apps/pkeyutl.c

   1 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   2  * project 2006.
   3  */
   4 /* ====================================================================
   5  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  *
  19  * 3. All advertising materials mentioning features or use of this
  20  *    software must display the following acknowledgment:
  21  *    "This product includes software developed by the OpenSSL Project
  22  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  23  *
  24  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  25  *    endorse or promote products derived from this software without
  26  *    prior written permission. For written permission, please contact
  27  *    licensing@OpenSSL.org.
  28  *
  29  * 5. Products derived from this software may not be called "OpenSSL"
  30  *    nor may "OpenSSL" appear in their names without prior written
  31  *    permission of the OpenSSL Project.
  32  *
  33  * 6. Redistributions of any form whatsoever must retain the following
  34  *    acknowledgment:
  35  *    "This product includes software developed by the OpenSSL Project
  36  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  39  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  40  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  41  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  42  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  43  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  44  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  45  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  46  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  47  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  48  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  49  * OF THE POSSIBILITY OF SUCH DAMAGE.
  50  * ====================================================================
  51  *
  52  * This product includes cryptographic software written by Eric Young
  53  * (eay@cryptsoft.com).  This product includes software written by Tim
  54  * Hudson (tjh@cryptsoft.com).
  55  *
  56  */
  57
  58
  59 #include "apps.h"
  60 #include <string.h>
  61 #include <openssl/err.h>
  62 #include <openssl/pem.h>
  63 #include <openssl/evp.h>
  64
  65 #define KEY_PRIVKEY     1
  66 #define KEY_PUBKEY      2
  67 #define KEY_CERT        3
  68
  69 static void usage(void);
  70
  71 #undef PROG
  72
  73 #define PROG pkeyutl_main
  74
  75 static EVP_PKEY_CTX *init_ctx(int *pkeysize,
  76                                 char *keyfile, int keyform, int key_type,
  77                                 char *passargin, int pkey_op, char *engine);
  78
  79 int MAIN(int argc, char **);
  80
  81 int MAIN(int argc, char **argv)
  82 {
  83         BIO *in = NULL, *out = NULL;
  84         char *infile = NULL, *outfile = NULL, *sigfile = NULL;
  85         char *engine = NULL;
  86         int pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
  87         int keyform = FORMAT_PEM;
  88         char badarg = 0, rev = 0;
  89         char hexdump = 0, asn1parse = 0;
  90         EVP_PKEY_CTX *ctx = NULL;
  91         char *passargin = NULL;
  92         int keysize = -1;
  93
  94         unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
  95         int buf_inlen, buf_outlen, siglen = -1;
  96
  97         int ret = 1, rv = -1;
  98
  99         argc--;
 100         argv++;
 101
 102         if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 103
 104         if (!load_config(bio_err, NULL))
 105                 goto end;
 106         ERR_load_crypto_strings();
 107         OpenSSL_add_all_algorithms();
 108
 109         while(argc >= 1)
 110                 {
 111                 if (!strcmp(*argv,"-in"))
 112                         {
 113                         if (--argc < 1) badarg = 1;
 114                         infile= *(++argv);
 115                         }
 116                 else if (!strcmp(*argv,"-out"))
 117                         {
 118                         if (--argc < 1) badarg = 1;
 119                         outfile= *(++argv);
 120                         }
 121                 else if (!strcmp(*argv,"-sigfile"))
 122                         {
 123                         if (--argc < 1) badarg = 1;
 124                         sigfile= *(++argv);
 125                         }
 126                 else if(!strcmp(*argv, "-inkey"))
 127                         {
 128                         if (--argc < 1)
 129                                 badarg = 1;
 130                         else
 131                                 {
 132                                 ctx = init_ctx(&keysize,
 133                                                 *(++argv), keyform, key_type,
 134                                                 passargin, pkey_op, engine);
 135                                 if (!ctx)
 136                                         {
 137                                         BIO_puts(bio_err,
 138                                                 "Error initializing context\n");
 139                                         ERR_print_errors(bio_err);
 140                                         badarg = 1;
 141                                         }
 142                                 }
 143                         }
 144                 else if (!strcmp(*argv,"-passin"))
 145                         {
 146                         if (--argc < 1) badarg = 1;
 147                         passargin= *(++argv);
 148                         }
 149                 else if (strcmp(*argv,"-keyform") == 0)
 150                         {
 151                         if (--argc < 1) badarg = 1;
 152                         keyform=str2fmt(*(++argv));
 153                         }
 154 #ifndef OPENSSL_NO_ENGINE
 155                 else if(!strcmp(*argv, "-engine"))
 156                         {
 157                         if (--argc < 1) badarg = 1;
 158                         engine = *(++argv);
 159                         }
 160 #endif
 161                 else if(!strcmp(*argv, "-pubin"))
 162                         key_type = KEY_PUBKEY;
 163                 else if(!strcmp(*argv, "-certin"))
 164                         key_type = KEY_CERT;
 165                 else if(!strcmp(*argv, "-asn1parse"))
 166                         asn1parse = 1;
 167                 else if(!strcmp(*argv, "-hexdump"))
 168                         hexdump = 1;
 169                 else if(!strcmp(*argv, "-sign"))
 170                         pkey_op = EVP_PKEY_OP_SIGN;
 171                 else if(!strcmp(*argv, "-verify"))
 172                         pkey_op = EVP_PKEY_OP_VERIFY;
 173                 else if(!strcmp(*argv, "-verifyrecover"))
 174                         pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 175                 else if(!strcmp(*argv, "-rev"))
 176                         rev = 1;
 177                 else if(!strcmp(*argv, "-encrypt"))
 178                         pkey_op = EVP_PKEY_OP_ENCRYPT;
 179                 else if(!strcmp(*argv, "-decrypt"))
 180                         pkey_op = EVP_PKEY_OP_DECRYPT;
 181                 else badarg = 1;
 182                 if(badarg)
 183                         {
 184                         usage();
 185                         goto end;
 186                         }
 187                 argc--;
 188                 argv++;
 189                 }
 190
 191         if (!ctx)
 192                 {
 193                 usage();
 194                 goto end;
 195                 }
 196
 197         if (sigfile && (pkey_op != EVP_PKEY_OP_VERIFY))
 198                 {
 199                 BIO_puts(bio_err, "Signature file specified for non verify\n");
 200                 goto end;
 201                 }
 202
 203         if (!sigfile && (pkey_op == EVP_PKEY_OP_VERIFY))
 204                 {
 205                 BIO_puts(bio_err, "No signature file specified for verify\n");
 206                 goto end;
 207                 }
 208
 209 /* FIXME: seed PRNG only if needed */
 210         app_RAND_load_file(NULL, bio_err, 0);
 211
 212         if(infile)
 213                 {
 214                 if(!(in = BIO_new_file(infile, "rb")))
 215                         {
 216                         BIO_printf(bio_err, "Error Reading Input File\n");
 217                         ERR_print_errors(bio_err);
 218                         goto end;
 219                         }
 220                 }
 221         else
 222                 in = BIO_new_fp(stdin, BIO_NOCLOSE);
 223
 224         if(outfile)
 225                 {
 226                 if(!(out = BIO_new_file(outfile, "wb")))
 227                         {
 228                         BIO_printf(bio_err, "Error Creating Output File\n");
 229                         ERR_print_errors(bio_err);
 230                         goto end;
 231                         }
 232                 }
 233         else
 234                 {
 235                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 236 #ifdef OPENSSL_SYS_VMS
 237                 {
 238                     BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 239                     out = BIO_push(tmpbio, out);
 240                 }
 241 #endif
 242         }
 243
 244         if (sigfile)
 245                 {
 246                 BIO *sigbio = BIO_new_file(sigfile, "rb");
 247                 if (!sigbio)
 248                         {
 249                         BIO_printf(bio_err, "Can't open signature file %s\n",
 250                                                                 sigfile);
 251                         goto end;
 252                         }
 253                 siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 254                 BIO_free(sigbio);
 255                 if (siglen <= 0)
 256                         {
 257                         BIO_printf(bio_err, "Error reading signature data\n");
 258                         goto end;
 259                         }
 260                 }
 261
 262         buf_out = OPENSSL_malloc(keysize);
 263
 264         /* Read the input data */
 265         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 266         if(buf_inlen <= 0)
 267                 {
 268                 BIO_printf(bio_err, "Error reading input Data\n");
 269                 exit(1);
 270                 }
 271         if(rev)
 272                 {
 273                 int i;
 274                 unsigned char ctmp;
 275                 for(i = 0; i < buf_inlen/2; i++)
 276                         {
 277                         ctmp = buf_in[i];
 278                         buf_in[i] = buf_in[buf_inlen - 1 - i];
 279                         buf_in[buf_inlen - 1 - i] = ctmp;
 280                         }
 281                 }
 282         switch(pkey_op)
 283                 {
 284                 case EVP_PKEY_OP_VERIFYRECOVER:
 285                 rv  = EVP_PKEY_verify_recover(ctx, buf_out, &buf_outlen,
 286                                                         buf_in, buf_inlen);
 287                 break;
 288
 289                 case EVP_PKEY_OP_SIGN:
 290                 rv  = EVP_PKEY_sign(ctx, buf_out, &buf_outlen,
 291                                                         buf_in, buf_inlen);
 292                 break;
 293
 294                 case EVP_PKEY_OP_ENCRYPT:
 295                 rv  = EVP_PKEY_encrypt(ctx, buf_out, &buf_outlen,
 296                                                         buf_in, buf_inlen);
 297                 break;
 298
 299                 case EVP_PKEY_OP_DECRYPT:
 300                 rv  = EVP_PKEY_decrypt(ctx, buf_out, &buf_outlen,
 301                                                         buf_in, buf_inlen);
 302                 break;
 303
 304                 case EVP_PKEY_OP_VERIFY:
 305                 rv  = EVP_PKEY_verify(ctx, sig, siglen, buf_in, buf_inlen);
 306                 if (rv == 0)
 307                         BIO_puts(out, "Signature Verification Failure\n");
 308                 else if (rv == 1)
 309                         BIO_puts(out, "Signature Verified Successfully\n");
 310                 if (rv >= 0)
 311                         goto end;
 312                 break;
 313
 314                 }
 315
 316         if(rv <= 0)
 317                 {
 318                 BIO_printf(bio_err, "Public Key operation error\n");
 319                 ERR_print_errors(bio_err);
 320                 goto end;
 321                 }
 322         ret = 0;
 323         if(asn1parse)
 324                 {
 325                 if(!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 326                         ERR_print_errors(bio_err);
 327                 }
 328         else if(hexdump)
 329                 BIO_dump(out, (char *)buf_out, buf_outlen);
 330         else
 331                 BIO_write(out, buf_out, buf_outlen);
 332
 333         end:
 334         if (ctx)
 335                 EVP_PKEY_CTX_free(ctx);
 336         BIO_free(in);
 337         BIO_free_all(out);
 338         if (buf_in)
 339                 OPENSSL_free(buf_in);
 340         if (buf_out)
 341                 OPENSSL_free(buf_out);
 342         if (sig)
 343                 OPENSSL_free(sig);
 344         return ret;
 345 }
 346
 347 static void usage()
 348 {
 349         BIO_printf(bio_err, "Usage: pkeyutl [options]\n");
 350         BIO_printf(bio_err, "-in file        input file\n");
 351         BIO_printf(bio_err, "-out file       output file\n");
 352         BIO_printf(bio_err, "-inkey file     input key\n");
 353         BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
 354         BIO_printf(bio_err, "-pubin          input is an RSA public\n");
 355         BIO_printf(bio_err, "-certin         input is a certificate carrying an RSA public key\n");
 356         BIO_printf(bio_err, "-ctrl X:Y       control parameters\n");
 357         BIO_printf(bio_err, "-sign           sign with private key\n");
 358         BIO_printf(bio_err, "-verify         verify with public key\n");
 359         BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
 360         BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
 361         BIO_printf(bio_err, "-hexdump        hex dump output\n");
 362 #ifndef OPENSSL_NO_ENGINE
 363         BIO_printf(bio_err, "-engine e       use engine e, possibly a hardware device.\n");
 364         BIO_printf(bio_err, "-passin arg     pass phrase source\n");
 365 #endif
 366
 367 }
 368
 369 static EVP_PKEY_CTX *init_ctx(int *pkeysize,
 370                                 char *keyfile, int keyform, int key_type,
 371                                 char *passargin, int pkey_op, char *engine)
 372         {
 373         ENGINE *e = NULL;
 374         EVP_PKEY *pkey = NULL;
 375         EVP_PKEY_CTX *ctx = NULL;
 376         char *passin = NULL;
 377         int rv = -1;
 378         X509 *x;
 379         if(((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT))
 380                 && (key_type != KEY_PRIVKEY))
 381                 {
 382                 BIO_printf(bio_err, "A private key is needed for this operation\n");
 383                 goto end;
 384                 }
 385         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
 386                 {
 387                 BIO_printf(bio_err, "Error getting password\n");
 388                 goto end;
 389                 }
 390         switch(key_type)
 391                 {
 392                 case KEY_PRIVKEY:
 393                 pkey = load_key(bio_err, keyfile, keyform, 0,
 394                         passin, e, "Private Key");
 395                 break;
 396
 397                 case KEY_PUBKEY:
 398                 pkey = load_pubkey(bio_err, keyfile, keyform, 0,
 399                         NULL, e, "Public Key");
 400                 break;
 401
 402                 case KEY_CERT:
 403                 x = load_cert(bio_err, keyfile, keyform,
 404                         NULL, e, "Certificate");
 405                 if(x)
 406                         {
 407                         pkey = X509_get_pubkey(x);
 408                         X509_free(x);
 409                         }
 410                 break;
 411
 412                 }
 413
 414         *pkeysize = EVP_PKEY_size(pkey);
 415
 416         if (!pkey)
 417                 goto end;
 418
 419         ctx = EVP_PKEY_CTX_new(pkey);
 420
 421         EVP_PKEY_free(pkey);
 422
 423         if (!ctx)
 424                 goto end;
 425
 426         switch(pkey_op)
 427                 {
 428                 case EVP_PKEY_OP_SIGN:
 429                 rv = EVP_PKEY_sign_init(ctx);
 430                 break;
 431
 432                 case EVP_PKEY_OP_VERIFY:
 433                 rv = EVP_PKEY_verify_init(ctx);
 434                 break;
 435
 436                 case EVP_PKEY_OP_VERIFYRECOVER:
 437                 rv = EVP_PKEY_verify_recover_init(ctx);
 438                 break;
 439
 440                 case EVP_PKEY_OP_ENCRYPT:
 441                 rv = EVP_PKEY_encrypt_init(ctx);
 442                 break;
 443
 444                 case EVP_PKEY_OP_DECRYPT:
 445                 rv = EVP_PKEY_decrypt_init(ctx);
 446                 break;
 447                 }
 448
 449         if (rv <= 0)
 450                 {
 451                 EVP_PKEY_CTX_free(ctx);
 452                 ctx = NULL;
 453                 }
 454
 455         end:
 456
 457         if (passin)
 458                 OPENSSL_free(passin);
 459
 460         return ctx;
 461
 462
 463         }
 464