apps/spkac.c

   1 /*
   2  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   3  * 1999. Based on an original idea by Massimiliano Pala (madwolf@openca.org).
   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 #include <stdio.h>
  59 #include <stdlib.h>
  60 #include <string.h>
  61 #include <time.h>
  62 #include "apps.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/conf.h>
  65 #include <openssl/err.h>
  66 #include <openssl/evp.h>
  67 #include <openssl/lhash.h>
  68 #include <openssl/x509.h>
  69 #include <openssl/pem.h>
  70
  71 typedef enum OPTION_choice {
  72     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  73     OPT_NOOUT, OPT_PUBKEY, OPT_VERIFY, OPT_IN, OPT_OUT,
  74     OPT_ENGINE, OPT_KEY, OPT_CHALLENGE, OPT_PASSIN, OPT_SPKAC,
  75     OPT_SPKSECT
  76 } OPTION_CHOICE;
  77
  78 OPTIONS spkac_options[] = {
  79     {"help", OPT_HELP, '-', "Display this summary"},
  80     {"in", OPT_IN, '<', "Input file"},
  81     {"out", OPT_OUT, '>', "Output file"},
  82     {"key", OPT_KEY, '<', "Create SPKAC using private key"},
  83     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  84     {"challenge", OPT_CHALLENGE, 's', "Challenge string"},
  85     {"spkac", OPT_SPKAC, 's', "Alternative SPKAC name"},
  86     {"noout", OPT_NOOUT, '-', "Don't print SPKAC"},
  87     {"pubkey", OPT_PUBKEY, '-', "Output public key"},
  88     {"verify", OPT_VERIFY, '-', "Verify SPKAC signature"},
  89     {"spksect", OPT_SPKSECT, 's'},
  90 #ifndef OPENSSL_NO_ENGINE
  91     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  92 #endif
  93     {NULL}
  94 };
  95
  96 int spkac_main(int argc, char **argv)
  97 {
  98     BIO *out = NULL;
  99     CONF *conf = NULL;
 100     ENGINE *e = NULL;
 101     EVP_PKEY *pkey = NULL;
 102     NETSCAPE_SPKI *spki = NULL;
 103     char *challenge = NULL, *keyfile = NULL;
 104     char *infile = NULL, *outfile = NULL, *passinarg = NULL, *passin = NULL;
 105     char *spkstr = NULL, *prog;
 106     const char *spkac = "SPKAC", *spksect = "default";
 107     int i, ret = 1, verify = 0, noout = 0, pubkey = 0;
 108     OPTION_CHOICE o;
 109
 110     prog = opt_init(argc, argv, spkac_options);
 111     while ((o = opt_next()) != OPT_EOF) {
 112         switch (o) {
 113         case OPT_EOF:
 114         case OPT_ERR:
 115             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 116             goto end;
 117         case OPT_HELP:
 118             opt_help(spkac_options);
 119             ret = 0;
 120             goto end;
 121         case OPT_IN:
 122             infile = opt_arg();
 123             break;
 124         case OPT_OUT:
 125             outfile = opt_arg();
 126             break;
 127         case OPT_NOOUT:
 128             noout = 1;
 129             break;
 130         case OPT_PUBKEY:
 131             pubkey = 1;
 132             break;
 133         case OPT_VERIFY:
 134             verify = 1;
 135             break;
 136         case OPT_PASSIN:
 137             passinarg = opt_arg();
 138             break;
 139         case OPT_KEY:
 140             keyfile = opt_arg();
 141             break;
 142         case OPT_CHALLENGE:
 143             challenge = opt_arg();
 144             break;
 145         case OPT_SPKAC:
 146             spkac = opt_arg();
 147             break;
 148         case OPT_SPKSECT:
 149             spksect = opt_arg();
 150             break;
 151         case OPT_ENGINE:
 152             e = setup_engine(opt_arg(), 0);
 153             break;
 154         }
 155     }
 156     argc = opt_num_rest();
 157     argv = opt_rest();
 158
 159     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 160         BIO_printf(bio_err, "Error getting password\n");
 161         goto end;
 162     }
 163
 164     if (keyfile) {
 165         pkey = load_key(strcmp(keyfile, "-") ? keyfile : NULL,
 166                         FORMAT_PEM, 1, passin, e, "private key");
 167         if (!pkey) {
 168             goto end;
 169         }
 170         spki = NETSCAPE_SPKI_new();
 171         if (challenge)
 172             ASN1_STRING_set(spki->spkac->challenge,
 173                             challenge, (int)strlen(challenge));
 174         NETSCAPE_SPKI_set_pubkey(spki, pkey);
 175         NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());
 176         spkstr = NETSCAPE_SPKI_b64_encode(spki);
 177
 178         out = bio_open_default(outfile, 'w', FORMAT_TEXT);
 179         if (out == NULL)
 180             goto end;
 181         BIO_printf(out, "SPKAC=%s\n", spkstr);
 182         OPENSSL_free(spkstr);
 183         ret = 0;
 184         goto end;
 185     }
 186
 187     if ((conf = app_load_config(infile)) == NULL)
 188         goto end;
 189     if (!app_load_modules(conf))
 190         goto end;
 191
 192     spkstr = NCONF_get_string(conf, spksect, spkac);
 193
 194     if (!spkstr) {
 195         BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n", spkac);
 196         ERR_print_errors(bio_err);
 197         goto end;
 198     }
 199
 200     spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);
 201
 202     if (!spki) {
 203         BIO_printf(bio_err, "Error loading SPKAC\n");
 204         ERR_print_errors(bio_err);
 205         goto end;
 206     }
 207
 208     out = bio_open_default(outfile, 'w', FORMAT_TEXT);
 209     if (out == NULL)
 210         goto end;
 211
 212     if (!noout)
 213         NETSCAPE_SPKI_print(out, spki);
 214     pkey = NETSCAPE_SPKI_get_pubkey(spki);
 215     if (verify) {
 216         i = NETSCAPE_SPKI_verify(spki, pkey);
 217         if (i > 0)
 218             BIO_printf(bio_err, "Signature OK\n");
 219         else {
 220             BIO_printf(bio_err, "Signature Failure\n");
 221             ERR_print_errors(bio_err);
 222             goto end;
 223         }
 224     }
 225     if (pubkey)
 226         PEM_write_bio_PUBKEY(out, pkey);
 227
 228     ret = 0;
 229
 230  end:
 231     NCONF_free(conf);
 232     NETSCAPE_SPKI_free(spki);
 233     BIO_free_all(out);
 234     EVP_PKEY_free(pkey);
 235     OPENSSL_free(passin);
 236     return (ret);
 237 }