diff options
Diffstat (limited to 'src/ringct/rctSigs.cpp')
| -rw-r--r-- | src/ringct/rctSigs.cpp | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/src/ringct/rctSigs.cpp b/src/ringct/rctSigs.cpp index 5ad785c96..baa649f82 100644 --- a/src/ringct/rctSigs.cpp +++ b/src/ringct/rctSigs.cpp @@ -46,13 +46,34 @@ using namespace std; namespace { - rct::Bulletproof make_dummy_bulletproof(size_t n_outs) + rct::Bulletproof make_dummy_bulletproof(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::Bulletproof{rct::keyV(n_outs, I), I, I, I, I, I, I, rct::keyV(nrl, I), rct::keyV(nrl, I), I, I, I}; } } @@ -769,9 +790,7 @@ 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.size())); - C = rct::keyV(outamounts.size(), I); - masks = rct::keyV(outamounts.size(), I); + rv.p.bulletproofs.push_back(make_dummy_bulletproof(outamounts, C, masks)); } else { @@ -799,9 +818,7 @@ 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.size())); - C = rct::keyV(batch_amounts.size(), I); - masks = rct::keyV(batch_amounts.size(), I); + rv.p.bulletproofs.push_back(make_dummy_bulletproof(batch_amounts, C, masks)); } else { |