crypto/openssl/apps/spkac.c

   1 /*
   2  * Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <time.h>
  14 #include "apps.h"
  15 #include "progs.h"
  16 #include <openssl/bio.h>
  17 #include <openssl/conf.h>
  18 #include <openssl/err.h>
  19 #include <openssl/evp.h>
  20 #include <openssl/x509.h>
  21 #include <openssl/pem.h>
  22
  23 typedef enum OPTION_choice {
  24     OPT_COMMON,
  25     OPT_NOOUT, OPT_PUBKEY, OPT_VERIFY, OPT_IN, OPT_OUT,
  26     OPT_ENGINE, OPT_KEY, OPT_CHALLENGE, OPT_PASSIN, OPT_SPKAC,
  27     OPT_SPKSECT, OPT_KEYFORM, OPT_DIGEST,
  28     OPT_PROV_ENUM
  29 } OPTION_CHOICE;
  30
  31 const OPTIONS spkac_options[] = {
  32     OPT_SECTION("General"),
  33     {"help", OPT_HELP, '-', "Display this summary"},
  34     {"spksect", OPT_SPKSECT, 's',
  35      "Specify the name of an SPKAC-dedicated section of configuration"},
  36 #ifndef OPENSSL_NO_ENGINE
  37     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  38 #endif
  39
  40     OPT_SECTION("Input"),
  41     {"in", OPT_IN, '<', "Input file"},
  42     {"key", OPT_KEY, '<', "Create SPKAC using private key"},
  43     {"keyform", OPT_KEYFORM, 'f', "Private key file format (ENGINE, other values ignored)"},
  44     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  45     {"challenge", OPT_CHALLENGE, 's', "Challenge string"},
  46     {"spkac", OPT_SPKAC, 's', "Alternative SPKAC name"},
  47
  48     OPT_SECTION("Output"),
  49     {"digest", OPT_DIGEST, 's', "Sign new SPKAC with the specified digest (default: MD5)" },
  50     {"out", OPT_OUT, '>', "Output file"},
  51     {"noout", OPT_NOOUT, '-', "Don't print SPKAC"},
  52     {"pubkey", OPT_PUBKEY, '-', "Output public key"},
  53     {"verify", OPT_VERIFY, '-', "Verify SPKAC signature"},
  54
  55     OPT_PROV_OPTIONS,
  56     {NULL}
  57 };
  58
  59 int spkac_main(int argc, char **argv)
  60 {
  61     BIO *out = NULL;
  62     CONF *conf = NULL;
  63     ENGINE *e = NULL;
  64     EVP_PKEY *pkey = NULL;
  65     NETSCAPE_SPKI *spki = NULL;
  66     char *challenge = NULL, *keyfile = NULL;
  67     char *infile = NULL, *outfile = NULL, *passinarg = NULL, *passin = NULL;
  68     char *spkstr = NULL, *prog;
  69     const char *spkac = "SPKAC", *spksect = "default";
  70     const char *digest = "MD5";
  71     EVP_MD *md = NULL;
  72     int i, ret = 1, verify = 0, noout = 0, pubkey = 0;
  73     int keyformat = FORMAT_UNDEF;
  74     OPTION_CHOICE o;
  75
  76     prog = opt_init(argc, argv, spkac_options);
  77     while ((o = opt_next()) != OPT_EOF) {
  78         switch (o) {
  79         case OPT_EOF:
  80         case OPT_ERR:
  81  opthelp:
  82             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  83             goto end;
  84         case OPT_HELP:
  85             opt_help(spkac_options);
  86             ret = 0;
  87             goto end;
  88         case OPT_IN:
  89             infile = opt_arg();
  90             break;
  91         case OPT_OUT:
  92             outfile = opt_arg();
  93             break;
  94         case OPT_NOOUT:
  95             noout = 1;
  96             break;
  97         case OPT_PUBKEY:
  98             pubkey = 1;
  99             break;
 100         case OPT_VERIFY:
 101             verify = 1;
 102             break;
 103         case OPT_PASSIN:
 104             passinarg = opt_arg();
 105             break;
 106         case OPT_KEY:
 107             keyfile = opt_arg();
 108             break;
 109         case OPT_KEYFORM:
 110             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
 111                 goto opthelp;
 112             break;
 113         case OPT_CHALLENGE:
 114             challenge = opt_arg();
 115             break;
 116         case OPT_SPKAC:
 117             spkac = opt_arg();
 118             break;
 119         case OPT_SPKSECT:
 120             spksect = opt_arg();
 121             break;
 122         case OPT_DIGEST:
 123             digest = opt_arg();
 124             break;
 125         case OPT_ENGINE:
 126             e = setup_engine(opt_arg(), 0);
 127             break;
 128         case OPT_PROV_CASES:
 129             if (!opt_provider(o))
 130                 goto end;
 131             break;
 132         }
 133     }
 134
 135     /* No extra arguments. */
 136     argc = opt_num_rest();
 137     if (argc != 0)
 138         goto opthelp;
 139
 140     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 141         BIO_printf(bio_err, "Error getting password\n");
 142         goto end;
 143     }
 144
 145     if (keyfile != NULL) {
 146         if (!opt_md(digest, &md))
 147             goto end;
 148
 149         pkey = load_key(strcmp(keyfile, "-") ? keyfile : NULL,
 150                         keyformat, 1, passin, e, "private key");
 151         if (pkey == NULL)
 152             goto end;
 153         spki = NETSCAPE_SPKI_new();
 154         if (spki == NULL)
 155             goto end;
 156         if (challenge != NULL)
 157             ASN1_STRING_set(spki->spkac->challenge,
 158                             challenge, (int)strlen(challenge));
 159         if (!NETSCAPE_SPKI_set_pubkey(spki, pkey)) {
 160             BIO_printf(bio_err, "Error setting public key\n");
 161             goto end;
 162         }
 163         i = NETSCAPE_SPKI_sign(spki, pkey, md);
 164         if (i <= 0) {
 165             BIO_printf(bio_err, "Error signing SPKAC\n");
 166             goto end;
 167         }
 168         spkstr = NETSCAPE_SPKI_b64_encode(spki);
 169         if (spkstr == NULL)
 170             goto end;
 171
 172         out = bio_open_default(outfile, 'w', FORMAT_TEXT);
 173         if (out == NULL) {
 174             OPENSSL_free(spkstr);
 175             goto end;
 176         }
 177         BIO_printf(out, "SPKAC=%s\n", spkstr);
 178         OPENSSL_free(spkstr);
 179         ret = 0;
 180         goto end;
 181     }
 182
 183     if ((conf = app_load_config(infile)) == NULL)
 184         goto end;
 185
 186     spkstr = NCONF_get_string(conf, spksect, spkac);
 187
 188     if (spkstr == NULL) {
 189         BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n", spkac);
 190         ERR_print_errors(bio_err);
 191         goto end;
 192     }
 193
 194     spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);
 195
 196     if (spki == NULL) {
 197         BIO_printf(bio_err, "Error loading SPKAC\n");
 198         ERR_print_errors(bio_err);
 199         goto end;
 200     }
 201
 202     out = bio_open_default(outfile, 'w', FORMAT_TEXT);
 203     if (out == NULL)
 204         goto end;
 205
 206     if (!noout)
 207         NETSCAPE_SPKI_print(out, spki);
 208     pkey = NETSCAPE_SPKI_get_pubkey(spki);
 209     if (verify) {
 210         i = NETSCAPE_SPKI_verify(spki, pkey);
 211         if (i > 0) {
 212             BIO_printf(bio_err, "Signature OK\n");
 213         } else {
 214             BIO_printf(bio_err, "Signature Failure\n");
 215             ERR_print_errors(bio_err);
 216             goto end;
 217         }
 218     }
 219     if (pubkey)
 220         PEM_write_bio_PUBKEY(out, pkey);
 221
 222     ret = 0;
 223
 224  end:
 225     EVP_MD_free(md);
 226     NCONF_free(conf);
 227     NETSCAPE_SPKI_free(spki);
 228     BIO_free_all(out);
 229     EVP_PKEY_free(pkey);
 230     release_engine(e);
 231     OPENSSL_free(passin);
 232     return ret;
 233 }