C++ (Cpp) gnutls_dh_get_secret_bitsの例

コード例 #1

ファイル: common.c プロジェクト: philippe-goetz/gnutls

static void
print_dh_info (gnutls_session_t session, const char *str, int print)
{
    printf ("- %sDiffie-Hellman parameters\n", str);
    printf (" - Using prime: %d bits\n",
            gnutls_dh_get_prime_bits (session));
    printf (" - Secret key: %d bits\n",
            gnutls_dh_get_secret_bits (session));
    printf (" - Peer's public key: %d bits\n",
            gnutls_dh_get_peers_public_bits (session));

    if (print)
      {
          int ret;
          gnutls_datum_t raw_gen = { NULL, 0 };
          gnutls_datum_t raw_prime = { NULL, 0 };
          gnutls_dh_params_t dh_params = NULL;
          unsigned char *params_data = NULL;
          size_t params_data_size = 0;

          ret = gnutls_dh_get_group (session, &raw_gen, &raw_prime);
          if (ret)
            {
                fprintf (stderr, "gnutls_dh_get_group %d\n", ret);
                goto out;
            }

          ret = gnutls_dh_params_init (&dh_params);
          if (ret)
            {
                fprintf (stderr, "gnutls_dh_params_init %d\n", ret);
                goto out;
            }

          ret =
              gnutls_dh_params_import_raw (dh_params, &raw_prime,
                                           &raw_gen);
          if (ret)
            {
                fprintf (stderr, "gnutls_dh_params_import_raw %d\n", ret);
                goto out;
            }

          ret = gnutls_dh_params_export_pkcs3 (dh_params,
                                               GNUTLS_X509_FMT_PEM,
                                               params_data,
                                               &params_data_size);
          if (ret != GNUTLS_E_SHORT_MEMORY_BUFFER)
            {
                fprintf (stderr, "gnutls_dh_params_export_pkcs3 %d\n",
                         ret);
                goto out;
            }

          params_data = gnutls_malloc (params_data_size);
          if (!params_data)
            {
                fprintf (stderr, "gnutls_malloc %d\n", ret);
                goto out;
            }

          ret = gnutls_dh_params_export_pkcs3 (dh_params,
                                               GNUTLS_X509_FMT_PEM,
                                               params_data,
                                               &params_data_size);
          if (ret)
            {
                fprintf (stderr, "gnutls_dh_params_export_pkcs3-2 %d\n",
                         ret);
                goto out;
            }

          printf (" - PKCS#3 format:\n\n%.*s\n", (int) params_data_size,
                  params_data);

        out:
          gnutls_free (params_data);
          gnutls_free (raw_prime.data);
          gnutls_free (raw_gen.data);
          gnutls_dh_params_deinit (dh_params);
      }
}

コード例 #2

ファイル: gnutlsxx.cpp プロジェクト: Coacher/ellcurves-gnutls-gsoc2012

unsigned int session::get_dh_secret_bits () const
{
    return RETWRAP (gnutls_dh_get_secret_bits (s));
}