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plug bulletproofs plus into consensus

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moneromooo-monero 2020-12-17 11:57:53 +00:00
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28 changed files with 1139 additions and 161 deletions
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14
src/ringct/bulletproofs_plus.cc
View file

@ -65,7 +65,7 @@ namespace rct
// Proof bounds
static constexpr size_t maxN = 64; // maximum number of bits in range
static constexpr size_t maxM = BULLETPROOF_MAX_OUTPUTS; // maximum number of outputs to aggregate into a single proof
static constexpr size_t maxM = BULLETPROOF_PLUS_MAX_OUTPUTS; // maximum number of outputs to aggregate into a single proof
// Cached public generators
static rct::key Hi[maxN*maxM], Gi[maxN*maxM];
@ -796,15 +796,7 @@ try_again:
rct::keyV sv(v.size());
for (size_t i = 0; i < v.size(); ++i)
{
sv[i] = rct::zero();
sv[i].bytes[0] = v[i] & 255;
sv[i].bytes[1] = (v[i] >> 8) & 255;
sv[i].bytes[2] = (v[i] >> 16) & 255;
sv[i].bytes[3] = (v[i] >> 24) & 255;
sv[i].bytes[4] = (v[i] >> 32) & 255;
sv[i].bytes[5] = (v[i] >> 40) & 255;
sv[i].bytes[6] = (v[i] >> 48) & 255;
sv[i].bytes[7] = (v[i] >> 56) & 255;
sv[i] = rct::d2h(v[i]);
}
return bulletproof_plus_PROVE(sv, gamma);
}
@ -836,7 +828,7 @@ try_again:
// 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 * sizeof(proofs)); // maximal size, given the aggregation limit
to_invert.reserve(11 * proofs.size()); // maximal size, given the aggregation limit
for (const BulletproofPlus *p: proofs)
{

200
src/ringct/rctSigs.cpp
View file

@ -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 = rv.type == RCTTypeBulletproofPlus;
size_t n_amounts = outamounts.size();
size_t amounts_proved = 0;
if (rct_config.range_proof_type == RangeProofPaddedBulletproof)
@ -1133,14 +1214,23 @@ 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)
@ -1153,7 +1243,7 @@ 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);
@ -1162,14 +1252,23 @@ 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)
@ -1189,7 +1288,7 @@ 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 +1296,9 @@ 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 +1317,11 @@ 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 +1427,25 @@ 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 +1465,7 @@ 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();
}
@ -1371,7 +1475,8 @@ 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++) {
@ -1391,10 +1496,15 @@ 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 +1513,18 @@ 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 +1564,12 @@ 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 +1580,7 @@ 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 +1588,8 @@ 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]);
});
@ -1518,7 +1636,7 @@ 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;
@ -1542,13 +1660,14 @@ 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;
@ -1574,6 +1693,7 @@ 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 +1718,7 @@ 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 +1740,7 @@ 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);

91
src/ringct/rctTypes.cpp
View file

@ -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");
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();
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;
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;
@ -254,16 +281,32 @@ namespace rct {
return n;
}
size_t n_bulletproof_max_amounts(const Bulletproof &proof)
size_t n_bulletproof_plus_amounts(const std::vector<BulletproofPlus> &proofs)
{
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");
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);
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(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;
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)
{
size_t n = 0;
@ -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;
}
}

51
src/ringct/rctTypes.h
View file

@ -245,8 +245,7 @@ namespace rct {
rct::key r1, s1, d1;
rct::keyV L, R;
BulletproofPlus():
A({}), A1({}), B({}), r1({}), s1({}), d1({}) {}
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):
@ -276,6 +275,11 @@ namespace rct {
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
@ -290,6 +294,7 @@ namespace rct {
RCTTypeBulletproof = 3,
RCTTypeBulletproof2 = 4,
RCTTypeCLSAG = 5,
RCTTypeBulletproofPlus = 6,
};
enum RangeProofType { RangeProofBorromean, RangeProofBulletproof, RangeProofMultiOutputBulletproof, RangeProofPaddedBulletproof };
struct RCTConfig {
@ -318,7 +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
@ -347,7 +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())
@ -393,6 +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
@ -409,9 +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)
@ -449,7 +474,7 @@ namespace rct {
ar.end_array();
}
if (type == RCTTypeCLSAG)
if (type == RCTTypeCLSAG || type == RCTTypeBulletproofPlus)
{
ar.tag("CLSAGs");
ar.begin_array();
@ -540,7 +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();
@ -561,6 +586,7 @@ namespace rct {
BEGIN_SERIALIZE_OBJECT()
FIELD(rangeSigs)
FIELD(bulletproofs)
FIELD(bulletproofs_plus)
FIELD(MGs)
FIELD(CLSAGs)
FIELD(pseudoOuts)
@ -571,12 +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()
@ -688,7 +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; }
@ -744,6 +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);
@ -761,6 +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");
@ -778,5 +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 */