diff options
Diffstat (limited to 'src/util/test_helper_rsa.c')
| -rw-r--r-- | src/util/test_helper_rsa.c | 250 |
1 files changed, 248 insertions, 2 deletions
diff --git a/src/util/test_helper_rsa.c b/src/util/test_helper_rsa.c index 3f3eafddb..1b67607ce 100644 --- a/src/util/test_helper_rsa.c +++ b/src/util/test_helper_rsa.c @@ -1,6 +1,6 @@ /* This file is part of TALER - (C) 2020, 2021 Taler Systems SA + (C) 2020, 2021, 2022 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 @@ -441,6 +441,223 @@ test_signing (struct TALER_CRYPTO_RsaDenominationHelper *dh) /** + * Test batch signing logic. + * + * @param dh handle to the helper + * @param batch_size how large should the batch be + * @param check_sigs also check unknown key and signatures + * @return 0 on success + */ +static int +test_batch_signing (struct TALER_CRYPTO_RsaDenominationHelper *dh, + unsigned int batch_size, + bool check_sigs) +{ + struct TALER_BlindedDenominationSignature ds[batch_size]; + enum TALER_ErrorCode ec; + bool success = false; + struct TALER_PlanchetMasterSecretP ps[batch_size]; + struct TALER_ExchangeWithdrawValues alg_values[batch_size]; + struct TALER_AgeCommitmentHash ach[batch_size]; + struct TALER_CoinPubHashP c_hash[batch_size]; + struct TALER_CoinSpendPrivateKeyP coin_priv[batch_size]; + union TALER_DenominationBlindingKeyP bks[batch_size]; + + GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_STRONG, + &ps, + sizeof (ps)); + GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK, + &ach, + sizeof(ach)); + for (unsigned int i = 0; i<batch_size; i++) + { + alg_values[i].cipher = TALER_DENOMINATION_RSA; + TALER_planchet_setup_coin_priv (&ps[i], + &alg_values[i], + &coin_priv[i]); + TALER_planchet_blinding_secret_create (&ps[i], + &alg_values[i], + &bks[i]); + } + for (unsigned int k = 0; k<MAX_KEYS; k++) + { + if (success && ! check_sigs) + break; /* only do one round */ + if (! keys[k].valid) + continue; + if (TALER_DENOMINATION_RSA != keys[k].denom_pub.cipher) + continue; + { + struct TALER_PlanchetDetail pd[batch_size]; + struct TALER_CRYPTO_RsaSignRequest rsr[batch_size]; + + for (unsigned int i = 0; i<batch_size; i++) + { + pd[i].blinded_planchet.cipher = TALER_DENOMINATION_RSA; + GNUNET_assert (GNUNET_YES == + TALER_planchet_prepare (&keys[k].denom_pub, + &alg_values[i], + &bks[i], + &coin_priv[i], + &ach[i], + &c_hash[i], + &pd[i])); + rsr[i].h_rsa + = &keys[k].h_rsa; + rsr[i].msg + = pd[i].blinded_planchet.details.rsa_blinded_planchet.blinded_msg; + rsr[i].msg_size + = pd[i].blinded_planchet.details.rsa_blinded_planchet.blinded_msg_size; + } + ec = TALER_CRYPTO_helper_rsa_batch_sign (dh, + rsr, + batch_size, + ds); + for (unsigned int i = 0; i<batch_size; i++) + { + if (TALER_EC_NONE == ec) + GNUNET_break (TALER_DENOMINATION_RSA == + ds[i].cipher); + TALER_blinded_planchet_free (&pd[i].blinded_planchet); + } + } + switch (ec) + { + case TALER_EC_NONE: + if (GNUNET_TIME_relative_cmp (GNUNET_TIME_absolute_get_remaining ( + keys[k].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[k].start_time.abs_time), + >, + keys[k].validity_duration)) + { + /* key worked too later */ + GNUNET_break (0); + return 5; + } + for (unsigned int i = 0; i<batch_size; i++) + { + struct TALER_DenominationSignature rs; + + if (check_sigs) + { + if (GNUNET_OK != + TALER_denom_sig_unblind (&rs, + &ds[i], + &bks[i], + &c_hash[i], + &alg_values[i], + &keys[k].denom_pub)) + { + GNUNET_break (0); + return 6; + } + } + TALER_blinded_denom_sig_free (&ds[i]); + if (check_sigs) + { + if (GNUNET_OK != + TALER_denom_pub_verify (&keys[k].denom_pub, + &rs, + &c_hash[i])) + { + /* 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[k].h_rsa.hash)); + success = true; + break; + case TALER_EC_EXCHANGE_DENOMINATION_HELPER_TOO_EARLY: + /* This 'failure' is expected, we're testing also for the + error handling! */ + for (unsigned int i = 0; i<batch_size; i++) + TALER_blinded_denom_sig_free (&ds[i]); + if ( (GNUNET_TIME_relative_is_zero ( + GNUNET_TIME_absolute_get_remaining ( + keys[k].start_time.abs_time))) && + (GNUNET_TIME_relative_cmp ( + GNUNET_TIME_absolute_get_duration ( + keys[k].start_time.abs_time), + <, + keys[k].validity_duration)) ) + { + /* key should have worked! */ + GNUNET_break (0); + return 6; + } + break; + case TALER_EC_EXCHANGE_GENERIC_DENOMINATION_KEY_UNKNOWN: + for (unsigned int i = 0; i<batch_size; i++) + TALER_blinded_denom_sig_free (&ds[i]); + default: + /* unexpected error */ + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Unexpected error %d at %s:%u\n", + ec, + __FILE__, + __LINE__); + for (unsigned int i = 0; i<batch_size; i++) + TALER_blinded_denom_sig_free (&ds[i]); + 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 */ + if (check_sigs) + { + struct TALER_RsaPubHashP rnd; + struct TALER_CRYPTO_RsaSignRequest rsr = { + .h_rsa = &rnd, + .msg = "Hello", + .msg_size = strlen ("Hello") + }; + + GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK, + &rnd, + sizeof (rnd)); + ec = TALER_CRYPTO_helper_rsa_batch_sign (dh, + &rsr, + 1, + ds); + if (TALER_EC_EXCHANGE_GENERIC_DENOMINATION_KEY_UNKNOWN != ec) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Signing with invalid key returned unexpected status %d\n", + 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 @@ -614,7 +831,8 @@ run_test (void) return 77; } - fprintf (stderr, "Waiting for helper to start ... "); + fprintf (stderr, + "Waiting for helper to start ... "); for (unsigned int i = 0; i<100; i++) { nanosleep (&req, @@ -650,6 +868,34 @@ run_test (void) if (0 == ret) ret = test_signing (dh); if (0 == ret) + ret = test_batch_signing (dh, + 2, + true); + if (0 == ret) + ret = test_batch_signing (dh, + 256, + true); + for (unsigned int i = 0; i<5; i++) + { + static unsigned int batches[] = { 1, 4, 16, 64, 256 }; + unsigned int batch_size = batches[i]; + struct GNUNET_TIME_Absolute start; + struct GNUNET_TIME_Relative duration; + + start = GNUNET_TIME_absolute_get (); + if (0 != ret) + break; + ret = test_batch_signing (dh, + batch_size, + false); + duration = GNUNET_TIME_absolute_get_duration (start); + fprintf (stderr, + "%4u (batch) signature operations took %s (total real time)\n", + (unsigned int) batch_size, + GNUNET_STRINGS_relative_time_to_string (duration, + GNUNET_YES)); + } + if (0 == ret) ret = perf_signing (dh, "sequential"); TALER_CRYPTO_helper_rsa_disconnect (dh); |