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Merge pull request #1218

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3429bfb ringct: thread verRct and verRctSimple (moneromooo-monero)
e06a4da ringct: remove unneeded type conversions (moneromooo-monero)
afc70df ringct: reserve space in vectors to avoid excessive reallocation (moneromooo-monero)
9ebf7b6 ringct: avoid unnecessary memcpy (moneromooo-monero)
1fe75c1 ringct: add a few consts where possible (moneromooo-monero)
ab002a1 ringct: pass vectors by const ref where possible (moneromooo-monero)
This commit is contained in:
Riccardo Spagni 2016-10-22 22:10:01 +02:00
commit 2bb0bdc8b8
No known key found for this signature in database
GPG Key ID: 55432DF31CCD4FCD
4 changed files with 136 additions and 45 deletions
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31
src/ringct/rctOps.cpp
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@ -320,7 +320,7 @@ namespace rct {
//be careful these are also in crypto namespace
//cn_fast_hash for arbitrary multiples of 32 bytes
void cn_fast_hash(key &hash, const void * data, const std::size_t l) {
keccak((uint8_t *)data, l, hash.bytes, 32);
keccak((const uint8_t *)data, l, hash.bytes, 32);
}
void hash_to_scalar(key &hash, const void * data, const std::size_t l) {
@ -330,7 +330,7 @@ namespace rct {
//cn_fast_hash for a 32 byte key
void cn_fast_hash(key & hash, const key & in) {
keccak((uint8_t *)in.bytes, 32, hash.bytes, 32);
keccak((const uint8_t *)in.bytes, 32, hash.bytes, 32);
}
void hash_to_scalar(key & hash, const key & in) {
@ -341,7 +341,7 @@ namespace rct {
//cn_fast_hash for a 32 byte key
key cn_fast_hash(const key & in) {
key hash;
keccak((uint8_t *)in.bytes, 32, hash.bytes, 32);
keccak((const uint8_t *)in.bytes, 32, hash.bytes, 32);
return hash;
}
@ -354,7 +354,7 @@ namespace rct {
//cn_fast_hash for a 128 byte unsigned char
key cn_fast_hash128(const void * in) {
key hash;
keccak((uint8_t *)in, 128, hash.bytes, 32);
keccak((const uint8_t *)in, 128, hash.bytes, 32);
return hash;
}
@ -367,20 +367,13 @@ namespace rct {
//cn_fast_hash for multisig purpose
//This takes the outputs and commitments
//and hashes them into a 32 byte sized key
key cn_fast_hash(ctkeyV PC) {
key rv = identity();
std::size_t l = (std::size_t)PC.size();
size_t i = 0, j = 0;
vector<char> m(l * 64);
for (i = 0 ; i < l ; i++) {
memcpy(&m[i * 64], &PC[i].dest, 32);
memcpy(&m[i * 64 + 32], &PC[i].mask, 32);
}
cn_fast_hash(rv, &m[0], 64*l);
key cn_fast_hash(const ctkeyV &PC) {
key rv;
cn_fast_hash(rv, &PC[0], 64*PC.size());
return rv;
}
key hash_to_scalar(ctkeyV PC) {
key hash_to_scalar(const ctkeyV &PC) {
key rv = cn_fast_hash(PC);
sc_reduce32(rv.bytes);
return rv;
@ -391,14 +384,8 @@ namespace rct {
//put them in the key vector and it concatenates them
//and then hashes them
key cn_fast_hash(const keyV &keys) {
size_t l = keys.size();
vector<unsigned char> m(l * 32);
size_t i;
for (i = 0 ; i < l ; i++) {
memcpy(&m[i * 32], keys[i].bytes, 32);
}
key rv;
cn_fast_hash(rv, &m[0], 32 * l);
cn_fast_hash(rv, &keys[0], keys.size() * sizeof(keys[0]));
//dp(rv);
return rv;
}

4
src/ringct/rctOps.h
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@ -149,8 +149,8 @@ namespace rct {
//for mg sigs
key cn_fast_hash128(const void * in);
key hash_to_scalar128(const void * in);
key cn_fast_hash(ctkeyV PC);
key hash_to_scalar(ctkeyV PC);
key cn_fast_hash(const ctkeyV &PC);
key hash_to_scalar(const ctkeyV &PC);
//for mg sigs
key cn_fast_hash(const keyV &keys);
key hash_to_scalar(const keyV &keys);

128
src/ringct/rctSigs.cpp
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@ -28,14 +28,26 @@
// 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.
#include <boost/asio.hpp>
#include "misc_log_ex.h"
#include "common/perf_timer.h"
#include "common/util.h"
#include "rctSigs.h"
#include "cryptonote_core/cryptonote_format_utils.h"
using namespace crypto;
using namespace std;
#define KILL_IOSERVICE() \
if(ioservice_active) \
{ \
work.reset(); \
while (!ioservice.stopped()) ioservice.poll(); \
threadpool.join_all(); \
ioservice.stop(); \
ioservice_active = false; \
}
namespace rct {
//Schnorr Non-linkable
@ -43,7 +55,7 @@ namespace rct {
//Ver Verifies that signer knows an "x" such that xG = one of P1 or P2
//These are called in the below ASNL sig generation
void GenSchnorrNonLinkable(key & L1, key & s1, key & s2, const key & x, const key & P1, const key & P2, int index) {
void GenSchnorrNonLinkable(key & L1, key & s1, key & s2, const key & x, const key & P1, const key & P2, unsigned int index) {
key c1, c2, L2;
key a = skGen();
if (index == 0) {
@ -95,7 +107,7 @@ namespace rct {
asnlSig rv;
rv.s = zero();
for (j = 0; j < ATOMS; j++) {
GenSchnorrNonLinkable(rv.L1[j], s1[j], rv.s2[j], x[j], P1[j], P2[j], (int)indices[j]);
GenSchnorrNonLinkable(rv.L1[j], s1[j], rv.s2[j], x[j], P1[j], P2[j], indices[j]);
sc_add(rv.s.bytes, rv.s.bytes, s1[j].bytes);
}
return rv;
@ -348,9 +360,14 @@ namespace rct {
return true;
}
void verRangeWrapper(const key & C, const rangeSig & as, bool &result) {
result = verRange(C, as);
}
key get_pre_mlsag_hash(const rctSig &rv)
{
keyV hashes;
hashes.reserve(3);
hashes.push_back(rv.message);
crypto::hash h;
@ -364,6 +381,7 @@ namespace rct {
hashes.push_back(hash2rct(h));
keyV kv;
kv.reserve((64*3+1) * rv.p.rangeSigs.size());
for (auto r: rv.p.rangeSigs)
{
for (size_t n = 0; n < 64; ++n)
@ -526,6 +544,10 @@ namespace rct {
return MLSAG_Ver(message, M, mg, rows);
}
void verRctMGSimpleWrapper(const key &message, const mgSig &mg, const ctkeyV & pubs, const key & C, bool &result) {
result = verRctMGSimple(message, mg, pubs, C);
}
//These functions get keys from blockchain
//replace these when connecting blockchain
//getKeyFromBlockchain grabs a key from the blockchain at "reference_index" to mix with
@ -743,17 +765,41 @@ namespace rct {
// some rct ops can throw
try
{
size_t i = 0;
bool tmp;
boost::asio::io_service ioservice;
boost::thread_group threadpool;
std::unique_ptr<boost::asio::io_service::work> work(new boost::asio::io_service::work(ioservice));
size_t threads = tools::get_max_concurrency();
threads = std::min(threads, rv.outPk.size());
for (size_t i = 0; i < threads; ++i)
threadpool.create_thread(boost::bind(&boost::asio::io_service::run, &ioservice));
bool ioservice_active = threads > 1;
std::deque<bool> results(rv.outPk.size(), false);
epee::misc_utils::auto_scope_leave_caller ioservice_killer = epee::misc_utils::create_scope_leave_handler([&]() { KILL_IOSERVICE(); });
DP("range proofs verified?");
for (i = 0; i < rv.outPk.size(); i++) {
tmp = verRange(rv.outPk[i].mask, rv.p.rangeSigs[i]);
for (size_t i = 0; i < rv.outPk.size(); i++) {
if (threads > 1) {
ioservice.dispatch(boost::bind(&verRangeWrapper, std::cref(rv.outPk[i].mask), std::cref(rv.p.rangeSigs[i]), std::ref(results[i])));
}
else {
bool tmp = verRange(rv.outPk[i].mask, rv.p.rangeSigs[i]);
DP(tmp);
if (!tmp) {
LOG_ERROR("Range proof verification failed for input " << i);
return false;
}
}
}
KILL_IOSERVICE();
if (threads > 1) {
for (size_t i = 0; i < rv.outPk.size(); ++i) {
if (!results[i]) {
LOG_ERROR("Range proof verified failed for input " << i);
return false;
}
}
}
//compute txn fee
key txnFeeKey = scalarmultH(d2h(rv.txnFee));
bool mgVerd = verRctMG(rv.p.MGs[0], rv.mixRing, rv.outPk, txnFeeKey, get_pre_mlsag_hash(rv));
@ -784,30 +830,88 @@ namespace rct {
CHECK_AND_ASSERT_MES(rv.pseudoOuts.size() == rv.p.MGs.size(), false, "Mismatched sizes of rv.pseudoOuts and rv.p.MGs");
CHECK_AND_ASSERT_MES(rv.pseudoOuts.size() == rv.mixRing.size(), false, "Mismatched sizes of rv.pseudoOuts and mixRing");
key sumOutpks = identity();
{
boost::asio::io_service ioservice;
boost::thread_group threadpool;
std::unique_ptr<boost::asio::io_service::work> work(new boost::asio::io_service::work(ioservice));
size_t threads = tools::get_max_concurrency();
threads = std::min(threads, rv.outPk.size());
for (size_t i = 0; i < threads; ++i)
threadpool.create_thread(boost::bind(&boost::asio::io_service::run, &ioservice));
bool ioservice_active = threads > 1;
std::deque<bool> results(rv.outPk.size(), false);
epee::misc_utils::auto_scope_leave_caller ioservice_killer = epee::misc_utils::create_scope_leave_handler([&]() { KILL_IOSERVICE(); });
for (i = 0; i < rv.outPk.size(); i++) {
if (!verRange(rv.outPk[i].mask, rv.p.rangeSigs[i])) {
if (threads > 1) {
ioservice.dispatch(boost::bind(&verRangeWrapper, std::cref(rv.outPk[i].mask), std::cref(rv.p.rangeSigs[i]), std::ref(results[i])));
}
else if (!verRange(rv.outPk[i].mask, rv.p.rangeSigs[i])) {
LOG_ERROR("Range proof verified failed for input " << i);
return false;
}
}
KILL_IOSERVICE();
if (threads > 1) {
for (size_t i = 0; i < rv.outPk.size(); ++i) {
if (!results[i]) {
LOG_ERROR("Range proof verified failed for input " << i);
return false;
}
}
}
}
key sumOutpks = identity();
for (i = 0; i < rv.outPk.size(); i++) {
addKeys(sumOutpks, sumOutpks, rv.outPk[i].mask);
}
DP(sumOutpks);
key txnFeeKey = scalarmultH(d2h(rv.txnFee));
addKeys(sumOutpks, txnFeeKey, sumOutpks);
bool tmpb = false;
key message = get_pre_mlsag_hash(rv);
key sumPseudoOuts = identity();
{
boost::asio::io_service ioservice;
boost::thread_group threadpool;
std::unique_ptr<boost::asio::io_service::work> work(new boost::asio::io_service::work(ioservice));
size_t threads = tools::get_max_concurrency();
threads = std::min(threads, rv.mixRing.size());
for (size_t i = 0; i < threads; ++i)
threadpool.create_thread(boost::bind(&boost::asio::io_service::run, &ioservice));
bool ioservice_active = threads > 1;
std::deque<bool> results(rv.mixRing.size(), false);
epee::misc_utils::auto_scope_leave_caller ioservice_killer = epee::misc_utils::create_scope_leave_handler([&]() { KILL_IOSERVICE(); });
for (i = 0 ; i < rv.mixRing.size() ; i++) {
tmpb = verRctMGSimple(message, rv.p.MGs[i], rv.mixRing[i], rv.pseudoOuts[i]);
addKeys(sumPseudoOuts, sumPseudoOuts, rv.pseudoOuts[i]);
if (threads > 1) {
ioservice.dispatch(boost::bind(&verRctMGSimpleWrapper, std::cref(message), std::cref(rv.p.MGs[i]), std::cref(rv.mixRing[i]), std::cref(rv.pseudoOuts[i]), std::ref(results[i])));
}
else {
bool tmpb = verRctMGSimple(message, rv.p.MGs[i], rv.mixRing[i], rv.pseudoOuts[i]);
DP(tmpb);
if (!tmpb) {
LOG_ERROR("verRctMGSimple failed for input " << i);
return false;
}
}
}
KILL_IOSERVICE();
if (threads > 1) {
for (size_t i = 0; i < results.size(); ++i) {
if (!results[i]) {
LOG_ERROR("verRctMGSimple failed for input " << i);
return false;
}
}
}
}
key sumPseudoOuts = identity();
for (i = 0 ; i < rv.mixRing.size() ; i++) {
addKeys(sumPseudoOuts, sumPseudoOuts, rv.pseudoOuts[i]);
}
DP(sumPseudoOuts);
//check pseudoOuts vs Outs..

2
src/ringct/rctSigs.h
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@ -70,7 +70,7 @@ namespace rct {
//Gen Gives a signature (L1, s1, s2) proving that the sender knows "x" such that xG = one of P1 or P2
//Ver Verifies that signer knows an "x" such that xG = one of P1 or P2
//These are called in the below ASNL sig generation
void GenSchnorrNonLinkable(key & L1, key & s1, key & s2, const key & x, const key & P1, const key & P2, int index);
void GenSchnorrNonLinkable(key & L1, key & s1, key & s2, const key & x, const key & P1, const key & P2, unsigned int index);
bool VerSchnorrNonLinkable(const key & P1, const key & P2, const key & L1, const key & s1, const key & s2);
//Aggregate Schnorr Non-linkable Ring Signature (ASNL)