bin/openssl/pkcs8.c

   1 /* $OpenBSD: pkcs8.c,v 1.13 2018/08/24 22:56:45 jmc Exp $ */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project 1999-2004.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 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 <stdio.h>
  60 #include <string.h>
  61
  62 #include "apps.h"
  63 #include "progs.h"
  64
  65 #include <openssl/err.h>
  66 #include <openssl/evp.h>
  67 #include <openssl/pem.h>
  68 #include <openssl/pkcs12.h>
  69
  70 static struct {
  71         const EVP_CIPHER *cipher;
  72         char *infile;
  73         int informat;
  74         int iter;
  75         int nocrypt;
  76         char *outfile;
  77         int outformat;
  78         char *passargin;
  79         char *passargout;
  80         int pbe_nid;
  81         int topk8;
  82 } pkcs8_config;
  83
  84 static int
  85 pkcs8_opt_v1(char *arg)
  86 {
  87         if ((pkcs8_config.pbe_nid = OBJ_txt2nid(arg)) == NID_undef) {
  88                 fprintf(stderr, "Unknown PBE algorithm '%s'\n", arg);
  89                 return (1);
  90         }
  91
  92         return (0);
  93 }
  94
  95 static int
  96 pkcs8_opt_v2(char *arg)
  97 {
  98         if ((pkcs8_config.cipher = EVP_get_cipherbyname(arg)) == NULL) {
  99                 fprintf(stderr, "Unknown cipher '%s'\n", arg);
 100                 return (1);
 101         }
 102
 103         return (0);
 104 }
 105
 106 static struct option pkcs8_options[] = {
 107         {
 108                 .name = "in",
 109                 .argname = "file",
 110                 .desc = "Input file (default stdin)",
 111                 .type = OPTION_ARG,
 112                 .opt.arg = &pkcs8_config.infile,
 113         },
 114         {
 115                 .name = "inform",
 116                 .argname = "der | pem",
 117                 .desc = "Input format (default PEM)",
 118                 .type = OPTION_ARG_FORMAT,
 119                 .opt.value = &pkcs8_config.informat,
 120         },
 121         {
 122                 .name = "nocrypt",
 123                 .desc = "Use or expect unencrypted private key",
 124                 .type = OPTION_FLAG,
 125                 .opt.flag = &pkcs8_config.nocrypt,
 126         },
 127         {
 128                 .name = "noiter",
 129                 .desc = "Use 1 as iteration count",
 130                 .type = OPTION_VALUE,
 131                 .value = 1,
 132                 .opt.value = &pkcs8_config.iter,
 133         },
 134         {
 135                 .name = "out",
 136                 .argname = "file",
 137                 .desc = "Output file (default stdout)",
 138                 .type = OPTION_ARG,
 139                 .opt.arg = &pkcs8_config.outfile,
 140         },
 141         {
 142                 .name = "outform",
 143                 .argname = "der | pem",
 144                 .desc = "Output format (default PEM)",
 145                 .type = OPTION_ARG_FORMAT,
 146                 .opt.value = &pkcs8_config.outformat,
 147         },
 148         {
 149                 .name = "passin",
 150                 .argname = "source",
 151                 .desc = "Input file passphrase source",
 152                 .type = OPTION_ARG,
 153                 .opt.arg = &pkcs8_config.passargin,
 154         },
 155         {
 156                 .name = "passout",
 157                 .argname = "source",
 158                 .desc = "Output file passphrase source",
 159                 .type = OPTION_ARG,
 160                 .opt.arg = &pkcs8_config.passargout,
 161         },
 162         {
 163                 .name = "topk8",
 164                 .desc = "Read traditional format key and write PKCS#8 format"
 165                     " key",
 166                 .type = OPTION_FLAG,
 167                 .opt.flag = &pkcs8_config.topk8,
 168         },
 169         {
 170                 .name = "v1",
 171                 .argname = "algorithm",
 172                 .desc = "Use PKCS#5 v1.5 or PKCS#12 with given algorithm",
 173                 .type = OPTION_ARG_FUNC,
 174                 .opt.argfunc = pkcs8_opt_v1,
 175         },
 176         {
 177                 .name = "v2",
 178                 .argname = "cipher",
 179                 .desc = "Use PKCS#5 v2.0 with given cipher",
 180                 .type = OPTION_ARG_FUNC,
 181                 .opt.argfunc = pkcs8_opt_v2,
 182         },
 183         { NULL },
 184 };
 185
 186 static void
 187 pkcs8_usage()
 188 {
 189         fprintf(stderr, "usage: pkcs8 [-in file] [inform der | pem] "
 190             "[-nocrypt] [-noiter]\n"
 191             "    [-out file] [-outform der | pem] [-passin arg]\n"
 192             "    [-passout arg] [-topk8] [-v1 alg] [-v2 alg]\n\n");
 193         options_usage(pkcs8_options);
 194 }
 195
 196 int
 197 pkcs8_main(int argc, char **argv)
 198 {
 199         BIO *in = NULL, *out = NULL;
 200         X509_SIG *p8 = NULL;
 201         PKCS8_PRIV_KEY_INFO *p8inf = NULL;
 202         EVP_PKEY *pkey = NULL;
 203         char pass[50], *passin = NULL, *passout = NULL, *p8pass = NULL;
 204         int ret = 1;
 205
 206         if (single_execution) {
 207                 if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
 208                         perror("pledge");
 209                         exit(1);
 210                 }
 211         }
 212
 213         memset(&pkcs8_config, 0, sizeof(pkcs8_config));
 214
 215         pkcs8_config.iter = PKCS12_DEFAULT_ITER;
 216         pkcs8_config.informat = FORMAT_PEM;
 217         pkcs8_config.outformat = FORMAT_PEM;
 218         pkcs8_config.pbe_nid = -1;
 219
 220         if (options_parse(argc, argv, pkcs8_options, NULL, NULL) != 0) {
 221                 pkcs8_usage();
 222                 return (1);
 223         }
 224
 225         if (!app_passwd(bio_err, pkcs8_config.passargin,
 226             pkcs8_config.passargout, &passin, &passout)) {
 227                 BIO_printf(bio_err, "Error getting passwords\n");
 228                 goto end;
 229         }
 230         if ((pkcs8_config.pbe_nid == -1) && !pkcs8_config.cipher)
 231                 pkcs8_config.pbe_nid = NID_pbeWithMD5AndDES_CBC;
 232
 233         if (pkcs8_config.infile) {
 234                 if (!(in = BIO_new_file(pkcs8_config.infile, "rb"))) {
 235                         BIO_printf(bio_err,
 236                             "Can't open input file '%s'\n",
 237                             pkcs8_config.infile);
 238                         goto end;
 239                 }
 240         } else
 241                 in = BIO_new_fp(stdin, BIO_NOCLOSE);
 242
 243         if (pkcs8_config.outfile) {
 244                 if (!(out = BIO_new_file(pkcs8_config.outfile, "wb"))) {
 245                         BIO_printf(bio_err, "Can't open output file '%s'\n",
 246                             pkcs8_config.outfile);
 247                         goto end;
 248                 }
 249         } else {
 250                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 251         }
 252         if (pkcs8_config.topk8) {
 253                 pkey = load_key(bio_err, pkcs8_config.infile,
 254                     pkcs8_config.informat, 1, passin, "key");
 255                 if (!pkey)
 256                         goto end;
 257                 if (!(p8inf = EVP_PKEY2PKCS8(pkey))) {
 258                         BIO_printf(bio_err, "Error converting key\n");
 259                         ERR_print_errors(bio_err);
 260                         goto end;
 261                 }
 262                 if (pkcs8_config.nocrypt) {
 263                         if (pkcs8_config.outformat == FORMAT_PEM)
 264                                 PEM_write_bio_PKCS8_PRIV_KEY_INFO(out, p8inf);
 265                         else if (pkcs8_config.outformat == FORMAT_ASN1)
 266                                 i2d_PKCS8_PRIV_KEY_INFO_bio(out, p8inf);
 267                         else {
 268                                 BIO_printf(bio_err,
 269                                     "Bad format specified for key\n");
 270                                 goto end;
 271                         }
 272                 } else {
 273                         if (passout)
 274                                 p8pass = passout;
 275                         else {
 276                                 p8pass = pass;
 277                                 if (EVP_read_pw_string(pass, sizeof pass,
 278                                     "Enter Encryption Password:", 1))
 279                                         goto end;
 280                         }
 281                         if (!(p8 = PKCS8_encrypt(pkcs8_config.pbe_nid,
 282                             pkcs8_config.cipher, p8pass, strlen(p8pass),
 283                             NULL, 0, pkcs8_config.iter, p8inf))) {
 284                                 BIO_printf(bio_err, "Error encrypting key\n");
 285                                 ERR_print_errors(bio_err);
 286                                 goto end;
 287                         }
 288                         if (pkcs8_config.outformat == FORMAT_PEM)
 289                                 PEM_write_bio_PKCS8(out, p8);
 290                         else if (pkcs8_config.outformat == FORMAT_ASN1)
 291                                 i2d_PKCS8_bio(out, p8);
 292                         else {
 293                                 BIO_printf(bio_err,
 294                                     "Bad format specified for key\n");
 295                                 goto end;
 296                         }
 297                 }
 298
 299                 ret = 0;
 300                 goto end;
 301         }
 302         if (pkcs8_config.nocrypt) {
 303                 if (pkcs8_config.informat == FORMAT_PEM)
 304                         p8inf = PEM_read_bio_PKCS8_PRIV_KEY_INFO(in, NULL,
 305                             NULL, NULL);
 306                 else if (pkcs8_config.informat == FORMAT_ASN1)
 307                         p8inf = d2i_PKCS8_PRIV_KEY_INFO_bio(in, NULL);
 308                 else {
 309                         BIO_printf(bio_err, "Bad format specified for key\n");
 310                         goto end;
 311                 }
 312         } else {
 313                 if (pkcs8_config.informat == FORMAT_PEM)
 314                         p8 = PEM_read_bio_PKCS8(in, NULL, NULL, NULL);
 315                 else if (pkcs8_config.informat == FORMAT_ASN1)
 316                         p8 = d2i_PKCS8_bio(in, NULL);
 317                 else {
 318                         BIO_printf(bio_err, "Bad format specified for key\n");
 319                         goto end;
 320                 }
 321
 322                 if (!p8) {
 323                         BIO_printf(bio_err, "Error reading key\n");
 324                         ERR_print_errors(bio_err);
 325                         goto end;
 326                 }
 327                 if (passin)
 328                         p8pass = passin;
 329                 else {
 330                         p8pass = pass;
 331                         EVP_read_pw_string(pass, sizeof pass,
 332                             "Enter Password:", 0);
 333                 }
 334                 p8inf = PKCS8_decrypt(p8, p8pass, strlen(p8pass));
 335         }
 336
 337         if (!p8inf) {
 338                 BIO_printf(bio_err, "Error decrypting key\n");
 339                 ERR_print_errors(bio_err);
 340                 goto end;
 341         }
 342         if (!(pkey = EVP_PKCS82PKEY(p8inf))) {
 343                 BIO_printf(bio_err, "Error converting key\n");
 344                 ERR_print_errors(bio_err);
 345                 goto end;
 346         }
 347         if (pkcs8_config.outformat == FORMAT_PEM)
 348                 PEM_write_bio_PrivateKey(out, pkey, NULL, NULL, 0, NULL,
 349                     passout);
 350         else if (pkcs8_config.outformat == FORMAT_ASN1)
 351                 i2d_PrivateKey_bio(out, pkey);
 352         else {
 353                 BIO_printf(bio_err, "Bad format specified for key\n");
 354                 goto end;
 355         }
 356         ret = 0;
 357
 358  end:
 359         X509_SIG_free(p8);
 360         PKCS8_PRIV_KEY_INFO_free(p8inf);
 361         EVP_PKEY_free(pkey);
 362         BIO_free_all(out);
 363         BIO_free(in);
 364         free(passin);
 365         free(passout);
 366
 367         return ret;
 368 }