2 This file is part of GNUnet.
3 (C) 2012 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file util/gnunet-rsa.c
23 * @brief tool to manipulate RSA key files
24 * @author Christian Grothoff
27 #include "gnunet_util_lib.h"
32 * Flag for printing public key.
34 static int print_public_key;
37 * Flag for printing hash of public key.
39 static int print_peer_identity;
42 * Flag for printing short hash of public key.
44 static int print_short_identity;
47 * Use weak random number generator for key generation.
49 static int weak_random;
53 * Main function that will be run by the scheduler.
56 * @param args remaining command-line arguments
57 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
58 * @param cfg configuration
61 run (void *cls, char *const *args, const char *cfgfile,
62 const struct GNUNET_CONFIGURATION_Handle *cfg)
64 struct GNUNET_CRYPTO_RsaPrivateKey *pk;
65 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
66 struct GNUNET_PeerIdentity pid;
70 fprintf (stderr, _("No hostkey file specified on command line\n"));
74 GNUNET_CRYPTO_random_disable_entropy_gathering ();
75 pk = GNUNET_CRYPTO_rsa_key_create_from_file (args[0]);
82 GNUNET_CRYPTO_rsa_key_get_public (pk, &pub);
83 s = GNUNET_CRYPTO_rsa_public_key_to_string (&pub);
84 fprintf (stdout, "%s\n", s);
87 if (print_peer_identity)
89 struct GNUNET_CRYPTO_HashAsciiEncoded enc;
91 GNUNET_CRYPTO_rsa_key_get_public (pk, &pub);
92 GNUNET_CRYPTO_hash (&pub, sizeof (pub), &pid.hashPubKey);
93 GNUNET_CRYPTO_hash_to_enc (&pid.hashPubKey, &enc);
94 fprintf (stdout, "%s\n", enc.encoding);
96 if (print_short_identity)
98 struct GNUNET_CRYPTO_ShortHashAsciiEncoded enc;
99 struct GNUNET_CRYPTO_ShortHashCode sh;
101 GNUNET_CRYPTO_rsa_key_get_public (pk, &pub);
102 GNUNET_CRYPTO_short_hash (&pub, sizeof (pub), &sh);
103 GNUNET_CRYPTO_short_hash_to_enc (&sh, &enc);
104 fprintf (stdout, "%s\n", enc.short_encoding);
106 GNUNET_CRYPTO_rsa_key_free (pk);
111 * Program to manipulate RSA key files.
113 * @param argc number of arguments from the command line
114 * @param argv command line arguments
115 * @return 0 ok, 1 on error
118 main (int argc, char *const*argv)
120 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
121 { 'p', "print-public-key", NULL,
122 gettext_noop ("print the public key in ASCII format"),
123 0, &GNUNET_GETOPT_set_one, &print_public_key },
124 { 'P', "print-peer-identity", NULL,
125 gettext_noop ("print the hash of the public key in ASCII format"),
126 0, &GNUNET_GETOPT_set_one, &print_peer_identity },
127 { 's', "print-short-identity", NULL,
128 gettext_noop ("print the short hash of the public key in ASCII format"),
129 0, &GNUNET_GETOPT_set_one, &print_short_identity },
130 { 'w', "weak-random", NULL,
131 gettext_noop ("use insecure, weak random number generator for key generation (for testing only)"),
132 0, &GNUNET_GETOPT_set_one, &weak_random },
133 GNUNET_GETOPT_OPTION_END
137 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
141 GNUNET_PROGRAM_run (argc, argv, "gnunet-rsa [OPTIONS] keyfile",
142 gettext_noop ("Manipulate GNUnet private RSA key files"),
143 options, &run, NULL)) ? 0 : 1;
144 GNUNET_free ((void*) argv);
148 /* end of gnunet-rsa.c */