/*
This file is part of GNUnet
- (C) 2014 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2014 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
#include "gnunet_secretsharing_service.h"
#include "gnunet_testbed_service.h"
+/**
+ * How many peers should participate in the key generation?
+ */
static unsigned int num_peers = 3;
+/**
+ * What should the threshold for then key be?
+ */
static unsigned int threshold = 2;
+/**
+ * Should we try to decrypt a value after the key generation?
+ */
+static unsigned int decrypt = GNUNET_NO;
+
+/**
+ * When would we like to see the operation finished?
+ */
static struct GNUNET_TIME_Relative timeout;
+/**
+ * When should dkg communication start?
+ */
+static struct GNUNET_TIME_Relative delay;
+
+/**
+ * Handles for secretsharing sessions.
+ */
static struct GNUNET_SECRETSHARING_Session **session_handles;
-static struct GNUNET_TESTBED_Operation **testbed_operations;
+static struct GNUNET_SECRETSHARING_DecryptionHandle **decrypt_handles;
+
+/**
+ * Shares we got from the distributed key generation.
+ */
+static struct GNUNET_SECRETSHARING_Share **shares;
+
+static struct GNUNET_SECRETSHARING_PublicKey common_pubkey;
+
-static unsigned int num_connected_handles;
+static unsigned int num_connected_sessions;
+static unsigned int num_connected_decrypt;
+
+/**
+ * Handles to the running peers.
+ * When peers[i] is NULL, the i-th peer has stopped.
+ */
static struct GNUNET_TESTBED_Peer **peers;
static struct GNUNET_PeerIdentity *peer_ids;
static unsigned int num_retrieved_peer_ids;
+static unsigned int num_generated;
+
+static unsigned int num_decrypted;
+
static struct GNUNET_HashCode session_id;
static int verbose;
+static struct GNUNET_SECRETSHARING_Plaintext reference_plaintext;
+
+static struct GNUNET_SECRETSHARING_Ciphertext ciphertext;
+
+static struct GNUNET_TIME_Absolute dkg_start;
+
+static struct GNUNET_TIME_Absolute dkg_deadline;
+
+
+static struct GNUNET_TIME_Absolute decrypt_start;
+
+static struct GNUNET_TIME_Absolute decrypt_deadline;
+
+/**
+ * Connect operations, one for every peer.
+ */
+static struct GNUNET_TESTBED_Operation **connect_ops;
+
+/**
+ * Are we performing a shutdown right now?
+ */
+static int in_shutdown;
+
/**
* Signature of the event handler function called by the
* operation has executed successfully.
*/
static void
-connect_complete (void *cls,
- struct GNUNET_TESTBED_Operation *op,
- void *ca_result,
- const char *emsg)
+session_connect_complete (void *cls,
+ struct GNUNET_TESTBED_Operation *op,
+ void *ca_result,
+ const char *emsg)
{
if (NULL != emsg)
GNUNET_assert (0);
}
- num_connected_handles++;
+ num_connected_sessions++;
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- "connect complete\n");
+ "dkg: session connect complete\n");
- if (num_connected_handles == num_peers)
+ if (num_connected_sessions == num_peers)
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- "all peers connected\n");
+ "dkg: all peers connected\n");
+ }
+}
+
+
+/**
+ * Callback to be called when a service connect operation is completed
+ *
+ * @param cls the callback closure from functions generating an operation
+ * @param op the operation that has been finished
+ * @param ca_result the service handle returned from GNUNET_TESTBED_ConnectAdapter()
+ * @param emsg error message in case the operation has failed; will be NULL if
+ * operation has executed successfully.
+ */
+static void
+decrypt_connect_complete (void *cls,
+ struct GNUNET_TESTBED_Operation *op,
+ void *ca_result,
+ const char *emsg)
+{
+
+ if (NULL != emsg)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "testbed connect emsg: %s\n",
+ emsg);
+ GNUNET_assert (0);
+ }
+
+ num_connected_decrypt++;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "decrypt: session connect complete\n");
+
+ if (num_connected_decrypt == num_peers)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "decrypt: all peers connected\n");
+ }
+}
+
+
+/**
+ * Called when a decryption has succeeded.
+ *
+ * @param cls Plaintext
+ * @param plaintext Plaintext
+ */
+static void decrypt_cb (void *cls,
+ const struct GNUNET_SECRETSHARING_Plaintext *plaintext)
+{
+ struct GNUNET_SECRETSHARING_DecryptionHandle **dhp = cls;
+ unsigned int n = dhp - decrypt_handles;
+ num_decrypted++;
+
+ *dhp = NULL;
+
+ // we should still be connected if this is called
+ GNUNET_assert (NULL != connect_ops[n]);
+
+ GNUNET_TESTBED_operation_done (connect_ops[n]);
+
+ if (NULL == plaintext)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "decrypt failed for peer %u\n", n);
+ return;
+ }
+ else if (0 == memcmp (&reference_plaintext, plaintext, sizeof (struct GNUNET_SECRETSHARING_Plaintext)))
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "decrypt got correct result for peer %u\n", n);
+ else
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "decrypt got wrong result for peer %u\n", n);
+
+ if (num_decrypted == num_peers)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "every peer decrypted\n");
+ GNUNET_SCHEDULER_shutdown ();
}
+
+ *dhp = NULL;
+}
+
+
+
+/**
+ * Adapter function called to establish a connection to
+ * a service.
+ *
+ * @param cls closure
+ * @param cfg configuration of the peer to connect to; will be available until
+ * GNUNET_TESTBED_operation_done() is called on the operation returned
+ * from GNUNET_TESTBED_service_connect()
+ * @return service handle to return in 'op_result', NULL on error
+ */
+static void *
+decrypt_connect_adapter (void *cls,
+ const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ struct GNUNET_SECRETSHARING_DecryptionHandle **hp = cls;
+ unsigned int n = hp - decrypt_handles;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "decrypt connect adapter, %d peers\n",
+ num_peers);
+ *hp = GNUNET_SECRETSHARING_decrypt (cfg, shares[n], &ciphertext,
+ decrypt_start, decrypt_deadline,
+ decrypt_cb,
+ hp);
+
+ return *hp;
+}
+
+
+/**
+ * Adapter function called to destroy a connection to
+ * a service.
+ *
+ * @param cls closure
+ * @param op_result service handle returned from the connect adapter
+ */
+static void
+decrypt_disconnect_adapter(void *cls, void *op_result)
+{
+ struct GNUNET_SECRETSHARING_DecryptionHandle **dh = cls;
+ unsigned int n = dh - decrypt_handles;
+
+ GNUNET_assert (*dh == decrypt_handles[n]);
+
+ if (NULL != *dh)
+ {
+ GNUNET_SECRETSHARING_decrypt_cancel (*dh);
+ *dh = NULL;
+ }
+
+ GNUNET_assert (NULL != connect_ops[n]);
+ connect_ops[n] = NULL;
}
static void
secret_ready_cb (void *cls,
- const struct GNUNET_SECRETSHARING_Share *my_share,
- const struct GNUNET_SECRETSHARING_PublicKey *public_key,
+ struct GNUNET_SECRETSHARING_Share *my_share,
+ struct GNUNET_SECRETSHARING_PublicKey *public_key,
unsigned int num_ready_peers,
const struct GNUNET_PeerIdentity *ready_peers)
{
struct GNUNET_SECRETSHARING_Session **sp = cls;
unsigned int n = sp - session_handles;
- if (NULL == my_share || NULL == public_key)
+ char pubkey_str[1024];
+ char *ret;
+
+ num_generated++;
+ *sp = NULL;
+ shares[n] = my_share;
+ if (NULL == my_share)
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "key generation failed for peer #%u\n", n);
- return;
}
- GNUNET_log (GNUNET_ERROR_TYPE_INFO, "secret ready for peer #%u\n", n);
- // FIXME: end profiler or try decryption if all secrets are ready
+ else
+ {
+ ret = GNUNET_STRINGS_data_to_string (public_key, sizeof *public_key, pubkey_str, 1024);
+ GNUNET_assert (NULL != ret);
+ *ret = '\0';
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "key generation successful for peer #%u, pubkey %s\n", n,
+ pubkey_str);
+
+ /* we're the first to get the key -> store it */
+ if (num_generated == 1)
+ {
+ common_pubkey = *public_key;
+ }
+ else if (0 != memcmp (public_key, &common_pubkey, sizeof (struct GNUNET_SECRETSHARING_PublicKey)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "generated public keys do not match\n");
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+ }
+
+ // we should still be connected
+ GNUNET_assert (NULL != connect_ops[n]);
+
+ // disconnect from the service, will call the disconnect callback
+ GNUNET_TESTBED_operation_done (connect_ops[n]);
+
}
* @return service handle to return in 'op_result', NULL on error
*/
static void *
-connect_adapter (void *cls,
- const struct GNUNET_CONFIGURATION_Handle *cfg)
+session_connect_adapter (void *cls,
+ const struct GNUNET_CONFIGURATION_Handle *cfg)
{
struct GNUNET_SECRETSHARING_Session **sp = cls;
num_peers,
peer_ids,
&session_id,
- GNUNET_TIME_relative_to_absolute (timeout),
+ dkg_start,
+ dkg_deadline,
threshold,
&secret_ready_cb, sp);
return *sp;
}
+
/**
* Adapter function called to destroy a connection to
* a service.
* @param op_result service handle returned from the connect adapter
*/
static void
-disconnect_adapter(void *cls, void *op_result)
+session_disconnect_adapter (void *cls, void *op_result)
{
- /* FIXME: what to do here? */
+ struct GNUNET_SECRETSHARING_Session **sp = cls;
+ unsigned int n = (sp - session_handles);
+
+ GNUNET_assert (*sp == session_handles[n]);
+
+ if (NULL != *sp)
+ {
+ GNUNET_SECRETSHARING_session_destroy (*sp);
+ *sp = NULL;
+ }
+
+ GNUNET_assert (NULL != connect_ops[n]);
+ connect_ops[n] = NULL;
+
+ if (GNUNET_YES == in_shutdown)
+ return;
+
+ // all peers received their secret
+ if (num_generated == num_peers)
+ {
+ int i;
+
+ // only do decryption if requested by the user
+ if (GNUNET_NO == decrypt)
+ {
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+
+ decrypt_start = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
+ decrypt_deadline = GNUNET_TIME_absolute_add (decrypt_start, timeout);
+
+ // compute g^42 as the plaintext which we will decrypt and then
+ // cooperatively decrypt
+ GNUNET_SECRETSHARING_plaintext_generate_i (&reference_plaintext, 42);
+ GNUNET_SECRETSHARING_encrypt (&common_pubkey, &reference_plaintext, &ciphertext);
+
+ for (i = 0; i < num_peers; i++)
+ connect_ops[i] =
+ GNUNET_TESTBED_service_connect (NULL, peers[i], "secretsharing", &decrypt_connect_complete, NULL,
+ &decrypt_connect_adapter, &decrypt_disconnect_adapter, &decrypt_handles[i]);
+ }
}
num_retrieved_peer_ids++;
if (num_retrieved_peer_ids == num_peers)
for (i = 0; i < num_peers; i++)
- testbed_operations[i] =
- GNUNET_TESTBED_service_connect (NULL, peers[i], "secretsharing", connect_complete, NULL,
- connect_adapter, disconnect_adapter, &session_handles[i]);
+ connect_ops[i] =
+ GNUNET_TESTBED_service_connect (NULL, peers[i], "secretsharing", session_connect_complete, NULL,
+ session_connect_adapter, session_disconnect_adapter, &session_handles[i]);
}
else
{
}
+/**
+ * Signature of the main function of a task.
+ *
+ * @param cls closure
+ */
+static void
+handle_shutdown (void *cls)
+{
+ in_shutdown = GNUNET_YES;
+
+ if (NULL != connect_ops)
+ {
+ unsigned int i;
+ for (i = 0; i < num_peers; i++)
+ if (NULL != connect_ops[i])
+ {
+ // the disconnect callback will set the op to NULL
+ GNUNET_TESTBED_operation_done (connect_ops[i]);
+ }
+ GNUNET_free (connect_ops);
+ }
+
+ // killing the testbed operation will take care of remaining
+ // service handles in the disconnect callback
+}
+
+
/**
* Signature of a main function for a testcase.
*
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "test master\n");
+ GNUNET_SCHEDULER_add_shutdown (&handle_shutdown, NULL);
+
peers = started_peers;
peer_ids = GNUNET_malloc (num_peers * sizeof (struct GNUNET_PeerIdentity));
- session_handles = GNUNET_malloc (num_peers * sizeof (struct GNUNET_SECRETSHARING_Session *));
- testbed_operations = GNUNET_malloc (num_peers * sizeof (struct GNUNET_TESTBED_Operation *));
+ session_handles = GNUNET_new_array (num_peers, struct GNUNET_SECRETSHARING_Session *);
+ decrypt_handles = GNUNET_new_array (num_peers, struct GNUNET_SECRETSHARING_DecryptionHandle *);
+ connect_ops = GNUNET_new_array (num_peers, struct GNUNET_TESTBED_Operation *);
+ shares = GNUNET_new_array (num_peers, struct GNUNET_SECRETSHARING_Share *);
for (i = 0; i < num_peers; i++)
+ {
+ // we do not store the returned operation, as peer_info_cb
+ // will receive it as a parameter and call GNUNET_TESTBED_operation_done.
GNUNET_TESTBED_peer_get_information (peers[i],
GNUNET_TESTBED_PIT_IDENTITY,
peer_info_cb,
&peer_ids[i]);
+ }
}
char *topology;
int topology_cmp_result;
+ dkg_start = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
+ dkg_deadline = GNUNET_TIME_absolute_add (dkg_start, timeout);
+
if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg, "testbed", "OVERLAY_TOPOLOGY", &topology))
{
fprintf (stderr,
{ 'n', "num-peers", NULL,
gettext_noop ("number of peers in consensus"),
GNUNET_YES, &GNUNET_GETOPT_set_uint, &num_peers },
+ { 'D', "delay", NULL,
+ gettext_noop ("dkg start delay"),
+ GNUNET_YES, &GNUNET_GETOPT_set_relative_time, &delay },
{ 't', "timeout", NULL,
gettext_noop ("dkg timeout"),
GNUNET_YES, &GNUNET_GETOPT_set_relative_time, &timeout },
{ 'k', "threshold", NULL,
gettext_noop ("threshold"),
GNUNET_YES, &GNUNET_GETOPT_set_uint, &threshold },
+ { 'd', "decrypt", NULL,
+ gettext_noop ("also profile decryption"),
+ GNUNET_NO, &GNUNET_GETOPT_set_one, &decrypt },
{ 'V', "verbose", NULL,
gettext_noop ("be more verbose (print received values)"),
GNUNET_NO, &GNUNET_GETOPT_set_one, &verbose },
GNUNET_GETOPT_OPTION_END
};
- timeout = GNUNET_TIME_UNIT_SECONDS;
+ delay = GNUNET_TIME_UNIT_ZERO;
+ timeout = GNUNET_TIME_UNIT_MINUTES;
GNUNET_PROGRAM_run2 (argc, argv, "gnunet-secretsharing-profiler",
"help",
options, &run, NULL, GNUNET_YES);
return 0;
}
-
projects / oweals / gnunet.git / blobdiff