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cryptonote_basic: cache prunable hash for pruned txs

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This commit is contained in:
Samy
2026-09-01 02:52:19 +02:00
parent 8e99188c5e
commit 70ac70101a
2 changed files with 29 additions and 0 deletions
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src/cryptonote_basic/cryptonote_format_utils.cpp
+3
View File
@@ -1508,7 +1508,10 @@ namespace cryptonote
if (t.rct_signatures.type == rct::RCTTypeNull)
hashes[2] = crypto::null_hash;
else
{
hashes[2] = pruned_data_hash;
t.set_prunable_hash(pruned_data_hash);
}
// the tx hash is the hash of the 3 hashes
res = cn_fast_hash(hashes, sizeof(hashes));
tests/unit_tests/cryptonote_format_utils.cpp
+26
View File
@@ -169,6 +169,32 @@ TEST(cn_format_utils, payment_id_tx_extra_nonce_rejects_wrong_tag_or_size)
EXPECT_FALSE(cryptonote::get_encrypted_payment_id_from_tx_extra_nonce(wrong_size, parsed_encrypted_payment_id));
}
TEST(cn_format_utils, pruned_transaction_hash_caches_prunable_hash)
{
const auto tx_path = unit_test::data_dir / "txs" / "bpp_tx_e89415.bin";
cryptonote::blobdata tx_blob;
ASSERT_TRUE(epee::file_io_utils::load_file_to_string(tx_path.string(), tx_blob));
cryptonote::transaction tx;
ASSERT_TRUE(cryptonote::parse_and_validate_tx_from_blob(tx_blob, tx));
const cryptonote::blobdata_ref tx_blob_ref{tx_blob};
const crypto::hash tx_hash = cryptonote::get_transaction_hash(tx);
const crypto::hash prunable_hash = cryptonote::get_transaction_prunable_hash(tx, &tx_blob_ref);
cryptonote::blobdata pruned_tx_blob = tx_blob;
ASSERT_TRUE(cryptonote::prune_transaction_blob(pruned_tx_blob));
cryptonote::transaction pruned_tx;
ASSERT_TRUE(cryptonote::parse_and_validate_tx_base_from_blob(pruned_tx_blob, pruned_tx));
ASSERT_NE(rct::RCTTypeNull, pruned_tx.rct_signatures.type);
crypto::hash reconstructed_hash;
ASSERT_TRUE(cryptonote::get_pruned_transaction_hash(pruned_tx, prunable_hash, reconstructed_hash));
EXPECT_EQ(tx_hash, reconstructed_hash);
ASSERT_TRUE(pruned_tx.is_prunable_hash_valid());
const cryptonote::blobdata_ref pruned_tx_blob_ref{pruned_tx_blob};
EXPECT_EQ(prunable_hash, cryptonote::get_transaction_prunable_hash(pruned_tx, &pruned_tx_blob_ref));
}
TEST(cn_format_utils, block_longhash_202612_arbitrary_blob)
{
const cryptonote::blobdata blob = "not the historical block 202612 hashing blob";