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 #include "apps.h"
  59 #include <openssl/err.h>
  60 #include <openssl/pem.h>
  61
  62 #define RSA_SIGN        1
  63 #define RSA_VERIFY      2
  64 #define RSA_ENCRYPT     3
  65 #define RSA_DECRYPT     4
  66
  67 #define KEY_PRIVKEY     1
  68 #define KEY_PUBKEY      2
  69 #define KEY_CERT        3
  70
  71 static void usage(void);
  72
  73 #undef PROG
  74
  75 #define PROG rsautl_main
  76
  77 int MAIN(int argc, char **);
  78
  79 int MAIN(int argc, char **argv)
  80 {
  81         BIO *in = NULL, *out = NULL;
  82         char *infile = NULL, *outfile = NULL;
  83         char *keyfile = NULL;
  84         char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  85         int keyform = FORMAT_PEM;
  86         char need_priv = 0, badarg = 0, rev = 0;
  87         char hexdump = 0, asn1parse = 0;
  88         X509 *x;
  89         EVP_PKEY *pkey = NULL;
  90         RSA *rsa = NULL;
  91         unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
  92         int rsa_inlen, rsa_outlen = 0;
  93         int keysize;
  94
  95         int ret = 1;
  96
  97         argc--;
  98         argv++;
  99
 100         if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 101         ERR_load_crypto_strings();
 102         OpenSSL_add_all_algorithms();
 103         pad = RSA_PKCS1_PADDING;
 104
 105         while(argc >= 1)
 106         {
 107                 if (!strcmp(*argv,"-in")) {
 108                         if (--argc < 1) badarg = 1;
 109                         infile= *(++argv);
 110                 } else if (!strcmp(*argv,"-out")) {
 111                         if (--argc < 1) badarg = 1;
 112                         outfile= *(++argv);
 113                 } else if(!strcmp(*argv, "-inkey")) {
 114                         if (--argc < 1) badarg = 1;
 115                         keyfile = *(++argv);
 116                 } else if(!strcmp(*argv, "-pubin")) {
 117                         key_type = KEY_PUBKEY;
 118                 } else if(!strcmp(*argv, "-certin")) {
 119                         key_type = KEY_CERT;
 120                 }
 121                 else if(!strcmp(*argv, "-asn1parse")) asn1parse = 1;
 122                 else if(!strcmp(*argv, "-hexdump")) hexdump = 1;
 123                 else if(!strcmp(*argv, "-raw")) pad = RSA_NO_PADDING;
 124                 else if(!strcmp(*argv, "-ssl")) pad = RSA_SSLV23_PADDING;
 125                 else if(!strcmp(*argv, "-pkcs")) pad = RSA_PKCS1_PADDING;
 126                 else if(!strcmp(*argv, "-sign")) {
 127                         rsa_mode = RSA_SIGN;
 128                         need_priv = 1;
 129                 } else if(!strcmp(*argv, "-verify")) rsa_mode = RSA_VERIFY;
 130                 else if(!strcmp(*argv, "-rev")) rev = 1;
 131                 else if(!strcmp(*argv, "-encrypt")) rsa_mode = RSA_ENCRYPT;
 132                 else if(!strcmp(*argv, "-decrypt")) {
 133                         rsa_mode = RSA_DECRYPT;
 134                         need_priv = 1;
 135                 } else badarg = 1;
 136                 if(badarg) {
 137                         usage();
 138                         goto end;
 139                 }
 140                 argc--;
 141                 argv++;
 142         }
 143
 144         if(need_priv && (key_type != KEY_PRIVKEY)) {
 145                 BIO_printf(bio_err, "A private key is needed for this operation\n");
 146                 goto end;
 147         }
 148
 149         switch(key_type) {
 150                 case KEY_PRIVKEY:
 151                 pkey = load_key(bio_err, keyfile, keyform, NULL);
 152                 break;
 153
 154                 case KEY_PUBKEY:
 155                 pkey = load_pubkey(bio_err, keyfile, keyform);
 156                 break;
 157
 158                 case KEY_CERT:
 159                 x = load_cert(bio_err, keyfile, keyform);
 160                 if(x) {
 161                         pkey = X509_get_pubkey(x);
 162                         X509_free(x);
 163                 }
 164                 break;
 165         }
 166
 167         if(!pkey) {
 168                 BIO_printf(bio_err, "Error loading key\n");
 169                 return 1;
 170         }
 171
 172         rsa = EVP_PKEY_get1_RSA(pkey);
 173         EVP_PKEY_free(pkey);
 174
 175         if(!rsa) {
 176                 BIO_printf(bio_err, "Error getting RSA key\n");
 177                 ERR_print_errors(bio_err);
 178                 goto end;
 179         }
 180
 181
 182         if(infile) {
 183                 if(!(in = BIO_new_file(infile, "rb"))) {
 184                         BIO_printf(bio_err, "Error Reading Input File\n");
 185                         ERR_print_errors(bio_err);
 186                         goto end;
 187                 }
 188         } else in = BIO_new_fp(stdin, BIO_NOCLOSE);
 189
 190         if(outfile) {
 191                 if(!(out = BIO_new_file(outfile, "wb"))) {
 192                         BIO_printf(bio_err, "Error Reading Output File\n");
 193                         ERR_print_errors(bio_err);
 194                         goto end;
 195                 }
 196         } else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 197
 198         keysize = RSA_size(rsa);
 199
 200         rsa_in = OPENSSL_malloc(keysize * 2);
 201         rsa_out = OPENSSL_malloc(keysize);
 202
 203         /* Read the input data */
 204         rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 205         if(rsa_inlen <= 0) {
 206                 BIO_printf(bio_err, "Error reading input Data\n");
 207                 exit(1);
 208         }
 209         if(rev) {
 210                 int i;
 211                 unsigned char ctmp;
 212                 for(i = 0; i < rsa_inlen/2; i++) {
 213                         ctmp = rsa_in[i];
 214                         rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 215                         rsa_in[rsa_inlen - 1 - i] = ctmp;
 216                 }
 217         }
 218         switch(rsa_mode) {
 219
 220                 case RSA_VERIFY:
 221                         rsa_outlen  = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 222                 break;
 223
 224                 case RSA_SIGN:
 225                         rsa_outlen  = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 226                 break;
 227
 228                 case RSA_ENCRYPT:
 229                         rsa_outlen  = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 230                 break;
 231
 232                 case RSA_DECRYPT:
 233                         rsa_outlen  = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 234                 break;
 235
 236         }
 237
 238         if(rsa_outlen <= 0) {
 239                 BIO_printf(bio_err, "RSA operation error\n");
 240                 ERR_print_errors(bio_err);
 241                 goto end;
 242         }
 243         ret = 0;
 244         if(asn1parse) {
 245                 if(!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 246                         ERR_print_errors(bio_err);
 247                 }
 248         } else if(hexdump) BIO_dump(out, (char *)rsa_out, rsa_outlen);
 249         else BIO_write(out, rsa_out, rsa_outlen);
 250         end:
 251         RSA_free(rsa);
 252         BIO_free(in);
 253         BIO_free(out);
 254         if(rsa_in) OPENSSL_free(rsa_in);
 255         if(rsa_out) OPENSSL_free(rsa_out);
 256         return ret;
 257 }
 258
 259 static void usage()
 260 {
 261         BIO_printf(bio_err, "Usage: rsautl [options]\n");
 262         BIO_printf(bio_err, "-in file        input file\n");
 263         BIO_printf(bio_err, "-out file       output file\n");
 264         BIO_printf(bio_err, "-inkey file     input key\n");
 265         BIO_printf(bio_err, "-pubin          input is an RSA public\n");
 266         BIO_printf(bio_err, "-certin         input is a certificate carrying an RSA public key\n");
 267         BIO_printf(bio_err, "-ssl            use SSL v2 padding\n");
 268         BIO_printf(bio_err, "-raw            use no padding\n");
 269         BIO_printf(bio_err, "-pkcs           use PKCS#1 padding (default)\n");
 270         BIO_printf(bio_err, "-sign           sign with private key\n");
 271         BIO_printf(bio_err, "-verify         verify with public key\n");
 272         BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
 273         BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
 274         BIO_printf(bio_err, "-hexdump        hex dump output\n");
 275 }
 276