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blockchain_blackball: avoid false positives for different amounts

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Identical offset based rings may not actually be identical rings
since they represent different outputs
This commit is contained in:
moneromooo-monero 2018-08-12 21:45:10 +00:00
parent 80e4fef3c6
commit 2b2a681b01
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
1 changed files with 12 additions and 8 deletions
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20
src/blockchain_utilities/blockchain_blackball.cpp
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@ -298,14 +298,18 @@ static void close()
} }
} }
static std::string compress_ring(const std::vector<uint64_t> &ring) static std::string compress_ring(const std::vector<uint64_t> &ring, std::string s = "")
{ {
std::string s;
for (uint64_t out: ring) for (uint64_t out: ring)
s += tools::get_varint_data(out); s += tools::get_varint_data(out);
return s; return s;
} }
static std::string compress_ring(uint64_t amount, const std::vector<uint64_t> &ring)
{
return compress_ring(ring, tools::get_varint_data(amount));
}
static std::vector<uint64_t> decompress_ring(const std::string &s) static std::vector<uint64_t> decompress_ring(const std::string &s)
{ {
std::vector<uint64_t> ring; std::vector<uint64_t> ring;
@ -583,9 +587,9 @@ static std::string keep_under_511(const std::string &s)
return std::string((const char*)&hash, 32); return std::string((const char*)&hash, 32);
} }
static uint64_t get_ring_instances(MDB_txn *txn, const std::vector<uint64_t> &ring) static uint64_t get_ring_instances(MDB_txn *txn, uint64_t amount, const std::vector<uint64_t> &ring)
{ {
const std::string sring = keep_under_511(compress_ring(ring)); const std::string sring = keep_under_511(compress_ring(amount, ring));
MDB_val k, v; MDB_val k, v;
k.mv_data = (void*)sring.data(); k.mv_data = (void*)sring.data();
k.mv_size = sring.size(); k.mv_size = sring.size();
@ -596,9 +600,9 @@ static uint64_t get_ring_instances(MDB_txn *txn, const std::vector<uint64_t> &ri
return *(const uint64_t*)v.mv_data; return *(const uint64_t*)v.mv_data;
} }
static void set_ring_instances(MDB_txn *txn, const std::vector<uint64_t> &ring, uint64_t count) static void set_ring_instances(MDB_txn *txn, uint64_t amount, const std::vector<uint64_t> &ring, uint64_t count)
{ {
const std::string sring = keep_under_511(compress_ring(ring)); const std::string sring = keep_under_511(compress_ring(amount, ring));
MDB_val k, v; MDB_val k, v;
k.mv_data = (void*)sring.data(); k.mv_data = (void*)sring.data();
k.mv_size = sring.size(); k.mv_size = sring.size();
@ -945,9 +949,9 @@ int main(int argc, char* argv[])
std::vector<uint64_t> relative_ring; std::vector<uint64_t> relative_ring;
std::vector<uint64_t> new_ring = canonicalize(txin.key_offsets); std::vector<uint64_t> new_ring = canonicalize(txin.key_offsets);
const uint32_t ring_size = txin.key_offsets.size(); const uint32_t ring_size = txin.key_offsets.size();
uint64_t instances = get_ring_instances(txn, new_ring); uint64_t instances = get_ring_instances(txn, txin.amount, new_ring);
++instances; ++instances;
set_ring_instances(txn, new_ring, instances); set_ring_instances(txn, txin.amount, new_ring, instances);
if (n == 0 && ring_size == 1) if (n == 0 && ring_size == 1)
{ {
const crypto::public_key pkey = get_output_key(cur0, txin.amount, absolute[0]); const crypto::public_key pkey = get_output_key(cur0, txin.amount, absolute[0]);