apps/rsautl.c

   1 /*
   2  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   3  * 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 #ifndef OPENSSL_NO_RSA
  61
  62 # include "apps.h"
  63 # include <string.h>
  64 # include <openssl/err.h>
  65 # include <openssl/pem.h>
  66 # include <openssl/rsa.h>
  67
  68 # define RSA_SIGN        1
  69 # define RSA_VERIFY      2
  70 # define RSA_ENCRYPT     3
  71 # define RSA_DECRYPT     4
  72
  73 # define KEY_PRIVKEY     1
  74 # define KEY_PUBKEY      2
  75 # define KEY_CERT        3
  76
  77 typedef enum OPTION_choice {
  78     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  79     OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
  80     OPT_RAW, OPT_OAEP, OPT_SSL, OPT_PKCS, OPT_X931,
  81     OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  82     OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM
  83 } OPTION_CHOICE;
  84
  85 OPTIONS rsautl_options[] = {
  86     {"help", OPT_HELP, '-', "Display this summary"},
  87     {"in", OPT_IN, '<', "Input file"},
  88     {"out", OPT_OUT, '>', "Output file"},
  89     {"inkey", OPT_INKEY, '<', "Input key"},
  90     {"keyform", OPT_KEYFORM, 'F', "Private key format - default PEM"},
  91     {"pubin", OPT_PUBIN, '-', "Input is an RSA public"},
  92     {"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
  93     {"ssl", OPT_SSL, '-', "Use SSL v2 padding"},
  94     {"raw", OPT_RAW, '-', "Use no padding"},
  95     {"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
  96     {"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
  97     {"sign", OPT_SIGN, '-', "Sign with private key"},
  98     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  99     {"asn1parse", OPT_ASN1PARSE, '-'},
 100     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
 101     {"x931", OPT_X931, '-', "Use ANSI X9.31 padding"},
 102     {"rev", OPT_REV, '-'},
 103     {"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
 104     {"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
 105     {"passin", OPT_PASSIN, 's', "Pass phrase source"},
 106 # ifndef OPENSSL_NO_ENGINE
 107     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 108 # endif
 109     {NULL}
 110 };
 111
 112 int rsautl_main(int argc, char **argv)
 113 {
 114     BIO *in = NULL, *out = NULL;
 115     ENGINE *e = NULL;
 116     EVP_PKEY *pkey = NULL;
 117     RSA *rsa = NULL;
 118     X509 *x;
 119     char *infile = NULL, *outfile = NULL, *keyfile = NULL;
 120     char *passinarg = NULL, *passin = NULL, *prog;
 121     char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
 122     unsigned char *rsa_in = NULL, *rsa_out = NULL, pad = RSA_PKCS1_PADDING;
 123     int rsa_inlen, keyformat = FORMAT_PEM, keysize, ret = 1;
 124     int rsa_outlen = 0, hexdump = 0, asn1parse = 0, need_priv = 0, rev = 0;
 125     OPTION_CHOICE o;
 126
 127     prog = opt_init(argc, argv, rsautl_options);
 128     while ((o = opt_next()) != OPT_EOF) {
 129         switch (o) {
 130         case OPT_EOF:
 131         case OPT_ERR:
 132  opthelp:
 133             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 134             goto end;
 135         case OPT_HELP:
 136             opt_help(rsautl_options);
 137             ret = 0;
 138             goto end;
 139         case OPT_KEYFORM:
 140             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
 141                 goto opthelp;
 142             break;
 143         case OPT_IN:
 144             infile = opt_arg();
 145             break;
 146         case OPT_OUT:
 147             outfile = opt_arg();
 148             break;
 149         case OPT_ENGINE:
 150             e = setup_engine(opt_arg(), 0);
 151             break;
 152         case OPT_ASN1PARSE:
 153             asn1parse = 1;
 154             break;
 155         case OPT_HEXDUMP:
 156             hexdump = 1;
 157             break;
 158         case OPT_RAW:
 159             pad = RSA_NO_PADDING;
 160             break;
 161         case OPT_OAEP:
 162             pad = RSA_PKCS1_OAEP_PADDING;
 163             break;
 164         case OPT_SSL:
 165             pad = RSA_SSLV23_PADDING;
 166             break;
 167         case OPT_PKCS:
 168             pad = RSA_PKCS1_PADDING;
 169             break;
 170         case OPT_X931:
 171             pad = RSA_X931_PADDING;
 172             break;
 173         case OPT_SIGN:
 174             rsa_mode = RSA_SIGN;
 175             need_priv = 1;
 176             break;
 177         case OPT_VERIFY:
 178             rsa_mode = RSA_VERIFY;
 179             break;
 180         case OPT_REV:
 181             rev = 1;
 182             break;
 183         case OPT_ENCRYPT:
 184             rsa_mode = RSA_ENCRYPT;
 185             break;
 186         case OPT_DECRYPT:
 187             rsa_mode = RSA_DECRYPT;
 188             need_priv = 1;
 189             break;
 190         case OPT_PUBIN:
 191             key_type = KEY_PUBKEY;
 192             break;
 193         case OPT_CERTIN:
 194             key_type = KEY_CERT;
 195             break;
 196         case OPT_INKEY:
 197             keyfile = opt_arg();
 198             break;
 199         case OPT_PASSIN:
 200             passinarg = opt_arg();
 201             break;
 202         }
 203     }
 204     argc = opt_num_rest();
 205     argv = opt_rest();
 206
 207     if (need_priv && (key_type != KEY_PRIVKEY)) {
 208         BIO_printf(bio_err, "A private key is needed for this operation\n");
 209         goto end;
 210     }
 211
 212     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 213         BIO_printf(bio_err, "Error getting password\n");
 214         goto end;
 215     }
 216
 217 /* FIXME: seed PRNG only if needed */
 218     app_RAND_load_file(NULL, 0);
 219
 220     switch (key_type) {
 221     case KEY_PRIVKEY:
 222         pkey = load_key(keyfile, keyformat, 0, passin, e, "Private Key");
 223         break;
 224
 225     case KEY_PUBKEY:
 226         pkey = load_pubkey(keyfile, keyformat, 0, NULL, e, "Public Key");
 227         break;
 228
 229     case KEY_CERT:
 230         x = load_cert(keyfile, keyformat, NULL, e, "Certificate");
 231         if (x) {
 232             pkey = X509_get_pubkey(x);
 233             X509_free(x);
 234         }
 235         break;
 236     }
 237
 238     if (!pkey) {
 239         return 1;
 240     }
 241
 242     rsa = EVP_PKEY_get1_RSA(pkey);
 243     EVP_PKEY_free(pkey);
 244
 245     if (!rsa) {
 246         BIO_printf(bio_err, "Error getting RSA key\n");
 247         ERR_print_errors(bio_err);
 248         goto end;
 249     }
 250
 251     in = bio_open_default(infile, "rb");
 252     if (in == NULL)
 253         goto end;
 254     out = bio_open_default(outfile, "wb");
 255     if (out == NULL)
 256         goto end;
 257
 258     keysize = RSA_size(rsa);
 259
 260     rsa_in = app_malloc(keysize * 2, "hold rsa key");
 261     rsa_out = app_malloc(keysize, "output rsa key");
 262
 263     /* Read the input data */
 264     rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 265     if (rsa_inlen <= 0) {
 266         BIO_printf(bio_err, "Error reading input Data\n");
 267         goto end;
 268     }
 269     if (rev) {
 270         int i;
 271         unsigned char ctmp;
 272         for (i = 0; i < rsa_inlen / 2; i++) {
 273             ctmp = rsa_in[i];
 274             rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 275             rsa_in[rsa_inlen - 1 - i] = ctmp;
 276         }
 277     }
 278     switch (rsa_mode) {
 279
 280     case RSA_VERIFY:
 281         rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 282         break;
 283
 284     case RSA_SIGN:
 285         rsa_outlen =
 286             RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 287         break;
 288
 289     case RSA_ENCRYPT:
 290         rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 291         break;
 292
 293     case RSA_DECRYPT:
 294         rsa_outlen =
 295             RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 296         break;
 297
 298     }
 299
 300     if (rsa_outlen <= 0) {
 301         BIO_printf(bio_err, "RSA operation error\n");
 302         ERR_print_errors(bio_err);
 303         goto end;
 304     }
 305     ret = 0;
 306     if (asn1parse) {
 307         if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 308             ERR_print_errors(bio_err);
 309         }
 310     } else if (hexdump)
 311         BIO_dump(out, (char *)rsa_out, rsa_outlen);
 312     else
 313         BIO_write(out, rsa_out, rsa_outlen);
 314  end:
 315     RSA_free(rsa);
 316     BIO_free(in);
 317     BIO_free_all(out);
 318     if (rsa_in)
 319         OPENSSL_free(rsa_in);
 320     if (rsa_out)
 321         OPENSSL_free(rsa_out);
 322     if (passin)
 323         OPENSSL_free(passin);
 324     return ret;
 325 }
 326
 327 #else                           /* !OPENSSL_NO_RSA */
 328
 329 # if PEDANTIC
 330 static void *dummy = &dummy;
 331 # endif
 332
 333 #endif