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require canonical multi output bulletproof layout

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moneromooo-monero 2018-03-31 10:49:53 +01:00
parent 7e67c52fa2
commit c444b1b229
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4 changed files with 42 additions and 13 deletions
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29
src/cryptonote_core/cryptonote_core.cpp
View file

@ -745,6 +745,25 @@ namespace cryptonote
bad_semantics_txes_lock.unlock();
}
//-----------------------------------------------------------------------------------------------
static bool is_canonical_bulletproof_layout(const std::vector<rct::Bulletproof> &proofs)
{
size_t n_amounts = rct::n_bulletproof_amounts(proofs), amounts_proved = 0;
size_t n = 0;
while (amounts_proved < n_amounts)
{
if (n >= proofs.size())
return false;
size_t batch_size = 1;
while (batch_size * 2 + amounts_proved <= n_amounts && batch_size * 2 <= BULLETPROOF_MAX_OUTPUTS)
batch_size *= 2;
if (rct::n_bulletproof_amounts(proofs[n]) != batch_size)
return false;
amounts_proved += batch_size;
++n;
}
return true;
}
//-----------------------------------------------------------------------------------------------
bool core::handle_incoming_tx_accumulated_batch(std::vector<tx_verification_batch_info> &tx_info, bool keeped_by_block)
{
bool ret = true;
@ -797,6 +816,16 @@ namespace cryptonote
}
break;
case rct::RCTTypeBulletproof:
// in addition to valid bulletproofs, we want multi-out
// proofs to be in decreasing power of 2 constituents
if (!is_canonical_bulletproof_layout(rv.p.bulletproofs))
{
MERROR_VER("Bulletproof does not use decreasing power of 2 rule");
set_semantics_failed(tx_info[n].tx_hash);
tx_info[n].tvc.m_verifivation_failed = true;
tx_info[n].result = false;
break;
}
rvv.push_back(&rv); // delayed batch verification
break;
default:

14
tests/core_tests/bulletproofs.cpp
View file

@ -215,14 +215,14 @@ bool gen_bp_tx_valid_1::generate(std::vector<test_event_entry>& events) const
return generate_with(events, out_idx, mixin, 1, amounts_paid, true, multi_out, NULL, [&](const cryptonote::transaction &tx, size_t tx_idx){ return check_bp(tx, tx_idx, bp_sizes, "gen_bp_tx_valid_1"); });
}
bool gen_bp_tx_valid_1_1::generate(std::vector<test_event_entry>& events) const
bool gen_bp_tx_invalid_1_1::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 6;
const int out_idx[] = {1, -1};
const uint64_t amounts_paid[] = {5000, 5000, (uint64_t)-1};
const size_t bp_sizes[] = {1, 1, (size_t)-1};
const bool multi_out[] = {false};
return generate_with(events, out_idx, mixin, 1, amounts_paid, true, multi_out, NULL, [&](const cryptonote::transaction &tx, size_t tx_idx){ return check_bp(tx, tx_idx, bp_sizes, "gen_bp_tx_valid_1_1"); });
return generate_with(events, out_idx, mixin, 1, amounts_paid, false, multi_out, NULL, [&](const cryptonote::transaction &tx, size_t tx_idx){ return check_bp(tx, tx_idx, bp_sizes, "gen_bp_tx_invalid_1_1"); });
}
bool gen_bp_tx_valid_2::generate(std::vector<test_event_entry>& events) const
@ -265,13 +265,13 @@ bool gen_bp_txs_valid_2_and_2::generate(std::vector<test_event_entry>& events) c
return generate_with(events, out_idx, mixin, 2, amounts_paid, true, multi_out, NULL, [&](const cryptonote::transaction &tx, size_t tx_idx){ return check_bp(tx, tx_idx, bp_sizes, "gen_bp_txs_valid_2_2"); });
}
bool gen_bp_txs_valid_1_1_and_8_2_and_16_16_1::generate(std::vector<test_event_entry>& events) const
bool gen_bp_txs_valid_2_and_8_2_and_16_16_1::generate(std::vector<test_event_entry>& events) const
{
const int mixin = 6;
const int out_idx[] = {1, -1};
const uint64_t amounts_paid[] = {1000, 1000, (uint64_t)-1, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, (uint64_t)-1, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, (uint64_t)-1};
const bool multi_out[] = {false, true, true};
const size_t bp_sizes[] = {1, 1, (size_t)-1, 8, 2, (size_t)-1, 16, 16, 1, (size_t)-1};
const bool multi_out[] = {true, true, true};
const size_t bp_sizes[] = {2, (size_t)-1, 8, 2, (size_t)-1, 16, 16, 1, (size_t)-1};
return generate_with(events, out_idx, mixin, 3, amounts_paid, true, multi_out, NULL, [&](const cryptonote::transaction &tx, size_t tx_idx){ return check_bp(tx, tx_idx, bp_sizes, "gen_bp_txs_valid_1_1_and_8_2_and_16_16_1"); });
}
@ -325,8 +325,8 @@ bool gen_bp_tx_invalid_switched::generate(std::vector<test_event_entry>& events)
DEFINE_TESTS_ERROR_CONTEXT("gen_bp_tx_invalid_switched");
const int mixin = 6;
const int out_idx[] = {1, -1};
const uint64_t amounts_paid[] = {5000, 5000, (uint64_t)-1};
const bool multi_out[] = {false};
const uint64_t amounts_paid[] = {1001, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, 1000, (uint64_t)-1};
const bool multi_out[] = {true};
return generate_with(events, out_idx, mixin, 1, amounts_paid, false, multi_out, NULL, [&](cryptonote::transaction &tx, size_t tx_idx){
CHECK_TEST_CONDITION(tx.rct_signatures.type == rct::RCTTypeBulletproof);
CHECK_TEST_CONDITION(tx.rct_signatures.p.bulletproofs.size() == 2);

8
tests/core_tests/bulletproofs.h
View file

@ -108,11 +108,11 @@ struct gen_bp_tx_valid_1 : public gen_bp_tx_validation_base
};
template<> struct get_test_options<gen_bp_tx_valid_1>: public get_test_options<gen_bp_tx_validation_base> {};
struct gen_bp_tx_valid_1_1 : public gen_bp_tx_validation_base
struct gen_bp_tx_invalid_1_1 : public gen_bp_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_bp_tx_valid_1_1>: public get_test_options<gen_bp_tx_validation_base> {};
template<> struct get_test_options<gen_bp_tx_invalid_1_1>: public get_test_options<gen_bp_tx_validation_base> {};
struct gen_bp_tx_valid_2 : public gen_bp_tx_validation_base
{
@ -138,11 +138,11 @@ struct gen_bp_txs_valid_2_and_2 : public gen_bp_tx_validation_base
};
template<> struct get_test_options<gen_bp_txs_valid_2_and_2>: public get_test_options<gen_bp_tx_validation_base> {};
struct gen_bp_txs_valid_1_1_and_8_2_and_16_16_1 : public gen_bp_tx_validation_base
struct gen_bp_txs_valid_2_and_8_2_and_16_16_1 : public gen_bp_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_bp_txs_valid_1_1_and_8_2_and_16_16_1>: public get_test_options<gen_bp_tx_validation_base> {};
template<> struct get_test_options<gen_bp_txs_valid_2_and_8_2_and_16_16_1>: public get_test_options<gen_bp_tx_validation_base> {};
struct gen_bp_tx_invalid_not_enough_proofs : public gen_bp_tx_validation_base
{

4
tests/core_tests/chaingen_main.cpp
View file

@ -225,12 +225,12 @@ int main(int argc, char* argv[])
GENERATE_AND_PLAY(gen_multisig_tx_invalid_33_1_3_no_threshold);
GENERATE_AND_PLAY(gen_bp_tx_valid_1);
GENERATE_AND_PLAY(gen_bp_tx_valid_1_1);
GENERATE_AND_PLAY(gen_bp_tx_invalid_1_1);
GENERATE_AND_PLAY(gen_bp_tx_valid_2);
GENERATE_AND_PLAY(gen_bp_tx_valid_4_2_1);
GENERATE_AND_PLAY(gen_bp_tx_valid_16_16);
GENERATE_AND_PLAY(gen_bp_txs_valid_2_and_2);
GENERATE_AND_PLAY(gen_bp_txs_valid_1_1_and_8_2_and_16_16_1);
GENERATE_AND_PLAY(gen_bp_txs_valid_2_and_8_2_and_16_16_1);
GENERATE_AND_PLAY(gen_bp_tx_invalid_not_enough_proofs);
GENERATE_AND_PLAY(gen_bp_tx_invalid_too_many_proofs);
GENERATE_AND_PLAY(gen_bp_tx_invalid_wrong_amount);