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-ecc.c
23 * @brief tool to manipulate ECC key files
24 * @author Christian Grothoff
27 #include "gnunet_util_lib.h"
28 #include "gnunet_testing_lib.h"
33 * Flag for printing public key.
35 static int print_public_key;
38 * Flag for printing hash of public key.
40 static int print_peer_identity;
43 * Flag for printing short hash of public key.
45 static int print_short_identity;
48 * Option set to create a bunch of keys at once.
50 static unsigned int make_keys;
53 * The private information of an ECC key pair.
54 * NOTE: this must match the definition in crypto_ksk.c and crypto_ecc.c!
56 struct GNUNET_CRYPTO_EccPrivateKey
63 * Create a flat file with a large number of key pairs for testing.
66 create_keys (const char *fn)
68 static char pad[GNUNET_TESTING_HOSTKEYFILESIZE];
70 struct GNUNET_CRYPTO_EccPrivateKey *pk;
71 struct GNUNET_CRYPTO_EccPrivateKeyBinaryEncoded *enc;
73 if (NULL == (f = fopen (fn, "w+")))
76 _("Failed to open `%s': %s\n"),
82 _("Generating %u keys, please wait"),
84 while (0 < make_keys--)
88 if (NULL == (pk = GNUNET_CRYPTO_ecc_key_create ()))
93 enc = GNUNET_CRYPTO_ecc_encode_key (pk);
94 GNUNET_assert (ntohs (enc->size) <= GNUNET_TESTING_HOSTKEYFILESIZE);
95 if ( (ntohs (enc->size) != fwrite (enc, 1, ntohs (enc->size), f)) ||
96 (GNUNET_TESTING_HOSTKEYFILESIZE - ntohs (enc->size)
97 != fwrite (pad, 1, GNUNET_TESTING_HOSTKEYFILESIZE - ntohs (enc->size), f)) )
100 _("\nFailed to write to `%s': %s\n"),
103 GNUNET_CRYPTO_ecc_key_free (pk);
107 GNUNET_CRYPTO_ecc_key_free (pk);
110 if (UINT_MAX == make_keys)
115 _("\nError, %u keys not generated\n"), make_keys);
121 * Main function that will be run by the scheduler.
124 * @param args remaining command-line arguments
125 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
126 * @param cfg configuration
129 run (void *cls, char *const *args, const char *cfgfile,
130 const struct GNUNET_CONFIGURATION_Handle *cfg)
132 struct GNUNET_CRYPTO_EccPrivateKey *pk;
133 struct GNUNET_CRYPTO_EccPublicKeyBinaryEncoded pub;
134 struct GNUNET_PeerIdentity pid;
138 fprintf (stderr, _("No hostkey file specified on command line\n"));
143 create_keys (args[0]);
146 pk = GNUNET_CRYPTO_ecc_key_create_from_file (args[0]);
149 if (print_public_key)
153 GNUNET_CRYPTO_ecc_key_get_public (pk, &pub);
154 s = GNUNET_CRYPTO_ecc_public_key_to_string (&pub);
155 fprintf (stdout, "%s\n", s);
158 if (print_peer_identity)
160 struct GNUNET_CRYPTO_HashAsciiEncoded enc;
162 GNUNET_CRYPTO_ecc_key_get_public (pk, &pub);
163 GNUNET_CRYPTO_hash (&pub, sizeof (pub), &pid.hashPubKey);
164 GNUNET_CRYPTO_hash_to_enc (&pid.hashPubKey, &enc);
165 fprintf (stdout, "%s\n", enc.encoding);
167 if (print_short_identity)
169 struct GNUNET_CRYPTO_ShortHashAsciiEncoded enc;
170 struct GNUNET_CRYPTO_ShortHashCode sh;
172 GNUNET_CRYPTO_ecc_key_get_public (pk, &pub);
173 GNUNET_CRYPTO_short_hash (&pub, sizeof (pub), &sh);
174 GNUNET_CRYPTO_short_hash_to_enc (&sh, &enc);
175 fprintf (stdout, "%s\n", enc.short_encoding);
177 GNUNET_CRYPTO_ecc_key_free (pk);
182 * Program to manipulate ECC key files.
184 * @param argc number of arguments from the command line
185 * @param argv command line arguments
186 * @return 0 ok, 1 on error
189 main (int argc, char *const *argv)
191 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
192 { 'g', "generate-keys", "COUNT",
193 gettext_noop ("create COUNT public-private key pairs (for testing)"),
194 1, &GNUNET_GETOPT_set_uint, &make_keys },
195 { 'p', "print-public-key", NULL,
196 gettext_noop ("print the public key in ASCII format"),
197 0, &GNUNET_GETOPT_set_one, &print_public_key },
198 { 'P', "print-peer-identity", NULL,
199 gettext_noop ("print the hash of the public key in ASCII format"),
200 0, &GNUNET_GETOPT_set_one, &print_peer_identity },
201 { 's', "print-short-identity", NULL,
202 gettext_noop ("print the short hash of the public key in ASCII format"),
203 0, &GNUNET_GETOPT_set_one, &print_short_identity },
204 GNUNET_GETOPT_OPTION_END
208 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
212 GNUNET_PROGRAM_run (argc, argv, "gnunet-ecc [OPTIONS] keyfile",
213 gettext_noop ("Manipulate GNUnet private ECC key files"),
214 options, &run, NULL)) ? 0 : 1;
215 GNUNET_free ((void*) argv);
219 /* end of gnunet-ecc.c */