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Merge pull request #4663

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d6937e37 ringct: use dummy bulletproofs when in fake mode, for speed (moneromooo-monero)
This commit is contained in:
Riccardo Spagni 2018-11-01 22:34:02 +02:00
commit 7d05e6eab3
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GPG key ID: 55432DF31CCD4FCD
4 changed files with 49 additions and 12 deletions
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8
src/device/device.hpp
View file

@ -85,7 +85,7 @@ namespace hw {
public:
device() {}
device(): mode(NONE) {}
device(const device &hwdev) {}
virtual ~device() {}
@ -115,7 +115,8 @@ namespace hw {
virtual bool connect(void) = 0;
virtual bool disconnect(void) = 0;
virtual bool set_mode(device_mode mode) = 0;
virtual bool set_mode(device_mode mode) { this->mode = mode; return true; }
virtual device_mode get_mode() const { return mode; }
virtual device_type get_type() const = 0;
@ -202,6 +203,9 @@ namespace hw {
virtual bool mlsag_sign(const rct::key &c, const rct::keyV &xx, const rct::keyV &alpha, const size_t rows, const size_t dsRows, rct::keyV &ss) = 0;
virtual bool close_tx(void) = 0;
protected:
device_mode mode;
} ;
struct reset_mode {

2
src/device/device_default.cpp
View file

@ -83,7 +83,7 @@ namespace hw {
}
bool device_default::set_mode(device_mode mode) {
return true;
return device::set_mode(mode);
}
/* ======================================================================= */

2
src/device/device_ledger.cpp
View file

@ -396,7 +396,7 @@ namespace hw {
CHECK_AND_ASSERT_THROW_MES(false, " device_ledger::set_mode(unsigned int mode): invalid mode: "<<mode);
}
MDEBUG("Switch to mode: " <<mode);
return true;
return device::set_mode(mode);
}

49
src/ringct/rctSigs.cpp
View file

@ -44,6 +44,19 @@ using namespace std;
#define CHECK_AND_ASSERT_MES_L1(expr, ret, message) {if(!(expr)) {MCERROR("verify", message); return ret;}}
namespace
{
rct::Bulletproof make_dummy_bulletproof(size_t n_outs)
{
const rct::key I = rct::identity();
size_t nrl = 0;
while ((1u << nrl) < n_outs)
++nrl;
nrl += 6;
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};
}
}
namespace rct {
Bulletproof proveRangeBulletproof(key &C, key &mask, uint64_t amount)
{
@ -762,10 +775,20 @@ namespace rct {
if (range_proof_type == RangeProofPaddedBulletproof)
{
rct::keyV C, masks;
rv.p.bulletproofs.push_back(proveRangeBulletproof(C, masks, outamounts));
#ifdef DBG
CHECK_AND_ASSERT_THROW_MES(verBulletproof(rv.p.bulletproofs.back()), "verBulletproof failed on newly created proof");
#endif
if (hwdev.get_mode() == hw::device::TRANSACTION_CREATE_FAKE)
{
// use a fake bulletproof for speed
rv.p.bulletproofs.push_back(make_dummy_bulletproof(outamounts.size()));
C = rct::keyV(outamounts.size(), I);
masks = rct::keyV(outamounts.size(), I);
}
else
{
rv.p.bulletproofs.push_back(proveRangeBulletproof(C, masks, outamounts));
#ifdef DBG
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]);
@ -782,10 +805,20 @@ namespace rct {
std::vector<uint64_t> batch_amounts(batch_size);
for (i = 0; i < batch_size; ++i)
batch_amounts[i] = outamounts[i + amounts_proved];
rv.p.bulletproofs.push_back(proveRangeBulletproof(C, masks, batch_amounts));
#ifdef DBG
CHECK_AND_ASSERT_THROW_MES(verBulletproof(rv.p.bulletproofs.back()), "verBulletproof failed on newly created proof");
#endif
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.size()));
C = rct::keyV(batch_amounts.size(), I);
masks = rct::keyV(batch_amounts.size(), I);
}
else
{
rv.p.bulletproofs.push_back(proveRangeBulletproof(C, masks, batch_amounts));
#ifdef DBG
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]);