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Merge pull request #8958
b0bf49a blockchain_db: add k-anonymity to txid fetching (jeffro256)This commit is contained in:
luigi1111
commit
d5da693866
13 changed files with 770 additions and 1 deletions
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@ -1305,6 +1305,21 @@ public:
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*/
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virtual bool get_pruned_tx_blobs_from(const crypto::hash& h, size_t count, std::vector<cryptonote::blobdata> &bd) const = 0;
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/**
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* @brief Get all txids in the database (chain and pool) that match a certain nbits txid template
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*
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* To be more specific, for all `dbtxid` txids in the database, return `dbtxid` if
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* `0 == cryptonote::compare_hash32_reversed_nbits(txid_template, dbtxid, nbits)`.
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*
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* @param txid_template the transaction id template
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* @param nbits number of bits to compare against in the template
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* @param max_num_txs The maximum number of txids to match, if we hit this limit, throw early
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* @return std::vector<crypto::hash> the list of all matching txids
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*
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* @throw TX_EXISTS if the number of txids that match exceed `max_num_txs`
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*/
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virtual std::vector<crypto::hash> get_txids_loose(const crypto::hash& txid_template, std::uint32_t nbits, uint64_t max_num_txs = 0) = 0;
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/**
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* @brief fetches a variable number of blocks and transactions from the given height, in canonical blockchain order
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*
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@ -3144,6 +3144,58 @@ bool BlockchainLMDB::get_pruned_tx_blobs_from(const crypto::hash& h, size_t coun
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return true;
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}
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std::vector<crypto::hash> BlockchainLMDB::get_txids_loose(const crypto::hash& txid_template, std::uint32_t bits, uint64_t max_num_txs)
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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check_open();
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std::vector<crypto::hash> matching_hashes;
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TXN_PREFIX_RDONLY(); // Start a read-only transaction
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RCURSOR(tx_indices); // Open cursors to the tx_indices and txpool_meta databases
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RCURSOR(txpool_meta);
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// Search on-chain and pool transactions together, starting with on-chain txs
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MDB_cursor* cursor = m_cur_tx_indices;
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MDB_val k = zerokval; // tx_indicies DB uses a dummy key
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MDB_val_set(v, txid_template); // tx_indicies DB indexes data values by crypto::hash value on front
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MDB_cursor_op op = MDB_GET_BOTH_RANGE; // Set the cursor to the first key/value pair >= the given key
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bool doing_chain = true; // this variable tells us whether we are processing chain or pool txs
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while (1)
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{
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const int get_result = mdb_cursor_get(cursor, &k, &v, op);
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op = doing_chain ? MDB_NEXT_DUP : MDB_NEXT; // Set the cursor to the next key/value pair
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if (get_result && get_result != MDB_NOTFOUND)
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throw0(DB_ERROR(lmdb_error("DB error attempting to fetch txid range", get_result).c_str()));
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// In tx_indicies, the hash is stored at the data, in txpool_meta at the key
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const crypto::hash* const p_dbtxid = (const crypto::hash*)(doing_chain ? v.mv_data : k.mv_data);
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// Check if we reached the end of a DB or the hashes no longer match the template
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if (get_result == MDB_NOTFOUND || compare_hash32_reversed_nbits(txid_template, *p_dbtxid, bits))
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{
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if (doing_chain) // done with chain processing, switch to pool processing
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{
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k.mv_size = sizeof(crypto::hash); // txpool_meta DB is indexed using crypto::hash as keys
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k.mv_data = (void*) txid_template.data;
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cursor = m_cur_txpool_meta; // switch databases
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op = MDB_SET_RANGE; // Set the cursor to the first key >= the given key
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doing_chain = false;
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continue;
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}
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break; // if we get to this point, then we finished pool processing and we are done
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}
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else if (matching_hashes.size() >= max_num_txs && max_num_txs != 0)
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throw0(TX_EXISTS("number of tx hashes in template range exceeds maximum"));
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matching_hashes.push_back(*p_dbtxid);
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}
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TXN_POSTFIX_RDONLY(); // End the read-only transaction
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return matching_hashes;
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}
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bool BlockchainLMDB::get_blocks_from(uint64_t start_height, size_t min_block_count, size_t max_block_count, size_t max_tx_count, size_t max_size, std::vector<std::pair<std::pair<cryptonote::blobdata, crypto::hash>, std::vector<std::pair<crypto::hash, cryptonote::blobdata>>>>& blocks, bool pruned, bool skip_coinbase, bool get_miner_tx_hash) const
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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@ -262,6 +262,8 @@ public:
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virtual bool get_prunable_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const;
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virtual bool get_prunable_tx_hash(const crypto::hash& tx_hash, crypto::hash &prunable_hash) const;
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virtual std::vector<crypto::hash> get_txids_loose(const crypto::hash& h, std::uint32_t bits, uint64_t max_num_txs = 0);
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virtual uint64_t get_tx_count() const;
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virtual std::vector<transaction> get_tx_list(const std::vector<crypto::hash>& hlist) const;
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@ -71,6 +71,7 @@ public:
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virtual bool get_pruned_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const override { return false; }
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virtual bool get_pruned_tx_blobs_from(const crypto::hash& h, size_t count, std::vector<cryptonote::blobdata> &bd) const override { return false; }
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virtual bool get_blocks_from(uint64_t start_height, size_t min_block_count, size_t max_block_count, size_t max_tx_count, size_t max_size, std::vector<std::pair<std::pair<cryptonote::blobdata, crypto::hash>, std::vector<std::pair<crypto::hash, cryptonote::blobdata>>>>& blocks, bool pruned, bool skip_coinbase, bool get_miner_tx_hash) const override { return false; }
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virtual std::vector<crypto::hash> get_txids_loose(const crypto::hash& h, std::uint32_t bits, uint64_t max_num_txs = 0) override { return {}; }
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virtual bool get_prunable_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const override { return false; }
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virtual bool get_prunable_tx_hash(const crypto::hash& tx_hash, crypto::hash &prunable_hash) const override { return false; }
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virtual uint64_t get_block_height(const crypto::hash& h) const override { return 0; }
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@ -310,6 +310,53 @@ namespace cryptonote {
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bool operator ==(const cryptonote::block& a, const cryptonote::block& b) {
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return cryptonote::get_block_hash(a) == cryptonote::get_block_hash(b);
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}
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//--------------------------------------------------------------------------------
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int compare_hash32_reversed_nbits(const crypto::hash& ha, const crypto::hash& hb, unsigned int nbits)
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{
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static_assert(sizeof(uint64_t) * 4 == sizeof(crypto::hash), "hash is wrong size");
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// We have to copy these buffers b/c of the strict aliasing rule
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uint64_t va[4];
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memcpy(va, &ha, sizeof(crypto::hash));
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uint64_t vb[4];
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memcpy(vb, &hb, sizeof(crypto::hash));
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for (int n = 3; n >= 0 && nbits; --n)
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{
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const unsigned int msb_nbits = std::min<unsigned int>(64, nbits);
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const uint64_t lsb_nbits_dropped = static_cast<uint64_t>(64 - msb_nbits);
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const uint64_t van = SWAP64LE(va[n]) >> lsb_nbits_dropped;
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const uint64_t vbn = SWAP64LE(vb[n]) >> lsb_nbits_dropped;
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nbits -= msb_nbits;
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if (van < vbn) return -1; else if (van > vbn) return 1;
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}
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return 0;
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}
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crypto::hash make_hash32_loose_template(unsigned int nbits, const crypto::hash& h)
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{
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static_assert(sizeof(uint64_t) * 4 == sizeof(crypto::hash), "hash is wrong size");
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// We have to copy this buffer b/c of the strict aliasing rule
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uint64_t vh[4];
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memcpy(vh, &h, sizeof(crypto::hash));
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for (int n = 3; n >= 0; --n)
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{
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const unsigned int msb_nbits = std::min<unsigned int>(64, nbits);
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const uint64_t mask = msb_nbits ? (~((std::uint64_t(1) << (64 - msb_nbits)) - 1)) : 0;
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nbits -= msb_nbits;
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vh[n] &= SWAP64LE(mask);
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}
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crypto::hash res;
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memcpy(&res, vh, sizeof(crypto::hash));
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return res;
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}
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//--------------------------------------------------------------------------------
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}
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//--------------------------------------------------------------------------------
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@ -112,6 +112,41 @@ namespace cryptonote {
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bool operator ==(const cryptonote::transaction& a, const cryptonote::transaction& b);
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bool operator ==(const cryptonote::block& a, const cryptonote::block& b);
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/************************************************************************/
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/* K-anonymity helper functions */
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/************************************************************************/
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/**
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* @brief Compares two hashes up to `nbits` bits in reverse byte order ("LMDB key order")
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*
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* The comparison essentially goes from the 31th, 30th, 29th, ..., 0th byte and compares the MSBs
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* to the LSBs in each byte, up to `nbits` bits. If we use up `nbits` bits before finding a
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* difference in the bits between the two hashes, we return 0. If we encounter a zero bit in `ha`
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* where `hb` has a one in that bit place, then we reutrn -1. If the converse scenario happens,
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* we return a 1. When `nbits` == 256 (there are 256 bits in `crypto::hash`), calling this is
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* functionally identical to `BlockchainLMDB::compare_hash32`.
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*
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* @param ha left hash
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* @param hb right hash
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* @param nbits the number of bits to consider, a higher value means a finer comparison
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* @return int 0 if ha == hb, -1 if ha < hb, 1 if ha > hb
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*/
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int compare_hash32_reversed_nbits(const crypto::hash& ha, const crypto::hash& hb, unsigned int nbits);
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/**
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* @brief Make a template which matches `h` in LMDB order up to `nbits` bits, safe for k-anonymous fetching
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*
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* To be more technical, this function creates a hash which satifies the following property:
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* For all `H_prime` s.t. `0 == compare_hash32_reversed_nbits(real_hash, H_prime, nbits)`,
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* `1 > compare_hash32_reversed_nbits(real_hash, H_prime, 256)`.
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* In other words, we return the "least" hash nbit-equal to `real_hash`.
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*
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* @param nbits The number of "MSB" bits to include in the template
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* @param real_hash The original hash which contains more information than we want to disclose
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* @return crypto::hash hash template that contains `nbits` bits matching real_hash and no more
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*/
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crypto::hash make_hash32_loose_template(unsigned int nbits, const crypto::hash& real_hash);
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}
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bool parse_hash256(const std::string &str_hash, crypto::hash& hash);
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@ -3535,6 +3535,82 @@ namespace cryptonote
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return true;
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}
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//------------------------------------------------------------------------------------------------------------------------------
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bool core_rpc_server::on_get_txids_loose(const COMMAND_RPC_GET_TXIDS_LOOSE::request& req, COMMAND_RPC_GET_TXIDS_LOOSE::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx)
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{
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RPC_TRACKER(get_txids_loose);
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// Maybe don't use bootstrap since this endpoint is meant to retreive TXIDs w/ k-anonymity,
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// so shunting this request to a random node seems counterproductive.
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#if BYTE_ORDER == LITTLE_ENDIAN
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const uint64_t max_num_txids = RESTRICTED_SPENT_KEY_IMAGES_COUNT * (m_restricted ? 1 : 10);
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// Sanity check parameters
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if (req.num_matching_bits > 256)
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{
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error_resp.code = CORE_RPC_ERROR_CODE_WRONG_PARAM;
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error_resp.message = "There are only 256 bits in a hash, you gave too many";
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return false;
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}
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// Attempt to guess when bit count is too low before fetching, within a certain margin of error
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const uint64_t num_txs_ever = m_core.get_blockchain_storage().get_db().get_tx_count();
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const uint64_t num_expected_fetch = (num_txs_ever >> std::min((int) req.num_matching_bits, 63));
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const uint64_t max_num_txids_with_margin = 2 * max_num_txids;
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if (num_expected_fetch > max_num_txids_with_margin)
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{
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error_resp.code = CORE_RPC_ERROR_CODE_WRONG_PARAM;
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error_resp.message = "Trying to search with too few matching bits, detected before fetching";
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return false;
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}
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// Convert txid template to a crypto::hash
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crypto::hash search_hash;
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if (!epee::string_tools::hex_to_pod(req.txid_template, search_hash))
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{
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error_resp.code = CORE_RPC_ERROR_CODE_WRONG_PARAM;
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error_resp.message = "Could not decode hex txid";
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return false;
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}
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// Check that txid template is zeroed correctly for number of given matchign bits
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else if (search_hash != make_hash32_loose_template(req.num_matching_bits, search_hash))
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{
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error_resp.code = CORE_RPC_ERROR_CODE_WRONG_PARAM;
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error_resp.message = "Txid template is not zeroed correctly for number of bits. You could be leaking true txid!";
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return false;
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}
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try
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{
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// Do the DB fetch
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const auto txids = m_core.get_blockchain_storage().get_db().get_txids_loose(search_hash, req.num_matching_bits, max_num_txids);
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// Fill out response form
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for (const auto& txid : txids)
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res.txids.emplace_back(epee::string_tools::pod_to_hex(txid));
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}
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catch (const TX_EXISTS&)
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{
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error_resp.code = CORE_RPC_ERROR_CODE_WRONG_PARAM;
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error_resp.message = "Trying to search with too few matching bits";
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return false;
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}
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catch (const std::exception& e)
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{
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error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
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error_resp.message = std::string("Error during get_txids_loose: ") + e.what();
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return false;
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}
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res.status = CORE_RPC_STATUS_OK;
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return true;
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#else // BYTE_ORDER == BIG_ENDIAN
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// BlockchainLMDB::compare_hash32 has different key ordering (thus different txid templates) on BE systems
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error_resp.code = CORE_RPC_ERROR_CODE_INTERNAL_ERROR;
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error_resp.message = "Due to implementation details, this feature is not available on big-endian daemons";
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return false;
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#endif
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}
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//------------------------------------------------------------------------------------------------------------------------------
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bool core_rpc_server::on_rpc_access_submit_nonce(const COMMAND_RPC_ACCESS_SUBMIT_NONCE::request& req, COMMAND_RPC_ACCESS_SUBMIT_NONCE::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx)
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{
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RPC_TRACKER(rpc_access_submit_nonce);
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@ -178,6 +178,7 @@ namespace cryptonote
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MAP_JON_RPC_WE("get_output_distribution", on_get_output_distribution, COMMAND_RPC_GET_OUTPUT_DISTRIBUTION)
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MAP_JON_RPC_WE_IF("prune_blockchain", on_prune_blockchain, COMMAND_RPC_PRUNE_BLOCKCHAIN, !m_restricted)
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MAP_JON_RPC_WE_IF("flush_cache", on_flush_cache, COMMAND_RPC_FLUSH_CACHE, !m_restricted)
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MAP_JON_RPC_WE("get_txids_loose", on_get_txids_loose, COMMAND_RPC_GET_TXIDS_LOOSE)
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MAP_JON_RPC_WE("rpc_access_info", on_rpc_access_info, COMMAND_RPC_ACCESS_INFO)
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MAP_JON_RPC_WE("rpc_access_submit_nonce",on_rpc_access_submit_nonce, COMMAND_RPC_ACCESS_SUBMIT_NONCE)
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MAP_JON_RPC_WE("rpc_access_pay", on_rpc_access_pay, COMMAND_RPC_ACCESS_PAY)
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@ -255,6 +256,7 @@ namespace cryptonote
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bool on_get_output_distribution(const COMMAND_RPC_GET_OUTPUT_DISTRIBUTION::request& req, COMMAND_RPC_GET_OUTPUT_DISTRIBUTION::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx = NULL);
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bool on_prune_blockchain(const COMMAND_RPC_PRUNE_BLOCKCHAIN::request& req, COMMAND_RPC_PRUNE_BLOCKCHAIN::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx = NULL);
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bool on_flush_cache(const COMMAND_RPC_FLUSH_CACHE::request& req, COMMAND_RPC_FLUSH_CACHE::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx = NULL);
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bool on_get_txids_loose(const COMMAND_RPC_GET_TXIDS_LOOSE::request& req, COMMAND_RPC_GET_TXIDS_LOOSE::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx = NULL);
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bool on_rpc_access_info(const COMMAND_RPC_ACCESS_INFO::request& req, COMMAND_RPC_ACCESS_INFO::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx = NULL);
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bool on_rpc_access_submit_nonce(const COMMAND_RPC_ACCESS_SUBMIT_NONCE::request& req, COMMAND_RPC_ACCESS_SUBMIT_NONCE::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx = NULL);
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bool on_rpc_access_pay(const COMMAND_RPC_ACCESS_PAY::request& req, COMMAND_RPC_ACCESS_PAY::response& res, epee::json_rpc::error& error_resp, const connection_context *ctx = NULL);
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@ -2793,4 +2793,31 @@ namespace cryptonote
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typedef epee::misc_utils::struct_init<response_t> response;
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};
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struct COMMAND_RPC_GET_TXIDS_LOOSE
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{
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struct request_t: public rpc_request_base
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{
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std::string txid_template;
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std::uint32_t num_matching_bits;
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BEGIN_KV_SERIALIZE_MAP()
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KV_SERIALIZE_PARENT(rpc_request_base)
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KV_SERIALIZE(txid_template)
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KV_SERIALIZE(num_matching_bits)
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END_KV_SERIALIZE_MAP()
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};
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typedef epee::misc_utils::struct_init<request_t> request;
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struct response_t: public rpc_response_base
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{
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std::vector<std::string> txids;
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BEGIN_KV_SERIALIZE_MAP()
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KV_SERIALIZE_PARENT(rpc_response_base)
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KV_SERIALIZE(txids)
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END_KV_SERIALIZE_MAP()
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};
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typedef epee::misc_utils::struct_init<response_t> response;
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};
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}
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@ -10,7 +10,11 @@ import string
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import os
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USAGE = 'usage: functional_tests_rpc.py <python> <srcdir> <builddir> [<tests-to-run> | all]'
|
||||
DEFAULT_TESTS = ['address_book', 'bans', 'blockchain', 'cold_signing', 'daemon_info', 'get_output_distribution', 'integrated_address', 'mining', 'multisig', 'p2p', 'proofs', 'rpc_payment', 'sign_message', 'transfer', 'txpool', 'uri', 'validate_address', 'wallet']
|
||||
DEFAULT_TESTS = [
|
||||
'address_book', 'bans', 'blockchain', 'cold_signing', 'daemon_info', 'get_output_distribution',
|
||||
'integrated_address', 'k_anonymity', 'mining', 'multisig', 'p2p', 'proofs', 'rpc_payment',
|
||||
'sign_message', 'transfer', 'txpool', 'uri', 'validate_address', 'wallet'
|
||||
]
|
||||
try:
|
||||
python = sys.argv[1]
|
||||
srcdir = sys.argv[2]
|
||||
|
|
|
|||
314
tests/functional_tests/k_anonymity.py
Executable file
314
tests/functional_tests/k_anonymity.py
Executable file
|
|
@ -0,0 +1,314 @@
|
|||
#!/usr/bin/env python3
|
||||
|
||||
# Copyright (c) 2023, The Monero Project
|
||||
#
|
||||
# All rights reserved.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without modification, are
|
||||
# permitted provided that the following conditions are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright notice, this list of
|
||||
# conditions and the following disclaimer.
|
||||
#
|
||||
# 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
||||
# of conditions and the following disclaimer in the documentation and/or other
|
||||
# materials provided with the distribution.
|
||||
#
|
||||
# 3. Neither the name of the copyright holder nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software without specific
|
||||
# prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
||||
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
||||
# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
# 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.
|
||||
|
||||
from __future__ import print_function
|
||||
import math
|
||||
import random
|
||||
|
||||
"""
|
||||
Test the k-anonymity daemon RPC features:
|
||||
* txid fetching by prefix
|
||||
"""
|
||||
|
||||
from framework.daemon import Daemon
|
||||
from framework.wallet import Wallet
|
||||
|
||||
seeds = [
|
||||
'velvet lymph giddy number token physics poetry unquoted nibs useful sabotage limits benches lifestyle eden nitrogen anvil fewest avoid batch vials washing fences goat unquoted',
|
||||
'peeled mixture ionic radar utopia puddle buying illness nuns gadget river spout cavernous bounced paradise drunk looking cottage jump tequila melting went winter adjust spout',
|
||||
'tadpoles shrugged ritual exquisite deepest rest people musical farming otherwise shelter fabrics altitude seventh request tidy ivory diet vapidly syllabus logic espionage oozed opened people',
|
||||
'ocio charla pomelo humilde maduro geranio bruto moño admitir mil difícil diva lucir cuatro odisea riego bebida mueble cáncer puchero carbón poeta flor fruta fruta'
|
||||
]
|
||||
|
||||
pub_addrs = [
|
||||
'42ey1afDFnn4886T7196doS9GPMzexD9gXpsZJDwVjeRVdFCSoHnv7KPbBeGpzJBzHRCAs9UxqeoyFQMYbqSWYTfJJQAWDm',
|
||||
'44Kbx4sJ7JDRDV5aAhLJzQCjDz2ViLRduE3ijDZu3osWKBjMGkV1XPk4pfDUMqt1Aiezvephdqm6YD19GKFD9ZcXVUTp6BW',
|
||||
'45uQD4jzWwPazqr9QJx8CmFPN7a9RaEE8T4kULg6r8GzfcrcgKXshfYf8cezLWwmENHC9pDN2fGAUFmmdFxjeZSs3n671rz',
|
||||
'48hKTTTMfuiW2gDkmsibERHCjTCpqyCCh57WcU4KBeqDSAw7dG7Ad1h7v8iJF4q59aDqBATg315MuZqVmkF89E3cLPrBWsi'
|
||||
]
|
||||
|
||||
CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW = 60
|
||||
CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE = 10
|
||||
RESTRICTED_SPENT_KEY_IMAGES_COUNT = 5000
|
||||
|
||||
def make_hash32_loose_template(txid, nbits):
|
||||
txid_bytes = list(bytes.fromhex(txid))
|
||||
for i in reversed(range(32)):
|
||||
mask_nbits = min(8, nbits)
|
||||
mask = 256 - (1 << (8 - mask_nbits))
|
||||
nbits -= mask_nbits
|
||||
txid_bytes[i] &= mask
|
||||
return bytes(txid_bytes).hex()
|
||||
|
||||
def txid_list_is_sorted_in_template_order(txids):
|
||||
reversed_txid_bytes = [bytes(reversed(bytes.fromhex(txid))) for txid in txids]
|
||||
return sorted(reversed_txid_bytes) == reversed_txid_bytes
|
||||
|
||||
def txid_matches_template(txid, template, nbits):
|
||||
txid_bytes = bytes.fromhex(txid)
|
||||
template_bytes = bytes.fromhex(template)
|
||||
for i in reversed(range(32)):
|
||||
mask_nbits = min(8, nbits)
|
||||
mask = 256 - (1 << (8 - mask_nbits))
|
||||
nbits -= mask_nbits
|
||||
if 0 != ((txid_bytes[i] ^ template_bytes[i]) & mask):
|
||||
return False
|
||||
return True
|
||||
|
||||
class KAnonymityTest:
|
||||
def run_test(self):
|
||||
self.reset()
|
||||
self.create_wallets()
|
||||
|
||||
# If each of the N wallets is making N-1 transfers the first round, each N wallets needs
|
||||
# N-1 unlocked coinbase outputs
|
||||
N = len(seeds)
|
||||
self.mine_and_refresh(2 * N * (N - 1))
|
||||
self.mine_and_refresh(CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW)
|
||||
|
||||
# Generate a bunch of transactions
|
||||
NUM_ROUNDS = 10
|
||||
intermediate_mining_period = int(math.ceil(CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE / N)) * N
|
||||
for i in range(NUM_ROUNDS):
|
||||
self.transfer_around()
|
||||
self.mine_and_refresh(intermediate_mining_period)
|
||||
print("Wallets created {} transactions in {} rounds".format(len(self.wallet_txids), NUM_ROUNDS))
|
||||
|
||||
self.test_all_chain_txids() # Also gathers miner_txids
|
||||
|
||||
self.test_get_txids_loose_chain_suite()
|
||||
|
||||
self.test_get_txids_loose_pool_suite()
|
||||
|
||||
self.test_bad_txid_templates()
|
||||
|
||||
def reset(self):
|
||||
print('Resetting blockchain')
|
||||
daemon = Daemon()
|
||||
res = daemon.get_height()
|
||||
daemon.pop_blocks(res.height - 1)
|
||||
daemon.flush_txpool()
|
||||
self.wallet_txids = set()
|
||||
self.total_blocks_mined = 0
|
||||
self.miner_txids = set()
|
||||
self.pool_txids = set()
|
||||
|
||||
def create_wallets(self):
|
||||
print('Creating wallets')
|
||||
assert len(seeds) == len(pub_addrs)
|
||||
self.wallet = [None] * len(seeds)
|
||||
for i in range(len(seeds)):
|
||||
self.wallet[i] = Wallet(idx = i)
|
||||
# close the wallet if any, will throw if none is loaded
|
||||
try: self.wallet[i].close_wallet()
|
||||
except: pass
|
||||
res = self.wallet[i].restore_deterministic_wallet(seed = seeds[i])
|
||||
|
||||
def mine_and_refresh(self, num_blocks):
|
||||
print("Mining {} blocks".format(num_blocks))
|
||||
daemon = Daemon()
|
||||
|
||||
res = daemon.get_info()
|
||||
old_height = res.height
|
||||
|
||||
assert num_blocks % len(self.wallet) == 0
|
||||
assert len(self.wallet) == len(pub_addrs)
|
||||
|
||||
for i in range(len(self.wallet)):
|
||||
daemon.generateblocks(pub_addrs[i], num_blocks // len(self.wallet))
|
||||
|
||||
res = daemon.get_info()
|
||||
new_height = res.height
|
||||
assert new_height == old_height + num_blocks, "height {} -> {}".format(old_height, new_height)
|
||||
|
||||
for i in range(len(self.wallet)):
|
||||
self.wallet[i].refresh()
|
||||
res = self.wallet[i].get_height()
|
||||
assert res.height == new_height, "{} vs {}".format(res.height, new_height)
|
||||
|
||||
self.wallet_txids.update(self.pool_txids)
|
||||
self.pool_txids.clear()
|
||||
self.total_blocks_mined += num_blocks
|
||||
|
||||
def transfer_around(self):
|
||||
N = len(self.wallet)
|
||||
assert N == len(pub_addrs)
|
||||
|
||||
print("Creating transfers b/t wallets")
|
||||
|
||||
num_successful_transfers = 0
|
||||
fee_margin = 0.05 # 5%
|
||||
for sender in range(N):
|
||||
receivers = list((r for r in range(N) if r != sender))
|
||||
random.shuffle(receivers)
|
||||
assert len(receivers) == N - 1
|
||||
for j, receiver in enumerate(receivers):
|
||||
unlocked_balance = self.wallet[sender].get_balance().unlocked_balance
|
||||
if 0 == unlocked_balance:
|
||||
assert j != 0 # we want all wallets to start out with at least some funds
|
||||
break
|
||||
imperfect_starting_balance = unlocked_balance * (N - 1) / (N - 1 - j) * (1 - fee_margin)
|
||||
transfer_amount = int(imperfect_starting_balance / (N - 1))
|
||||
assert transfer_amount < unlocked_balance
|
||||
dst = {'address': pub_addrs[receiver], 'amount': transfer_amount}
|
||||
res = self.wallet[sender].transfer([dst], get_tx_metadata = True)
|
||||
tx_hex = res.tx_metadata
|
||||
self.pool_txids.add(res.tx_hash)
|
||||
res = self.wallet[sender].relay_tx(tx_hex)
|
||||
self.wallet[sender].refresh()
|
||||
num_successful_transfers += 1
|
||||
|
||||
print("Transferred {} times".format(num_successful_transfers))
|
||||
|
||||
def test_all_chain_txids(self):
|
||||
daemon = Daemon()
|
||||
|
||||
print("Grabbing all txids from the daemon and testing against known txids")
|
||||
|
||||
# If assert stmt below fails, this test case needs to be rewritten to chunk the requests;
|
||||
# there are simply too many txids on-chain to gather at once
|
||||
expected_total_num_txids = len(self.wallet_txids) + self.total_blocks_mined + 1 # +1 for genesis coinbase tx
|
||||
assert expected_total_num_txids <= RESTRICTED_SPENT_KEY_IMAGES_COUNT
|
||||
|
||||
res = daemon.get_txids_loose('0' * 64, 0)
|
||||
all_txids = res.txids
|
||||
assert 'c88ce9783b4f11190d7b9c17a69c1c52200f9faaee8e98dd07e6811175177139' in all_txids # genesis coinbase tx
|
||||
assert len(all_txids) == expected_total_num_txids, "{} {}".format(len(all_txids), expected_total_num_txids)
|
||||
|
||||
assert txid_list_is_sorted_in_template_order(all_txids)
|
||||
|
||||
for txid in self.wallet_txids:
|
||||
assert txid in all_txids
|
||||
|
||||
self.miner_txids = set(all_txids) - self.wallet_txids
|
||||
|
||||
def test_get_txids_loose_success(self, txid, num_matching_bits):
|
||||
daemon = Daemon()
|
||||
|
||||
txid_template = make_hash32_loose_template(txid, num_matching_bits)
|
||||
|
||||
res = daemon.get_txids_loose(txid_template, num_matching_bits)
|
||||
assert 'txids' in res
|
||||
txids = res.txids
|
||||
|
||||
first_pool_index = 0
|
||||
while first_pool_index < len(txids):
|
||||
if txids[first_pool_index] in self.pool_txids:
|
||||
break
|
||||
else:
|
||||
first_pool_index += 1
|
||||
|
||||
chain_txids = txids[:first_pool_index]
|
||||
pool_txids = txids[first_pool_index:]
|
||||
|
||||
assert txid_list_is_sorted_in_template_order(chain_txids)
|
||||
assert txid_list_is_sorted_in_template_order(pool_txids)
|
||||
|
||||
# Assert we know where txids came from
|
||||
for txid in chain_txids:
|
||||
assert (txid in self.wallet_txids) or (txid in self.miner_txids)
|
||||
for txid in pool_txids:
|
||||
assert txid in self.pool_txids
|
||||
|
||||
# Assert that all known txids were matched as they should've been
|
||||
for txid in self.wallet_txids:
|
||||
assert txid_matches_template(txid, txid_template, num_matching_bits) == (txid in chain_txids)
|
||||
for txid in self.miner_txids:
|
||||
assert txid_matches_template(txid, txid_template, num_matching_bits) == (txid in chain_txids)
|
||||
for txid in self.pool_txids:
|
||||
assert txid_matches_template(txid, txid_template, num_matching_bits) == (txid in pool_txids)
|
||||
|
||||
def test_get_txids_loose_chain_suite(self):
|
||||
daemon = Daemon()
|
||||
|
||||
print("Testing grabbing on-chain txids loosely with all different bit sizes")
|
||||
|
||||
# Assert pool empty
|
||||
assert len(self.pool_txids) == 0
|
||||
res = daemon.get_transaction_pool_hashes()
|
||||
assert not 'tx_hashes' in res or len(res.tx_hashes) == 0
|
||||
|
||||
assert len(self.wallet_txids)
|
||||
|
||||
current_chain_txids = list(self.wallet_txids.union(self.miner_txids))
|
||||
for nbits in range(0, 256):
|
||||
random_txid = random.choice(current_chain_txids)
|
||||
self.test_get_txids_loose_success(random_txid, nbits)
|
||||
|
||||
def test_get_txids_loose_pool_suite(self):
|
||||
daemon = Daemon()
|
||||
|
||||
print("Testing grabbing pool txids loosely with all different bit sizes")
|
||||
|
||||
# Create transactions to pool
|
||||
self.transfer_around()
|
||||
|
||||
# Assert pool not empty
|
||||
assert len(self.pool_txids) != 0
|
||||
res = daemon.get_transaction_pool_hashes()
|
||||
assert 'tx_hashes' in res and set(res.tx_hashes) == self.pool_txids
|
||||
|
||||
current_pool_txids = list(self.pool_txids)
|
||||
for nbits in range(0, 256):
|
||||
random_txid = random.choice(current_pool_txids)
|
||||
self.test_get_txids_loose_success(random_txid, nbits)
|
||||
|
||||
def test_bad_txid_templates(self):
|
||||
daemon = Daemon()
|
||||
|
||||
print("Making sure the daemon catches bad txid templates")
|
||||
|
||||
test_cases = [
|
||||
['q', 256],
|
||||
['a', 128],
|
||||
['69' * 32, 257],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 0],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 1],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 2],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 4],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 8],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 16],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 32],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 64],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 128],
|
||||
['0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789', 193],
|
||||
['0000000000000000000000000000000000000000000000000000000000000080', 0],
|
||||
['0000000000000000000000000000000000000000000000000000000000000007', 5],
|
||||
['00000000000000000000000000000000000000000000000000000000000000f7', 5],
|
||||
]
|
||||
|
||||
for txid_template, num_matching_bits in test_cases:
|
||||
ok = False
|
||||
try: res = daemon.get_txids_loose(txid_template, num_matching_bits)
|
||||
except: ok = True
|
||||
assert ok, 'bad template didnt error: {} {}'.format(txid_template, num_matching_bits)
|
||||
|
||||
if __name__ == '__main__':
|
||||
KAnonymityTest().run_test()
|
||||
|
|
@ -30,10 +30,14 @@
|
|||
#include <boost/range/algorithm/equal.hpp>
|
||||
#include <gtest/gtest.h>
|
||||
|
||||
#include "blockchain_db/lmdb/db_lmdb.h"
|
||||
#include "cryptonote_basic/cryptonote_basic_impl.h"
|
||||
#include "hex.h"
|
||||
#include "lmdb/database.h"
|
||||
#include "lmdb/table.h"
|
||||
#include "lmdb/transaction.h"
|
||||
#include "lmdb/util.h"
|
||||
#include "string_tools.h"
|
||||
|
||||
namespace
|
||||
{
|
||||
|
|
@ -53,6 +57,24 @@ namespace
|
|||
MDB_val right_val = lmdb::to_val(right);
|
||||
return (*cmp)(&left_val, &right_val);
|
||||
}
|
||||
|
||||
crypto::hash postfix_hex_to_hash(const std::string& hex)
|
||||
{
|
||||
if (hex.size() > 64) throw std::logic_error("postfix_hex_to_hash");
|
||||
std::string decoded_bytes;
|
||||
if (!epee::from_hex::to_string(decoded_bytes, hex)) throw std::logic_error("postfix_hex_to_hash");
|
||||
crypto::hash res = crypto::null_hash;
|
||||
memcpy(res.data + 32 - decoded_bytes.size(), decoded_bytes.data(), decoded_bytes.size());
|
||||
return res;
|
||||
}
|
||||
|
||||
void test_make_template(const std::string& input_hex, unsigned int nbits, const std::string& expected_hex)
|
||||
{
|
||||
const crypto::hash input = postfix_hex_to_hash(input_hex);
|
||||
const crypto::hash expected = postfix_hex_to_hash(expected_hex);
|
||||
const crypto::hash actual = cryptonote::make_hash32_loose_template(nbits, input);
|
||||
ASSERT_EQ(expected, actual);
|
||||
}
|
||||
}
|
||||
|
||||
TEST(LMDB, Traits)
|
||||
|
|
@ -401,4 +423,164 @@ TEST(LMDB, InvalidKeyIterator)
|
|||
EXPECT_FALSE(test2 != test1);
|
||||
}
|
||||
|
||||
TEST(LMDB_kanonymity, compare_hash32_reversed_nbits)
|
||||
{
|
||||
static constexpr size_t NUM_RANDOM_HASHES = 128;
|
||||
std::vector<crypto::hash> random_hashes;
|
||||
random_hashes.reserve(500);
|
||||
for (size_t i = 0; i < NUM_RANDOM_HASHES; ++i)
|
||||
random_hashes.push_back(crypto::rand<crypto::hash>());
|
||||
|
||||
bool r = true;
|
||||
|
||||
// Compare behavior of compare_hash32_reversed_nbits(nbits=256) to BlockchainLMDB::compare_hash32
|
||||
for (size_t i = 0; i < NUM_RANDOM_HASHES; ++i)
|
||||
{
|
||||
for (size_t j = 0; j < NUM_RANDOM_HASHES; ++j)
|
||||
{
|
||||
const crypto::hash& ha = random_hashes[i];
|
||||
const crypto::hash& hb = random_hashes[j];
|
||||
const MDB_val mva = {sizeof(crypto::hash), (void*)(&ha)};
|
||||
const MDB_val mvb = {sizeof(crypto::hash), (void*)(&hb)};
|
||||
const int expected = cryptonote::BlockchainLMDB::compare_hash32(&mva, &mvb);
|
||||
const int actual = cryptonote::compare_hash32_reversed_nbits(ha, hb, 256);
|
||||
if (actual != expected)
|
||||
{
|
||||
std::cerr << "Failed compare_hash32_reversed_nbits test case with hashes:" << std::endl;
|
||||
std::cerr << " " << epee::string_tools::pod_to_hex(ha) << std::endl;
|
||||
std::cerr << " " << epee::string_tools::pod_to_hex(hb) << std::endl;
|
||||
r = false;
|
||||
}
|
||||
EXPECT_EQ(expected, actual);
|
||||
}
|
||||
}
|
||||
|
||||
ASSERT_TRUE(r);
|
||||
|
||||
const auto cmp_byte_rev = [](const crypto::hash& ha, const crypto::hash& hb, unsigned int nbytes) -> int
|
||||
{
|
||||
if (nbytes > sizeof(crypto::hash)) throw std::logic_error("can't compare with nbytes too big");
|
||||
const uint8_t* va = (const uint8_t*)ha.data;
|
||||
const uint8_t* vb = (const uint8_t*)hb.data;
|
||||
for (size_t i = 31; nbytes; --i, --nbytes)
|
||||
{
|
||||
if (va[i] < vb[i]) return -1;
|
||||
else if (va[i] > vb[i]) return 1;
|
||||
}
|
||||
return 0;
|
||||
};
|
||||
|
||||
// Test partial hash compares w/o partial bytes
|
||||
for (size_t i = 0; i < NUM_RANDOM_HASHES; ++i)
|
||||
{
|
||||
for (size_t j = 0; j < NUM_RANDOM_HASHES; ++j)
|
||||
{
|
||||
for (unsigned int nbytes = 0; nbytes <= 32; ++nbytes)
|
||||
{
|
||||
const crypto::hash& ha = random_hashes[i];
|
||||
const crypto::hash& hb = random_hashes[j];
|
||||
const int expected = cmp_byte_rev(ha, hb, nbytes);
|
||||
const int actual = cryptonote::compare_hash32_reversed_nbits(ha, hb, nbytes * 8);
|
||||
if (actual != expected)
|
||||
{
|
||||
std::cerr << "Failed compare_hash32_reversed_nbits test case with hashes and args:" << std::endl;
|
||||
std::cerr << " " << epee::string_tools::pod_to_hex(ha) << std::endl;
|
||||
std::cerr << " " << epee::string_tools::pod_to_hex(hb) << std::endl;
|
||||
std::cerr << " nbytes=" << nbytes << std::endl;
|
||||
r = false;
|
||||
}
|
||||
EXPECT_EQ(expected, actual);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ASSERT_TRUE(r);
|
||||
|
||||
// Test partial hash compares w/ partial bytes
|
||||
for (size_t i = 0; i < NUM_RANDOM_HASHES; ++i)
|
||||
{
|
||||
const crypto::hash& ha = random_hashes[i];
|
||||
for (size_t modnbytes = 0; modnbytes < 32; ++modnbytes)
|
||||
{
|
||||
for (size_t modbitpos = 0; modbitpos < 8; ++modbitpos)
|
||||
{
|
||||
const size_t modbytepos = 31 - modnbytes;
|
||||
const uint8_t mask = 1 << modbitpos;
|
||||
const bool bit_was_zero = 0 == (static_cast<uint8_t>(ha.data[modbytepos]) & mask);
|
||||
const unsigned int modnbits = modnbytes * 8 + (7 - modbitpos);
|
||||
|
||||
// Create modified random hash by flipping one bit
|
||||
crypto::hash hb = ha;
|
||||
hb.data[modbytepos] = static_cast<uint8_t>(hb.data[modbytepos]) ^ mask;
|
||||
|
||||
for (unsigned int cmpnbits = 0; cmpnbits <= 256; ++cmpnbits)
|
||||
{
|
||||
const int expected = cmpnbits <= modnbits ? 0 : bit_was_zero ? -1 : 1;
|
||||
const int actual = cryptonote::compare_hash32_reversed_nbits(ha, hb, cmpnbits);
|
||||
if (actual != expected)
|
||||
{
|
||||
std::cerr << "Failed compare_hash32_reversed_nbits test case with hashes and args:" << std::endl;
|
||||
std::cerr << " " << epee::string_tools::pod_to_hex(ha) << std::endl;
|
||||
std::cerr << " " << epee::string_tools::pod_to_hex(hb) << std::endl;
|
||||
std::cerr << " modnbytes=" << modnbytes << std::endl;
|
||||
std::cerr << " modbitpos=" << modbitpos << std::endl;
|
||||
std::cerr << " cmpnbits=" << cmpnbits << std::endl;
|
||||
r = false;
|
||||
}
|
||||
EXPECT_EQ(expected, actual);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ASSERT_TRUE(r);
|
||||
|
||||
// Test equality
|
||||
for (size_t i = 0; i < NUM_RANDOM_HASHES; ++i)
|
||||
{
|
||||
const crypto::hash& ha = random_hashes[i];
|
||||
for (unsigned int nbits = 0; nbits <= 256; ++nbits)
|
||||
{
|
||||
const int actual = cryptonote::compare_hash32_reversed_nbits(ha, ha, nbits);
|
||||
if (actual)
|
||||
{
|
||||
std::cerr << "Failed compare_hash32_reversed_nbits test case with hash and args:" << std::endl;
|
||||
std::cerr << " " << epee::string_tools::pod_to_hex(ha) << std::endl;
|
||||
std::cerr << " nbits=" << nbits << std::endl;
|
||||
r = false;
|
||||
}
|
||||
EXPECT_EQ(0, actual);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
TEST(LMDB_kanonymity, make_hash32_loose_template)
|
||||
{
|
||||
const std::string example_1 = "0abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456789";
|
||||
|
||||
test_make_template(example_1, 0, "");
|
||||
|
||||
test_make_template(example_1, 1, "80");
|
||||
test_make_template(example_1, 2, "80");
|
||||
test_make_template(example_1, 3, "80");
|
||||
test_make_template(example_1, 4, "80");
|
||||
test_make_template(example_1, 5, "88");
|
||||
test_make_template(example_1, 6, "88");
|
||||
test_make_template(example_1, 7, "88");
|
||||
test_make_template(example_1, 8, "89");
|
||||
|
||||
test_make_template(example_1, 9, "0089");
|
||||
test_make_template(example_1, 10, "4089");
|
||||
test_make_template(example_1, 11, "6089");
|
||||
test_make_template(example_1, 12, "6089");
|
||||
test_make_template(example_1, 13, "6089");
|
||||
test_make_template(example_1, 14, "6489");
|
||||
test_make_template(example_1, 15, "6689");
|
||||
test_make_template(example_1, 16, "6789");
|
||||
|
||||
test_make_template(example_1, 32, "23456789");
|
||||
test_make_template(example_1, 64, "0abcdef123456789");
|
||||
test_make_template(example_1, 128, "0abcdef1234567890abcdef123456789");
|
||||
test_make_template(example_1, 256, example_1);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -590,6 +590,18 @@ class Daemon(object):
|
|||
}
|
||||
return self.rpc.send_json_rpc_request(flush_cache)
|
||||
|
||||
def get_txids_loose(self, txid_template, num_matching_bits):
|
||||
get_txids_loose = {
|
||||
'method': 'get_txids_loose',
|
||||
'params': {
|
||||
'txid_template': txid_template,
|
||||
'num_matching_bits': num_matching_bits
|
||||
},
|
||||
'jsonrpc': '2.0',
|
||||
'id': '0'
|
||||
}
|
||||
return self.rpc.send_json_rpc_request(get_txids_loose)
|
||||
|
||||
def sync_txpool(self):
|
||||
sync_txpool = {
|
||||
'method': 'sync_txpool',
|
||||
|
|
|
|||
Loading…
Reference in a new issue