crypto/openssl-0.9.7e/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
  66 #define RSA_SIGN        1
  67 #define RSA_VERIFY      2
  68 #define RSA_ENCRYPT     3
  69 #define RSA_DECRYPT     4
  70
  71 #define KEY_PRIVKEY     1
  72 #define KEY_PUBKEY      2
  73 #define KEY_CERT        3
  74
  75 static void usage(void);
  76
  77 #undef PROG
  78
  79 #define PROG rsautl_main
  80
  81 int MAIN(int argc, char **);
  82
  83 int MAIN(int argc, char **argv)
  84 {
  85         ENGINE *e = NULL;
  86         BIO *in = NULL, *out = NULL;
  87         char *infile = NULL, *outfile = NULL;
  88 #ifndef OPENSSL_NO_ENGINE
  89         char *engine = NULL;
  90 #endif
  91         char *keyfile = NULL;
  92         char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  93         int keyform = FORMAT_PEM;
  94         char need_priv = 0, badarg = 0, rev = 0;
  95         char hexdump = 0, asn1parse = 0;
  96         X509 *x;
  97         EVP_PKEY *pkey = NULL;
  98         RSA *rsa = NULL;
  99         unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
 100         char *passargin = NULL, *passin = NULL;
 101         int rsa_inlen, rsa_outlen = 0;
 102         int keysize;
 103
 104         int ret = 1;
 105
 106         argc--;
 107         argv++;
 108
 109         if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 110
 111         if (!load_config(bio_err, NULL))
 112                 goto end;
 113         ERR_load_crypto_strings();
 114         OpenSSL_add_all_algorithms();
 115         pad = RSA_PKCS1_PADDING;
 116
 117         while(argc >= 1)
 118         {
 119                 if (!strcmp(*argv,"-in")) {
 120                         if (--argc < 1) badarg = 1;
 121                         infile= *(++argv);
 122                 } else if (!strcmp(*argv,"-out")) {
 123                         if (--argc < 1) badarg = 1;
 124                         outfile= *(++argv);
 125                 } else if(!strcmp(*argv, "-inkey")) {
 126                         if (--argc < 1) badarg = 1;
 127                         keyfile = *(++argv);
 128                 } else if (!strcmp(*argv,"-passin")) {
 129                         if (--argc < 1) badarg = 1;
 130                         passargin= *(++argv);
 131                 } else if (strcmp(*argv,"-keyform") == 0) {
 132                         if (--argc < 1) badarg = 1;
 133                         keyform=str2fmt(*(++argv));
 134 #ifndef OPENSSL_NO_ENGINE
 135                 } else if(!strcmp(*argv, "-engine")) {
 136                         if (--argc < 1) badarg = 1;
 137                         engine = *(++argv);
 138 #endif
 139                 } else if(!strcmp(*argv, "-pubin")) {
 140                         key_type = KEY_PUBKEY;
 141                 } else if(!strcmp(*argv, "-certin")) {
 142                         key_type = KEY_CERT;
 143                 }
 144                 else if(!strcmp(*argv, "-asn1parse")) asn1parse = 1;
 145                 else if(!strcmp(*argv, "-hexdump")) hexdump = 1;
 146                 else if(!strcmp(*argv, "-raw")) pad = RSA_NO_PADDING;
 147                 else if(!strcmp(*argv, "-oaep")) pad = RSA_PKCS1_OAEP_PADDING;
 148                 else if(!strcmp(*argv, "-ssl")) pad = RSA_SSLV23_PADDING;
 149                 else if(!strcmp(*argv, "-pkcs")) pad = RSA_PKCS1_PADDING;
 150                 else if(!strcmp(*argv, "-sign")) {
 151                         rsa_mode = RSA_SIGN;
 152                         need_priv = 1;
 153                 } else if(!strcmp(*argv, "-verify")) rsa_mode = RSA_VERIFY;
 154                 else if(!strcmp(*argv, "-rev")) rev = 1;
 155                 else if(!strcmp(*argv, "-encrypt")) rsa_mode = RSA_ENCRYPT;
 156                 else if(!strcmp(*argv, "-decrypt")) {
 157                         rsa_mode = RSA_DECRYPT;
 158                         need_priv = 1;
 159                 } else badarg = 1;
 160                 if(badarg) {
 161                         usage();
 162                         goto end;
 163                 }
 164                 argc--;
 165                 argv++;
 166         }
 167
 168         if(need_priv && (key_type != KEY_PRIVKEY)) {
 169                 BIO_printf(bio_err, "A private key is needed for this operation\n");
 170                 goto end;
 171         }
 172
 173 #ifndef OPENSSL_NO_ENGINE
 174         e = setup_engine(bio_err, engine, 0);
 175 #endif
 176         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
 177                 BIO_printf(bio_err, "Error getting password\n");
 178                 goto end;
 179         }
 180
 181 /* FIXME: seed PRNG only if needed */
 182         app_RAND_load_file(NULL, bio_err, 0);
 183
 184         switch(key_type) {
 185                 case KEY_PRIVKEY:
 186                 pkey = load_key(bio_err, keyfile, keyform, 0,
 187                         passin, e, "Private Key");
 188                 break;
 189
 190                 case KEY_PUBKEY:
 191                 pkey = load_pubkey(bio_err, keyfile, keyform, 0,
 192                         NULL, e, "Public Key");
 193                 break;
 194
 195                 case KEY_CERT:
 196                 x = load_cert(bio_err, keyfile, keyform,
 197                         NULL, e, "Certificate");
 198                 if(x) {
 199                         pkey = X509_get_pubkey(x);
 200                         X509_free(x);
 201                 }
 202                 break;
 203         }
 204
 205         if(!pkey) {
 206                 return 1;
 207         }
 208
 209         rsa = EVP_PKEY_get1_RSA(pkey);
 210         EVP_PKEY_free(pkey);
 211
 212         if(!rsa) {
 213                 BIO_printf(bio_err, "Error getting RSA key\n");
 214                 ERR_print_errors(bio_err);
 215                 goto end;
 216         }
 217
 218
 219         if(infile) {
 220                 if(!(in = BIO_new_file(infile, "rb"))) {
 221                         BIO_printf(bio_err, "Error Reading Input File\n");
 222                         ERR_print_errors(bio_err);
 223                         goto end;
 224                 }
 225         } else 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 #ifdef OPENSSL_SYS_VMS
 236                 {
 237                     BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 238                     out = BIO_push(tmpbio, out);
 239                 }
 240 #endif
 241         }
 242
 243         keysize = RSA_size(rsa);
 244
 245         rsa_in = OPENSSL_malloc(keysize * 2);
 246         rsa_out = OPENSSL_malloc(keysize);
 247
 248         /* Read the input data */
 249         rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 250         if(rsa_inlen <= 0) {
 251                 BIO_printf(bio_err, "Error reading input Data\n");
 252                 exit(1);
 253         }
 254         if(rev) {
 255                 int i;
 256                 unsigned char ctmp;
 257                 for(i = 0; i < rsa_inlen/2; i++) {
 258                         ctmp = rsa_in[i];
 259                         rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 260                         rsa_in[rsa_inlen - 1 - i] = ctmp;
 261                 }
 262         }
 263         switch(rsa_mode) {
 264
 265                 case RSA_VERIFY:
 266                         rsa_outlen  = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 267                 break;
 268
 269                 case RSA_SIGN:
 270                         rsa_outlen  = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 271                 break;
 272
 273                 case RSA_ENCRYPT:
 274                         rsa_outlen  = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 275                 break;
 276
 277                 case RSA_DECRYPT:
 278                         rsa_outlen  = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 279                 break;
 280
 281         }
 282
 283         if(rsa_outlen <= 0) {
 284                 BIO_printf(bio_err, "RSA operation error\n");
 285                 ERR_print_errors(bio_err);
 286                 goto end;
 287         }
 288         ret = 0;
 289         if(asn1parse) {
 290                 if(!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 291                         ERR_print_errors(bio_err);
 292                 }
 293         } else if(hexdump) BIO_dump(out, (char *)rsa_out, rsa_outlen);
 294         else BIO_write(out, rsa_out, rsa_outlen);
 295         end:
 296         RSA_free(rsa);
 297         BIO_free(in);
 298         BIO_free_all(out);
 299         if(rsa_in) OPENSSL_free(rsa_in);
 300         if(rsa_out) OPENSSL_free(rsa_out);
 301         if(passin) OPENSSL_free(passin);
 302         return ret;
 303 }
 304
 305 static void usage()
 306 {
 307         BIO_printf(bio_err, "Usage: rsautl [options]\n");
 308         BIO_printf(bio_err, "-in file        input file\n");
 309         BIO_printf(bio_err, "-out file       output file\n");
 310         BIO_printf(bio_err, "-inkey file     input key\n");
 311         BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
 312         BIO_printf(bio_err, "-pubin          input is an RSA public\n");
 313         BIO_printf(bio_err, "-certin         input is a certificate carrying an RSA public key\n");
 314         BIO_printf(bio_err, "-ssl            use SSL v2 padding\n");
 315         BIO_printf(bio_err, "-raw            use no padding\n");
 316         BIO_printf(bio_err, "-pkcs           use PKCS#1 v1.5 padding (default)\n");
 317         BIO_printf(bio_err, "-oaep           use PKCS#1 OAEP\n");
 318         BIO_printf(bio_err, "-sign           sign with private key\n");
 319         BIO_printf(bio_err, "-verify         verify with public key\n");
 320         BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
 321         BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
 322         BIO_printf(bio_err, "-hexdump        hex dump output\n");
 323 #ifndef OPENSSL_NO_ENGINE
 324         BIO_printf(bio_err, "-engine e       use engine e, possibly a hardware device.\n");
 325         BIO_printf (bio_err, "-passin arg    pass phrase source\n");
 326 #endif
 327
 328 }
 329
 330 #endif