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 #ifndef OPENSSL_NO_RSA
  60
  61 #include "apps.h"
  62 #include <string.h>
  63 #include <openssl/err.h>
  64 #include <openssl/pem.h>
  65 #include <openssl/engine.h>
  66
  67 #define RSA_SIGN        1
  68 #define RSA_VERIFY      2
  69 #define RSA_ENCRYPT     3
  70 #define RSA_DECRYPT     4
  71
  72 #define KEY_PRIVKEY     1
  73 #define KEY_PUBKEY      2
  74 #define KEY_CERT        3
  75
  76 static void usage(void);
  77
  78 #undef PROG
  79
  80 #define PROG rsautl_main
  81
  82 int MAIN(int argc, char **);
  83
  84 int MAIN(int argc, char **argv)
  85 {
  86         ENGINE *e = NULL;
  87         BIO *in = NULL, *out = NULL;
  88         char *infile = NULL, *outfile = NULL;
  89         char *engine = NULL;
  90         char *keyfile = NULL;
  91         char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  92         int keyform = FORMAT_PEM;
  93         char need_priv = 0, badarg = 0, rev = 0;
  94         char hexdump = 0, asn1parse = 0;
  95         X509 *x;
  96         EVP_PKEY *pkey = NULL;
  97         RSA *rsa = NULL;
  98         unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
  99         int rsa_inlen, rsa_outlen = 0;
 100         int keysize;
 101
 102         int ret = 1;
 103
 104         argc--;
 105         argv++;
 106
 107         if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 108         ERR_load_crypto_strings();
 109         OpenSSL_add_all_algorithms();
 110         pad = RSA_PKCS1_PADDING;
 111
 112         while(argc >= 1)
 113         {
 114                 if (!strcmp(*argv,"-in")) {
 115                         if (--argc < 1) badarg = 1;
 116                         infile= *(++argv);
 117                 } else if (!strcmp(*argv,"-out")) {
 118                         if (--argc < 1) badarg = 1;
 119                         outfile= *(++argv);
 120                 } else if(!strcmp(*argv, "-inkey")) {
 121                         if (--argc < 1) badarg = 1;
 122                         keyfile = *(++argv);
 123                 } else if(!strcmp(*argv, "-engine")) {
 124                         if (--argc < 1) badarg = 1;
 125                         engine = *(++argv);
 126                 } else if(!strcmp(*argv, "-pubin")) {
 127                         key_type = KEY_PUBKEY;
 128                 } else if(!strcmp(*argv, "-certin")) {
 129                         key_type = KEY_CERT;
 130                 }
 131                 else if(!strcmp(*argv, "-asn1parse")) asn1parse = 1;
 132                 else if(!strcmp(*argv, "-hexdump")) hexdump = 1;
 133                 else if(!strcmp(*argv, "-raw")) pad = RSA_NO_PADDING;
 134                 else if(!strcmp(*argv, "-oaep")) pad = RSA_PKCS1_OAEP_PADDING;
 135                 else if(!strcmp(*argv, "-ssl")) pad = RSA_SSLV23_PADDING;
 136                 else if(!strcmp(*argv, "-pkcs")) pad = RSA_PKCS1_PADDING;
 137                 else if(!strcmp(*argv, "-sign")) {
 138                         rsa_mode = RSA_SIGN;
 139                         need_priv = 1;
 140                 } else if(!strcmp(*argv, "-verify")) rsa_mode = RSA_VERIFY;
 141                 else if(!strcmp(*argv, "-rev")) rev = 1;
 142                 else if(!strcmp(*argv, "-encrypt")) rsa_mode = RSA_ENCRYPT;
 143                 else if(!strcmp(*argv, "-decrypt")) {
 144                         rsa_mode = RSA_DECRYPT;
 145                         need_priv = 1;
 146                 } else badarg = 1;
 147                 if(badarg) {
 148                         usage();
 149                         goto end;
 150                 }
 151                 argc--;
 152                 argv++;
 153         }
 154
 155         if(need_priv && (key_type != KEY_PRIVKEY)) {
 156                 BIO_printf(bio_err, "A private key is needed for this operation\n");
 157                 goto end;
 158         }
 159
 160         if (engine != NULL)
 161                 {
 162                 if((e = ENGINE_by_id(engine)) == NULL)
 163                         {
 164                         BIO_printf(bio_err,"invalid engine \"%s\"\n",
 165                                 engine);
 166                         goto end;
 167                         }
 168                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
 169                         {
 170                         BIO_printf(bio_err,"can't use that engine\n");
 171                         goto end;
 172                         }
 173                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
 174                 /* Free our "structural" reference. */
 175                 ENGINE_free(e);
 176                 }
 177
 178 /* FIXME: seed PRNG only if needed */
 179         app_RAND_load_file(NULL, bio_err, 0);
 180
 181         switch(key_type) {
 182                 case KEY_PRIVKEY:
 183                 pkey = load_key(bio_err, keyfile, keyform, NULL, e);
 184                 break;
 185
 186                 case KEY_PUBKEY:
 187                 pkey = load_pubkey(bio_err, keyfile, keyform, e);
 188                 break;
 189
 190                 case KEY_CERT:
 191                 x = load_cert(bio_err, keyfile, keyform);
 192                 if(x) {
 193                         pkey = X509_get_pubkey(x);
 194                         X509_free(x);
 195                 }
 196                 break;
 197         }
 198
 199         if(!pkey) {
 200                 BIO_printf(bio_err, "Error loading key\n");
 201                 return 1;
 202         }
 203
 204         rsa = EVP_PKEY_get1_RSA(pkey);
 205         EVP_PKEY_free(pkey);
 206
 207         if(!rsa) {
 208                 BIO_printf(bio_err, "Error getting RSA key\n");
 209                 ERR_print_errors(bio_err);
 210                 goto end;
 211         }
 212
 213
 214         if(infile) {
 215                 if(!(in = BIO_new_file(infile, "rb"))) {
 216                         BIO_printf(bio_err, "Error Reading Input File\n");
 217                         ERR_print_errors(bio_err);
 218                         goto end;
 219                 }
 220         } else in = BIO_new_fp(stdin, BIO_NOCLOSE);
 221
 222         if(outfile) {
 223                 if(!(out = BIO_new_file(outfile, "wb"))) {
 224                         BIO_printf(bio_err, "Error Reading Output File\n");
 225                         ERR_print_errors(bio_err);
 226                         goto end;
 227                 }
 228         } else {
 229                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 230 #ifdef VMS
 231                 {
 232                     BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 233                     out = BIO_push(tmpbio, out);
 234                 }
 235 #endif
 236         }
 237
 238         keysize = RSA_size(rsa);
 239
 240         rsa_in = OPENSSL_malloc(keysize * 2);
 241         rsa_out = OPENSSL_malloc(keysize);
 242
 243         /* Read the input data */
 244         rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 245         if(rsa_inlen <= 0) {
 246                 BIO_printf(bio_err, "Error reading input Data\n");
 247                 exit(1);
 248         }
 249         if(rev) {
 250                 int i;
 251                 unsigned char ctmp;
 252                 for(i = 0; i < rsa_inlen/2; i++) {
 253                         ctmp = rsa_in[i];
 254                         rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 255                         rsa_in[rsa_inlen - 1 - i] = ctmp;
 256                 }
 257         }
 258         switch(rsa_mode) {
 259
 260                 case RSA_VERIFY:
 261                         rsa_outlen  = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 262                 break;
 263
 264                 case RSA_SIGN:
 265                         rsa_outlen  = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 266                 break;
 267
 268                 case RSA_ENCRYPT:
 269                         rsa_outlen  = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 270                 break;
 271
 272                 case RSA_DECRYPT:
 273                         rsa_outlen  = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 274                 break;
 275
 276         }
 277
 278         if(rsa_outlen <= 0) {
 279                 BIO_printf(bio_err, "RSA operation error\n");
 280                 ERR_print_errors(bio_err);
 281                 goto end;
 282         }
 283         ret = 0;
 284         if(asn1parse) {
 285                 if(!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 286                         ERR_print_errors(bio_err);
 287                 }
 288         } else if(hexdump) BIO_dump(out, (char *)rsa_out, rsa_outlen);
 289         else BIO_write(out, rsa_out, rsa_outlen);
 290         end:
 291         RSA_free(rsa);
 292         BIO_free(in);
 293         BIO_free_all(out);
 294         if(rsa_in) OPENSSL_free(rsa_in);
 295         if(rsa_out) OPENSSL_free(rsa_out);
 296         return ret;
 297 }
 298
 299 static void usage()
 300 {
 301         BIO_printf(bio_err, "Usage: rsautl [options]\n");
 302         BIO_printf(bio_err, "-in file        input file\n");
 303         BIO_printf(bio_err, "-out file       output file\n");
 304         BIO_printf(bio_err, "-inkey file     input key\n");
 305         BIO_printf(bio_err, "-pubin          input is an RSA public\n");
 306         BIO_printf(bio_err, "-certin         input is a certificate carrying an RSA public key\n");
 307         BIO_printf(bio_err, "-ssl            use SSL v2 padding\n");
 308         BIO_printf(bio_err, "-raw            use no padding\n");
 309         BIO_printf(bio_err, "-pkcs           use PKCS#1 v1.5 padding (default)\n");
 310         BIO_printf(bio_err, "-oaep           use PKCS#1 OAEP\n");
 311         BIO_printf(bio_err, "-sign           sign with private key\n");
 312         BIO_printf(bio_err, "-verify         verify with public key\n");
 313         BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
 314         BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
 315         BIO_printf(bio_err, "-hexdump        hex dump output\n");
 316 }
 317
 318 #endif