starting with auditor signing tool
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Christian Grothoff
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src/mint-tools/taler-auditor-sign.c
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192
src/mint-tools/taler-auditor-sign.c
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/*
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This file is part of TALER
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Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors)
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file taler-auditor-sign.c
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* @brief Tool used by the auditor to sign the mint's master key and the
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* denomination key(s).
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* @author Christian Grothoff
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*/
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#include <platform.h>
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#include "taler_mintdb_lib.h"
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/**
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* Filename of the auditor's private key.
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*/
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static char *auditor_key_file;
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/**
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* Mint's public key (in Crockford base32 encoding).
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*/
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static char *mint_public_key;
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/**
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* File with the Mint's denomination keys to sign, itself
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* signed by the Mint's public key.
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*/
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static char *mint_request_file;
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/**
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* Where should we write the auditor's signature?
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*/
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static char *output_file;
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/**
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* Handle to the auditor's configuration
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*/
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static struct GNUNET_CONFIGURATION_Handle *kcfg;
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/**
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* Master public key of the mint.
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*/
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static struct TALER_MasterPublicKeyP master_public_key;
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/**
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* The main function of the taler-auditor-sign tool. This tool is used
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* to sign a mint's master and denomination keys, affirming that the
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* auditor is aware of them and will validate the mint's database with
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* respect to these keys.
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*
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* @param argc number of arguments from the command line
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* @param argv command line arguments
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* @return 0 ok, 1 on error
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*/
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int
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main (int argc,
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char *const *argv)
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{
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static const struct GNUNET_GETOPT_CommandLineOption options[] = {
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{'a', "auditor-key", "FILE",
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"file containing the private key of the auditor", 1,
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&GNUNET_GETOPT_set_filename, &auditor_key_file},
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TALER_GETOPT_OPTION_HELP ("Private key of the auditor to use for signing"),
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{'m', "mint-key", "KEY",
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"public key of the mint (Crockford base32 encoded)", 1,
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&GNUNET_GETOPT_set_filename, &mint_public_key},
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{'r', "mint-request", "FILE",
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"set of keys the mint requested the auditor to sign", 0,
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&GNUNET_GETOPT_set_string, &mint_request_file},
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{'o', "output", "FILE",
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"where to write our signature", 0,
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&GNUNET_GETOPT_set_string, &output_file},
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GNUNET_GETOPT_OPTION_VERSION (VERSION "-" VCS_VERSION),
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GNUNET_GETOPT_OPTION_END
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};
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struct GNUNET_CRYPTO_EddsaPrivateKey *eddsa_priv;
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struct GNUNET_DISK_FileHandle *fh;
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struct GNUNET_DISK_FileHandle *fout;
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off_t in_size;
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GNUNET_assert (GNUNET_OK ==
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GNUNET_log_setup ("taler-mint-keyup",
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"WARNING",
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NULL));
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if (GNUNET_GETOPT_run ("taler-mint-keyup",
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options,
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argc, argv) < 0)
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return 1;
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if (NULL == auditor_key_file)
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{
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fprintf (stderr,
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"Auditor key file not given\n");
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return 1;
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}
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eddsa_priv = GNUNET_CRYPTO_eddsa_key_create_from_file (auditor_key_file);
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if (NULL == eddsa_priv)
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{
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fprintf (stderr,
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"Failed to initialize auditor key from file `%s'\n",
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auditor_key_file);
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return 1;
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}
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if (NULL == mint_public_key)
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{
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fprintf (stderr,
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"Mint public key not given\n");
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return 1;
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}
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if (GNUNET_OK !=
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GNUNET_STRINGS_string_to_data (mint_public_key,
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strlen (mint_public_key),
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&master_public_key,
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sizeof (master_public_key)))
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{
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fprintf (stderr,
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"Public key `%s' malformed\n",
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mint_public_key);
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return 1;
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}
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if (NULL == mint_request_file)
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{
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fprintf (stderr,
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"Mint signing request not given\n");
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return 1;
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}
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fh = GNUNET_DISK_file_open (mint_request_file,
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GNUNET_DISK_OPEN_READ,
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GNUNET_DISK_PERM_NONE);
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if (NULL == fh)
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{
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fprintf (stderr,
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"Failed to open file `%s': %s\n",
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mint_request_file,
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STRERROR (errno));
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return 1;
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}
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if (GNUNET_OK !=
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GNUNET_DISK_file_handle_size (fh,
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&in_size))
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{
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fprintf (stderr,
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"Failed to obtain input file size `%s': %s\n",
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mint_request_file,
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STRERROR (errno));
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GNUNET_DISK_file_close (fh);
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return 1;
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}
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if (NULL == output_file)
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{
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fprintf (stderr,
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"Output file not given\n");
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GNUNET_DISK_file_close (fh);
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return 1;
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}
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fout = GNUNET_DISK_file_open (output_file,
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GNUNET_DISK_OPEN_READ |
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GNUNET_DISK_OPEN_TRUNCATE |
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GNUNET_DISK_OPEN_CREATE,
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GNUNET_DISK_PERM_USER_READ |
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GNUNET_DISK_PERM_USER_WRITE |
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GNUNET_DISK_PERM_GROUP_READ |
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GNUNET_DISK_PERM_OTHER_READ);
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if (NULL == fout)
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{
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fprintf (stderr,
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"Failed to open file `%s': %s\n",
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output_file,
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STRERROR (errno));
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GNUNET_DISK_file_close (fh);
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return 1;
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}
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/* FIXME: finally do real work... */
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GNUNET_free (eddsa_priv);
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return 0;
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}
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/* end of taler-auditor-sign.c */
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