform, 0,
 189                     passin, "Private Key");
 190                 break;
 191
 192         case KEY_PUBKEY:
 193                 pkey = load_pubkey(bio_err, keyfile, keyform, 0,
 194                     NULL, "Public Key");
 195                 break;
 196
 197         case KEY_CERT:
 198                 x = load_cert(bio_err, keyfile, keyform,
 199                     NULL, "Certificate");
 200                 if (x) {
 201                         pkey = X509_get_pubkey(x);
 202                         X509_free(x);
 203                 }
 204                 break;
 205         }
 206
 207         if (!pkey)
 208                 goto end;
 209
 210         rsa = EVP_PKEY_get1_RSA(pkey);
 211         EVP_PKEY_free(pkey);
 212
 213         if (!rsa) {
 214                 BIO_printf(bio_err, "Error getting RSA key\n");
 215                 ERR_print_errors(bio_err);
 216                 goto end;
 217         }
 218         if (infile) {
 219                 if (!(in = BIO_new_file(infile, "rb"))) {
 220                         BIO_printf(bio_err, "Error Reading Input File\n");
 221                         ERR_print_errors(bio_err);
 222                         goto end;
 223                 }
 224         } else
 225                 in = BIO_new_fp(stdin, BIO_NOCLOSE);
 226
 227         if (outfile) {
 228                 if (!(out = BIO_new_file(outfile, "wb"))) {
 229                         BIO_printf(bio_err, "Error Reading Output File\n");
 230                         ERR_print_errors(bio_err);
 231                         goto end;
 232                 }
 233         } else {
 234                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 235         }
 236
 237         keysize = RSA_size(rsa);
 238
 239         rsa_in = reallocarray(NULL, keysize, 2);
 240         if (rsa_in == NULL) {
 241                 BIO_printf(bio_err, "Error allocating memory for input data\n");
 242                 exit(1);
 243         }
 244         rsa_out = malloc(keysize);
 245         if (rsa_out == NULL) {
 246                 BIO_printf(bio_err, "Error allocating memory for output data\n");
 247                 exit(1);
 248         }
 249
 250         /* Read the input data */
 251         rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 252         if (rsa_inlen <= 0) {
 253                 BIO_printf(bio_err, "Error reading input Data\n");
 254                 exit(1);
 255         }
 256         if (rev) {
 257                 int i;
 258                 unsigned char ctmp;
 259                 for (i = 0; i < rsa_inlen / 2; i++) {
 260                         ctmp = rsa_in[i];
 261                         rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 262                         rsa_in[rsa_inlen - 1 - i] = ctmp;
 263                 }
 264         }
 265         switch (rsa_mode) {
 266
 267         case RSA_VERIFY:
 268                 rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 269                 break;
 270
 271         case RSA_SIGN:
 272                 rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 273                 break;
 274
 275         case RSA_ENCRYPT:
 276                 rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 277                 break;
 278
 279         case RSA_DECRYPT:
 280                 rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 281                 break;
 282
 283         }
 284
 285         if (rsa_outlen <= 0) {
 286                 BIO_printf(bio_err, "RSA operation error\n");
 287                 ERR_print_errors(bio_err);
 288                 goto end;
 289         }
 290         ret = 0;
 291         if (asn1parse) {
 292                 if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 293                         ERR_print_errors(bio_err);
 294                 }
 295         } else if (hexdump)
 296                 BIO_dump(out, (char *) rsa_out, rsa_outlen);
 297         else
 298                 BIO_write(out, rsa_out, rsa_outlen);
 299
 300  end:
 301         RSA_free(rsa);
 302         BIO_free(in);
 303         BIO_free_all(out);
 304         free(rsa_in);
 305         free(rsa_out);
 306         free(passin);
 307
 308         return ret;
 309 }
 310
 311 static void
 312 usage()
 313 {
 314         BIO_printf(bio_err, "Usage: rsautl [options]\n");
 315         BIO_printf(bio_err, "-in file        input file\n");
 316         BIO_printf(bio_err, "-out file       output file\n");
 317         BIO_printf(bio_err, "-inkey file     input key\n");
 318         BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
 319         BIO_printf(bio_err, "-pubin          input is an RSA public\n");
 320         BIO_printf(bio_err, "-certin         input is a certificate carrying an RSA public key\n");
 321         BIO_printf(bio_err, "-ssl            use SSL v2 padding\n");
 322         BIO_printf(bio_err, "-raw            use no padding\n");
 323         BIO_printf(bio_err, "-pkcs           use PKCS#1 v1.5 padding (default)\n");
 324         BIO_printf(bio_err, "-oaep           use PKCS#1 OAEP\n");
 325         BIO_printf(bio_err, "-sign           sign with private key\n");
 326         BIO_printf(bio_err, "-verify         verify with public key\n");
 327         BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
 328         BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
 329         BIO_printf(bio_err, "-hexdump        hex dump output\n");
 330 }