crypto/openssl-0.9/apps/rsautl.c

   1 /* rsautl.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 #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 static void usage(void);
  78
  79 #undef PROG
  80
  81 #define PROG rsautl_main
  82
  83 int MAIN(int argc, char **);
  84
  85 int MAIN(int argc, char **argv)
  86 {
  87         ENGINE *e = NULL;
  88         BIO *in = NULL, *out = NULL;
  89         char *infile = NULL, *outfile = NULL;
  90 #ifndef OPENSSL_NO_ENGINE
  91         char *engine = NULL;
  92 #endif
  93         char *keyfile = NULL;
  94         char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  95         int keyform = FORMAT_PEM;
  96         char need_priv = 0, badarg = 0, rev = 0;
  97         char hexdump = 0, asn1parse = 0;
  98         X509 *x;
  99         EVP_PKEY *pkey = NULL;
 100         RSA *rsa = NULL;
 101         unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
 102         char *passargin = NULL, *passin = NULL;
 103         int rsa_inlen, rsa_outlen = 0;
 104         int keysize;
 105
 106         int ret = 1;
 107
 108         argc--;
 109         argv++;
 110
 111         if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 112
 113         if (!load_config(bio_err, NULL))
 114                 goto end;
 115         ERR_load_crypto_strings();
 116         OpenSSL_add_all_algorithms();
 117         pad = RSA_PKCS1_PADDING;
 118
 119         while(argc >= 1)
 120         {
 121                 if (!strcmp(*argv,"-in")) {
 122                         if (--argc < 1) badarg = 1;
 123                         infile= *(++argv);
 124                 } else if (!strcmp(*argv,"-out")) {
 125                         if (--argc < 1) badarg = 1;
 126                         outfile= *(++argv);
 127                 } else if(!strcmp(*argv, "-inkey")) {
 128                         if (--argc < 1) badarg = 1;
 129                         keyfile = *(++argv);
 130                 } else if (!strcmp(*argv,"-passin")) {
 131                         if (--argc < 1) badarg = 1;
 132                         passargin= *(++argv);
 133                 } else if (strcmp(*argv,"-keyform") == 0) {
 134                         if (--argc < 1) badarg = 1;
 135                         keyform=str2fmt(*(++argv));
 136 #ifndef OPENSSL_NO_ENGINE
 137                 } else if(!strcmp(*argv, "-engine")) {
 138                         if (--argc < 1) badarg = 1;
 139                         engine = *(++argv);
 140 #endif
 141                 } else if(!strcmp(*argv, "-pubin")) {
 142                         key_type = KEY_PUBKEY;
 143                 } else if(!strcmp(*argv, "-certin")) {
 144                         key_type = KEY_CERT;
 145                 }
 146                 else if(!strcmp(*argv, "-asn1parse")) asn1parse = 1;
 147                 else if(!strcmp(*argv, "-hexdump")) hexdump = 1;
 148                 else if(!strcmp(*argv, "-raw")) pad = RSA_NO_PADDING;
 149                 else if(!strcmp(*argv, "-oaep")) pad = RSA_PKCS1_OAEP_PADDING;
 150                 else if(!strcmp(*argv, "-ssl")) pad = RSA_SSLV23_PADDING;
 151                 else if(!strcmp(*argv, "-pkcs")) pad = RSA_PKCS1_PADDING;
 152                 else if(!strcmp(*argv, "-x931")) pad = RSA_X931_PADDING;
 153                 else if(!strcmp(*argv, "-sign")) {
 154                         rsa_mode = RSA_SIGN;
 155                         need_priv = 1;
 156                 } else if(!strcmp(*argv, "-verify")) rsa_mode = RSA_VERIFY;
 157                 else if(!strcmp(*argv, "-rev")) rev = 1;
 158                 else if(!strcmp(*argv, "-encrypt")) rsa_mode = RSA_ENCRYPT;
 159                 else if(!strcmp(*argv, "-decrypt")) {
 160                         rsa_mode = RSA_DECRYPT;
 161                         need_priv = 1;
 162                 } else badarg = 1;
 163                 if(badarg) {
 164                         usage();
 165                         goto end;
 166                 }
 167                 argc--;
 168                 argv++;
 169         }
 170
 171         if(need_priv && (key_type != KEY_PRIVKEY)) {
 172                 BIO_printf(bio_err, "A private key is needed for this operation\n");
 173                 goto end;
 174         }
 175
 176 #ifndef OPENSSL_NO_ENGINE
 177         e = setup_engine(bio_err, engine, 0);
 178 #endif
 179         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
 180                 BIO_printf(bio_err, "Error getting password\n");
 181                 goto end;
 182         }
 183
 184 /* FIXME: seed PRNG only if needed */
 185         app_RAND_load_file(NULL, bio_err, 0);
 186
 187         switch(key_type) {
 188                 case KEY_PRIVKEY:
 189                 pkey = load_key(bio_err, keyfile, keyform, 0,
 190                         passin, e, "Private Key");
 191                 break;
 192
 193                 case KEY_PUBKEY:
 194                 pkey = load_pubkey(bio_err, keyfile, keyform, 0,
 195                         NULL, e, "Public Key");
 196                 break;
 197
 198                 case KEY_CERT:
 199                 x = load_cert(bio_err, keyfile, keyform,
 200                         NULL, e, "Certificate");
 201                 if(x) {
 202                         pkey = X509_get_pubkey(x);
 203                         X509_free(x);
 204                 }
 205                 break;
 206         }
 207
 208         if(!pkey) {
 209                 return 1;
 210         }
 211
 212         rsa = EVP_PKEY_get1_RSA(pkey);
 213         EVP_PKEY_free(pkey);
 214
 215         if(!rsa) {
 216                 BIO_printf(bio_err, "Error getting RSA key\n");
 217                 ERR_print_errors(bio_err);
 218                 goto end;
 219         }
 220
 221
 222         if(infile) {
 223                 if(!(in = BIO_new_file(infile, "rb"))) {
 224                         BIO_printf(bio_err, "Error Reading Input File\n");
 225                         ERR_print_errors(bio_err);
 226                         goto end;
 227                 }
 228         } else in = BIO_new_fp(stdin, BIO_NOCLOSE);
 229
 230         if(outfile) {
 231                 if(!(out = BIO_new_file(outfile, "wb"))) {
 232                         BIO_printf(bio_err, "Error Reading Output File\n");
 233                         ERR_print_errors(bio_err);
 234                         goto end;
 235                 }
 236         } else {
 237                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 238 #ifdef OPENSSL_SYS_VMS
 239                 {
 240                     BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 241                     out = BIO_push(tmpbio, out);
 242                 }
 243 #endif
 244         }
 245
 246         keysize = RSA_size(rsa);
 247
 248         rsa_in = OPENSSL_malloc(keysize * 2);
 249         rsa_out = OPENSSL_malloc(keysize);
 250
 251         /* Read the input data */
 252         rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 253         if(rsa_inlen <= 0) {
 254                 BIO_printf(bio_err, "Error reading input Data\n");
 255                 exit(1);
 256         }
 257         if(rev) {
 258                 int i;
 259                 unsigned char ctmp;
 260                 for(i = 0; i < rsa_inlen/2; i++) {
 261                         ctmp = rsa_in[i];
 262                         rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 263                         rsa_in[rsa_inlen - 1 - i] = ctmp;
 264                 }
 265         }
 266         switch(rsa_mode) {
 267
 268                 case RSA_VERIFY:
 269                         rsa_outlen  = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 270                 break;
 271
 272                 case RSA_SIGN:
 273                         rsa_outlen  = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 274                 break;
 275
 276                 case RSA_ENCRYPT:
 277                         rsa_outlen  = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 278                 break;
 279
 280                 case RSA_DECRYPT:
 281                         rsa_outlen  = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 282                 break;
 283
 284         }
 285
 286         if(rsa_outlen <= 0) {
 287                 BIO_printf(bio_err, "RSA operation error\n");
 288                 ERR_print_errors(bio_err);
 289                 goto end;
 290         }
 291         ret = 0;
 292         if(asn1parse) {
 293                 if(!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 294                         ERR_print_errors(bio_err);
 295                 }
 296         } else if(hexdump) BIO_dump(out, (char *)rsa_out, rsa_outlen);
 297         else BIO_write(out, rsa_out, rsa_outlen);
 298         end:
 299         RSA_free(rsa);
 300         BIO_free(in);
 301         BIO_free_all(out);
 302         if(rsa_in) OPENSSL_free(rsa_in);
 303         if(rsa_out) OPENSSL_free(rsa_out);
 304         if(passin) OPENSSL_free(passin);
 305         return ret;
 306 }
 307
 308 static void usage()
 309 {
 310         BIO_printf(bio_err, "Usage: rsautl [options]\n");
 311         BIO_printf(bio_err, "-in file        input file\n");
 312         BIO_printf(bio_err, "-out file       output file\n");
 313         BIO_printf(bio_err, "-inkey file     input key\n");
 314         BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
 315         BIO_printf(bio_err, "-pubin          input is an RSA public\n");
 316         BIO_printf(bio_err, "-certin         input is a certificate carrying an RSA public key\n");
 317         BIO_printf(bio_err, "-ssl            use SSL v2 padding\n");
 318         BIO_printf(bio_err, "-raw            use no padding\n");
 319         BIO_printf(bio_err, "-pkcs           use PKCS#1 v1.5 padding (default)\n");
 320         BIO_printf(bio_err, "-oaep           use PKCS#1 OAEP\n");
 321         BIO_printf(bio_err, "-sign           sign with private key\n");
 322         BIO_printf(bio_err, "-verify         verify with public key\n");
 323         BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
 324         BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
 325         BIO_printf(bio_err, "-hexdump        hex dump output\n");
 326 #ifndef OPENSSL_NO_ENGINE
 327         BIO_printf(bio_err, "-engine e       use engine e, possibly a hardware device.\n");
 328         BIO_printf (bio_err, "-passin arg    pass phrase source\n");
 329 #endif
 330
 331 }
 332
 333 #endif