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authorluigi1111 <luigi1111w@gmail.com>2022-04-05 23:56:09 -0400
committerluigi1111 <luigi1111w@gmail.com>2022-04-05 23:56:09 -0400
commitd054def63f9b8950fe20b2d8e841f5a9ae09418f (patch)
treeeae611a614dd11fb7e2a1e63bae3e9b31cbfa267 /src
parentMerge pull request #7153 (diff)
parentbulletproofs+: some minor cleanup from vtnerd's review (diff)
downloadmonero-d054def63f9b8950fe20b2d8e841f5a9ae09418f.tar.xz
Merge pull request #7170
bd27deb Bulletproofs+ (SarangNoether) b7713cc Precompute initial transcript hash (SarangNoether) b535d66 Updates from security audit (SarangNoether) a0d80b1 plug bulletproofs plus into consensus (moneromooo-monero) 75bd004 ringct: a few minor optimizations from review (moneromooo-monero) a345060 ringct: port some of vtnerd's review changes from BP+ to BP (moneromooo-monero) 4c94cfe store outPk/8 in the tx for speed (moneromooo-monero) 5acdd0e bulletproofs+: some minor cleanup from vtnerd's review (moneromooo-monero)
Diffstat (limited to '')
-rw-r--r--src/blockchain_db/blockchain_db.cpp9
-rw-r--r--src/cryptonote_basic/cryptonote_boost_serialization.h32
-rw-r--r--src/cryptonote_basic/cryptonote_format_utils.cpp47
-rw-r--r--src/cryptonote_config.h4
-rw-r--r--src/cryptonote_core/blockchain.cpp35
-rw-r--r--src/cryptonote_core/cryptonote_core.cpp23
-rw-r--r--src/hardforks/hardforks.cpp3
-rw-r--r--src/ringct/CMakeLists.txt6
-rw-r--r--src/ringct/bulletproofs.cc24
-rw-r--r--src/ringct/bulletproofs_plus.cc1121
-rw-r--r--src/ringct/bulletproofs_plus.h49
-rw-r--r--src/ringct/rctSigs.cpp219
-rw-r--r--src/ringct/rctTypes.cpp87
-rw-r--r--src/ringct/rctTypes.h80
-rw-r--r--src/serialization/json_object.cpp42
-rw-r--r--src/serialization/json_object.h3
-rw-r--r--src/wallet/api/wallet.cpp1
-rw-r--r--src/wallet/wallet2.cpp89
-rw-r--r--src/wallet/wallet2.h2
19 files changed, 1734 insertions, 142 deletions
diff --git a/src/blockchain_db/blockchain_db.cpp b/src/blockchain_db/blockchain_db.cpp
index a84a4148d..8e68abbe5 100644
--- a/src/blockchain_db/blockchain_db.cpp
+++ b/src/blockchain_db/blockchain_db.cpp
@@ -241,8 +241,15 @@ void BlockchainDB::add_transaction(const crypto::hash& blk_hash, const std::pair
}
else
{
+ rct::key commitment;
+ if (tx.version > 1)
+ {
+ commitment = tx.rct_signatures.outPk[i].mask;
+ if (rct::is_rct_bulletproof_plus(tx.rct_signatures.type))
+ commitment = rct::scalarmult8(commitment);
+ }
amount_output_indices[i] = add_output(tx_hash, tx.vout[i], i, tx.unlock_time,
- tx.version > 1 ? &tx.rct_signatures.outPk[i].mask : NULL);
+ tx.version > 1 ? &commitment : NULL);
}
}
add_tx_amount_output_indices(tx_id, amount_output_indices);
diff --git a/src/cryptonote_basic/cryptonote_boost_serialization.h b/src/cryptonote_basic/cryptonote_boost_serialization.h
index c6b81b094..24d452083 100644
--- a/src/cryptonote_basic/cryptonote_boost_serialization.h
+++ b/src/cryptonote_basic/cryptonote_boost_serialization.h
@@ -228,6 +228,20 @@ namespace boost
}
template <class Archive>
+ inline void serialize(Archive &a, rct::BulletproofPlus &x, const boost::serialization::version_type ver)
+ {
+ a & x.V;
+ a & x.A;
+ a & x.A1;
+ a & x.B;
+ a & x.r1;
+ a & x.s1;
+ a & x.d1;
+ a & x.L;
+ a & x.R;
+ }
+
+ template <class Archive>
inline void serialize(Archive &a, rct::boroSig &x, const boost::serialization::version_type ver)
{
a & x.s0;
@@ -305,7 +319,7 @@ namespace boost
a & x.type;
if (x.type == rct::RCTTypeNull)
return;
- if (x.type != rct::RCTTypeFull && x.type != rct::RCTTypeSimple && x.type != rct::RCTTypeBulletproof && x.type != rct::RCTTypeBulletproof2 && x.type != rct::RCTTypeCLSAG)
+ if (x.type != rct::RCTTypeFull && x.type != rct::RCTTypeSimple && x.type != rct::RCTTypeBulletproof && x.type != rct::RCTTypeBulletproof2 && x.type != rct::RCTTypeCLSAG && x.type != rct::RCTTypeBulletproofPlus)
throw boost::archive::archive_exception(boost::archive::archive_exception::other_exception, "Unsupported rct type");
// a & x.message; message is not serialized, as it can be reconstructed from the tx data
// a & x.mixRing; mixRing is not serialized, as it can be reconstructed from the offsets
@@ -321,7 +335,11 @@ namespace boost
{
a & x.rangeSigs;
if (x.rangeSigs.empty())
+ {
a & x.bulletproofs;
+ if (ver >= 2u)
+ a & x.bulletproofs_plus;
+ }
a & x.MGs;
if (ver >= 1u)
a & x.CLSAGs;
@@ -335,7 +353,7 @@ namespace boost
a & x.type;
if (x.type == rct::RCTTypeNull)
return;
- if (x.type != rct::RCTTypeFull && x.type != rct::RCTTypeSimple && x.type != rct::RCTTypeBulletproof && x.type != rct::RCTTypeBulletproof2 && x.type != rct::RCTTypeCLSAG)
+ if (x.type != rct::RCTTypeFull && x.type != rct::RCTTypeSimple && x.type != rct::RCTTypeBulletproof && x.type != rct::RCTTypeBulletproof2 && x.type != rct::RCTTypeCLSAG && x.type != rct::RCTTypeBulletproofPlus)
throw boost::archive::archive_exception(boost::archive::archive_exception::other_exception, "Unsupported rct type");
// a & x.message; message is not serialized, as it can be reconstructed from the tx data
// a & x.mixRing; mixRing is not serialized, as it can be reconstructed from the offsets
@@ -347,11 +365,15 @@ namespace boost
//--------------
a & x.p.rangeSigs;
if (x.p.rangeSigs.empty())
+ {
a & x.p.bulletproofs;
+ if (ver >= 2u)
+ a & x.p.bulletproofs_plus;
+ }
a & x.p.MGs;
if (ver >= 1u)
a & x.p.CLSAGs;
- if (x.type == rct::RCTTypeBulletproof || x.type == rct::RCTTypeBulletproof2 || x.type == rct::RCTTypeCLSAG)
+ if (x.type == rct::RCTTypeBulletproof || x.type == rct::RCTTypeBulletproof2 || x.type == rct::RCTTypeCLSAG || x.type == rct::RCTTypeBulletproofPlus)
a & x.p.pseudoOuts;
}
@@ -392,6 +414,6 @@ namespace boost
}
}
-BOOST_CLASS_VERSION(rct::rctSigPrunable, 1)
-BOOST_CLASS_VERSION(rct::rctSig, 1)
+BOOST_CLASS_VERSION(rct::rctSigPrunable, 2)
+BOOST_CLASS_VERSION(rct::rctSig, 2)
BOOST_CLASS_VERSION(rct::multisig_out, 1)
diff --git a/src/cryptonote_basic/cryptonote_format_utils.cpp b/src/cryptonote_basic/cryptonote_format_utils.cpp
index 835f59d69..cedc6f546 100644
--- a/src/cryptonote_basic/cryptonote_format_utils.cpp
+++ b/src/cryptonote_basic/cryptonote_format_utils.cpp
@@ -105,7 +105,9 @@ namespace cryptonote
uint64_t get_transaction_weight_clawback(const transaction &tx, size_t n_padded_outputs)
{
- const uint64_t bp_base = 368;
+ const rct::rctSig &rv = tx.rct_signatures;
+ const bool plus = rv.type == rct::RCTTypeBulletproofPlus;
+ const uint64_t bp_base = (32 * ((plus ? 6 : 9) + 7 * 2)) / 2; // notional size of a 2 output proof, normalized to 1 proof (ie, divided by 2)
const size_t n_outputs = tx.vout.size();
if (n_padded_outputs <= 2)
return 0;
@@ -113,7 +115,7 @@ namespace cryptonote
while ((1u << nlr) < n_padded_outputs)
++nlr;
nlr += 6;
- const size_t bp_size = 32 * (9 + 2 * nlr);
+ const size_t bp_size = 32 * ((plus ? 6 : 9) + 2 * nlr);
CHECK_AND_ASSERT_THROW_MES_L1(n_outputs <= BULLETPROOF_MAX_OUTPUTS, "maximum number of outputs is " + std::to_string(BULLETPROOF_MAX_OUTPUTS) + " per transaction");
CHECK_AND_ASSERT_THROW_MES_L1(bp_base * n_padded_outputs >= bp_size, "Invalid bulletproof clawback: bp_base " + std::to_string(bp_base) + ", n_padded_outputs "
+ std::to_string(n_padded_outputs) + ", bp_size " + std::to_string(bp_size));
@@ -164,7 +166,32 @@ namespace cryptonote
if (!base_only)
{
const bool bulletproof = rct::is_rct_bulletproof(rv.type);
- if (bulletproof)
+ const bool bulletproof_plus = rct::is_rct_bulletproof_plus(rv.type);
+ if (bulletproof_plus)
+ {
+ if (rv.p.bulletproofs_plus.size() != 1)
+ {
+ LOG_PRINT_L1("Failed to parse transaction from blob, bad bulletproofs_plus size in tx " << get_transaction_hash(tx));
+ return false;
+ }
+ if (rv.p.bulletproofs_plus[0].L.size() < 6)
+ {
+ LOG_PRINT_L1("Failed to parse transaction from blob, bad bulletproofs_plus L size in tx " << get_transaction_hash(tx));
+ return false;
+ }
+ const size_t max_outputs = rct::n_bulletproof_plus_max_amounts(rv.p.bulletproofs_plus[0]);
+ if (max_outputs < tx.vout.size())
+ {
+ LOG_PRINT_L1("Failed to parse transaction from blob, bad bulletproofs_plus max outputs in tx " << get_transaction_hash(tx));
+ return false;
+ }
+ const size_t n_amounts = tx.vout.size();
+ CHECK_AND_ASSERT_MES(n_amounts == rv.outPk.size(), false, "Internal error filling out V");
+ rv.p.bulletproofs_plus[0].V.resize(n_amounts);
+ for (size_t i = 0; i < n_amounts; ++i)
+ rv.p.bulletproofs_plus[0].V[i] = rv.outPk[i].mask;
+ }
+ else if (bulletproof)
{
if (rv.p.bulletproofs.size() != 1)
{
@@ -419,9 +446,11 @@ namespace cryptonote
if (tx.version < 2)
return blob_size;
const rct::rctSig &rv = tx.rct_signatures;
- if (!rct::is_rct_bulletproof(rv.type))
+ const bool bulletproof = rct::is_rct_bulletproof(rv.type);
+ const bool bulletproof_plus = rct::is_rct_bulletproof_plus(rv.type);
+ if (!bulletproof && !bulletproof_plus)
return blob_size;
- const size_t n_padded_outputs = rct::n_bulletproof_max_amounts(rv.p.bulletproofs);
+ const size_t n_padded_outputs = bulletproof_plus ? rct::n_bulletproof_plus_max_amounts(rv.p.bulletproofs_plus) : rct::n_bulletproof_max_amounts(rv.p.bulletproofs);
uint64_t bp_clawback = get_transaction_weight_clawback(tx, n_padded_outputs);
CHECK_AND_ASSERT_THROW_MES_L1(bp_clawback <= std::numeric_limits<uint64_t>::max() - blob_size, "Weight overflow");
return blob_size + bp_clawback;
@@ -431,8 +460,8 @@ namespace cryptonote
{
CHECK_AND_ASSERT_MES(tx.pruned, std::numeric_limits<uint64_t>::max(), "get_pruned_transaction_weight does not support non pruned txes");
CHECK_AND_ASSERT_MES(tx.version >= 2, std::numeric_limits<uint64_t>::max(), "get_pruned_transaction_weight does not support v1 txes");
- CHECK_AND_ASSERT_MES(tx.rct_signatures.type >= rct::RCTTypeBulletproof2 || tx.rct_signatures.type == rct::RCTTypeCLSAG,
- std::numeric_limits<uint64_t>::max(), "get_pruned_transaction_weight does not support older range proof types");
+ CHECK_AND_ASSERT_MES(tx.rct_signatures.type == rct::RCTTypeBulletproof2 || tx.rct_signatures.type == rct::RCTTypeCLSAG || tx.rct_signatures.type == rct::RCTTypeBulletproofPlus,
+ std::numeric_limits<uint64_t>::max(), "Unsupported rct_signatures type in get_pruned_transaction_weight");
CHECK_AND_ASSERT_MES(!tx.vin.empty(), std::numeric_limits<uint64_t>::max(), "empty vin");
CHECK_AND_ASSERT_MES(tx.vin[0].type() == typeid(cryptonote::txin_to_key), std::numeric_limits<uint64_t>::max(), "empty vin");
@@ -450,12 +479,12 @@ namespace cryptonote
while ((n_padded_outputs = (1u << nrl)) < tx.vout.size())
++nrl;
nrl += 6;
- extra = 32 * (9 + 2 * nrl) + 2;
+ extra = 32 * ((rct::is_rct_bulletproof_plus(tx.rct_signatures.type) ? 6 : 9) + 2 * nrl) + 2;
weight += extra;
// calculate deterministic CLSAG/MLSAG data size
const size_t ring_size = boost::get<cryptonote::txin_to_key>(tx.vin[0]).key_offsets.size();
- if (tx.rct_signatures.type == rct::RCTTypeCLSAG)
+ if (rct::is_rct_clsag(tx.rct_signatures.type))
extra = tx.vin.size() * (ring_size + 2) * 32;
else
extra = tx.vin.size() * (ring_size * (1 + 1) * 32 + 32 /* cc */);
diff --git a/src/cryptonote_config.h b/src/cryptonote_config.h
index b738960a3..ff61fc036 100644
--- a/src/cryptonote_config.h
+++ b/src/cryptonote_config.h
@@ -182,6 +182,7 @@
#define HF_VERSION_EXACT_COINBASE 13
#define HF_VERSION_CLSAG 13
#define HF_VERSION_DETERMINISTIC_UNLOCK_TIME 13
+#define HF_VERSION_BULLETPROOF_PLUS 15
#define PER_KB_FEE_QUANTIZATION_DECIMALS 8
@@ -190,6 +191,7 @@
#define DEFAULT_TXPOOL_MAX_WEIGHT 648000000ull // 3 days at 300000, in bytes
#define BULLETPROOF_MAX_OUTPUTS 16
+#define BULLETPROOF_PLUS_MAX_OUTPUTS 16
#define CRYPTONOTE_PRUNING_STRIPE_SIZE 4096 // the smaller, the smoother the increase
#define CRYPTONOTE_PRUNING_LOG_STRIPES 3 // the higher, the more space saved
@@ -221,6 +223,8 @@ namespace config
// Hash domain separators
const char HASH_KEY_BULLETPROOF_EXPONENT[] = "bulletproof";
+ const char HASH_KEY_BULLETPROOF_PLUS_EXPONENT[] = "bulletproof_plus";
+ const char HASH_KEY_BULLETPROOF_PLUS_TRANSCRIPT[] = "bulletproof_plus_transcript";
const char HASH_KEY_RINGDB[] = "ringdsb";
const char HASH_KEY_SUBADDRESS[] = "SubAddr";
const unsigned char HASH_KEY_ENCRYPTED_PAYMENT_ID = 0x8d;
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index 34031fb7c..cd9972d1e 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -3143,6 +3143,32 @@ bool Blockchain::check_tx_outputs(const transaction& tx, tx_verification_context
}
}
+ // from v15, allow bulletproofs plus
+ if (hf_version < HF_VERSION_BULLETPROOF_PLUS) {
+ if (tx.version >= 2) {
+ const bool bulletproof_plus = rct::is_rct_bulletproof_plus(tx.rct_signatures.type);
+ if (bulletproof_plus || !tx.rct_signatures.p.bulletproofs_plus.empty())
+ {
+ MERROR_VER("Bulletproofs plus are not allowed before v" << std::to_string(HF_VERSION_BULLETPROOF_PLUS));
+ tvc.m_invalid_output = true;
+ return false;
+ }
+ }
+ }
+
+ // from v16, forbid bulletproofs
+ if (hf_version > HF_VERSION_BULLETPROOF_PLUS) {
+ if (tx.version >= 2) {
+ const bool bulletproof = rct::is_rct_bulletproof(tx.rct_signatures.type);
+ if (bulletproof)
+ {
+ MERROR_VER("Bulletproof range proofs are not allowed after v" + std::to_string(HF_VERSION_BULLETPROOF_PLUS));
+ tvc.m_invalid_output = true;
+ return false;
+ }
+ }
+ }
+
return true;
}
//------------------------------------------------------------------
@@ -3183,7 +3209,7 @@ bool Blockchain::expand_transaction_2(transaction &tx, const crypto::hash &tx_pr
}
}
}
- else if (rv.type == rct::RCTTypeSimple || rv.type == rct::RCTTypeBulletproof || rv.type == rct::RCTTypeBulletproof2 || rv.type == rct::RCTTypeCLSAG)
+ else if (rv.type == rct::RCTTypeSimple || rv.type == rct::RCTTypeBulletproof || rv.type == rct::RCTTypeBulletproof2 || rv.type == rct::RCTTypeCLSAG || rv.type == rct::RCTTypeBulletproofPlus)
{
CHECK_AND_ASSERT_MES(!pubkeys.empty() && !pubkeys[0].empty(), false, "empty pubkeys");
rv.mixRing.resize(pubkeys.size());
@@ -3224,7 +3250,7 @@ bool Blockchain::expand_transaction_2(transaction &tx, const crypto::hash &tx_pr
}
}
}
- else if (rv.type == rct::RCTTypeCLSAG)
+ else if (rv.type == rct::RCTTypeCLSAG || rv.type == rct::RCTTypeBulletproofPlus)
{
if (!tx.pruned)
{
@@ -3516,6 +3542,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
case rct::RCTTypeBulletproof:
case rct::RCTTypeBulletproof2:
case rct::RCTTypeCLSAG:
+ case rct::RCTTypeBulletproofPlus:
{
// check all this, either reconstructed (so should really pass), or not
{
@@ -3551,7 +3578,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
}
}
- const size_t n_sigs = rv.type == rct::RCTTypeCLSAG ? rv.p.CLSAGs.size() : rv.p.MGs.size();
+ const size_t n_sigs = rct::is_rct_clsag(rv.type) ? rv.p.CLSAGs.size() : rv.p.MGs.size();
if (n_sigs != tx.vin.size())
{
MERROR_VER("Failed to check ringct signatures: mismatched MGs/vin sizes");
@@ -3560,7 +3587,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
for (size_t n = 0; n < tx.vin.size(); ++n)
{
bool error;
- if (rv.type == rct::RCTTypeCLSAG)
+ if (rct::is_rct_clsag(rv.type))
error = memcmp(&boost::get<txin_to_key>(tx.vin[n]).k_image, &rv.p.CLSAGs[n].I, 32);
else
error = rv.p.MGs[n].II.empty() || memcmp(&boost::get<txin_to_key>(tx.vin[n]).k_image, &rv.p.MGs[n].II[0], 32);
diff --git a/src/cryptonote_core/cryptonote_core.cpp b/src/cryptonote_core/cryptonote_core.cpp
index 4c6536318..1da4e2d41 100644
--- a/src/cryptonote_core/cryptonote_core.cpp
+++ b/src/cryptonote_core/cryptonote_core.cpp
@@ -879,6 +879,16 @@ namespace cryptonote
return true;
}
//-----------------------------------------------------------------------------------------------
+ static bool is_canonical_bulletproof_plus_layout(const std::vector<rct::BulletproofPlus> &proofs)
+ {
+ if (proofs.size() != 1)
+ return false;
+ const size_t sz = proofs[0].V.size();
+ if (sz == 0 || sz > BULLETPROOF_PLUS_MAX_OUTPUTS)
+ return false;
+ return true;
+ }
+ //-----------------------------------------------------------------------------------------------
bool core::handle_incoming_tx_accumulated_batch(std::vector<tx_verification_batch_info> &tx_info, bool keeped_by_block)
{
bool ret = true;
@@ -943,6 +953,17 @@ namespace cryptonote
}
rvv.push_back(&rv); // delayed batch verification
break;
+ case rct::RCTTypeBulletproofPlus:
+ if (!is_canonical_bulletproof_plus_layout(rv.p.bulletproofs_plus))
+ {
+ MERROR_VER("Bulletproof_plus does not have canonical form");
+ 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:
MERROR_VER("Unknown rct type: " << rv.type);
set_semantics_failed(tx_info[n].tx_hash);
@@ -960,7 +981,7 @@ namespace cryptonote
{
if (!tx_info[n].result)
continue;
- if (tx_info[n].tx->rct_signatures.type != rct::RCTTypeBulletproof && tx_info[n].tx->rct_signatures.type != rct::RCTTypeBulletproof2 && tx_info[n].tx->rct_signatures.type != rct::RCTTypeCLSAG)
+ if (tx_info[n].tx->rct_signatures.type != rct::RCTTypeBulletproof && tx_info[n].tx->rct_signatures.type != rct::RCTTypeBulletproof2 && tx_info[n].tx->rct_signatures.type != rct::RCTTypeCLSAG && tx_info[n].tx->rct_signatures.type != rct::RCTTypeBulletproofPlus)
continue;
if (assumed_bad || !rct::verRctSemanticsSimple(tx_info[n].tx->rct_signatures))
{
diff --git a/src/hardforks/hardforks.cpp b/src/hardforks/hardforks.cpp
index 9055b92e3..45db59a67 100644
--- a/src/hardforks/hardforks.cpp
+++ b/src/hardforks/hardforks.cpp
@@ -70,6 +70,9 @@ const hardfork_t mainnet_hard_forks[] = {
{ 13, 2210000, 0, 1598180817 },
{ 14, 2210720, 0, 1598180818 },
+
+ { 15, 8000000, 0, 1608223241 }, // temp so tests test with these consensus rules
+ { 16, 8000001, 0, 1608223242 }, // temp so tests test with these consensus rules
};
const size_t num_mainnet_hard_forks = sizeof(mainnet_hard_forks) / sizeof(mainnet_hard_forks[0]);
const uint64_t mainnet_hard_fork_version_1_till = 1009826;
diff --git a/src/ringct/CMakeLists.txt b/src/ringct/CMakeLists.txt
index 40b2dfd55..32da0f5f5 100644
--- a/src/ringct/CMakeLists.txt
+++ b/src/ringct/CMakeLists.txt
@@ -31,13 +31,15 @@ set(ringct_basic_sources
rctTypes.cpp
rctCryptoOps.c
multiexp.cc
- bulletproofs.cc)
+ bulletproofs.cc
+ bulletproofs_plus.cc)
set(ringct_basic_private_headers
rctOps.h
rctTypes.h
multiexp.h
- bulletproofs.h)
+ bulletproofs.h
+ bulletproofs_plus.h)
monero_private_headers(ringct_basic
${crypto_private_headers})
diff --git a/src/ringct/bulletproofs.cc b/src/ringct/bulletproofs.cc
index a6e12c9b3..1689e5463 100644
--- a/src/ringct/bulletproofs.cc
+++ b/src/ringct/bulletproofs.cc
@@ -70,13 +70,12 @@ static rct::key inner_product(const rct::keyV &a, const rct::keyV &b);
static constexpr size_t maxN = 64;
static constexpr size_t maxM = BULLETPROOF_MAX_OUTPUTS;
-static rct::key Hi[maxN*maxM], Gi[maxN*maxM];
static ge_p3 Hi_p3[maxN*maxM], Gi_p3[maxN*maxM];
static std::shared_ptr<straus_cached_data> straus_HiGi_cache;
static std::shared_ptr<pippenger_cached_data> pippenger_HiGi_cache;
-static const rct::key TWO = { {0x02, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 } };
-static const rct::key MINUS_ONE = { { 0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 } };
-static const rct::key MINUS_INV_EIGHT = { { 0x74, 0xa4, 0x19, 0x7a, 0xf0, 0x7d, 0x0b, 0xf7, 0x05, 0xc2, 0xda, 0x25, 0x2b, 0x5c, 0x0b, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a } };
+static const constexpr rct::key TWO = { {0x02, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 } };
+static const constexpr rct::key MINUS_ONE = { { 0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 } };
+static const constexpr rct::key MINUS_INV_EIGHT = { { 0x74, 0xa4, 0x19, 0x7a, 0xf0, 0x7d, 0x0b, 0xf7, 0x05, 0xc2, 0xda, 0x25, 0x2b, 0x5c, 0x0b, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a } };
static const rct::keyV oneN = vector_dup(rct::identity(), maxN);
static const rct::keyV twoN = vector_powers(TWO, maxN);
static const rct::key ip12 = inner_product(oneN, twoN);
@@ -100,8 +99,7 @@ static inline bool is_reduced(const rct::key &scalar)
static rct::key get_exponent(const rct::key &base, size_t idx)
{
- static const std::string domain_separator(config::HASH_KEY_BULLETPROOF_EXPONENT);
- std::string hashed = std::string((const char*)base.bytes, sizeof(base)) + domain_separator + tools::get_varint_data(idx);
+ std::string hashed = std::string((const char*)base.bytes, sizeof(base)) + config::HASH_KEY_BULLETPROOF_EXPONENT + tools::get_varint_data(idx);
rct::key e;
ge_p3 e_p3;
rct::hash_to_p3(e_p3, rct::hash2rct(crypto::cn_fast_hash(hashed.data(), hashed.size())));
@@ -121,10 +119,10 @@ static void init_exponents()
data.reserve(maxN*maxM*2);
for (size_t i = 0; i < maxN*maxM; ++i)
{
- Hi[i] = get_exponent(rct::H, i * 2);
- CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&Hi_p3[i], Hi[i].bytes) == 0, "ge_frombytes_vartime failed");
- Gi[i] = get_exponent(rct::H, i * 2 + 1);
- CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&Gi_p3[i], Gi[i].bytes) == 0, "ge_frombytes_vartime failed");
+ const rct::key Hi = get_exponent(rct::H, i * 2);
+ CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&Hi_p3[i], Hi.bytes) == 0, "ge_frombytes_vartime failed");
+ const rct::key Gi = get_exponent(rct::H, i * 2 + 1);
+ CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&Gi_p3[i], Gi.bytes) == 0, "ge_frombytes_vartime failed");
data.push_back({rct::zero(), Gi_p3[i]});
data.push_back({rct::zero(), Hi_p3[i]});
@@ -133,11 +131,10 @@ static void init_exponents()
straus_HiGi_cache = straus_init_cache(data, STRAUS_SIZE_LIMIT);
pippenger_HiGi_cache = pippenger_init_cache(data, 0, PIPPENGER_SIZE_LIMIT);
- MINFO("Hi/Gi cache size: " << (sizeof(Hi)+sizeof(Gi))/1024 << " kB");
MINFO("Hi_p3/Gi_p3 cache size: " << (sizeof(Hi_p3)+sizeof(Gi_p3))/1024 << " kB");
MINFO("Straus cache size: " << straus_get_cache_size(straus_HiGi_cache)/1024 << " kB");
MINFO("Pippenger cache size: " << pippenger_get_cache_size(pippenger_HiGi_cache)/1024 << " kB");
- size_t cache_size = (sizeof(Hi)+sizeof(Hi_p3))*2 + straus_get_cache_size(straus_HiGi_cache) + pippenger_get_cache_size(pippenger_HiGi_cache);
+ size_t cache_size = straus_get_cache_size(straus_HiGi_cache) + pippenger_get_cache_size(pippenger_HiGi_cache);
MINFO("Total cache size: " << cache_size/1024 << "kB");
init_done = true;
}
@@ -895,7 +892,8 @@ bool bulletproof_VERIFY(const std::vector<const Bulletproof*> &proofs)
multiexp_data.resize(2 * maxMN);
PERF_TIMER_START_BP(VERIFY_line_24_25_invert);
- const std::vector<rct::key> inverses = invert(to_invert);
+ const std::vector<rct::key> inverses = invert(std::move(to_invert));
+ to_invert.clear();
PERF_TIMER_STOP_BP(VERIFY_line_24_25_invert);
// setup weighted aggregates
diff --git a/src/ringct/bulletproofs_plus.cc b/src/ringct/bulletproofs_plus.cc
new file mode 100644
index 000000000..3d27849c1
--- /dev/null
+++ b/src/ringct/bulletproofs_plus.cc
@@ -0,0 +1,1121 @@
+// Copyright (c) 2017-2020, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+// conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+// of conditions and the following disclaimer in the documentation and/or other
+// materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+// used to endorse or promote products derived from this software without specific
+// prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Implements the Bulletproofs+ prover and verifier algorithms
+//
+// Preprint: https://eprint.iacr.org/2020/735, version 17 Jun 2020
+//
+// NOTE ON NOTATION:
+// In the signature constructions used in Monero, commitments to zero are treated as
+// public keys against the curve group generator `G`. This means that amount
+// commitments must use another generator `H` for values in order to show balance.
+// The result is that the roles of `g` and `h` in the preprint are effectively swapped
+// in this code, taking on the roles of `H` and `G`, respectively. Read carefully!
+
+#include <stdlib.h>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/lock_guard.hpp>
+#include "misc_log_ex.h"
+#include "span.h"
+#include "cryptonote_config.h"
+extern "C"
+{
+#include "crypto/crypto-ops.h"
+}
+#include "rctOps.h"
+#include "multiexp.h"
+#include "bulletproofs_plus.h"
+
+#undef MONERO_DEFAULT_LOG_CATEGORY
+#define MONERO_DEFAULT_LOG_CATEGORY "bulletproof_plus"
+
+#define STRAUS_SIZE_LIMIT 232
+#define PIPPENGER_SIZE_LIMIT 0
+
+namespace rct
+{
+ // Vector functions
+ static rct::key vector_exponent(const rct::keyV &a, const rct::keyV &b);
+ static rct::keyV vector_of_scalar_powers(const rct::key &x, size_t n);
+
+ // Proof bounds
+ static constexpr size_t maxN = 64; // maximum number of bits in range
+ static constexpr size_t maxM = BULLETPROOF_PLUS_MAX_OUTPUTS; // maximum number of outputs to aggregate into a single proof
+
+ // Cached public generators
+ static ge_p3 Hi_p3[maxN*maxM], Gi_p3[maxN*maxM];
+ static std::shared_ptr<straus_cached_data> straus_HiGi_cache;
+ static std::shared_ptr<pippenger_cached_data> pippenger_HiGi_cache;
+
+ // Useful scalar constants
+ static const constexpr rct::key ZERO = { {0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 } }; // 0
+ static const constexpr rct::key ONE = { {0x01, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 } }; // 1
+ static const constexpr rct::key TWO = { {0x02, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 } }; // 2
+ static const constexpr rct::key MINUS_ONE = { { 0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 } }; // -1
+ static const constexpr rct::key MINUS_INV_EIGHT = { { 0x74, 0xa4, 0x19, 0x7a, 0xf0, 0x7d, 0x0b, 0xf7, 0x05, 0xc2, 0xda, 0x25, 0x2b, 0x5c, 0x0b, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a } }; // -(8**(-1))
+ static rct::key TWO_SIXTY_FOUR_MINUS_ONE; // 2**64 - 1
+
+ // Initial transcript hash
+ static rct::key initial_transcript;
+
+ static boost::mutex init_mutex;
+
+ // Use the generator caches to compute a multiscalar multiplication
+ static inline rct::key multiexp(const std::vector<MultiexpData> &data, size_t HiGi_size)
+ {
+ if (HiGi_size > 0)
+ {
+ static_assert(232 <= STRAUS_SIZE_LIMIT, "Straus in precalc mode can only be calculated till STRAUS_SIZE_LIMIT");
+ return HiGi_size <= 232 && data.size() == HiGi_size ? straus(data, straus_HiGi_cache, 0) : pippenger(data, pippenger_HiGi_cache, HiGi_size, get_pippenger_c(data.size()));
+ }
+ else
+ {
+ return data.size() <= 95 ? straus(data, NULL, 0) : pippenger(data, NULL, 0, get_pippenger_c(data.size()));
+ }
+ }
+
+ // Confirm that a scalar is properly reduced
+ static inline bool is_reduced(const rct::key &scalar)
+ {
+ return sc_check(scalar.bytes) == 0;
+ }
+
+ // Use hashed values to produce indexed public generators
+ static ge_p3 get_exponent(const rct::key &base, size_t idx)
+ {
+ std::string hashed = std::string((const char*)base.bytes, sizeof(base)) + config::HASH_KEY_BULLETPROOF_PLUS_EXPONENT + tools::get_varint_data(idx);
+ rct::key generator;
+ ge_p3 generator_p3;
+ rct::hash_to_p3(generator_p3, rct::hash2rct(crypto::cn_fast_hash(hashed.data(), hashed.size())));
+ ge_p3_tobytes(generator.bytes, &generator_p3);
+ CHECK_AND_ASSERT_THROW_MES(!(generator == rct::identity()), "Exponent is point at infinity");
+ return generator_p3;
+ }
+
+ // Construct public generators
+ static void init_exponents()
+ {
+ boost::lock_guard<boost::mutex> lock(init_mutex);
+
+ // Only needs to be done once
+ static bool init_done = false;
+ if (init_done)
+ return;
+
+ std::vector<MultiexpData> data;
+ data.reserve(maxN*maxM*2);
+ for (size_t i = 0; i < maxN*maxM; ++i)
+ {
+ Hi_p3[i] = get_exponent(rct::H, i * 2);
+ Gi_p3[i] = get_exponent(rct::H, i * 2 + 1);
+
+ data.push_back({rct::zero(), Gi_p3[i]});
+ data.push_back({rct::zero(), Hi_p3[i]});
+ }
+
+ straus_HiGi_cache = straus_init_cache(data, STRAUS_SIZE_LIMIT);
+ pippenger_HiGi_cache = pippenger_init_cache(data, 0, PIPPENGER_SIZE_LIMIT);
+
+ // Compute 2**64 - 1 for later use in simplifying verification
+ TWO_SIXTY_FOUR_MINUS_ONE = TWO;
+ for (size_t i = 0; i < 6; i++)
+ {
+ sc_mul(TWO_SIXTY_FOUR_MINUS_ONE.bytes, TWO_SIXTY_FOUR_MINUS_ONE.bytes, TWO_SIXTY_FOUR_MINUS_ONE.bytes);
+ }
+ sc_sub(TWO_SIXTY_FOUR_MINUS_ONE.bytes, TWO_SIXTY_FOUR_MINUS_ONE.bytes, ONE.bytes);
+
+ // Generate the initial Fiat-Shamir transcript hash, which is constant across all proofs
+ const std::string domain_separator(config::HASH_KEY_BULLETPROOF_PLUS_TRANSCRIPT);
+ ge_p3 initial_transcript_p3;
+ rct::hash_to_p3(initial_transcript_p3, rct::hash2rct(crypto::cn_fast_hash(domain_separator.data(), domain_separator.size())));
+ ge_p3_tobytes(initial_transcript.bytes, &initial_transcript_p3);
+
+ init_done = true;
+ }
+
+ // Given two scalar arrays, construct a vector pre-commitment:
+ //
+ // a = (a_0, ..., a_{n-1})
+ // b = (b_0, ..., b_{n-1})
+ //
+ // Outputs a_0*Gi_0 + ... + a_{n-1}*Gi_{n-1} +
+ // b_0*Hi_0 + ... + b_{n-1}*Hi_{n-1}
+ static rct::key vector_exponent(const rct::keyV &a, const rct::keyV &b)
+ {
+ CHECK_AND_ASSERT_THROW_MES(a.size() == b.size(), "Incompatible sizes of a and b");
+ CHECK_AND_ASSERT_THROW_MES(a.size() <= maxN*maxM, "Incompatible sizes of a and maxN");
+
+ std::vector<MultiexpData> multiexp_data;
+ multiexp_data.reserve(a.size()*2);
+ for (size_t i = 0; i < a.size(); ++i)
+ {
+ multiexp_data.emplace_back(a[i], Gi_p3[i]);
+ multiexp_data.emplace_back(b[i], Hi_p3[i]);
+ }
+ return multiexp(multiexp_data, 2 * a.size());
+ }
+
+ // Helper function used to compute the L and R terms used in the inner-product round function
+ static rct::key compute_LR(size_t size, const rct::key &y, const std::vector<ge_p3> &G, size_t G0, const std::vector<ge_p3> &H, size_t H0, const rct::keyV &a, size_t a0, const rct::keyV &b, size_t b0, const rct::key &c, const rct::key &d)
+ {
+ CHECK_AND_ASSERT_THROW_MES(size + G0 <= G.size(), "Incompatible size for G");
+ CHECK_AND_ASSERT_THROW_MES(size + H0 <= H.size(), "Incompatible size for H");
+ CHECK_AND_ASSERT_THROW_MES(size + a0 <= a.size(), "Incompatible size for a");
+ CHECK_AND_ASSERT_THROW_MES(size + b0 <= b.size(), "Incompatible size for b");
+ CHECK_AND_ASSERT_THROW_MES(size <= maxN*maxM, "size is too large");
+
+ std::vector<MultiexpData> multiexp_data;
+ multiexp_data.resize(size*2 + 2);
+ rct::key temp;
+ for (size_t i = 0; i < size; ++i)
+ {
+ sc_mul(temp.bytes, a[a0+i].bytes, y.bytes);
+ sc_mul(multiexp_data[i*2].scalar.bytes, temp.bytes, INV_EIGHT.bytes);
+ multiexp_data[i*2].point = G[G0+i];
+
+ sc_mul(multiexp_data[i*2+1].scalar.bytes, b[b0+i].bytes, INV_EIGHT.bytes);
+ multiexp_data[i*2+1].point = H[H0+i];
+ }
+
+ sc_mul(multiexp_data[2*size].scalar.bytes, c.bytes, INV_EIGHT.bytes);
+ ge_p3 H_p3;
+ ge_frombytes_vartime(&H_p3, rct::H.bytes);
+ multiexp_data[2*size].point = H_p3;
+
+ sc_mul(multiexp_data[2*size+1].scalar.bytes, d.bytes, INV_EIGHT.bytes);
+ ge_p3 G_p3;
+ ge_frombytes_vartime(&G_p3, rct::G.bytes);
+ multiexp_data[2*size+1].point = G_p3;
+
+ return multiexp(multiexp_data, 0);
+ }
+
+ // Given a scalar, construct a vector of its powers:
+ //
+ // Output (1,x,x**2,...,x**{n-1})
+ static rct::keyV vector_of_scalar_powers(const rct::key &x, size_t n)
+ {
+ CHECK_AND_ASSERT_THROW_MES(n != 0, "Need n > 0");
+
+ rct::keyV res(n);
+ res[0] = rct::identity();
+ if (n == 1)
+ return res;
+ res[1] = x;
+ for (size_t i = 2; i < n; ++i)
+ {
+ sc_mul(res[i].bytes, res[i-1].bytes, x.bytes);
+ }
+ return res;
+ }
+
+ // Given a scalar, construct the sum of its powers from 2 to n (where n is a power of 2):
+ //
+ // Output x**2 + x**4 + x**6 + ... + x**n
+ static rct::key sum_of_even_powers(const rct::key &x, size_t n)
+ {
+ CHECK_AND_ASSERT_THROW_MES((n & (n - 1)) == 0, "Need n to be a power of 2");
+ CHECK_AND_ASSERT_THROW_MES(n != 0, "Need n > 0");
+
+ rct::key x1 = copy(x);
+ sc_mul(x1.bytes, x1.bytes, x1.bytes);
+
+ rct::key res = copy(x1);
+ while (n > 2)
+ {
+ sc_muladd(res.bytes, x1.bytes, res.bytes, res.bytes);
+ sc_mul(x1.bytes, x1.bytes, x1.bytes);
+ n /= 2;
+ }
+
+ return res;
+ }
+
+ // Given a scalar, return the sum of its powers from 1 to n
+ //
+ // Output x**1 + x**2 + x**3 + ... + x**n
+ static rct::key sum_of_scalar_powers(const rct::key &x, size_t n)
+ {
+ CHECK_AND_ASSERT_THROW_MES(n != 0, "Need n > 0");
+
+ rct::key res = ONE;
+ if (n == 1)
+ return x;
+
+ n += 1;
+ rct::key x1 = copy(x);
+
+ const bool is_power_of_2 = (n & (n - 1)) == 0;
+ if (is_power_of_2)
+ {
+ sc_add(res.bytes, res.bytes, x1.bytes);
+ while (n > 2)
+ {
+ sc_mul(x1.bytes, x1.bytes, x1.bytes);
+ sc_muladd(res.bytes, x1.bytes, res.bytes, res.bytes);
+ n /= 2;
+ }
+ }
+ else
+ {
+ rct::key prev = x1;
+ for (size_t i = 1; i < n; ++i)
+ {
+ if (i > 1)
+ sc_mul(prev.bytes, prev.bytes, x1.bytes);
+ sc_add(res.bytes, res.bytes, prev.bytes);
+ }
+ }
+ sc_sub(res.bytes, res.bytes, ONE.bytes);
+
+ return res;
+ }
+
+ // Given two scalar arrays, construct the weighted inner product against another scalar
+ //
+ // Output a_0*b_0*y**1 + a_1*b_1*y**2 + ... + a_{n-1}*b_{n-1}*y**n
+ static rct::key weighted_inner_product(const epee::span<const rct::key> &a, const epee::span<const rct::key> &b, const rct::key &y)
+ {
+ CHECK_AND_ASSERT_THROW_MES(a.size() == b.size(), "Incompatible sizes of a and b");
+ rct::key res = rct::zero();
+ rct::key y_power = ONE;
+ rct::key temp;
+ for (size_t i = 0; i < a.size(); ++i)
+ {
+ sc_mul(temp.bytes, a[i].bytes, b[i].bytes);
+ sc_mul(y_power.bytes, y_power.bytes, y.bytes);
+ sc_muladd(res.bytes, temp.bytes, y_power.bytes, res.bytes);
+ }
+ return res;
+ }
+
+ static rct::key weighted_inner_product(const rct::keyV &a, const epee::span<const rct::key> &b, const rct::key &y)
+ {
+ CHECK_AND_ASSERT_THROW_MES(a.size() == b.size(), "Incompatible sizes of a and b");
+ return weighted_inner_product(epee::to_span(a), b, y);
+ }
+
+ // Fold inner-product point vectors
+ static void hadamard_fold(std::vector<ge_p3> &v, const rct::key &a, const rct::key &b)
+ {
+ CHECK_AND_ASSERT_THROW_MES((v.size() & 1) == 0, "Vector size should be even");
+ const size_t sz = v.size() / 2;
+ for (size_t n = 0; n < sz; ++n)
+ {
+ ge_dsmp c[2];
+ ge_dsm_precomp(c[0], &v[n]);
+ ge_dsm_precomp(c[1], &v[sz + n]);
+ ge_double_scalarmult_precomp_vartime2_p3(&v[n], a.bytes, c[0], b.bytes, c[1]);
+ }
+ v.resize(sz);
+ }
+
+ // Add vectors componentwise
+ static rct::keyV vector_add(const rct::keyV &a, const rct::keyV &b)
+ {
+ CHECK_AND_ASSERT_THROW_MES(a.size() == b.size(), "Incompatible sizes of a and b");
+ rct::keyV res(a.size());
+ for (size_t i = 0; i < a.size(); ++i)
+ {
+ sc_add(res[i].bytes, a[i].bytes, b[i].bytes);
+ }
+ return res;
+ }
+
+ // Add a scalar to all elements of a vector
+ static rct::keyV vector_add(const rct::keyV &a, const rct::key &b)
+ {
+ rct::keyV res(a.size());
+ for (size_t i = 0; i < a.size(); ++i)
+ {
+ sc_add(res[i].bytes, a[i].bytes, b.bytes);
+ }
+ return res;
+ }
+
+ // Subtract a scalar from all elements of a vector
+ static rct::keyV vector_subtract(const rct::keyV &a, const rct::key &b)
+ {
+ rct::keyV res(a.size());
+ for (size_t i = 0; i < a.size(); ++i)
+ {
+ sc_sub(res[i].bytes, a[i].bytes, b.bytes);
+ }
+ return res;
+ }
+
+ // Multiply a scalar by all elements of a vector
+ static rct::keyV vector_scalar(const epee::span<const rct::key> &a, const rct::key &x)
+ {
+ rct::keyV res(a.size());
+ for (size_t i = 0; i < a.size(); ++i)
+ {
+ sc_mul(res[i].bytes, a[i].bytes, x.bytes);
+ }
+ return res;
+ }
+
+ // Inversion helper function
+ static rct::key sm(rct::key y, int n, const rct::key &x)
+ {
+ while (n--)
+ sc_mul(y.bytes, y.bytes, y.bytes);
+ sc_mul(y.bytes, y.bytes, x.bytes);
+ return y;
+ }
+
+ // Compute the inverse of a nonzero
+ static rct::key invert(const rct::key &x)
+ {
+ CHECK_AND_ASSERT_THROW_MES(!(x == ZERO), "Cannot invert zero!");
+ rct::key _1, _10, _100, _11, _101, _111, _1001, _1011, _1111;
+
+ _1 = x;
+ sc_mul(_10.bytes, _1.bytes, _1.bytes);
+ sc_mul(_100.bytes, _10.bytes, _10.bytes);
+ sc_mul(_11.bytes, _10.bytes, _1.bytes);
+ sc_mul(_101.bytes, _10.bytes, _11.bytes);
+ sc_mul(_111.bytes, _10.bytes, _101.bytes);
+ sc_mul(_1001.bytes, _10.bytes, _111.bytes);
+ sc_mul(_1011.bytes, _10.bytes, _1001.bytes);
+ sc_mul(_1111.bytes, _100.bytes, _1011.bytes);
+
+ rct::key inv;
+ sc_mul(inv.bytes, _1111.bytes, _1.bytes);
+
+ inv = sm(inv, 123 + 3, _101);
+ inv = sm(inv, 2 + 2, _11);
+ inv = sm(inv, 1 + 4, _1111);
+ inv = sm(inv, 1 + 4, _1111);
+ inv = sm(inv, 4, _1001);
+ inv = sm(inv, 2, _11);
+ inv = sm(inv, 1 + 4, _1111);
+ inv = sm(inv, 1 + 3, _101);
+ inv = sm(inv, 3 + 3, _101);
+ inv = sm(inv, 3, _111);
+ inv = sm(inv, 1 + 4, _1111);
+ inv = sm(inv, 2 + 3, _111);
+ inv = sm(inv, 2 + 2, _11);
+ inv = sm(inv, 1 + 4, _1011);
+ inv = sm(inv, 2 + 4, _1011);
+ inv = sm(inv, 6 + 4, _1001);
+ inv = sm(inv, 2 + 2, _11);
+ inv = sm(inv, 3 + 2, _11);
+ inv = sm(inv, 3 + 2, _11);
+ inv = sm(inv, 1 + 4, _1001);
+ inv = sm(inv, 1 + 3, _111);
+ inv = sm(inv, 2 + 4, _1111);
+ inv = sm(inv, 1 + 4, _1011);
+ inv = sm(inv, 3, _101);
+ inv = sm(inv, 2 + 4, _1111);
+ inv = sm(inv, 3, _101);
+ inv = sm(inv, 1 + 2, _11);
+
+ return inv;
+ }
+
+ // Invert a batch of scalars, all of which _must_ be nonzero
+ static rct::keyV invert(rct::keyV x)
+ {
+ rct::keyV scratch;
+ scratch.reserve(x.size());
+
+ rct::key acc = rct::identity();
+ for (size_t n = 0; n < x.size(); ++n)
+ {
+ CHECK_AND_ASSERT_THROW_MES(!(x[n] == ZERO), "Cannot invert zero!");
+ scratch.push_back(acc);
+ if (n == 0)
+ acc = x[0];
+ else
+ sc_mul(acc.bytes, acc.bytes, x[n].bytes);
+ }
+
+ acc = invert(acc);
+
+ rct::key tmp;
+ for (int i = x.size(); i-- > 0; )
+ {
+ sc_mul(tmp.bytes, acc.bytes, x[i].bytes);
+ sc_mul(x[i].bytes, acc.bytes, scratch[i].bytes);
+ acc = tmp;
+ }
+
+ return x;
+ }
+
+ // Compute the slice of a vector
+ static epee::span<const rct::key> slice(const rct::keyV &a, size_t start, size_t stop)
+ {
+ CHECK_AND_ASSERT_THROW_MES(start < a.size(), "Invalid start index");
+ CHECK_AND_ASSERT_THROW_MES(stop <= a.size(), "Invalid stop index");
+ CHECK_AND_ASSERT_THROW_MES(start < stop, "Invalid start/stop indices");
+ return epee::span<const rct::key>(&a[start], stop - start);
+ }
+
+ // Update the transcript
+ static rct::key transcript_update(rct::key &transcript, const rct::key &update_0)
+ {
+ rct::key data[2];
+ data[0] = transcript;
+ data[1] = update_0;
+ rct::hash_to_scalar(transcript, data, sizeof(data));
+ return transcript;
+ }
+
+ static rct::key transcript_update(rct::key &transcript, const rct::key &update_0, const rct::key &update_1)
+ {
+ rct::key data[3];
+ data[0] = transcript;
+ data[1] = update_0;
+ data[2] = update_1;
+ rct::hash_to_scalar(transcript, data, sizeof(data));
+ return transcript;
+ }
+
+ // Given a value v [0..2**N) and a mask gamma, construct a range proof
+ BulletproofPlus bulletproof_plus_PROVE(const rct::key &sv, const rct::key &gamma)
+ {
+ return bulletproof_plus_PROVE(rct::keyV(1, sv), rct::keyV(1, gamma));
+ }
+
+ BulletproofPlus bulletproof_plus_PROVE(uint64_t v, const rct::key &gamma)
+ {
+ return bulletproof_plus_PROVE(std::vector<uint64_t>(1, v), rct::keyV(1, gamma));
+ }
+
+ // Given a set of values v [0..2**N) and masks gamma, construct a range proof
+ BulletproofPlus bulletproof_plus_PROVE(const rct::keyV &sv, const rct::keyV &gamma)
+ {
+ // Sanity check on inputs
+ CHECK_AND_ASSERT_THROW_MES(sv.size() == gamma.size(), "Incompatible sizes of sv and gamma");
+ CHECK_AND_ASSERT_THROW_MES(!sv.empty(), "sv is empty");
+ for (const rct::key &sve: sv)
+ CHECK_AND_ASSERT_THROW_MES(is_reduced(sve), "Invalid sv input");
+ for (const rct::key &g: gamma)
+ CHECK_AND_ASSERT_THROW_MES(is_reduced(g), "Invalid gamma input");
+
+ init_exponents();
+
+ // Useful proof bounds
+ //
+ // N: number of bits in each range (here, 64)
+ // logN: base-2 logarithm
+ // M: first power of 2 greater than or equal to the number of range proofs to aggregate
+ // logM: base-2 logarithm
+ constexpr size_t logN = 6; // log2(64)
+ constexpr size_t N = 1<<logN;
+ size_t M, logM;
+ for (logM = 0; (M = 1<<logM) <= maxM && M < sv.size(); ++logM);
+ CHECK_AND_ASSERT_THROW_MES(M <= maxM, "sv/gamma are too large");
+ const size_t logMN = logM + logN;
+ const size_t MN = M * N;
+
+ rct::keyV V(sv.size());
+ rct::keyV aL(MN), aR(MN);
+ rct::keyV aL8(MN), aR8(MN);
+ rct::key temp;
+ rct::key temp2;
+
+ // Prepare output commitments and offset by a factor of 8**(-1)
+ //
+ // This offset is applied to other group elements as well;
+ // it allows us to apply a multiply-by-8 operation in the verifier efficiently
+ // to ensure that the resulting group elements are in the prime-order point subgroup
+ // and avoid much more constly multiply-by-group-order operations.
+ for (size_t i = 0; i < sv.size(); ++i)
+ {
+ rct::key gamma8, sv8;
+ sc_mul(gamma8.bytes, gamma[i].bytes, INV_EIGHT.bytes);
+ sc_mul(sv8.bytes, sv[i].bytes, INV_EIGHT.bytes);
+ rct::addKeys2(V[i], gamma8, sv8, rct::H);
+ }
+
+ // Decompose values
+ //
+ // Note that this effectively pads the set to a power of 2, which is required for the inner-product argument later.
+ for (size_t j = 0; j < M; ++j)
+ {
+ for (size_t i = N; i-- > 0; )
+ {
+ if (j < sv.size() && (sv[j][i/8] & (((uint64_t)1)<<(i%8))))
+ {
+ aL[j*N+i] = rct::identity();
+ aL8[j*N+i] = INV_EIGHT;
+ aR[j*N+i] = aR8[j*N+i] = rct::zero();
+ }
+ else
+ {
+ aL[j*N+i] = aL8[j*N+i] = rct::zero();
+ aR[j*N+i] = MINUS_ONE;
+ aR8[j*N+i] = MINUS_INV_EIGHT;
+ }
+ }
+ }
+
+try_again:
+ // This is a Fiat-Shamir transcript
+ rct::key transcript = copy(initial_transcript);
+ transcript = transcript_update(transcript, rct::hash_to_scalar(V));
+
+ // A
+ rct::key alpha = rct::skGen();
+ rct::key pre_A = vector_exponent(aL8, aR8);
+ rct::key A;
+ sc_mul(temp.bytes, alpha.bytes, INV_EIGHT.bytes);
+ rct::addKeys(A, pre_A, rct::scalarmultBase(temp));
+
+ // Challenges
+ rct::key y = transcript_update(transcript, A);
+ if (y == rct::zero())
+ {
+ MINFO("y is 0, trying again");
+ goto try_again;
+ }
+ rct::key z = transcript = rct::hash_to_scalar(y);
+ if (z == rct::zero())
+ {
+ MINFO("z is 0, trying again");
+ goto try_again;
+ }
+ rct::key z_squared;
+ sc_mul(z_squared.bytes, z.bytes, z.bytes);
+
+ // Windowed vector
+ // d[j*N+i] = z**(2*(j+1)) * 2**i
+ //
+ // We compute this iteratively in order to reduce scalar operations.
+ rct::keyV d(MN, rct::zero());
+ d[0] = z_squared;
+ for (size_t i = 1; i < N; i++)
+ {
+ sc_mul(d[i].bytes, d[i-1].bytes, TWO.bytes);
+ }
+
+ for (size_t j = 1; j < M; j++)
+ {
+ for (size_t i = 0; i < N; i++)
+ {
+ sc_mul(d[j*N+i].bytes, d[(j-1)*N+i].bytes, z_squared.bytes);
+ }
+ }
+
+ rct::keyV y_powers = vector_of_scalar_powers(y, MN+2);
+
+ // Prepare inner product terms
+ rct::keyV aL1 = vector_subtract(aL, z);
+
+ rct::keyV aR1 = vector_add(aR, z);
+ rct::keyV d_y(MN);
+ for (size_t i = 0; i < MN; i++)
+ {
+ sc_mul(d_y[i].bytes, d[i].bytes, y_powers[MN-i].bytes);
+ }
+ aR1 = vector_add(aR1, d_y);
+
+ rct::key alpha1 = alpha;
+ temp = ONE;
+ for (size_t j = 0; j < sv.size(); j++)
+ {
+ sc_mul(temp.bytes, temp.bytes, z_squared.bytes);
+ sc_mul(temp2.bytes, y_powers[MN+1].bytes, temp.bytes);
+ sc_mul(temp2.bytes, temp2.bytes, gamma[j].bytes);
+ sc_add(alpha1.bytes, alpha1.bytes, temp2.bytes);
+ }
+
+ // These are used in the inner product rounds
+ size_t nprime = MN;
+ std::vector<ge_p3> Gprime(MN);
+ std::vector<ge_p3> Hprime(MN);
+ rct::keyV aprime(MN);
+ rct::keyV bprime(MN);
+
+ const rct::key yinv = invert(y);
+ rct::keyV yinvpow(MN);
+ yinvpow[0] = ONE;
+ for (size_t i = 0; i < MN; ++i)
+ {
+ Gprime[i] = Gi_p3[i];
+ Hprime[i] = Hi_p3[i];
+ if (i > 0)
+ {
+ sc_mul(yinvpow[i].bytes, yinvpow[i-1].bytes, yinv.bytes);
+ }
+ aprime[i] = aL1[i];
+ bprime[i] = aR1[i];
+ }
+ rct::keyV L(logMN);
+ rct::keyV R(logMN);
+ int round = 0;
+
+ // Inner-product rounds
+ while (nprime > 1)
+ {
+ nprime /= 2;
+
+ rct::key cL = weighted_inner_product(slice(aprime, 0, nprime), slice(bprime, nprime, bprime.size()), y);
+ rct::key cR = weighted_inner_product(vector_scalar(slice(aprime, nprime, aprime.size()), y_powers[nprime]), slice(bprime, 0, nprime), y);
+
+ rct::key dL = rct::skGen();
+ rct::key dR = rct::skGen();
+
+ L[round] = compute_LR(nprime, yinvpow[nprime], Gprime, nprime, Hprime, 0, aprime, 0, bprime, nprime, cL, dL);
+ R[round] = compute_LR(nprime, y_powers[nprime], Gprime, 0, Hprime, nprime, aprime, nprime, bprime, 0, cR, dR);
+
+ const rct::key challenge = transcript_update(transcript, L[round], R[round]);
+ if (challenge == rct::zero())
+ {
+ MINFO("challenge is 0, trying again");
+ goto try_again;
+ }
+
+ const rct::key challenge_inv = invert(challenge);
+
+ sc_mul(temp.bytes, yinvpow[nprime].bytes, challenge.bytes);
+ hadamard_fold(Gprime, challenge_inv, temp);
+ hadamard_fold(Hprime, challenge, challenge_inv);
+
+ sc_mul(temp.bytes, challenge_inv.bytes, y_powers[nprime].bytes);
+ aprime = vector_add(vector_scalar(slice(aprime, 0, nprime), challenge), vector_scalar(slice(aprime, nprime, aprime.size()), temp));
+ bprime = vector_add(vector_scalar(slice(bprime, 0, nprime), challenge_inv), vector_scalar(slice(bprime, nprime, bprime.size()), challenge));
+
+ rct::key challenge_squared;
+ sc_mul(challenge_squared.bytes, challenge.bytes, challenge.bytes);
+ rct::key challenge_squared_inv = invert(challenge_squared);
+ sc_muladd(alpha1.bytes, dL.bytes, challenge_squared.bytes, alpha1.bytes);
+ sc_muladd(alpha1.bytes, dR.bytes, challenge_squared_inv.bytes, alpha1.bytes);
+
+ ++round;
+ }
+
+ // Final round computations
+ rct::key r = rct::skGen();
+ rct::key s = rct::skGen();
+ rct::key d_ = rct::skGen();
+ rct::key eta = rct::skGen();
+
+ std::vector<MultiexpData> A1_data;
+ A1_data.reserve(4);
+ A1_data.resize(4);
+
+ sc_mul(A1_data[0].scalar.bytes, r.bytes, INV_EIGHT.bytes);
+ A1_data[0].point = Gprime[0];
+
+ sc_mul(A1_data[1].scalar.bytes, s.bytes, INV_EIGHT.bytes);
+ A1_data[1].point = Hprime[0];
+
+ sc_mul(A1_data[2].scalar.bytes, d_.bytes, INV_EIGHT.bytes);
+ ge_p3 G_p3;
+ ge_frombytes_vartime(&G_p3, rct::G.bytes);
+ A1_data[2].point = G_p3;
+
+ sc_mul(temp.bytes, r.bytes, y.bytes);
+ sc_mul(temp.bytes, temp.bytes, bprime[0].bytes);
+ sc_mul(temp2.bytes, s.bytes, y.bytes);
+ sc_mul(temp2.bytes, temp2.bytes, aprime[0].bytes);
+ sc_add(temp.bytes, temp.bytes, temp2.bytes);
+ sc_mul(A1_data[3].scalar.bytes, temp.bytes, INV_EIGHT.bytes);
+ ge_p3 H_p3;
+ ge_frombytes_vartime(&H_p3, rct::H.bytes);
+ A1_data[3].point = H_p3;
+
+ rct::key A1 = multiexp(A1_data, 0);
+
+ sc_mul(temp.bytes, r.bytes, y.bytes);
+ sc_mul(temp.bytes, temp.bytes, s.bytes);
+ sc_mul(temp.bytes, temp.bytes, INV_EIGHT.bytes);
+ sc_mul(temp2.bytes, eta.bytes, INV_EIGHT.bytes);
+ rct::key B;
+ rct::addKeys2(B, temp2, temp, rct::H);
+
+ rct::key e = transcript_update(transcript, A1, B);
+ if (e == rct::zero())
+ {
+ MINFO("e is 0, trying again");
+ goto try_again;
+ }
+ rct::key e_squared;
+ sc_mul(e_squared.bytes, e.bytes, e.bytes);
+
+ rct::key r1;
+ sc_muladd(r1.bytes, aprime[0].bytes, e.bytes, r.bytes);
+
+ rct::key s1;
+ sc_muladd(s1.bytes, bprime[0].bytes, e.bytes, s.bytes);
+
+ rct::key d1;
+ sc_muladd(d1.bytes, d_.bytes, e.bytes, eta.bytes);
+ sc_muladd(d1.bytes, alpha1.bytes, e_squared.bytes, d1.bytes);
+
+ return BulletproofPlus(std::move(V), A, A1, B, r1, s1, d1, std::move(L), std::move(R));
+ }
+
+ BulletproofPlus bulletproof_plus_PROVE(const std::vector<uint64_t> &v, const rct::keyV &gamma)
+ {
+ CHECK_AND_ASSERT_THROW_MES(v.size() == gamma.size(), "Incompatible sizes of v and gamma");
+
+ // vG + gammaH
+ rct::keyV sv(v.size());
+ for (size_t i = 0; i < v.size(); ++i)
+ {
+ sv[i] = rct::d2h(v[i]);
+ }
+ return bulletproof_plus_PROVE(sv, gamma);
+ }
+
+ struct bp_plus_proof_data_t
+ {
+ rct::key y, z, e;
+ std::vector<rct::key> challenges;
+ size_t logM, inv_offset;
+ };
+
+ // Given a batch of range proofs, determine if they are all valid
+ bool bulletproof_plus_VERIFY(const std::vector<const BulletproofPlus*> &proofs)
+ {
+ init_exponents();
+
+ const size_t logN = 6;
+ const size_t N = 1 << logN;
+
+ // Set up
+ size_t max_length = 0; // size of each of the longest proof's inner-product vectors
+ size_t nV = 0; // number of output commitments across all proofs
+ size_t inv_offset = 0;
+ size_t max_logM = 0;
+
+ std::vector<bp_plus_proof_data_t> proof_data;
+ proof_data.reserve(proofs.size());
+
+ // We'll perform only a single batch inversion across all proofs in the batch,
+ // since batch inversion requires only one scalar inversion operation.
+ std::vector<rct::key> to_invert;
+ to_invert.reserve(11 * proofs.size()); // maximal size, given the aggregation limit
+
+ for (const BulletproofPlus *p: proofs)
+ {
+ const BulletproofPlus &proof = *p;
+
+ // Sanity checks
+ CHECK_AND_ASSERT_MES(is_reduced(proof.r1), false, "Input scalar not in range");
+ CHECK_AND_ASSERT_MES(is_reduced(proof.s1), false, "Input scalar not in range");
+ CHECK_AND_ASSERT_MES(is_reduced(proof.d1), false, "Input scalar not in range");
+
+ CHECK_AND_ASSERT_MES(proof.V.size() >= 1, false, "V does not have at least one element");
+ CHECK_AND_ASSERT_MES(proof.L.size() == proof.R.size(), false, "Mismatched L and R sizes");
+ CHECK_AND_ASSERT_MES(proof.L.size() > 0, false, "Empty proof");
+
+ max_length = std::max(max_length, proof.L.size());
+ nV += proof.V.size();
+
+ proof_data.push_back({});
+ bp_plus_proof_data_t &pd = proof_data.back();
+
+ // Reconstruct the challenges
+ rct::key transcript = copy(initial_transcript);
+ transcript = transcript_update(transcript, rct::hash_to_scalar(proof.V));
+ pd.y = transcript_update(transcript, proof.A);
+ CHECK_AND_ASSERT_MES(!(pd.y == rct::zero()), false, "y == 0");
+ pd.z = transcript = rct::hash_to_scalar(pd.y);
+ CHECK_AND_ASSERT_MES(!(pd.z == rct::zero()), false, "z == 0");
+
+ // Determine the number of inner-product rounds based on proof size
+ size_t M;
+ for (pd.logM = 0; (M = 1<<pd.logM) <= maxM && M < proof.V.size(); ++pd.logM);
+ CHECK_AND_ASSERT_MES(proof.L.size() == 6+pd.logM, false, "Proof is not the expected size");
+ max_logM = std::max(pd.logM, max_logM);
+
+ const size_t rounds = pd.logM+logN;
+ CHECK_AND_ASSERT_MES(rounds > 0, false, "Zero rounds");
+
+ // The inner-product challenges are computed per round
+ pd.challenges.resize(rounds);
+ for (size_t j = 0; j < rounds; ++j)
+ {
+ pd.challenges[j] = transcript_update(transcript, proof.L[j], proof.R[j]);
+ CHECK_AND_ASSERT_MES(!(pd.challenges[j] == rct::zero()), false, "challenges[j] == 0");
+ }
+
+ // Final challenge
+ pd.e = transcript_update(transcript,proof.A1,proof.B);
+ CHECK_AND_ASSERT_MES(!(pd.e == rct::zero()), false, "e == 0");
+
+ // Batch scalar inversions
+ pd.inv_offset = inv_offset;
+ for (size_t j = 0; j < rounds; ++j)
+ to_invert.push_back(pd.challenges[j]);
+ to_invert.push_back(pd.y);
+ inv_offset += rounds + 1;
+ }
+ CHECK_AND_ASSERT_MES(max_length < 32, false, "At least one proof is too large");
+ size_t maxMN = 1u << max_length;
+
+ rct::key temp;
+ rct::key temp2;
+
+ // Final batch proof data
+ std::vector<MultiexpData> multiexp_data;
+ multiexp_data.reserve(nV + (2 * (max_logM + logN) + 3) * proofs.size() + 2 * maxMN);
+ multiexp_data.resize(2 * maxMN);
+
+ const std::vector<rct::key> inverses = invert(std::move(to_invert));
+ to_invert.clear();
+
+ // Weights and aggregates
+ //
+ // The idea is to take the single multiscalar multiplication used in the verification
+ // of each proof in the batch and weight it using a random weighting factor, resulting
+ // in just one multiscalar multiplication check to zero for the entire batch.
+ // We can further simplify the verifier complexity by including common group elements
+ // only once in this single multiscalar multiplication.
+ // Common group elements' weighted scalar sums are tracked across proofs for this reason.
+ //
+ // To build a multiscalar multiplication for each proof, we use the method described in
+ // Section 6.1 of the preprint. Note that the result given there does not account for
+ // the construction of the inner-product inputs that are produced in the range proof
+ // verifier algorithm; we have done so here.
+ rct::key G_scalar = rct::zero();
+ rct::key H_scalar = rct::zero();
+ rct::keyV Gi_scalars(maxMN, rct::zero());
+ rct::keyV Hi_scalars(maxMN, rct::zero());
+
+ int proof_data_index = 0;
+ rct::keyV challenges_cache;
+ std::vector<ge_p3> proof8_V, proof8_L, proof8_R;
+
+ // Process each proof and add to the weighted batch
+ for (const BulletproofPlus *p: proofs)
+ {
+ const BulletproofPlus &proof = *p;
+ const bp_plus_proof_data_t &pd = proof_data[proof_data_index++];
+
+ CHECK_AND_ASSERT_MES(proof.L.size() == 6+pd.logM, false, "Proof is not the expected size");
+ const size_t M = 1 << pd.logM;
+ const size_t MN = M*N;
+
+ // Random weighting factor must be nonzero, which is exceptionally unlikely!
+ rct::key weight = ZERO;
+ while (weight == ZERO)
+ {
+ weight = rct::skGen();
+ }
+
+ // Rescale previously offset proof elements
+ //
+ // This ensures that all such group elements are in the prime-order subgroup.
+ proof8_V.resize(proof.V.size()); for (size_t i = 0; i < proof.V.size(); ++i) rct::scalarmult8(proof8_V[i], proof.V[i]);
+ proof8_L.resize(proof.L.size()); for (size_t i = 0; i < proof.L.size(); ++i) rct::scalarmult8(proof8_L[i], proof.L[i]);
+ proof8_R.resize(proof.R.size()); for (size_t i = 0; i < proof.R.size(); ++i) rct::scalarmult8(proof8_R[i], proof.R[i]);
+ ge_p3 proof8_A1;
+ ge_p3 proof8_B;
+ ge_p3 proof8_A;
+ rct::scalarmult8(proof8_A1, proof.A1);
+ rct::scalarmult8(proof8_B, proof.B);
+ rct::scalarmult8(proof8_A, proof.A);
+
+ // Compute necessary powers of the y-challenge
+ rct::key y_MN = copy(pd.y);
+ rct::key y_MN_1;
+ size_t temp_MN = MN;
+ while (temp_MN > 1)
+ {
+ sc_mul(y_MN.bytes, y_MN.bytes, y_MN.bytes);
+ temp_MN /= 2;
+ }
+ sc_mul(y_MN_1.bytes, y_MN.bytes, pd.y.bytes);
+
+ // V_j: -e**2 * z**(2*j+1) * y**(MN+1) * weight
+ rct::key e_squared;
+ sc_mul(e_squared.bytes, pd.e.bytes, pd.e.bytes);
+
+ rct::key z_squared;
+ sc_mul(z_squared.bytes, pd.z.bytes, pd.z.bytes);
+
+ sc_sub(temp.bytes, ZERO.bytes, e_squared.bytes);
+ sc_mul(temp.bytes, temp.bytes, y_MN_1.bytes);
+ sc_mul(temp.bytes, temp.bytes, weight.bytes);
+ for (size_t j = 0; j < proof8_V.size(); j++)
+ {
+ sc_mul(temp.bytes, temp.bytes, z_squared.bytes);
+ multiexp_data.emplace_back(temp, proof8_V[j]);
+ }
+
+ // B: -weight
+ sc_mul(temp.bytes, MINUS_ONE.bytes, weight.bytes);
+ multiexp_data.emplace_back(temp, proof8_B);
+
+ // A1: -weight*e
+ sc_mul(temp.bytes, temp.bytes, pd.e.bytes);
+ multiexp_data.emplace_back(temp, proof8_A1);
+
+ // A: -weight*e*e
+ rct::key minus_weight_e_squared;
+ sc_mul(minus_weight_e_squared.bytes, temp.bytes, pd.e.bytes);
+ multiexp_data.emplace_back(minus_weight_e_squared, proof8_A);
+
+ // G: weight*d1
+ sc_muladd(G_scalar.bytes, weight.bytes, proof.d1.bytes, G_scalar.bytes);
+
+ // Windowed vector
+ // d[j*N+i] = z**(2*(j+1)) * 2**i
+ rct::keyV d(MN, rct::zero());
+ d[0] = z_squared;
+ for (size_t i = 1; i < N; i++)
+ {
+ sc_add(d[i].bytes, d[i-1].bytes, d[i-1].bytes);
+ }
+
+ for (size_t j = 1; j < M; j++)
+ {
+ for (size_t i = 0; i < N; i++)
+ {
+ sc_mul(d[j*N+i].bytes, d[(j-1)*N+i].bytes, z_squared.bytes);
+ }
+ }
+
+ // More efficient computation of sum(d)
+ rct::key sum_d;
+ sc_mul(sum_d.bytes, TWO_SIXTY_FOUR_MINUS_ONE.bytes, sum_of_even_powers(pd.z, 2*M).bytes);
+
+ // H: weight*( r1*y*s1 + e**2*( y**(MN+1)*z*sum(d) + (z**2-z)*sum(y) ) )
+ rct::key sum_y = sum_of_scalar_powers(pd.y, MN);
+ sc_sub(temp.bytes, z_squared.bytes, pd.z.bytes);
+ sc_mul(temp.bytes, temp.bytes, sum_y.bytes);
+
+ sc_mul(temp2.bytes, y_MN_1.bytes, pd.z.bytes);
+ sc_mul(temp2.bytes, temp2.bytes, sum_d.bytes);
+ sc_add(temp.bytes, temp.bytes, temp2.bytes);
+ sc_mul(temp.bytes, temp.bytes, e_squared.bytes);
+ sc_mul(temp2.bytes, proof.r1.bytes, pd.y.bytes);
+ sc_mul(temp2.bytes, temp2.bytes, proof.s1.bytes);
+ sc_add(temp.bytes, temp.bytes, temp2.bytes);
+ sc_muladd(H_scalar.bytes, temp.bytes, weight.bytes, H_scalar.bytes);
+
+ // Compute the number of rounds for the inner-product argument
+ const size_t rounds = pd.logM+logN;
+ CHECK_AND_ASSERT_MES(rounds > 0, false, "Zero rounds");
+
+ const rct::key *challenges_inv = &inverses[pd.inv_offset];
+ const rct::key yinv = inverses[pd.inv_offset + rounds];
+
+ // Compute challenge products
+ challenges_cache.resize(1<<rounds);
+ challenges_cache[0] = challenges_inv[0];
+ challenges_cache[1] = pd.challenges[0];
+ for (size_t j = 1; j < rounds; ++j)
+ {
+ const size_t slots = 1<<(j+1);
+ for (size_t s = slots; s-- > 0; --s)
+ {
+ sc_mul(challenges_cache[s].bytes, challenges_cache[s/2].bytes, pd.challenges[j].bytes);
+ sc_mul(challenges_cache[s-1].bytes, challenges_cache[s/2].bytes, challenges_inv[j].bytes);
+ }
+ }
+
+ // Gi and Hi
+ rct::key e_r1_w_y;
+ sc_mul(e_r1_w_y.bytes, pd.e.bytes, proof.r1.bytes);
+ sc_mul(e_r1_w_y.bytes, e_r1_w_y.bytes, weight.bytes);
+ rct::key e_s1_w;
+ sc_mul(e_s1_w.bytes, pd.e.bytes, proof.s1.bytes);
+ sc_mul(e_s1_w.bytes, e_s1_w.bytes, weight.bytes);
+ rct::key e_squared_z_w;
+ sc_mul(e_squared_z_w.bytes, e_squared.bytes, pd.z.bytes);
+ sc_mul(e_squared_z_w.bytes, e_squared_z_w.bytes, weight.bytes);
+ rct::key minus_e_squared_z_w;
+ sc_sub(minus_e_squared_z_w.bytes, ZERO.bytes, e_squared_z_w.bytes);
+ rct::key minus_e_squared_w_y;
+ sc_sub(minus_e_squared_w_y.bytes, ZERO.bytes, e_squared.bytes);
+ sc_mul(minus_e_squared_w_y.bytes, minus_e_squared_w_y.bytes, weight.bytes);
+ sc_mul(minus_e_squared_w_y.bytes, minus_e_squared_w_y.bytes, y_MN.bytes);
+ for (size_t i = 0; i < MN; ++i)
+ {
+ rct::key g_scalar = copy(e_r1_w_y);
+ rct::key h_scalar;
+
+ // Use the binary decomposition of the index
+ sc_muladd(g_scalar.bytes, g_scalar.bytes, challenges_cache[i].bytes, e_squared_z_w.bytes);
+ sc_muladd(h_scalar.bytes, e_s1_w.bytes, challenges_cache[(~i) & (MN-1)].bytes, minus_e_squared_z_w.bytes);
+
+ // Complete the scalar derivation
+ sc_add(Gi_scalars[i].bytes, Gi_scalars[i].bytes, g_scalar.bytes);
+ sc_muladd(h_scalar.bytes, minus_e_squared_w_y.bytes, d[i].bytes, h_scalar.bytes);
+ sc_add(Hi_scalars[i].bytes, Hi_scalars[i].bytes, h_scalar.bytes);
+
+ // Update iterated values
+ sc_mul(e_r1_w_y.bytes, e_r1_w_y.bytes, yinv.bytes);
+ sc_mul(minus_e_squared_w_y.bytes, minus_e_squared_w_y.bytes, yinv.bytes);
+ }
+
+ // L_j: -weight*e*e*challenges[j]**2
+ // R_j: -weight*e*e*challenges[j]**(-2)
+ for (size_t j = 0; j < rounds; ++j)
+ {
+ sc_mul(temp.bytes, pd.challenges[j].bytes, pd.challenges[j].bytes);
+ sc_mul(temp.bytes, temp.bytes, minus_weight_e_squared.bytes);
+ multiexp_data.emplace_back(temp, proof8_L[j]);
+
+ sc_mul(temp.bytes, challenges_inv[j].bytes, challenges_inv[j].bytes);
+ sc_mul(temp.bytes, temp.bytes, minus_weight_e_squared.bytes);
+ multiexp_data.emplace_back(temp, proof8_R[j]);
+ }
+ }
+
+ // Verify all proofs in the weighted batch
+ multiexp_data.emplace_back(G_scalar, rct::G);
+ multiexp_data.emplace_back(H_scalar, rct::H);
+ for (size_t i = 0; i < maxMN; ++i)
+ {
+ multiexp_data[i * 2] = {Gi_scalars[i], Gi_p3[i]};
+ multiexp_data[i * 2 + 1] = {Hi_scalars[i], Hi_p3[i]};
+ }
+ if (!(multiexp(multiexp_data, 2 * maxMN) == rct::identity()))
+ {
+ MERROR("Verification failure");
+ return false;
+ }
+
+ return true;
+ }
+
+ bool bulletproof_plus_VERIFY(const std::vector<BulletproofPlus> &proofs)
+ {
+ std::vector<const BulletproofPlus*> proof_pointers;
+ proof_pointers.reserve(proofs.size());
+ for (const BulletproofPlus &proof: proofs)
+ proof_pointers.push_back(&proof);
+ return bulletproof_plus_VERIFY(proof_pointers);
+ }
+
+ bool bulletproof_plus_VERIFY(const BulletproofPlus &proof)
+ {
+ std::vector<const BulletproofPlus*> proofs;
+ proofs.push_back(&proof);
+ return bulletproof_plus_VERIFY(proofs);
+ }
+}
diff --git a/src/ringct/bulletproofs_plus.h b/src/ringct/bulletproofs_plus.h
new file mode 100644
index 000000000..d9084075a
--- /dev/null
+++ b/src/ringct/bulletproofs_plus.h
@@ -0,0 +1,49 @@
+// Copyright (c) 2017-2020, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+// conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+// of conditions and the following disclaimer in the documentation and/or other
+// materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+// used to endorse or promote products derived from this software without specific
+// prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+#ifndef BULLETPROOFS_PLUS_H
+#define BULLETPROOFS_PLUS_H
+
+#include "rctTypes.h"
+
+namespace rct
+{
+
+BulletproofPlus bulletproof_plus_PROVE(const rct::key &v, const rct::key &gamma);
+BulletproofPlus bulletproof_plus_PROVE(uint64_t v, const rct::key &gamma);
+BulletproofPlus bulletproof_plus_PROVE(const rct::keyV &v, const rct::keyV &gamma);
+BulletproofPlus bulletproof_plus_PROVE(const std::vector<uint64_t> &v, const rct::keyV &gamma);
+bool bulletproof_plus_VERIFY(const BulletproofPlus &proof);
+bool bulletproof_plus_VERIFY(const std::vector<const BulletproofPlus*> &proofs);
+bool bulletproof_plus_VERIFY(const std::vector<BulletproofPlus> &proofs);
+
+}
+
+#endif
diff --git a/src/ringct/rctSigs.cpp b/src/ringct/rctSigs.cpp
index f5950c53c..d7883baac 100644
--- a/src/ringct/rctSigs.cpp
+++ b/src/ringct/rctSigs.cpp
@@ -35,6 +35,7 @@
#include "common/util.h"
#include "rctSigs.h"
#include "bulletproofs.h"
+#include "bulletproofs_plus.h"
#include "cryptonote_basic/cryptonote_format_utils.h"
#include "cryptonote_config.h"
@@ -78,6 +79,36 @@ namespace
return rct::Bulletproof{rct::keyV(n_outs, I), I, I, I, I, I, I, rct::keyV(nrl, I), rct::keyV(nrl, I), I, I, I};
}
+ rct::BulletproofPlus make_dummy_bulletproof_plus(const std::vector<uint64_t> &outamounts, rct::keyV &C, rct::keyV &masks)
+ {
+ const size_t n_outs = outamounts.size();
+ const rct::key I = rct::identity();
+ size_t nrl = 0;
+ while ((1u << nrl) < n_outs)
+ ++nrl;
+ nrl += 6;
+
+ C.resize(n_outs);
+ masks.resize(n_outs);
+ for (size_t i = 0; i < n_outs; ++i)
+ {
+ masks[i] = I;
+ rct::key sv8, sv;
+ sv = rct::zero();
+ sv.bytes[0] = outamounts[i] & 255;
+ sv.bytes[1] = (outamounts[i] >> 8) & 255;
+ sv.bytes[2] = (outamounts[i] >> 16) & 255;
+ sv.bytes[3] = (outamounts[i] >> 24) & 255;
+ sv.bytes[4] = (outamounts[i] >> 32) & 255;
+ sv.bytes[5] = (outamounts[i] >> 40) & 255;
+ sv.bytes[6] = (outamounts[i] >> 48) & 255;
+ sv.bytes[7] = (outamounts[i] >> 56) & 255;
+ sc_mul(sv8.bytes, sv.bytes, rct::INV_EIGHT.bytes);
+ rct::addKeys2(C[i], rct::INV_EIGHT, sv8, rct::H);
+ }
+
+ return rct::BulletproofPlus{rct::keyV(n_outs, I), I, I, I, I, I, I, rct::keyV(nrl, I), rct::keyV(nrl, I)};
+ }
}
namespace rct {
@@ -107,6 +138,32 @@ namespace rct {
catch (...) { return false; }
}
+ BulletproofPlus proveRangeBulletproofPlus(keyV &C, keyV &masks, const std::vector<uint64_t> &amounts, epee::span<const key> sk, hw::device &hwdev)
+ {
+ CHECK_AND_ASSERT_THROW_MES(amounts.size() == sk.size(), "Invalid amounts/sk sizes");
+ masks.resize(amounts.size());
+ for (size_t i = 0; i < masks.size(); ++i)
+ masks[i] = hwdev.genCommitmentMask(sk[i]);
+ BulletproofPlus proof = bulletproof_plus_PROVE(amounts, masks);
+ CHECK_AND_ASSERT_THROW_MES(proof.V.size() == amounts.size(), "V does not have the expected size");
+ C = proof.V;
+ return proof;
+ }
+
+ bool verBulletproofPlus(const BulletproofPlus &proof)
+ {
+ try { return bulletproof_plus_VERIFY(proof); }
+ // we can get deep throws from ge_frombytes_vartime if input isn't valid
+ catch (...) { return false; }
+ }
+
+ bool verBulletproofPlus(const std::vector<const BulletproofPlus*> &proofs)
+ {
+ try { return bulletproof_plus_VERIFY(proofs); }
+ // we can get deep throws from ge_frombytes_vartime if input isn't valid
+ catch (...) { return false; }
+ }
+
//Borromean (c.f. gmax/andytoshi's paper)
boroSig genBorromean(const key64 x, const key64 P1, const key64 P2, const bits indices) {
key64 L[2], alpha;
@@ -611,6 +668,25 @@ namespace rct {
kv.push_back(p.t);
}
}
+ else if (rv.type == RCTTypeBulletproofPlus)
+ {
+ kv.reserve((6*2+6) * rv.p.bulletproofs_plus.size());
+ for (const auto &p: rv.p.bulletproofs_plus)
+ {
+ // V are not hashed as they're expanded from outPk.mask
+ // (and thus hashed as part of rctSigBase above)
+ kv.push_back(p.A);
+ kv.push_back(p.A1);
+ kv.push_back(p.B);
+ kv.push_back(p.r1);
+ kv.push_back(p.s1);
+ kv.push_back(p.d1);
+ for (size_t n = 0; n < p.L.size(); ++n)
+ kv.push_back(p.L[n]);
+ for (size_t n = 0; n < p.R.size(); ++n)
+ kv.push_back(p.R[n]);
+ }
+ }
else
{
kv.reserve((64*3+1) * rv.p.rangeSigs.size());
@@ -1031,7 +1107,7 @@ namespace rct {
//mask amount and mask
rv.ecdhInfo[i].mask = copy(outSk[i].mask);
rv.ecdhInfo[i].amount = d2h(amounts[i]);
- hwdev.ecdhEncode(rv.ecdhInfo[i], amount_keys[i], rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG);
+ hwdev.ecdhEncode(rv.ecdhInfo[i], amount_keys[i], rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG || rv.type == RCTTypeBulletproofPlus);
}
//set txn fee
@@ -1063,7 +1139,7 @@ namespace rct {
//RCT simple
//for post-rct only
rctSig genRctSimple(const key &message, const ctkeyV & inSk, const keyV & destinations, const vector<xmr_amount> &inamounts, const vector<xmr_amount> &outamounts, xmr_amount txnFee, const ctkeyM & mixRing, const keyV &amount_keys, const std::vector<multisig_kLRki> *kLRki, multisig_out *msout, const std::vector<unsigned int> & index, ctkeyV &outSk, const RCTConfig &rct_config, hw::device &hwdev) {
- const bool bulletproof = rct_config.range_proof_type != RangeProofBorromean;
+ const bool bulletproof_or_plus = rct_config.range_proof_type > RangeProofBorromean;
CHECK_AND_ASSERT_THROW_MES(inamounts.size() > 0, "Empty inamounts");
CHECK_AND_ASSERT_THROW_MES(inamounts.size() == inSk.size(), "Different number of inamounts/inSk");
CHECK_AND_ASSERT_THROW_MES(outamounts.size() == destinations.size(), "Different number of amounts/destinations");
@@ -1079,11 +1155,14 @@ namespace rct {
}
rctSig rv;
- if (bulletproof)
+ if (bulletproof_or_plus)
{
switch (rct_config.bp_version)
{
case 0:
+ case 4:
+ rv.type = RCTTypeBulletproofPlus;
+ break;
case 3:
rv.type = RCTTypeCLSAG;
break;
@@ -1102,7 +1181,7 @@ namespace rct {
rv.message = message;
rv.outPk.resize(destinations.size());
- if (!bulletproof)
+ if (!bulletproof_or_plus)
rv.p.rangeSigs.resize(destinations.size());
rv.ecdhInfo.resize(destinations.size());
@@ -1114,17 +1193,19 @@ namespace rct {
//add destination to sig
rv.outPk[i].dest = copy(destinations[i]);
//compute range proof
- if (!bulletproof)
+ if (!bulletproof_or_plus)
rv.p.rangeSigs[i] = proveRange(rv.outPk[i].mask, outSk[i].mask, outamounts[i]);
#ifdef DBG
- if (!bulletproof)
+ if (!bulletproof_or_plus)
CHECK_AND_ASSERT_THROW_MES(verRange(rv.outPk[i].mask, rv.p.rangeSigs[i]), "verRange failed on newly created proof");
#endif
}
rv.p.bulletproofs.clear();
- if (bulletproof)
+ rv.p.bulletproofs_plus.clear();
+ if (bulletproof_or_plus)
{
+ const bool plus = is_rct_bulletproof_plus(rv.type);
size_t n_amounts = outamounts.size();
size_t amounts_proved = 0;
if (rct_config.range_proof_type == RangeProofPaddedBulletproof)
@@ -1133,19 +1214,31 @@ namespace rct {
if (hwdev.get_mode() == hw::device::TRANSACTION_CREATE_FAKE)
{
// use a fake bulletproof for speed
- rv.p.bulletproofs.push_back(make_dummy_bulletproof(outamounts, C, masks));
+ if (plus)
+ rv.p.bulletproofs_plus.push_back(make_dummy_bulletproof_plus(outamounts, C, masks));
+ else
+ rv.p.bulletproofs.push_back(make_dummy_bulletproof(outamounts, C, masks));
}
else
{
const epee::span<const key> keys{&amount_keys[0], amount_keys.size()};
- rv.p.bulletproofs.push_back(proveRangeBulletproof(C, masks, outamounts, keys, hwdev));
+ if (plus)
+ rv.p.bulletproofs_plus.push_back(proveRangeBulletproofPlus(C, masks, outamounts, keys, hwdev));
+ else
+ rv.p.bulletproofs.push_back(proveRangeBulletproof(C, masks, outamounts, keys, hwdev));
#ifdef DBG
- CHECK_AND_ASSERT_THROW_MES(verBulletproof(rv.p.bulletproofs.back()), "verBulletproof failed on newly created proof");
+ if (plus)
+ CHECK_AND_ASSERT_THROW_MES(verBulletproofPlus(rv.p.bulletproofs_plus.back()), "verBulletproofPlus failed on newly created proof");
+ else
+ CHECK_AND_ASSERT_THROW_MES(verBulletproof(rv.p.bulletproofs.back()), "verBulletproof failed on newly created proof");
#endif
}
for (i = 0; i < outamounts.size(); ++i)
{
- rv.outPk[i].mask = rct::scalarmult8(C[i]);
+ if (plus)
+ rv.outPk[i].mask = C[i];
+ else
+ rv.outPk[i].mask = rct::scalarmult8(C[i]);
outSk[i].mask = masks[i];
}
}
@@ -1153,7 +1246,7 @@ namespace rct {
{
size_t batch_size = 1;
if (rct_config.range_proof_type == RangeProofMultiOutputBulletproof)
- while (batch_size * 2 + amounts_proved <= n_amounts && batch_size * 2 <= BULLETPROOF_MAX_OUTPUTS)
+ while (batch_size * 2 + amounts_proved <= n_amounts && batch_size * 2 <= (plus ? BULLETPROOF_PLUS_MAX_OUTPUTS : BULLETPROOF_MAX_OUTPUTS))
batch_size *= 2;
rct::keyV C, masks;
std::vector<uint64_t> batch_amounts(batch_size);
@@ -1162,19 +1255,31 @@ namespace rct {
if (hwdev.get_mode() == hw::device::TRANSACTION_CREATE_FAKE)
{
// use a fake bulletproof for speed
- rv.p.bulletproofs.push_back(make_dummy_bulletproof(batch_amounts, C, masks));
+ if (plus)
+ rv.p.bulletproofs_plus.push_back(make_dummy_bulletproof_plus(batch_amounts, C, masks));
+ else
+ rv.p.bulletproofs.push_back(make_dummy_bulletproof(batch_amounts, C, masks));
}
else
{
const epee::span<const key> keys{&amount_keys[amounts_proved], batch_size};
- rv.p.bulletproofs.push_back(proveRangeBulletproof(C, masks, batch_amounts, keys, hwdev));
+ if (plus)
+ rv.p.bulletproofs_plus.push_back(proveRangeBulletproofPlus(C, masks, batch_amounts, keys, hwdev));
+ else
+ rv.p.bulletproofs.push_back(proveRangeBulletproof(C, masks, batch_amounts, keys, hwdev));
#ifdef DBG
- CHECK_AND_ASSERT_THROW_MES(verBulletproof(rv.p.bulletproofs.back()), "verBulletproof failed on newly created proof");
+ if (plus)
+ CHECK_AND_ASSERT_THROW_MES(verBulletproofPlus(rv.p.bulletproofs_plus.back()), "verBulletproofPlus failed on newly created proof");
+ else
+ CHECK_AND_ASSERT_THROW_MES(verBulletproof(rv.p.bulletproofs.back()), "verBulletproof failed on newly created proof");
#endif
}
for (i = 0; i < batch_size; ++i)
{
- rv.outPk[i + amounts_proved].mask = rct::scalarmult8(C[i]);
+ if (plus)
+ rv.outPk[i + amounts_proved].mask = C[i];
+ else
+ rv.outPk[i + amounts_proved].mask = rct::scalarmult8(C[i]);
outSk[i + amounts_proved].mask = masks[i];
}
amounts_proved += batch_size;
@@ -1189,7 +1294,7 @@ namespace rct {
//mask amount and mask
rv.ecdhInfo[i].mask = copy(outSk[i].mask);
rv.ecdhInfo[i].amount = d2h(outamounts[i]);
- hwdev.ecdhEncode(rv.ecdhInfo[i], amount_keys[i], rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG);
+ hwdev.ecdhEncode(rv.ecdhInfo[i], amount_keys[i], rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG || rv.type == RCTTypeBulletproofPlus);
}
//set txn fee
@@ -1197,9 +1302,9 @@ namespace rct {
// TODO: unused ??
// key txnFeeKey = scalarmultH(d2h(rv.txnFee));
rv.mixRing = mixRing;
- keyV &pseudoOuts = bulletproof ? rv.p.pseudoOuts : rv.pseudoOuts;
+ keyV &pseudoOuts = bulletproof_or_plus ? rv.p.pseudoOuts : rv.pseudoOuts;
pseudoOuts.resize(inamounts.size());
- if (rv.type == RCTTypeCLSAG)
+ if (is_rct_clsag(rv.type))
rv.p.CLSAGs.resize(inamounts.size());
else
rv.p.MGs.resize(inamounts.size());
@@ -1218,11 +1323,11 @@ namespace rct {
if (msout)
{
msout->c.resize(inamounts.size());
- msout->mu_p.resize(rv.type == RCTTypeCLSAG ? inamounts.size() : 0);
+ msout->mu_p.resize(is_rct_clsag(rv.type) ? inamounts.size() : 0);
}
for (i = 0 ; i < inamounts.size(); i++)
{
- if (rv.type == RCTTypeCLSAG)
+ if (is_rct_clsag(rv.type))
{
rv.p.CLSAGs[i] = proveRctCLSAGSimple(full_message, rv.mixRing[i], inSk[i], a[i], pseudoOuts[i], kLRki ? &(*kLRki)[i]: NULL, msout ? &msout->c[i] : NULL, msout ? &msout->mu_p[i] : NULL, index[i], hwdev);
}
@@ -1328,20 +1433,25 @@ namespace rct {
tools::threadpool& tpool = tools::threadpool::getInstance();
tools::threadpool::waiter waiter(tpool);
std::deque<bool> results;
- std::vector<const Bulletproof*> proofs;
+ std::vector<const Bulletproof*> bp_proofs;
+ std::vector<const BulletproofPlus*> bpp_proofs;
size_t max_non_bp_proofs = 0, offset = 0;
for (const rctSig *rvp: rvv)
{
CHECK_AND_ASSERT_MES(rvp, false, "rctSig pointer is NULL");
const rctSig &rv = *rvp;
- CHECK_AND_ASSERT_MES(rv.type == RCTTypeSimple || rv.type == RCTTypeBulletproof || rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG,
+ CHECK_AND_ASSERT_MES(rv.type == RCTTypeSimple || rv.type == RCTTypeBulletproof || rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG || rv.type == RCTTypeBulletproofPlus,
false, "verRctSemanticsSimple called on non simple rctSig");
const bool bulletproof = is_rct_bulletproof(rv.type);
- if (bulletproof)
+ const bool bulletproof_plus = is_rct_bulletproof_plus(rv.type);
+ if (bulletproof || bulletproof_plus)
{
- CHECK_AND_ASSERT_MES(rv.outPk.size() == n_bulletproof_amounts(rv.p.bulletproofs), false, "Mismatched sizes of outPk and bulletproofs");
- if (rv.type == RCTTypeCLSAG)
+ if (bulletproof_plus)
+ CHECK_AND_ASSERT_MES(rv.outPk.size() == n_bulletproof_plus_amounts(rv.p.bulletproofs_plus), false, "Mismatched sizes of outPk and bulletproofs_plus");
+ else
+ CHECK_AND_ASSERT_MES(rv.outPk.size() == n_bulletproof_amounts(rv.p.bulletproofs), false, "Mismatched sizes of outPk and bulletproofs");
+ if (is_rct_clsag(rv.type))
{
CHECK_AND_ASSERT_MES(rv.p.MGs.empty(), false, "MGs are not empty for CLSAG");
CHECK_AND_ASSERT_MES(rv.p.pseudoOuts.size() == rv.p.CLSAGs.size(), false, "Mismatched sizes of rv.p.pseudoOuts and rv.p.CLSAGs");
@@ -1361,7 +1471,7 @@ namespace rct {
}
CHECK_AND_ASSERT_MES(rv.outPk.size() == rv.ecdhInfo.size(), false, "Mismatched sizes of outPk and rv.ecdhInfo");
- if (!bulletproof)
+ if (!bulletproof && !bulletproof_plus)
max_non_bp_proofs += rv.p.rangeSigs.size();
}
@@ -1371,11 +1481,15 @@ namespace rct {
const rctSig &rv = *rvp;
const bool bulletproof = is_rct_bulletproof(rv.type);
- const keyV &pseudoOuts = bulletproof ? rv.p.pseudoOuts : rv.pseudoOuts;
+ const bool bulletproof_plus = is_rct_bulletproof_plus(rv.type);
+ const keyV &pseudoOuts = bulletproof || bulletproof_plus ? rv.p.pseudoOuts : rv.pseudoOuts;
rct::keyV masks(rv.outPk.size());
for (size_t i = 0; i < rv.outPk.size(); i++) {
- masks[i] = rv.outPk[i].mask;
+ if (bulletproof_plus)
+ masks[i] = rct::scalarmult8(rv.outPk[i].mask);
+ else
+ masks[i] = rv.outPk[i].mask;
}
key sumOutpks = addKeys(masks);
DP(sumOutpks);
@@ -1391,10 +1505,15 @@ namespace rct {
return false;
}
- if (bulletproof)
+ if (bulletproof_plus)
+ {
+ for (size_t i = 0; i < rv.p.bulletproofs_plus.size(); i++)
+ bpp_proofs.push_back(&rv.p.bulletproofs_plus[i]);
+ }
+ else if (bulletproof)
{
for (size_t i = 0; i < rv.p.bulletproofs.size(); i++)
- proofs.push_back(&rv.p.bulletproofs[i]);
+ bp_proofs.push_back(&rv.p.bulletproofs[i]);
}
else
{
@@ -1403,9 +1522,18 @@ namespace rct {
offset += rv.p.rangeSigs.size();
}
}
- if (!proofs.empty() && !verBulletproof(proofs))
+ if (!bpp_proofs.empty() && !verBulletproofPlus(bpp_proofs))
+ {
+ LOG_PRINT_L1("Aggregate range proof verified failed");
+ if (!waiter.wait())
+ return false;
+ return false;
+ }
+ if (!bp_proofs.empty() && !verBulletproof(bp_proofs))
{
LOG_PRINT_L1("Aggregate range proof verified failed");
+ if (!waiter.wait())
+ return false;
return false;
}
@@ -1445,11 +1573,12 @@ namespace rct {
{
PERF_TIMER(verRctNonSemanticsSimple);
- CHECK_AND_ASSERT_MES(rv.type == RCTTypeSimple || rv.type == RCTTypeBulletproof || rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG,
+ CHECK_AND_ASSERT_MES(rv.type == RCTTypeSimple || rv.type == RCTTypeBulletproof || rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG || rv.type == RCTTypeBulletproofPlus,
false, "verRctNonSemanticsSimple called on non simple rctSig");
const bool bulletproof = is_rct_bulletproof(rv.type);
+ const bool bulletproof_plus = is_rct_bulletproof_plus(rv.type);
// semantics check is early, and mixRing/MGs aren't resolved yet
- if (bulletproof)
+ if (bulletproof || bulletproof_plus)
CHECK_AND_ASSERT_MES(rv.p.pseudoOuts.size() == rv.mixRing.size(), false, "Mismatched sizes of rv.p.pseudoOuts and mixRing");
else
CHECK_AND_ASSERT_MES(rv.pseudoOuts.size() == rv.mixRing.size(), false, "Mismatched sizes of rv.pseudoOuts and mixRing");
@@ -1460,7 +1589,7 @@ namespace rct {
tools::threadpool& tpool = tools::threadpool::getInstance();
tools::threadpool::waiter waiter(tpool);
- const keyV &pseudoOuts = bulletproof ? rv.p.pseudoOuts : rv.pseudoOuts;
+ const keyV &pseudoOuts = bulletproof || bulletproof_plus ? rv.p.pseudoOuts : rv.pseudoOuts;
const key message = get_pre_mlsag_hash(rv, hw::get_device("default"));
@@ -1468,10 +1597,8 @@ namespace rct {
results.resize(rv.mixRing.size());
for (size_t i = 0 ; i < rv.mixRing.size() ; i++) {
tpool.submit(&waiter, [&, i] {
- if (rv.type == RCTTypeCLSAG)
- {
+ if (is_rct_clsag(rv.type))
results[i] = verRctCLSAGSimple(message, rv.p.CLSAGs[i], rv.mixRing[i], pseudoOuts[i]);
- }
else
results[i] = verRctMGSimple(message, rv.p.MGs[i], rv.mixRing[i], pseudoOuts[i]);
});
@@ -1518,10 +1645,12 @@ namespace rct {
//mask amount and mask
ecdhTuple ecdh_info = rv.ecdhInfo[i];
- hwdev.ecdhDecode(ecdh_info, sk, rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG);
+ hwdev.ecdhDecode(ecdh_info, sk, rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG || rv.type == RCTTypeBulletproofPlus);
mask = ecdh_info.mask;
key amount = ecdh_info.amount;
key C = rv.outPk[i].mask;
+ if (is_rct_bulletproof_plus(rv.type))
+ C = scalarmult8(C);
DP("C");
DP(C);
key Ctmp;
@@ -1542,16 +1671,19 @@ namespace rct {
}
xmr_amount decodeRctSimple(const rctSig & rv, const key & sk, unsigned int i, key &mask, hw::device &hwdev) {
- CHECK_AND_ASSERT_MES(rv.type == RCTTypeSimple || rv.type == RCTTypeBulletproof || rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG, false, "decodeRct called on non simple rctSig");
+ CHECK_AND_ASSERT_MES(rv.type == RCTTypeSimple || rv.type == RCTTypeBulletproof || rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG || rv.type == RCTTypeBulletproofPlus,
+ false, "decodeRct called on non simple rctSig");
CHECK_AND_ASSERT_THROW_MES(i < rv.ecdhInfo.size(), "Bad index");
CHECK_AND_ASSERT_THROW_MES(rv.outPk.size() == rv.ecdhInfo.size(), "Mismatched sizes of rv.outPk and rv.ecdhInfo");
//mask amount and mask
ecdhTuple ecdh_info = rv.ecdhInfo[i];
- hwdev.ecdhDecode(ecdh_info, sk, rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG);
+ hwdev.ecdhDecode(ecdh_info, sk, rv.type == RCTTypeBulletproof2 || rv.type == RCTTypeCLSAG || rv.type == RCTTypeBulletproofPlus);
mask = ecdh_info.mask;
key amount = ecdh_info.amount;
key C = rv.outPk[i].mask;
+ if (is_rct_bulletproof_plus(rv.type))
+ C = scalarmult8(C);
DP("C");
DP(C);
key Ctmp;
@@ -1574,6 +1706,7 @@ namespace rct {
bool signMultisigMLSAG(rctSig &rv, const std::vector<unsigned int> &indices, const keyV &k, const multisig_out &msout, const key &secret_key) {
CHECK_AND_ASSERT_MES(rv.type == RCTTypeFull || rv.type == RCTTypeSimple || rv.type == RCTTypeBulletproof || rv.type == RCTTypeBulletproof2,
false, "unsupported rct type");
+ CHECK_AND_ASSERT_MES(!is_rct_clsag(rv.type), false, "CLSAG signature type in MLSAG signature function");
CHECK_AND_ASSERT_MES(indices.size() == k.size(), false, "Mismatched k/indices sizes");
CHECK_AND_ASSERT_MES(k.size() == rv.p.MGs.size(), false, "Mismatched k/MGs size");
CHECK_AND_ASSERT_MES(k.size() == msout.c.size(), false, "Mismatched k/msout.c size");
@@ -1598,7 +1731,7 @@ namespace rct {
}
bool signMultisigCLSAG(rctSig &rv, const std::vector<unsigned int> &indices, const keyV &k, const multisig_out &msout, const key &secret_key) {
- CHECK_AND_ASSERT_MES(rv.type == RCTTypeCLSAG, false, "unsupported rct type");
+ CHECK_AND_ASSERT_MES(is_rct_clsag(rv.type), false, "unsupported rct type");
CHECK_AND_ASSERT_MES(indices.size() == k.size(), false, "Mismatched k/indices sizes");
CHECK_AND_ASSERT_MES(k.size() == rv.p.CLSAGs.size(), false, "Mismatched k/CLSAGs size");
CHECK_AND_ASSERT_MES(k.size() == msout.c.size(), false, "Mismatched k/msout.c size");
@@ -1620,7 +1753,7 @@ namespace rct {
}
bool signMultisig(rctSig &rv, const std::vector<unsigned int> &indices, const keyV &k, const multisig_out &msout, const key &secret_key) {
- if (rv.type == RCTTypeCLSAG)
+ if (is_rct_clsag(rv.type))
return signMultisigCLSAG(rv, indices, k, msout, secret_key);
else
return signMultisigMLSAG(rv, indices, k, msout, secret_key);
diff --git a/src/ringct/rctTypes.cpp b/src/ringct/rctTypes.cpp
index 1f674056d..c22b0524f 100644
--- a/src/ringct/rctTypes.cpp
+++ b/src/ringct/rctTypes.cpp
@@ -196,6 +196,7 @@ namespace rct {
case RCTTypeBulletproof:
case RCTTypeBulletproof2:
case RCTTypeCLSAG:
+ case RCTTypeBulletproofPlus:
return true;
default:
return false;
@@ -215,6 +216,17 @@ namespace rct {
}
}
+ bool is_rct_bulletproof_plus(int type)
+ {
+ switch (type)
+ {
+ case RCTTypeBulletproofPlus:
+ return true;
+ default:
+ return false;
+ }
+ }
+
bool is_rct_borromean(int type)
{
switch (type)
@@ -227,19 +239,34 @@ namespace rct {
}
}
- size_t n_bulletproof_amounts(const Bulletproof &proof)
+ bool is_rct_clsag(int type)
{
- CHECK_AND_ASSERT_MES(proof.L.size() >= 6, 0, "Invalid bulletproof L size");
- CHECK_AND_ASSERT_MES(proof.L.size() == proof.R.size(), 0, "Mismatched bulletproof L/R size");
+ switch (type)
+ {
+ case RCTTypeCLSAG:
+ case RCTTypeBulletproofPlus:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ static size_t n_bulletproof_amounts_base(const size_t L_size, const size_t R_size, const size_t V_size, const size_t max_outputs)
+ {
+ CHECK_AND_ASSERT_MES(L_size >= 6, 0, "Invalid bulletproof L size");
+ CHECK_AND_ASSERT_MES(L_size == R_size, 0, "Mismatched bulletproof L/R size");
static const size_t extra_bits = 4;
- static_assert((1 << extra_bits) == BULLETPROOF_MAX_OUTPUTS, "log2(BULLETPROOF_MAX_OUTPUTS) is out of date");
- CHECK_AND_ASSERT_MES(proof.L.size() <= 6 + extra_bits, 0, "Invalid bulletproof L size");
- CHECK_AND_ASSERT_MES(proof.V.size() <= (1u<<(proof.L.size()-6)), 0, "Invalid bulletproof V/L");
- CHECK_AND_ASSERT_MES(proof.V.size() * 2 > (1u<<(proof.L.size()-6)), 0, "Invalid bulletproof V/L");
- CHECK_AND_ASSERT_MES(proof.V.size() > 0, 0, "Empty bulletproof");
- return proof.V.size();
+ CHECK_AND_ASSERT_MES((1 << extra_bits) == max_outputs, 0, "log2(max_outputs) is out of date");
+ CHECK_AND_ASSERT_MES(L_size <= 6 + extra_bits, 0, "Invalid bulletproof L size");
+ CHECK_AND_ASSERT_MES(V_size <= (1u<<(L_size-6)), 0, "Invalid bulletproof V/L");
+ CHECK_AND_ASSERT_MES(V_size * 2 > (1u<<(L_size-6)), 0, "Invalid bulletproof V/L");
+ CHECK_AND_ASSERT_MES(V_size > 0, 0, "Empty bulletproof");
+ return V_size;
}
+ size_t n_bulletproof_amounts(const Bulletproof &proof) { return n_bulletproof_amounts_base(proof.L.size(), proof.R.size(), proof.V.size(), BULLETPROOF_MAX_OUTPUTS); }
+ size_t n_bulletproof_plus_amounts(const BulletproofPlus &proof) { return n_bulletproof_amounts_base(proof.L.size(), proof.R.size(), proof.V.size(), BULLETPROOF_PLUS_MAX_OUTPUTS); }
+
size_t n_bulletproof_amounts(const std::vector<Bulletproof> &proofs)
{
size_t n = 0;
@@ -254,15 +281,31 @@ namespace rct {
return n;
}
- size_t n_bulletproof_max_amounts(const Bulletproof &proof)
+ size_t n_bulletproof_plus_amounts(const std::vector<BulletproofPlus> &proofs)
+ {
+ size_t n = 0;
+ for (const BulletproofPlus &proof: proofs)
+ {
+ size_t n2 = n_bulletproof_plus_amounts(proof);
+ CHECK_AND_ASSERT_MES(n2 < std::numeric_limits<uint32_t>::max() - n, 0, "Invalid number of bulletproofs");
+ if (n2 == 0)
+ return 0;
+ n += n2;
+ }
+ return n;
+ }
+
+ static size_t n_bulletproof_max_amounts_base(size_t L_size, size_t R_size, size_t max_outputs)
{
- CHECK_AND_ASSERT_MES(proof.L.size() >= 6, 0, "Invalid bulletproof L size");
- CHECK_AND_ASSERT_MES(proof.L.size() == proof.R.size(), 0, "Mismatched bulletproof L/R size");
+ CHECK_AND_ASSERT_MES(L_size >= 6, 0, "Invalid bulletproof L size");
+ CHECK_AND_ASSERT_MES(L_size == R_size, 0, "Mismatched bulletproof L/R size");
static const size_t extra_bits = 4;
- static_assert((1 << extra_bits) == BULLETPROOF_MAX_OUTPUTS, "log2(BULLETPROOF_MAX_OUTPUTS) is out of date");
- CHECK_AND_ASSERT_MES(proof.L.size() <= 6 + extra_bits, 0, "Invalid bulletproof L size");
- return 1 << (proof.L.size() - 6);
+ CHECK_AND_ASSERT_MES((1 << extra_bits) == max_outputs, 0, "log2(max_outputs) is out of date");
+ CHECK_AND_ASSERT_MES(L_size <= 6 + extra_bits, 0, "Invalid bulletproof L size");
+ return 1 << (L_size - 6);
}
+ size_t n_bulletproof_max_amounts(const Bulletproof &proof) { return n_bulletproof_max_amounts_base(proof.L.size(), proof.R.size(), BULLETPROOF_MAX_OUTPUTS); }
+ size_t n_bulletproof_plus_max_amounts(const BulletproofPlus &proof) { return n_bulletproof_max_amounts_base(proof.L.size(), proof.R.size(), BULLETPROOF_PLUS_MAX_OUTPUTS); }
size_t n_bulletproof_max_amounts(const std::vector<Bulletproof> &proofs)
{
@@ -278,4 +321,18 @@ namespace rct {
return n;
}
+ size_t n_bulletproof_plus_max_amounts(const std::vector<BulletproofPlus> &proofs)
+ {
+ size_t n = 0;
+ for (const BulletproofPlus &proof: proofs)
+ {
+ size_t n2 = n_bulletproof_plus_max_amounts(proof);
+ CHECK_AND_ASSERT_MES(n2 < std::numeric_limits<uint32_t>::max() - n, 0, "Invalid number of bulletproofs");
+ if (n2 == 0)
+ return 0;
+ n += n2;
+ }
+ return n;
+ }
+
}
diff --git a/src/ringct/rctTypes.h b/src/ringct/rctTypes.h
index 278ff4164..59ed4d6a6 100644
--- a/src/ringct/rctTypes.h
+++ b/src/ringct/rctTypes.h
@@ -238,11 +238,48 @@ namespace rct {
END_SERIALIZE()
};
+ struct BulletproofPlus
+ {
+ rct::keyV V;
+ rct::key A, A1, B;
+ rct::key r1, s1, d1;
+ rct::keyV L, R;
+
+ BulletproofPlus() {}
+ BulletproofPlus(const rct::key &V, const rct::key &A, const rct::key &A1, const rct::key &B, const rct::key &r1, const rct::key &s1, const rct::key &d1, const rct::keyV &L, const rct::keyV &R):
+ V({V}), A(A), A1(A1), B(B), r1(r1), s1(s1), d1(d1), L(L), R(R) {}
+ BulletproofPlus(const rct::keyV &V, const rct::key &A, const rct::key &A1, const rct::key &B, const rct::key &r1, const rct::key &s1, const rct::key &d1, const rct::keyV &L, const rct::keyV &R):
+ V(V), A(A), A1(A1), B(B), r1(r1), s1(s1), d1(d1), L(L), R(R) {}
+
+ bool operator==(const BulletproofPlus &other) const { return V == other.V && A == other.A && A1 == other.A1 && B == other.B && r1 == other.r1 && s1 == other.s1 && d1 == other.d1 && L == other.L && R == other.R; }
+
+ BEGIN_SERIALIZE_OBJECT()
+ // Commitments aren't saved, they're restored via outPk
+ // FIELD(V)
+ FIELD(A)
+ FIELD(A1)
+ FIELD(B)
+ FIELD(r1)
+ FIELD(s1)
+ FIELD(d1)
+ FIELD(L)
+ FIELD(R)
+
+ if (L.empty() || L.size() != R.size())
+ return false;
+ END_SERIALIZE()
+ };
+
size_t n_bulletproof_amounts(const Bulletproof &proof);
size_t n_bulletproof_max_amounts(const Bulletproof &proof);
size_t n_bulletproof_amounts(const std::vector<Bulletproof> &proofs);
size_t n_bulletproof_max_amounts(const std::vector<Bulletproof> &proofs);
+ size_t n_bulletproof_plus_amounts(const BulletproofPlus &proof);
+ size_t n_bulletproof_plus_max_amounts(const BulletproofPlus &proof);
+ size_t n_bulletproof_plus_amounts(const std::vector<BulletproofPlus> &proofs);
+ size_t n_bulletproof_plus_max_amounts(const std::vector<BulletproofPlus> &proofs);
+
//A container to hold all signatures necessary for RingCT
// rangeSigs holds all the rangeproof data of a transaction
// MG holds the MLSAG signature of a transaction
@@ -257,6 +294,7 @@ namespace rct {
RCTTypeBulletproof = 3,
RCTTypeBulletproof2 = 4,
RCTTypeCLSAG = 5,
+ RCTTypeBulletproofPlus = 6,
};
enum RangeProofType { RangeProofBorromean, RangeProofBulletproof, RangeProofMultiOutputBulletproof, RangeProofPaddedBulletproof };
struct RCTConfig {
@@ -285,7 +323,7 @@ namespace rct {
FIELD(type)
if (type == RCTTypeNull)
return ar.good();
- if (type != RCTTypeFull && type != RCTTypeSimple && type != RCTTypeBulletproof && type != RCTTypeBulletproof2 && type != RCTTypeCLSAG)
+ if (type != RCTTypeFull && type != RCTTypeSimple && type != RCTTypeBulletproof && type != RCTTypeBulletproof2 && type != RCTTypeCLSAG && type != RCTTypeBulletproofPlus)
return false;
VARINT_FIELD(txnFee)
// inputs/outputs not saved, only here for serialization help
@@ -314,7 +352,7 @@ namespace rct {
return false;
for (size_t i = 0; i < outputs; ++i)
{
- if (type == RCTTypeBulletproof2 || type == RCTTypeCLSAG)
+ if (type == RCTTypeBulletproof2 || type == RCTTypeCLSAG || type == RCTTypeBulletproofPlus)
{
ar.begin_object();
if (!typename Archive<W>::is_saving())
@@ -360,6 +398,7 @@ namespace rct {
struct rctSigPrunable {
std::vector<rangeSig> rangeSigs;
std::vector<Bulletproof> bulletproofs;
+ std::vector<BulletproofPlus> bulletproofs_plus;
std::vector<mgSig> MGs; // simple rct has N, full has 1
std::vector<clsag> CLSAGs;
keyV pseudoOuts; //C - for simple rct
@@ -376,9 +415,28 @@ namespace rct {
return false;
if (type == RCTTypeNull)
return ar.good();
- if (type != RCTTypeFull && type != RCTTypeSimple && type != RCTTypeBulletproof && type != RCTTypeBulletproof2 && type != RCTTypeCLSAG)
+ if (type != RCTTypeFull && type != RCTTypeSimple && type != RCTTypeBulletproof && type != RCTTypeBulletproof2 && type != RCTTypeCLSAG && type != RCTTypeBulletproofPlus)
return false;
- if (type == RCTTypeBulletproof || type == RCTTypeBulletproof2 || type == RCTTypeCLSAG)
+ if (type == RCTTypeBulletproofPlus)
+ {
+ uint32_t nbp = bulletproofs_plus.size();
+ VARINT_FIELD(nbp)
+ ar.tag("bpp");
+ ar.begin_array();
+ if (nbp > outputs)
+ return false;
+ PREPARE_CUSTOM_VECTOR_SERIALIZATION(nbp, bulletproofs_plus);
+ for (size_t i = 0; i < nbp; ++i)
+ {
+ FIELDS(bulletproofs_plus[i])
+ if (nbp - i > 1)
+ ar.delimit_array();
+ }
+ if (n_bulletproof_plus_max_amounts(bulletproofs_plus) < outputs)
+ return false;
+ ar.end_array();
+ }
+ else if (type == RCTTypeBulletproof || type == RCTTypeBulletproof2 || type == RCTTypeCLSAG)
{
uint32_t nbp = bulletproofs.size();
if (type == RCTTypeBulletproof2 || type == RCTTypeCLSAG)
@@ -416,7 +474,7 @@ namespace rct {
ar.end_array();
}
- if (type == RCTTypeCLSAG)
+ if (type == RCTTypeCLSAG || type == RCTTypeBulletproofPlus)
{
ar.tag("CLSAGs");
ar.begin_array();
@@ -507,7 +565,7 @@ namespace rct {
}
ar.end_array();
}
- if (type == RCTTypeBulletproof || type == RCTTypeBulletproof2 || type == RCTTypeCLSAG)
+ if (type == RCTTypeBulletproof || type == RCTTypeBulletproof2 || type == RCTTypeCLSAG || type == RCTTypeBulletproofPlus)
{
ar.tag("pseudoOuts");
ar.begin_array();
@@ -528,6 +586,7 @@ namespace rct {
BEGIN_SERIALIZE_OBJECT()
FIELD(rangeSigs)
FIELD(bulletproofs)
+ FIELD(bulletproofs_plus)
FIELD(MGs)
FIELD(CLSAGs)
FIELD(pseudoOuts)
@@ -538,12 +597,12 @@ namespace rct {
keyV& get_pseudo_outs()
{
- return type == RCTTypeBulletproof || type == RCTTypeBulletproof2 || type == RCTTypeCLSAG ? p.pseudoOuts : pseudoOuts;
+ return type == RCTTypeBulletproof || type == RCTTypeBulletproof2 || type == RCTTypeCLSAG || type == RCTTypeBulletproofPlus ? p.pseudoOuts : pseudoOuts;
}
keyV const& get_pseudo_outs() const
{
- return type == RCTTypeBulletproof || type == RCTTypeBulletproof2 || type == RCTTypeCLSAG ? p.pseudoOuts : pseudoOuts;
+ return type == RCTTypeBulletproof || type == RCTTypeBulletproof2 || type == RCTTypeCLSAG || type == RCTTypeBulletproofPlus ? p.pseudoOuts : pseudoOuts;
}
BEGIN_SERIALIZE_OBJECT()
@@ -655,7 +714,9 @@ namespace rct {
bool is_rct_simple(int type);
bool is_rct_bulletproof(int type);
+ bool is_rct_bulletproof_plus(int type);
bool is_rct_borromean(int type);
+ bool is_rct_clsag(int type);
static inline const rct::key &pk2rct(const crypto::public_key &pk) { return (const rct::key&)pk; }
static inline const rct::key &sk2rct(const crypto::secret_key &sk) { return (const rct::key&)sk; }
@@ -711,6 +772,7 @@ VARIANT_TAG(debug_archive, rct::Bulletproof, "rct::bulletproof");
VARIANT_TAG(debug_archive, rct::multisig_kLRki, "rct::multisig_kLRki");
VARIANT_TAG(debug_archive, rct::multisig_out, "rct::multisig_out");
VARIANT_TAG(debug_archive, rct::clsag, "rct::clsag");
+VARIANT_TAG(debug_archive, rct::BulletproofPlus, "rct::bulletproof_plus");
VARIANT_TAG(binary_archive, rct::key, 0x90);
VARIANT_TAG(binary_archive, rct::key64, 0x91);
@@ -728,6 +790,7 @@ VARIANT_TAG(binary_archive, rct::Bulletproof, 0x9c);
VARIANT_TAG(binary_archive, rct::multisig_kLRki, 0x9d);
VARIANT_TAG(binary_archive, rct::multisig_out, 0x9e);
VARIANT_TAG(binary_archive, rct::clsag, 0x9f);
+VARIANT_TAG(binary_archive, rct::BulletproofPlus, 0xa0);
VARIANT_TAG(json_archive, rct::key, "rct_key");
VARIANT_TAG(json_archive, rct::key64, "rct_key64");
@@ -745,5 +808,6 @@ VARIANT_TAG(json_archive, rct::Bulletproof, "rct_bulletproof");
VARIANT_TAG(json_archive, rct::multisig_kLRki, "rct_multisig_kLR");
VARIANT_TAG(json_archive, rct::multisig_out, "rct_multisig_out");
VARIANT_TAG(json_archive, rct::clsag, "rct_clsag");
+VARIANT_TAG(json_archive, rct::BulletproofPlus, "rct_bulletproof_plus");
#endif /* RCTTYPES_H */
diff --git a/src/serialization/json_object.cpp b/src/serialization/json_object.cpp
index b03da1edc..bd715dcfd 100644
--- a/src/serialization/json_object.cpp
+++ b/src/serialization/json_object.cpp
@@ -300,7 +300,7 @@ void fromJsonValue(const rapidjson::Value& val, cryptonote::transaction& tx)
}
const auto& rsig = tx.rct_signatures;
- if (!cryptonote::is_coinbase(tx) && rsig.p.bulletproofs.empty() && rsig.p.rangeSigs.empty() && rsig.p.MGs.empty() && rsig.get_pseudo_outs().empty() && sigs == val.MemberEnd())
+ if (!cryptonote::is_coinbase(tx) && rsig.p.bulletproofs.empty() && rsig.p.bulletproofs_plus.empty() && rsig.p.rangeSigs.empty() && rsig.p.MGs.empty() && rsig.get_pseudo_outs().empty() && sigs == val.MemberEnd())
tx.pruned = true;
}
@@ -1100,13 +1100,14 @@ void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const rct::rctSig&
}
// prunable
- if (!sig.p.bulletproofs.empty() || !sig.p.rangeSigs.empty() || !sig.p.MGs.empty() || !sig.get_pseudo_outs().empty())
+ if (!sig.p.bulletproofs.empty() || !sig.p.bulletproofs_plus.empty() || !sig.p.rangeSigs.empty() || !sig.p.MGs.empty() || !sig.get_pseudo_outs().empty())
{
dest.Key("prunable");
dest.StartObject();
INSERT_INTO_JSON_OBJECT(dest, range_proofs, sig.p.rangeSigs);
INSERT_INTO_JSON_OBJECT(dest, bulletproofs, sig.p.bulletproofs);
+ INSERT_INTO_JSON_OBJECT(dest, bulletproofs_plus, sig.p.bulletproofs_plus);
INSERT_INTO_JSON_OBJECT(dest, mlsags, sig.p.MGs);
INSERT_INTO_JSON_OBJECT(dest, pseudo_outs, sig.get_pseudo_outs());
@@ -1141,6 +1142,7 @@ void fromJsonValue(const rapidjson::Value& val, rct::rctSig& sig)
GET_FROM_JSON_OBJECT(prunable->value, sig.p.rangeSigs, range_proofs);
GET_FROM_JSON_OBJECT(prunable->value, sig.p.bulletproofs, bulletproofs);
+ GET_FROM_JSON_OBJECT(prunable->value, sig.p.bulletproofs_plus, bulletproofs_plus);
GET_FROM_JSON_OBJECT(prunable->value, sig.p.MGs, mlsags);
GET_FROM_JSON_OBJECT(prunable->value, pseudo_outs, pseudo_outs);
@@ -1150,6 +1152,7 @@ void fromJsonValue(const rapidjson::Value& val, rct::rctSig& sig)
{
sig.p.rangeSigs.clear();
sig.p.bulletproofs.clear();
+ sig.p.bulletproofs_plus.clear();
sig.p.MGs.clear();
sig.get_pseudo_outs().clear();
}
@@ -1258,6 +1261,41 @@ void fromJsonValue(const rapidjson::Value& val, rct::Bulletproof& p)
GET_FROM_JSON_OBJECT(val, p.t, t);
}
+void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const rct::BulletproofPlus& p)
+{
+ dest.StartObject();
+
+ INSERT_INTO_JSON_OBJECT(dest, V, p.V);
+ INSERT_INTO_JSON_OBJECT(dest, A, p.A);
+ INSERT_INTO_JSON_OBJECT(dest, A1, p.A1);
+ INSERT_INTO_JSON_OBJECT(dest, B, p.B);
+ INSERT_INTO_JSON_OBJECT(dest, r1, p.r1);
+ INSERT_INTO_JSON_OBJECT(dest, s1, p.s1);
+ INSERT_INTO_JSON_OBJECT(dest, d1, p.d1);
+ INSERT_INTO_JSON_OBJECT(dest, L, p.L);
+ INSERT_INTO_JSON_OBJECT(dest, R, p.R);
+
+ dest.EndObject();
+}
+
+void fromJsonValue(const rapidjson::Value& val, rct::BulletproofPlus& p)
+{
+ if (!val.IsObject())
+ {
+ throw WRONG_TYPE("json object");
+ }
+
+ GET_FROM_JSON_OBJECT(val, p.V, V);
+ GET_FROM_JSON_OBJECT(val, p.A, A);
+ GET_FROM_JSON_OBJECT(val, p.A1, A1);
+ GET_FROM_JSON_OBJECT(val, p.B, B);
+ GET_FROM_JSON_OBJECT(val, p.r1, r1);
+ GET_FROM_JSON_OBJECT(val, p.s1, s1);
+ GET_FROM_JSON_OBJECT(val, p.d1, d1);
+ GET_FROM_JSON_OBJECT(val, p.L, L);
+ GET_FROM_JSON_OBJECT(val, p.R, R);
+}
+
void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const rct::boroSig& sig)
{
dest.StartObject();
diff --git a/src/serialization/json_object.h b/src/serialization/json_object.h
index c858faf5a..4514ad568 100644
--- a/src/serialization/json_object.h
+++ b/src/serialization/json_object.h
@@ -292,6 +292,9 @@ void fromJsonValue(const rapidjson::Value& val, rct::rangeSig& sig);
void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const rct::Bulletproof& p);
void fromJsonValue(const rapidjson::Value& val, rct::Bulletproof& p);
+void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const rct::BulletproofPlus& p);
+void fromJsonValue(const rapidjson::Value& val, rct::BulletproofPlus& p);
+
void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const rct::boroSig& sig);
void fromJsonValue(const rapidjson::Value& val, rct::boroSig& sig);
diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index b058619a3..87242b79c 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -1742,6 +1742,7 @@ uint64_t WalletImpl::estimateTransactionFee(const std::vector<std::pair<std::str
extra_size,
m_wallet->use_fork_rules(8, 0),
m_wallet->use_fork_rules(HF_VERSION_CLSAG, 0),
+ m_wallet->use_fork_rules(HF_VERSION_BULLETPROOF_PLUS, 0),
m_wallet->get_base_fee(),
m_wallet->get_fee_multiplier(m_wallet->adjust_priority(static_cast<uint32_t>(priority))),
m_wallet->get_fee_quantization_mask());
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 03106e3e3..f2795b50f 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -781,7 +781,7 @@ void drop_from_short_history(std::list<crypto::hash> &short_chain_history, size_
}
}
-size_t estimate_rct_tx_size(int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag)
+size_t estimate_rct_tx_size(int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag, bool bulletproof_plus)
{
size_t size = 0;
@@ -805,12 +805,12 @@ size_t estimate_rct_tx_size(int n_inputs, int mixin, int n_outputs, size_t extra
size += 1;
// rangeSigs
- if (bulletproof)
+ if (bulletproof || bulletproof_plus)
{
size_t log_padded_outputs = 0;
while ((1<<log_padded_outputs) < n_outputs)
++log_padded_outputs;
- size += (2 * (6 + log_padded_outputs) + 4 + 5) * 32 + 3;
+ size += (2 * (6 + log_padded_outputs) + (bulletproof_plus ? 6 : (4 + 5))) * 32 + 3;
}
else
size += (2*64*32+32+64*32) * n_outputs;
@@ -833,29 +833,29 @@ size_t estimate_rct_tx_size(int n_inputs, int mixin, int n_outputs, size_t extra
// txnFee
size += 4;
- LOG_PRINT_L2("estimated " << (bulletproof ? "bulletproof" : "borromean") << " rct tx size for " << n_inputs << " inputs with ring size " << (mixin+1) << " and " << n_outputs << " outputs: " << size << " (" << ((32 * n_inputs/*+1*/) + 2 * 32 * (mixin+1) * n_inputs + 32 * n_outputs) << " saved)");
+ LOG_PRINT_L2("estimated " << (bulletproof_plus ? "bulletproof plus" : bulletproof ? "bulletproof" : "borromean") << " rct tx size for " << n_inputs << " inputs with ring size " << (mixin+1) << " and " << n_outputs << " outputs: " << size << " (" << ((32 * n_inputs/*+1*/) + 2 * 32 * (mixin+1) * n_inputs + 32 * n_outputs) << " saved)");
return size;
}
-size_t estimate_tx_size(bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag)
+size_t estimate_tx_size(bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag, bool bulletproof_plus)
{
if (use_rct)
- return estimate_rct_tx_size(n_inputs, mixin, n_outputs, extra_size, bulletproof, clsag);
+ return estimate_rct_tx_size(n_inputs, mixin, n_outputs, extra_size, bulletproof, clsag, bulletproof_plus);
else
return n_inputs * (mixin+1) * APPROXIMATE_INPUT_BYTES + extra_size;
}
-uint64_t estimate_tx_weight(bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag)
+uint64_t estimate_tx_weight(bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag, bool bulletproof_plus)
{
- size_t size = estimate_tx_size(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof, clsag);
- if (use_rct && bulletproof && n_outputs > 2)
+ size_t size = estimate_tx_size(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof, clsag, bulletproof_plus);
+ if (use_rct && (bulletproof || bulletproof_plus) && n_outputs > 2)
{
- const uint64_t bp_base = 368;
+ const uint64_t bp_base = (32 * ((bulletproof_plus ? 6 : 9) + 7 * 2)) / 2; // notional size of a 2 output proof, normalized to 1 proof (ie, divided by 2)
size_t log_padded_outputs = 2;
while ((1<<log_padded_outputs) < n_outputs)
++log_padded_outputs;
uint64_t nlr = 2 * (6 + log_padded_outputs);
- const uint64_t bp_size = 32 * (9 + nlr);
+ const uint64_t bp_size = 32 * ((bulletproof_plus ? 6 : 9) + nlr);
const uint64_t bp_clawback = (bp_base * (1<<log_padded_outputs) - bp_size) * 4 / 5;
MDEBUG("clawback on size " << size << ": " << bp_clawback);
size += bp_clawback;
@@ -868,6 +868,11 @@ uint8_t get_bulletproof_fork()
return 8;
}
+uint8_t get_bulletproof_plus_fork()
+{
+ return HF_VERSION_BULLETPROOF_PLUS;
+}
+
uint8_t get_clsag_fork()
{
return HF_VERSION_CLSAG;
@@ -1817,6 +1822,7 @@ static uint64_t decodeRct(const rct::rctSig & rv, const crypto::key_derivation &
case rct::RCTTypeBulletproof:
case rct::RCTTypeBulletproof2:
case rct::RCTTypeCLSAG:
+ case rct::RCTTypeBulletproofPlus:
return rct::decodeRctSimple(rv, rct::sk2rct(scalar1), i, mask, hwdev);
case rct::RCTTypeFull:
return rct::decodeRct(rv, rct::sk2rct(scalar1), i, mask, hwdev);
@@ -7223,16 +7229,16 @@ bool wallet2::sign_multisig_tx_from_file(const std::string &filename, std::vecto
return sign_multisig_tx_to_file(exported_txs, filename, txids);
}
//----------------------------------------------------------------------------------------------------
-uint64_t wallet2::estimate_fee(bool use_per_byte_fee, bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag, uint64_t base_fee, uint64_t fee_multiplier, uint64_t fee_quantization_mask) const
+uint64_t wallet2::estimate_fee(bool use_per_byte_fee, bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag, bool bulletproof_plus, uint64_t base_fee, uint64_t fee_multiplier, uint64_t fee_quantization_mask) const
{
if (use_per_byte_fee)
{
- const size_t estimated_tx_weight = estimate_tx_weight(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof, clsag);
+ const size_t estimated_tx_weight = estimate_tx_weight(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof, clsag, bulletproof_plus);
return calculate_fee_from_weight(base_fee, estimated_tx_weight, fee_multiplier, fee_quantization_mask);
}
else
{
- const size_t estimated_tx_size = estimate_tx_size(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof, clsag);
+ const size_t estimated_tx_size = estimate_tx_size(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof, clsag, bulletproof_plus);
return calculate_fee(base_fee, estimated_tx_size, fee_multiplier);
}
}
@@ -8953,8 +8959,8 @@ void wallet2::transfer_selected_rct(std::vector<cryptonote::tx_destination_entry
ptx.construction_data.unlock_time = unlock_time;
ptx.construction_data.use_rct = true;
ptx.construction_data.rct_config = {
- tx.rct_signatures.p.bulletproofs.empty() ? rct::RangeProofBorromean : rct::RangeProofPaddedBulletproof,
- use_fork_rules(HF_VERSION_CLSAG, -10) ? 3 : use_fork_rules(HF_VERSION_SMALLER_BP, -10) ? 2 : 1
+ rct::RangeProofPaddedBulletproof,
+ use_fork_rules(HF_VERSION_BULLETPROOF_PLUS, -10) ? 4 : 3
};
ptx.construction_data.dests = dsts;
// record which subaddress indices are being used as inputs
@@ -9649,10 +9655,11 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
const bool use_per_byte_fee = use_fork_rules(HF_VERSION_PER_BYTE_FEE, 0);
const bool use_rct = use_fork_rules(4, 0);
const bool bulletproof = use_fork_rules(get_bulletproof_fork(), 0);
+ const bool bulletproof_plus = use_fork_rules(get_bulletproof_plus_fork(), 0);
const bool clsag = use_fork_rules(get_clsag_fork(), 0);
const rct::RCTConfig rct_config {
- bulletproof ? rct::RangeProofPaddedBulletproof : rct::RangeProofBorromean,
- bulletproof ? (use_fork_rules(HF_VERSION_CLSAG, -10) ? 3 : use_fork_rules(HF_VERSION_SMALLER_BP, -10) ? 2 : 1) : 0
+ rct::RangeProofPaddedBulletproof,
+ bulletproof_plus ? 4 : 3
};
const uint64_t base_fee = get_base_fee();
@@ -9688,7 +9695,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
// early out if we know we can't make it anyway
// we could also check for being within FEE_PER_KB, but if the fee calculation
// ever changes, this might be missed, so let this go through
- const uint64_t min_fee = (fee_multiplier * base_fee * estimate_tx_size(use_rct, 1, fake_outs_count, 2, extra.size(), bulletproof, clsag));
+ const uint64_t min_fee = (fee_multiplier * base_fee * estimate_tx_size(use_rct, 1, fake_outs_count, 2, extra.size(), bulletproof, clsag, bulletproof_plus));
uint64_t balance_subtotal = 0;
uint64_t unlocked_balance_subtotal = 0;
for (uint32_t index_minor : subaddr_indices)
@@ -9706,8 +9713,8 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
LOG_PRINT_L2("Candidate subaddress index for spending: " << i);
// determine threshold for fractional amount
- const size_t tx_weight_one_ring = estimate_tx_weight(use_rct, 1, fake_outs_count, 2, 0, bulletproof, clsag);
- const size_t tx_weight_two_rings = estimate_tx_weight(use_rct, 2, fake_outs_count, 2, 0, bulletproof, clsag);
+ const size_t tx_weight_one_ring = estimate_tx_weight(use_rct, 1, fake_outs_count, 2, 0, bulletproof, clsag, bulletproof_plus);
+ const size_t tx_weight_two_rings = estimate_tx_weight(use_rct, 2, fake_outs_count, 2, 0, bulletproof, clsag, bulletproof_plus);
THROW_WALLET_EXCEPTION_IF(tx_weight_one_ring > tx_weight_two_rings, error::wallet_internal_error, "Estimated tx weight with 1 input is larger than with 2 inputs!");
const size_t tx_weight_per_ring = tx_weight_two_rings - tx_weight_one_ring;
const uint64_t fractional_threshold = (fee_multiplier * base_fee * tx_weight_per_ring) / (use_per_byte_fee ? 1 : 1024);
@@ -9804,7 +9811,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
{
// this is used to build a tx that's 1 or 2 inputs, and 2 outputs, which
// will get us a known fee.
- uint64_t estimated_fee = estimate_fee(use_per_byte_fee, use_rct, 2, fake_outs_count, 2, extra.size(), bulletproof, clsag, base_fee, fee_multiplier, fee_quantization_mask);
+ uint64_t estimated_fee = estimate_fee(use_per_byte_fee, use_rct, 2, fake_outs_count, 2, extra.size(), bulletproof, clsag, bulletproof_plus, base_fee, fee_multiplier, fee_quantization_mask);
preferred_inputs = pick_preferred_rct_inputs(needed_money + estimated_fee, subaddr_account, subaddr_indices);
if (!preferred_inputs.empty())
{
@@ -9917,7 +9924,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
}
else
{
- while (!dsts.empty() && dsts[0].amount <= available_amount && estimate_tx_weight(use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, clsag) < TX_WEIGHT_TARGET(upper_transaction_weight_limit))
+ while (!dsts.empty() && dsts[0].amount <= available_amount && estimate_tx_weight(use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, clsag, bulletproof_plus) < TX_WEIGHT_TARGET(upper_transaction_weight_limit))
{
// we can fully pay that destination
LOG_PRINT_L2("We can fully pay " << get_account_address_as_str(m_nettype, dsts[0].is_subaddress, dsts[0].addr) <<
@@ -9934,7 +9941,8 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
++original_output_index;
}
- if (!out_slots_exhausted && available_amount > 0 && !dsts.empty() && estimate_tx_weight(use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, clsag) < TX_WEIGHT_TARGET(upper_transaction_weight_limit)) {
+ if (!out_slots_exhausted && available_amount > 0 && !dsts.empty() &&
+ estimate_tx_weight(use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, clsag, bulletproof_plus) < TX_WEIGHT_TARGET(upper_transaction_weight_limit)) {
// we can partially fill that destination
LOG_PRINT_L2("We can partially pay " << get_account_address_as_str(m_nettype, dsts[0].is_subaddress, dsts[0].addr) <<
" for " << print_money(available_amount) << "/" << print_money(dsts[0].amount));
@@ -9972,7 +9980,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
}
else
{
- const size_t estimated_rct_tx_weight = estimate_tx_weight(use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, clsag);
+ const size_t estimated_rct_tx_weight = estimate_tx_weight(use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, clsag, bulletproof_plus);
try_tx = dsts.empty() || (estimated_rct_tx_weight >= TX_WEIGHT_TARGET(upper_transaction_weight_limit));
THROW_WALLET_EXCEPTION_IF(try_tx && tx.dsts.empty(), error::tx_too_big, estimated_rct_tx_weight, upper_transaction_weight_limit);
}
@@ -9983,7 +9991,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
pending_tx test_ptx;
const size_t num_outputs = get_num_outputs(tx.dsts, m_transfers, tx.selected_transfers);
- needed_fee = estimate_fee(use_per_byte_fee, use_rct ,tx.selected_transfers.size(), fake_outs_count, num_outputs, extra.size(), bulletproof, clsag, base_fee, fee_multiplier, fee_quantization_mask);
+ needed_fee = estimate_fee(use_per_byte_fee, use_rct ,tx.selected_transfers.size(), fake_outs_count, num_outputs, extra.size(), bulletproof, clsag, bulletproof_plus, base_fee, fee_multiplier, fee_quantization_mask);
auto try_carving_from_partial_payment = [&](uint64_t needed_fee, uint64_t available_for_fee)
{
@@ -10243,11 +10251,12 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_all(uint64_t below
// determine threshold for fractional amount
const bool use_per_byte_fee = use_fork_rules(HF_VERSION_PER_BYTE_FEE, 0);
const bool bulletproof = use_fork_rules(get_bulletproof_fork(), 0);
+ const bool bulletproof_plus = use_fork_rules(get_bulletproof_plus_fork(), 0);
const bool clsag = use_fork_rules(get_clsag_fork(), 0);
const uint64_t base_fee = get_base_fee();
const uint64_t fee_multiplier = get_fee_multiplier(priority, get_fee_algorithm());
- const size_t tx_weight_one_ring = estimate_tx_weight(use_rct, 1, fake_outs_count, 2, 0, bulletproof, clsag);
- const size_t tx_weight_two_rings = estimate_tx_weight(use_rct, 2, fake_outs_count, 2, 0, bulletproof, clsag);
+ const size_t tx_weight_one_ring = estimate_tx_weight(use_rct, 1, fake_outs_count, 2, 0, bulletproof, clsag, bulletproof_plus);
+ const size_t tx_weight_two_rings = estimate_tx_weight(use_rct, 2, fake_outs_count, 2, 0, bulletproof, clsag, bulletproof_plus);
THROW_WALLET_EXCEPTION_IF(tx_weight_one_ring > tx_weight_two_rings, error::wallet_internal_error, "Estimated tx weight with 1 input is larger than with 2 inputs!");
const size_t tx_weight_per_ring = tx_weight_two_rings - tx_weight_one_ring;
const uint64_t fractional_threshold = (fee_multiplier * base_fee * tx_weight_per_ring) / (use_per_byte_fee ? 1 : 1024);
@@ -10353,10 +10362,11 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton
const bool use_per_byte_fee = use_fork_rules(HF_VERSION_PER_BYTE_FEE);
const bool use_rct = fake_outs_count > 0 && use_fork_rules(4, 0);
const bool bulletproof = use_fork_rules(get_bulletproof_fork(), 0);
+ const bool bulletproof_plus = use_fork_rules(get_bulletproof_plus_fork(), 0);
const bool clsag = use_fork_rules(get_clsag_fork(), 0);
const rct::RCTConfig rct_config {
- bulletproof ? rct::RangeProofPaddedBulletproof : rct::RangeProofBorromean,
- bulletproof ? (use_fork_rules(HF_VERSION_CLSAG, -10) ? 3 : use_fork_rules(HF_VERSION_SMALLER_BP, -10) ? 2 : 1) : 0,
+ rct::RangeProofPaddedBulletproof,
+ bulletproof_plus ? 4 : 3
};
const uint64_t base_fee = get_base_fee();
const uint64_t fee_multiplier = get_fee_multiplier(priority, get_fee_algorithm());
@@ -10385,7 +10395,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton
uint64_t fee_dust_threshold;
if (use_fork_rules(HF_VERSION_PER_BYTE_FEE))
{
- const uint64_t estimated_tx_weight_with_one_extra_output = estimate_tx_weight(use_rct, tx.selected_transfers.size() + 1, fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, clsag);
+ const uint64_t estimated_tx_weight_with_one_extra_output = estimate_tx_weight(use_rct, tx.selected_transfers.size() + 1, fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, clsag, bulletproof_plus);
fee_dust_threshold = calculate_fee_from_weight(base_fee, estimated_tx_weight_with_one_extra_output, fee_multiplier, fee_quantization_mask);
}
else
@@ -10416,7 +10426,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton
// here, check if we need to sent tx and start a new one
LOG_PRINT_L2("Considering whether to create a tx now, " << tx.selected_transfers.size() << " inputs, tx limit "
<< upper_transaction_weight_limit);
- const size_t estimated_rct_tx_weight = estimate_tx_weight(use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size() + 2, extra.size(), bulletproof, clsag);
+ const size_t estimated_rct_tx_weight = estimate_tx_weight(use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size() + 2, extra.size(), bulletproof, clsag, bulletproof_plus);
bool try_tx = (unused_dust_indices.empty() && unused_transfers_indices.empty()) || ( estimated_rct_tx_weight >= TX_WEIGHT_TARGET(upper_transaction_weight_limit));
if (try_tx) {
@@ -10424,7 +10434,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton
pending_tx test_ptx;
const size_t num_outputs = get_num_outputs(tx.dsts, m_transfers, tx.selected_transfers);
- needed_fee = estimate_fee(use_per_byte_fee, use_rct, tx.selected_transfers.size(), fake_outs_count, num_outputs, extra.size(), bulletproof, clsag, base_fee, fee_multiplier, fee_quantization_mask);
+ needed_fee = estimate_fee(use_per_byte_fee, use_rct, tx.selected_transfers.size(), fake_outs_count, num_outputs, extra.size(), bulletproof, clsag, bulletproof_plus, base_fee, fee_multiplier, fee_quantization_mask);
// add N - 1 outputs for correct initial fee estimation
for (size_t i = 0; i < ((outputs > 1) ? outputs - 1 : outputs); ++i)
@@ -11286,8 +11296,10 @@ void wallet2::check_tx_key_helper(const cryptonote::transaction &tx, const crypt
crypto::secret_key scalar1;
crypto::derivation_to_scalar(found_derivation, n, scalar1);
rct::ecdhTuple ecdh_info = tx.rct_signatures.ecdhInfo[n];
- rct::ecdhDecode(ecdh_info, rct::sk2rct(scalar1), tx.rct_signatures.type == rct::RCTTypeBulletproof2 || tx.rct_signatures.type == rct::RCTTypeCLSAG);
- const rct::key C = tx.rct_signatures.outPk[n].mask;
+ rct::ecdhDecode(ecdh_info, rct::sk2rct(scalar1), tx.rct_signatures.type == rct::RCTTypeBulletproof2 || tx.rct_signatures.type == rct::RCTTypeCLSAG || tx.rct_signatures.type == rct::RCTTypeBulletproofPlus);
+ rct::key C = tx.rct_signatures.outPk[n].mask;
+ if (rct::is_rct_bulletproof_plus(tx.rct_signatures.type))
+ C = rct::scalarmult8(C);
rct::key Ctmp;
THROW_WALLET_EXCEPTION_IF(sc_check(ecdh_info.mask.bytes) != 0, error::wallet_internal_error, "Bad ECDH input mask");
THROW_WALLET_EXCEPTION_IF(sc_check(ecdh_info.amount.bytes) != 0, error::wallet_internal_error, "Bad ECDH input amount");
@@ -11939,7 +11951,7 @@ bool wallet2::check_reserve_proof(const cryptonote::account_public_address &addr
crypto::secret_key shared_secret;
crypto::derivation_to_scalar(derivation, proof.index_in_tx, shared_secret);
rct::ecdhTuple ecdh_info = tx.rct_signatures.ecdhInfo[proof.index_in_tx];
- rct::ecdhDecode(ecdh_info, rct::sk2rct(shared_secret), tx.rct_signatures.type == rct::RCTTypeBulletproof2 || tx.rct_signatures.type == rct::RCTTypeCLSAG);
+ rct::ecdhDecode(ecdh_info, rct::sk2rct(shared_secret), tx.rct_signatures.type == rct::RCTTypeBulletproof2 || tx.rct_signatures.type == rct::RCTTypeCLSAG || tx.rct_signatures.type == rct::RCTTypeBulletproofPlus);
amount = rct::h2d(ecdh_info.amount);
}
total += amount;
@@ -14073,9 +14085,10 @@ std::pair<size_t, uint64_t> wallet2::estimate_tx_size_and_weight(bool use_rct, i
n_outputs = 2; // extra dummy output
const bool bulletproof = use_fork_rules(get_bulletproof_fork(), 0);
+ const bool bulletproof_plus = use_fork_rules(get_bulletproof_plus_fork(), 0);
const bool clsag = use_fork_rules(get_clsag_fork(), 0);
- size_t size = estimate_tx_size(use_rct, n_inputs, ring_size - 1, n_outputs, extra_size, bulletproof, clsag);
- uint64_t weight = estimate_tx_weight(use_rct, n_inputs, ring_size - 1, n_outputs, extra_size, bulletproof, clsag);
+ size_t size = estimate_tx_size(use_rct, n_inputs, ring_size - 1, n_outputs, extra_size, bulletproof, clsag, bulletproof_plus);
+ uint64_t weight = estimate_tx_weight(use_rct, n_inputs, ring_size - 1, n_outputs, extra_size, bulletproof, clsag, bulletproof_plus);
return std::make_pair(size, weight);
}
//----------------------------------------------------------------------------------------------------
diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h
index 51ca6e038..ccf9a96a3 100644
--- a/src/wallet/wallet2.h
+++ b/src/wallet/wallet2.h
@@ -1388,7 +1388,7 @@ private:
std::vector<std::pair<uint64_t, uint64_t>> estimate_backlog(const std::vector<std::pair<double, double>> &fee_levels);
std::vector<std::pair<uint64_t, uint64_t>> estimate_backlog(uint64_t min_tx_weight, uint64_t max_tx_weight, const std::vector<uint64_t> &fees);
- uint64_t estimate_fee(bool use_per_byte_fee, bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag, uint64_t base_fee, uint64_t fee_multiplier, uint64_t fee_quantization_mask) const;
+ uint64_t estimate_fee(bool use_per_byte_fee, bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, bool clsag, bool bulletproof_plus, uint64_t base_fee, uint64_t fee_multiplier, uint64_t fee_quantization_mask) const;
uint64_t get_fee_multiplier(uint32_t priority, int fee_algorithm = -1);
uint64_t get_base_fee();
uint64_t get_fee_quantization_mask();
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 21:17:29 +0000