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author | Gian Demarmels <gian@demarmels.org> | 2022-01-03 14:38:59 +0100 |
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committer | Gian Demarmels <gian@demarmels.org> | 2022-02-04 15:33:11 +0100 |
commit | 18db69be2d2bbacc6b9f4de2e9e8f8db2df4febe (patch) | |
tree | c7630208dee223cdaef32097c2b9f66cc9b1bfa7 /src/util/test_helper_cs.c | |
parent | f239b01be196f5ce64fdd9f0a6f42a11077c33c6 (diff) | |
download | exchange-18db69be2d2bbacc6b9f4de2e9e8f8db2df4febe.tar.xz |
initial cs_secmod implementation
Diffstat (limited to 'src/util/test_helper_cs.c')
-rw-r--r-- | src/util/test_helper_cs.c | 692 |
1 files changed, 692 insertions, 0 deletions
diff --git a/src/util/test_helper_cs.c b/src/util/test_helper_cs.c new file mode 100644 index 000000000..bc2287ce4 --- /dev/null +++ b/src/util/test_helper_cs.c @@ -0,0 +1,692 @@ +/* + This file is part of TALER + (C) 2020, 2021 Taler Systems SA + + TALER is free software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + TALER is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along with + TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> +*/ +/** + * @file util/test_helper_cs.c + * @brief Tests for CS crypto helper + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler_util.h" + +/** + * Configuration has 1 minute duration and 5 minutes lookahead, but + * we do not get 'revocations' for expired keys. So this must be + * large enough to deal with key rotation during the runtime of + * the benchmark. + */ +#define MAX_KEYS 1024 + +/** + * How many random key revocations should we test? + */ +#define NUM_REVOKES 3 + +/** + * How many iterations of the successful signing test should we run? + */ +#define NUM_SIGN_TESTS 5 + +/** + * How many iterations of the successful signing test should we run + * during the benchmark phase? + */ +#define NUM_SIGN_PERFS 100 + +/** + * How many parallel clients should we use for the parallel + * benchmark? (> 500 may cause problems with the max open FD number limit). + */ +#define NUM_CORES 8 + +/** + * Number of keys currently in #keys. + */ +static unsigned int num_keys; + +/** + * Keys currently managed by the helper. + */ +struct KeyData +{ + /** + * Validity start point. + */ + struct GNUNET_TIME_Timestamp start_time; + + /** + * Key expires for signing at @e start_time plus this value. + */ + struct GNUNET_TIME_Relative validity_duration; + + /** + * Hash of the public key. + */ + struct TALER_CsPubHashP h_cs; + + /** + * Full public key. + */ + struct TALER_DenominationPublicKey denom_pub; + + /** + * Is this key currently valid? + */ + bool valid; + + /** + * Did the test driver revoke this key? + */ + bool revoked; +}; + +/** + * Array of all the keys we got from the helper. + */ +static struct KeyData keys[MAX_KEYS]; + + +/** + * Release memory occupied by #keys. + */ +static void +free_keys (void) +{ + for (unsigned int i = 0; i<MAX_KEYS; i++) + if (keys[i].valid) + { + TALER_denom_pub_free (&keys[i].denom_pub); + keys[i].valid = false; + GNUNET_assert (num_keys > 0); + num_keys--; + } +} + + +/** + * Function called with information about available keys for signing. Usually + * only called once per key upon connect. Also called again in case a key is + * being revoked, in that case with an @a end_time of zero. Stores the keys + * status in #keys. + * + * @param cls closure, NULL + * @param section_name name of the denomination type in the configuration; + * NULL if the key has been revoked or purged + * @param start_time when does the key become available for signing; + * zero if the key has been revoked or purged + * @param validity_duration how long does the key remain available for signing; + * zero if the key has been revoked or purged + * @param h_cs hash of the @a denom_pub that is available (or was purged) + * @param denom_pub the public key itself, NULL if the key was revoked or purged + * @param sm_pub public key of the security module, NULL if the key was revoked or purged + * @param sm_sig signature from the security module, NULL if the key was revoked or purged + * The signature was already verified against @a sm_pub. + */ +static void +key_cb (void *cls, + const char *section_name, + struct GNUNET_TIME_Timestamp start_time, + struct GNUNET_TIME_Relative validity_duration, + const struct TALER_CsPubHashP *h_cs, + const struct TALER_DenominationPublicKey *denom_pub, + const struct TALER_SecurityModulePublicKeyP *sm_pub, + const struct TALER_SecurityModuleSignatureP *sm_sig) +{ + (void) cls; + (void) sm_pub; + (void) sm_sig; + GNUNET_log (GNUNET_ERROR_TYPE_INFO, + "Key notification about key %s in `%s'\n", + GNUNET_h2s (&h_cs->hash), + section_name); + if (0 == validity_duration.rel_value_us) + { + bool found = false; + + GNUNET_break (NULL == denom_pub); + GNUNET_break (NULL == section_name); + for (unsigned int i = 0; i<MAX_KEYS; i++) + if (0 == GNUNET_memcmp (h_cs, + &keys[i].h_cs)) + { + keys[i].valid = false; + keys[i].revoked = false; + TALER_denom_pub_free (&keys[i].denom_pub); + GNUNET_assert (num_keys > 0); + num_keys--; + found = true; + break; + } + if (! found) + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Error: helper announced expiration of unknown key!\n"); + + return; + } + + GNUNET_break (NULL != denom_pub); + for (unsigned int i = 0; i<MAX_KEYS; i++) + if (! keys[i].valid) + { + keys[i].valid = true; + keys[i].h_cs = *h_cs; + keys[i].start_time = start_time; + keys[i].validity_duration = validity_duration; + TALER_denom_pub_deep_copy (&keys[i].denom_pub, + denom_pub); + num_keys++; + return; + } + /* too many keys! */ + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Error: received %d live keys from the service!\n", + MAX_KEYS + 1); +} + + +/** + * Test key revocation logic. + * + * @param dh handle to the helper + * @return 0 on success + */ +static int +test_revocation (struct TALER_CRYPTO_CsDenominationHelper *dh) +{ + struct timespec req = { + .tv_nsec = 250000000 + }; + + for (unsigned int i = 0; i<NUM_REVOKES; i++) + { + uint32_t off; + + off = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, + num_keys); + /* find index of key to revoke */ + for (unsigned int j = 0; j < MAX_KEYS; j++) + { + if (! keys[j].valid) + continue; + if (0 != off) + { + off--; + continue; + } + keys[j].revoked = true; + fprintf (stderr, + "Revoking key %s ...", + GNUNET_h2s (&keys[j].h_cs.hash)); + TALER_CRYPTO_helper_cs_revoke (dh, + &keys[j].h_cs); + for (unsigned int k = 0; k<1000; k++) + { + TALER_CRYPTO_helper_cs_poll (dh); + if (! keys[j].revoked) + break; + nanosleep (&req, NULL); + fprintf (stderr, "."); + } + if (keys[j].revoked) + { + fprintf (stderr, + "\nFAILED: timeout trying to revoke key %u\n", + j); + TALER_CRYPTO_helper_cs_disconnect (dh); + return 2; + } + fprintf (stderr, "\n"); + break; + } + } + return 0; +} + + +/** + * Test signing logic. + * + * @param dh handle to the helper + * @return 0 on success + */ +static int +test_signing (struct TALER_CRYPTO_CsDenominationHelper *dh) +{ + struct TALER_BlindedDenominationSignature ds; + enum TALER_ErrorCode ec; + bool success = false; + struct TALER_PlanchetSecretsP ps; + struct TALER_CoinPubHash c_hash; + + TALER_planchet_setup_random (&ps, TALER_DENOMINATION_RSA); + for (unsigned int i = 0; i<MAX_KEYS; i++) + { + if (! keys[i].valid) + continue; + { + struct TALER_PlanchetDetail pd; + pd.blinded_planchet.cipher = TALER_DENOMINATION_RSA; + // keys[i].denom_pub.cipher = TALER_DENOMINATION_CS; + + GNUNET_assert (GNUNET_YES == + TALER_planchet_prepare (&keys[i].denom_pub, + &ps, + &c_hash, + &pd)); + GNUNET_log (GNUNET_ERROR_TYPE_INFO, + "Requesting signature over %u bytes with key %s\n", + (unsigned + int) pd.blinded_planchet.details.rsa_blinded_planchet. + blinded_msg_size, + GNUNET_h2s (&keys[i].h_cs.hash)); + ds = TALER_CRYPTO_helper_cs_sign (dh, + &keys[i].h_cs, + pd.blinded_planchet.details. + rsa_blinded_planchet.blinded_msg, + pd.blinded_planchet.details. + rsa_blinded_planchet.blinded_msg_size, + &ec); + GNUNET_free ( + pd.blinded_planchet.details.rsa_blinded_planchet.blinded_msg); + } + switch (ec) + { + case TALER_EC_NONE: + if (GNUNET_TIME_relative_cmp (GNUNET_TIME_absolute_get_remaining ( + keys[i].start_time.abs_time), + >, + GNUNET_TIME_UNIT_SECONDS)) + { + /* key worked too early */ + GNUNET_break (0); + return 4; + } + if (GNUNET_TIME_relative_cmp (GNUNET_TIME_absolute_get_duration ( + keys[i].start_time.abs_time), + >, + keys[i].validity_duration)) + { + /* key worked too later */ + GNUNET_break (0); + return 5; + } + { + struct TALER_DenominationSignature rs; + + if (GNUNET_OK != + TALER_denom_sig_unblind (&rs, + &ds, + &ps.blinding_key, + &keys[i].denom_pub)) + { + GNUNET_break (0); + return 6; + } + TALER_blinded_denom_sig_free (&ds); + if (GNUNET_OK != + TALER_denom_pub_verify (&keys[i].denom_pub, + &rs, + &c_hash)) + { + /* signature invalid */ + GNUNET_break (0); + TALER_denom_sig_free (&rs); + return 7; + } + TALER_denom_sig_free (&rs); + } + GNUNET_log (GNUNET_ERROR_TYPE_INFO, + "Received valid signature for key %s\n", + GNUNET_h2s (&keys[i].h_cs.hash)); + success = true; + break; + case TALER_EC_EXCHANGE_DENOMINATION_HELPER_TOO_EARLY: + /* This 'failure' is expected, we're testing also for the + error handling! */ + if ( (GNUNET_TIME_relative_is_zero ( + GNUNET_TIME_absolute_get_remaining ( + keys[i].start_time.abs_time))) && + (GNUNET_TIME_relative_cmp ( + GNUNET_TIME_absolute_get_duration ( + keys[i].start_time.abs_time), + <, + keys[i].validity_duration)) ) + { + /* key should have worked! */ + GNUNET_break (0); + return 6; + } + break; + default: + /* unexpected error */ + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Unexpected error %d\n", + ec); + return 7; + } + } + if (! success) + { + /* no valid key for signing found, also bad */ + GNUNET_break (0); + return 16; + } + + /* check signing does not work if the key is unknown */ + { + struct TALER_CsPubHashP rnd; + + GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK, + &rnd, + sizeof (rnd)); + ds = TALER_CRYPTO_helper_cs_sign (dh, + &rnd, + "Hello", + strlen ("Hello"), + &ec); + if (TALER_EC_EXCHANGE_GENERIC_DENOMINATION_KEY_UNKNOWN != ec) + { + if (TALER_EC_NONE == ec) + TALER_blinded_denom_sig_free (&ds); + GNUNET_break (0); + return 17; + } + GNUNET_log (GNUNET_ERROR_TYPE_INFO, + "Signing with invalid key %s failed as desired\n", + GNUNET_h2s (&rnd.hash)); + } + return 0; +} + + +/** + * Benchmark signing logic. + * + * @param dh handle to the helper + * @return 0 on success + */ +static int +perf_signing (struct TALER_CRYPTO_CsDenominationHelper *dh, + const char *type) +{ + struct TALER_BlindedDenominationSignature ds; + enum TALER_ErrorCode ec; + struct GNUNET_TIME_Relative duration; + struct TALER_PlanchetSecretsP ps; + + TALER_planchet_setup_random (&ps, TALER_DENOMINATION_RSA); + duration = GNUNET_TIME_UNIT_ZERO; + TALER_CRYPTO_helper_cs_poll (dh); + for (unsigned int j = 0; j<NUM_SIGN_PERFS;) + { + for (unsigned int i = 0; i<MAX_KEYS; i++) + { + if (! keys[i].valid) + continue; + if (GNUNET_TIME_relative_cmp (GNUNET_TIME_absolute_get_remaining ( + keys[i].start_time.abs_time), + >, + GNUNET_TIME_UNIT_SECONDS)) + continue; + if (GNUNET_TIME_relative_cmp (GNUNET_TIME_absolute_get_duration ( + keys[i].start_time.abs_time), + >, + keys[i].validity_duration)) + continue; + { + struct TALER_CoinPubHash c_hash; + struct TALER_PlanchetDetail pd; + + GNUNET_assert (GNUNET_YES == + TALER_planchet_prepare (&keys[i].denom_pub, + &ps, + &c_hash, + &pd)); + /* use this key as long as it works */ + while (1) + { + struct GNUNET_TIME_Absolute start = GNUNET_TIME_absolute_get (); + struct GNUNET_TIME_Relative delay; + + ds = TALER_CRYPTO_helper_cs_sign (dh, + &keys[i].h_cs, + pd.blinded_planchet.details. + rsa_blinded_planchet.blinded_msg, + pd.blinded_planchet.details. + rsa_blinded_planchet. + blinded_msg_size, + &ec); + if (TALER_EC_NONE != ec) + break; + delay = GNUNET_TIME_absolute_get_duration (start); + duration = GNUNET_TIME_relative_add (duration, + delay); + TALER_blinded_denom_sig_free (&ds); + j++; + if (NUM_SIGN_PERFS <= j) + break; + } + GNUNET_free ( + pd.blinded_planchet.details.rsa_blinded_planchet.blinded_msg); + } + } /* for i */ + } /* for j */ + fprintf (stderr, + "%u (%s) signature operations took %s\n", + (unsigned int) NUM_SIGN_PERFS, + type, + GNUNET_STRINGS_relative_time_to_string (duration, + GNUNET_YES)); + return 0; +} + + +/** + * Parallel signing logic. + * + * @param esh handle to the helper + * @return 0 on success + */ +static int +par_signing (struct GNUNET_CONFIGURATION_Handle *cfg) +{ + struct GNUNET_TIME_Absolute start; + struct GNUNET_TIME_Relative duration; + pid_t pids[NUM_CORES]; + struct TALER_CRYPTO_CsDenominationHelper *dh; + + start = GNUNET_TIME_absolute_get (); + for (unsigned int i = 0; i<NUM_CORES; i++) + { + pids[i] = fork (); + num_keys = 0; + GNUNET_assert (-1 != pids[i]); + if (0 == pids[i]) + { + int ret; + + dh = TALER_CRYPTO_helper_cs_connect (cfg, + &key_cb, + NULL); + GNUNET_assert (NULL != dh); + ret = perf_signing (dh, + "parallel"); + TALER_CRYPTO_helper_cs_disconnect (dh); + free_keys (); + exit (ret); + } + } + for (unsigned int i = 0; i<NUM_CORES; i++) + { + int wstatus; + + GNUNET_assert (pids[i] == + waitpid (pids[i], + &wstatus, + 0)); + } + duration = GNUNET_TIME_absolute_get_duration (start); + fprintf (stderr, + "%u (parallel) signature operations took %s (total real time)\n", + (unsigned int) NUM_SIGN_PERFS * NUM_CORES, + GNUNET_STRINGS_relative_time_to_string (duration, + GNUNET_YES)); + return 0; +} + + +/** + * Main entry point into the test logic with the helper already running. + */ +static int +run_test (void) +{ + struct GNUNET_CONFIGURATION_Handle *cfg; + struct TALER_CRYPTO_CsDenominationHelper *dh; + struct timespec req = { + .tv_nsec = 250000000 + }; + int ret; + + cfg = GNUNET_CONFIGURATION_create (); + if (GNUNET_OK != + GNUNET_CONFIGURATION_load (cfg, + "test_helper_cs.conf")) + { + GNUNET_break (0); + return 77; + } + + fprintf (stderr, "Waiting for helper to start ... "); + for (unsigned int i = 0; i<100; i++) + { + nanosleep (&req, + NULL); + dh = TALER_CRYPTO_helper_cs_connect (cfg, + &key_cb, + NULL); + if (NULL != dh) + break; + fprintf (stderr, "."); + } + if (NULL == dh) + { + fprintf (stderr, + "\nFAILED: timeout trying to connect to helper\n"); + GNUNET_CONFIGURATION_destroy (cfg); + return 1; + } + if (0 == num_keys) + { + fprintf (stderr, + "\nFAILED: timeout trying to connect to helper\n"); + TALER_CRYPTO_helper_cs_disconnect (dh); + GNUNET_CONFIGURATION_destroy (cfg); + return 1; + } + fprintf (stderr, + " Done (%u keys)\n", + num_keys); + ret = 0; + if (0 == ret) + ret = test_revocation (dh); + if (0 == ret) + ret = test_signing (dh); + if (0 == ret) + ret = perf_signing (dh, + "sequential"); + TALER_CRYPTO_helper_cs_disconnect (dh); + free_keys (); + if (0 == ret) + ret = par_signing (cfg); + /* clean up our state */ + GNUNET_CONFIGURATION_destroy (cfg); + return ret; +} + + +int +main (int argc, + const char *const argv[]) +{ + struct GNUNET_OS_Process *helper; + char *libexec_dir; + char *binary_name; + int ret; + enum GNUNET_OS_ProcessStatusType type; + unsigned long code; + + (void) argc; + (void) argv; + unsetenv ("XDG_DATA_HOME"); + unsetenv ("XDG_CONFIG_HOME"); + GNUNET_log_setup ("test-helper-cs", + "WARNING", + NULL); + GNUNET_OS_init (TALER_project_data_default ()); + libexec_dir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_BINDIR); + GNUNET_asprintf (&binary_name, + "%s/%s", + libexec_dir, + "taler-exchange-secmod-cs"); + GNUNET_free (libexec_dir); + helper = GNUNET_OS_start_process (GNUNET_OS_INHERIT_STD_ERR, + NULL, NULL, NULL, + binary_name, + binary_name, + "-c", + "test_helper_cs.conf", + "-L", + "WARNING", + NULL); + if (NULL == helper) + { + GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, + "exec", + binary_name); + GNUNET_free (binary_name); + return 77; + } + GNUNET_free (binary_name); + ret = run_test (); + + GNUNET_OS_process_kill (helper, + SIGTERM); + if (GNUNET_OK != + GNUNET_OS_process_wait_status (helper, + &type, + &code)) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Helper process did not die voluntarily, killing hard\n"); + GNUNET_OS_process_kill (helper, + SIGKILL); + ret = 4; + } + else if ( (GNUNET_OS_PROCESS_EXITED != type) || + (0 != code) ) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Helper died with unexpected status %d/%d\n", + (int) type, + (int) code); + ret = 5; + } + GNUNET_OS_process_destroy (helper); + return ret; +} + + +/* end of test_helper_cs.c */ |