/**
* @file util/gnunet-ecc.c
- * @brief tool to manipulate ECC key files
+ * @brief tool to manipulate EDDSA key files
* @author Christian Grothoff
*/
#include "platform.h"
#include <gcrypt.h>
+/**
+ * Flag for listing public key.
+ */
+static int list_keys;
+
+/**
+ * Flag for listing public key.
+ */
+static int list_keys_count;
+
/**
* Flag for printing public key.
*/
static int print_public_key;
+/**
+ * Flag for printing the output of random example operations.
+ */
+static int print_examples_flag;
+
/**
* Flag for printing hash of public key.
*/
create_keys (const char *fn)
{
FILE *f;
- struct GNUNET_CRYPTO_EccPrivateKey *pk;
+ struct GNUNET_CRYPTO_EddsaPrivateKey *pk;
if (NULL == (f = fopen (fn, "w+")))
{
{
fprintf (stderr,
".");
- if (NULL == (pk = GNUNET_CRYPTO_ecc_key_create ()))
+ if (NULL == (pk = GNUNET_CRYPTO_eddsa_key_create ()))
{
GNUNET_break (0);
break;
}
+static void
+print_hex (char *msg, void *buf, size_t size)
+{
+ size_t i;
+ printf ("%s: ", msg);
+ for (i = 0; i < size; i++)
+ {
+ printf ("%02hhx", ((char *)buf)[i]);
+ }
+ printf ("\n");
+}
+
+
+static void
+print_examples_ecdh ()
+{
+ struct GNUNET_CRYPTO_EcdhePrivateKey *dh_priv1;
+ struct GNUNET_CRYPTO_EcdhePublicKey *dh_pub1;
+ struct GNUNET_CRYPTO_EcdhePrivateKey *dh_priv2;
+ struct GNUNET_CRYPTO_EcdhePublicKey *dh_pub2;
+ struct GNUNET_HashCode hash;
+ char buf[128];
+
+ dh_pub1 = GNUNET_new (struct GNUNET_CRYPTO_EcdhePublicKey);
+ dh_priv1 = GNUNET_CRYPTO_ecdhe_key_create ();
+ dh_pub2 = GNUNET_new (struct GNUNET_CRYPTO_EcdhePublicKey);
+ dh_priv2 = GNUNET_CRYPTO_ecdhe_key_create ();
+ GNUNET_CRYPTO_ecdhe_key_get_public (dh_priv1, dh_pub1);
+ GNUNET_CRYPTO_ecdhe_key_get_public (dh_priv2, dh_pub2);
+
+ GNUNET_assert (NULL != GNUNET_STRINGS_data_to_string (dh_priv1, 32, buf, 128));
+ printf ("ECDHE key 1:\n");
+ printf ("private: %s\n", buf);
+ print_hex ("private(hex)", dh_priv1, sizeof *dh_priv1);
+ GNUNET_assert (NULL != GNUNET_STRINGS_data_to_string (dh_pub1, 32, buf, 128));
+ printf ("public: %s\n", buf);
+ print_hex ("public(hex)", dh_pub1, sizeof *dh_pub1);
+
+ GNUNET_assert (NULL != GNUNET_STRINGS_data_to_string (dh_priv2, 32, buf, 128));
+ printf ("ECDHE key 2:\n");
+ printf ("private: %s\n", buf);
+ print_hex ("private(hex)", dh_priv2, sizeof *dh_priv2);
+ GNUNET_assert (NULL != GNUNET_STRINGS_data_to_string (dh_pub2, 32, buf, 128));
+ printf ("public: %s\n", buf);
+ print_hex ("public(hex)", dh_pub2, sizeof *dh_pub2);
+
+ GNUNET_assert (GNUNET_OK == GNUNET_CRYPTO_ecc_ecdh (dh_priv1, dh_pub2, &hash));
+ GNUNET_assert (NULL != GNUNET_STRINGS_data_to_string (&hash, 64, buf, 128));
+ printf ("ECDH shared secret: %s\n", buf);
+
+ GNUNET_free (dh_priv1);
+ GNUNET_free (dh_priv2);
+ GNUNET_free (dh_pub1);
+ GNUNET_free (dh_pub2);
+}
+
+
+/**
+ * Print some random example operations to stdout.
+ */
+static void
+print_examples ()
+{
+ print_examples_ecdh ();
+ // print_examples_ecdsa ();
+ // print_examples_eddsa ();
+}
+
+
+static void
+print_key (const char *filename)
+{
+ struct GNUNET_DISK_FileHandle *fd;
+ struct GNUNET_CRYPTO_EddsaPrivateKey private_key;
+ struct GNUNET_CRYPTO_EddsaPublicKey public_key;
+ char *hostkeys_data;
+ char *hostkey_str;
+ uint64_t fs;
+ unsigned int total_hostkeys;
+ unsigned int c;
+
+ if (GNUNET_YES != GNUNET_DISK_file_test (filename))
+ {
+ fprintf (stderr,
+ _("Hostkeys file `%s' not found\n"),
+ filename);
+ return;
+ }
+
+ /* Check hostkey file size, read entire thing into memory */
+ if (GNUNET_OK != GNUNET_DISK_file_size (filename, &fs, GNUNET_YES, GNUNET_YES))
+ fs = 0;
+ if (0 == fs)
+ {
+ fprintf (stderr,
+ _("Hostkeys file `%s' is empty\n"),
+ filename);
+ return; /* File is empty */
+ }
+ if (0 != (fs % GNUNET_TESTING_HOSTKEYFILESIZE))
+ {
+ fprintf (stderr,
+ _("Incorrect hostkey file format: %s\n"),
+ filename);
+ return;
+ }
+ fd = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_NONE);
+ if (NULL == fd)
+ {
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "open", filename);
+ return;
+ }
+ hostkeys_data = GNUNET_malloc (fs);
+ if (fs != GNUNET_DISK_file_read (fd, hostkeys_data, fs))
+ {
+ fprintf (stderr,
+ _("Could not read hostkey file: %s\n"),
+ filename);
+ GNUNET_free (hostkeys_data);
+ GNUNET_DISK_file_close (fd);
+ return;
+ }
+ GNUNET_DISK_file_close (fd);
+
+ if (NULL == hostkeys_data)
+ return;
+ total_hostkeys = fs / GNUNET_TESTING_HOSTKEYFILESIZE;
+ for (c = 0; (c < total_hostkeys) && (c < list_keys_count); c++)
+ {
+ memcpy (&private_key,
+ hostkeys_data + (c * GNUNET_TESTING_HOSTKEYFILESIZE),
+ GNUNET_TESTING_HOSTKEYFILESIZE);
+ GNUNET_CRYPTO_eddsa_key_get_public (&private_key, &public_key);
+ hostkey_str = GNUNET_CRYPTO_eddsa_public_key_to_string (&public_key);
+ if (NULL != hostkey_str)
+ {
+ fprintf (stderr, "%4u: %s\n", c, hostkey_str);
+ GNUNET_free (hostkey_str);
+ }
+ else
+ fprintf (stderr, "%4u: %s\n", c, "invalid");
+ }
+ GNUNET_free (hostkeys_data);
+}
+
+
/**
* Main function that will be run by the scheduler.
*
run (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
- struct GNUNET_CRYPTO_EccPrivateKey *pk;
- struct GNUNET_CRYPTO_EccPublicSignKey pub;
-
+ if (print_examples_flag)
+ {
+ print_examples ();
+ return;
+ }
if (NULL == args[0])
{
- fprintf (stderr, _("No hostkey file specified on command line\n"));
+ FPRINTF (stderr,
+ "%s",
+ _("No hostkey file specified on command line\n"));
+ return;
+ }
+ if (list_keys)
+ {
+ print_key (args[0]);
return;
}
if (make_keys > 0)
create_keys (args[0]);
return;
}
- pk = GNUNET_CRYPTO_ecc_key_create_from_file (args[0]);
- if (NULL == pk)
- return;
if (print_public_key)
{
+ struct GNUNET_CRYPTO_EddsaPrivateKey *pk;
+ struct GNUNET_CRYPTO_EddsaPublicKey pub;
char *s;
- GNUNET_CRYPTO_ecc_key_get_public_for_signature (pk, &pub);
- s = GNUNET_CRYPTO_ecc_public_sign_key_to_string (&pub);
- fprintf (stdout, "%s\n", s);
+ pk = GNUNET_CRYPTO_eddsa_key_create_from_file (args[0]);
+ if (NULL == pk)
+ return;
+ GNUNET_CRYPTO_eddsa_key_get_public (pk, &pub);
+ s = GNUNET_CRYPTO_eddsa_public_key_to_string (&pub);
+ FPRINTF (stdout,
+ "%s\n",
+ s);
GNUNET_free (s);
+ GNUNET_free (pk);
}
if (print_peer_identity)
{
char *str;
+ struct GNUNET_DISK_FileHandle *keyfile;
+ struct GNUNET_CRYPTO_EddsaPrivateKey pk;
+ struct GNUNET_CRYPTO_EddsaPublicKey pub;
- GNUNET_CRYPTO_ecc_key_get_public_for_signature (pk, &pub);
- str = GNUNET_CRYPTO_ecc_public_sign_key_to_string (&pub);
- fprintf (stdout,
- "%s\n",
- str);
- GNUNET_free (str);
+ keyfile = GNUNET_DISK_file_open (args[0], GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_NONE);
+ if (NULL == keyfile)
+ return;
+ while (sizeof (pk) == GNUNET_DISK_file_read (keyfile, &pk, sizeof (pk)))
+ {
+ GNUNET_CRYPTO_eddsa_key_get_public (&pk, &pub);
+ str = GNUNET_CRYPTO_eddsa_public_key_to_string (&pub);
+ FPRINTF (stdout, "%s\n", str);
+ GNUNET_free (str);
+ }
+ GNUNET_DISK_file_close (keyfile);
}
- GNUNET_free (pk);
+
}
int
main (int argc, char *const *argv)
{
+ list_keys_count = UINT32_MAX;
static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+ { 'i', "iterate", "FILE",
+ gettext_noop ("list keys included in a file (for testing)"),
+ 0, &GNUNET_GETOPT_set_one, &list_keys },
+ { 'e', "end=", "COUNT",
+ gettext_noop ("number of keys to list included in a file (for testing)"),
+ 1, &GNUNET_GETOPT_set_uint, &list_keys_count },
{ 'g', "generate-keys", "COUNT",
gettext_noop ("create COUNT public-private key pairs (for testing)"),
1, &GNUNET_GETOPT_set_uint, &make_keys },
{ 'P', "print-peer-identity", NULL,
gettext_noop ("print the hash of the public key in ASCII format"),
0, &GNUNET_GETOPT_set_one, &print_peer_identity },
+ { 'E', "examples", NULL,
+ gettext_noop ("print examples of ECC operations (used for compatibility testing)"),
+ 0, &GNUNET_GETOPT_set_one, &print_examples_flag },
GNUNET_GETOPT_OPTION_END
};
int ret;
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