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rct: rework v2 txes into prunable and non prunable data

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Nothing is pruned, but this allows easier changes later.
This commit is contained in:
moneromooo-monero 2016-08-09 21:34:09 +01:00
parent d93746b6d3
commit 93f5c625f0
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
8 changed files with 154 additions and 91 deletions
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41
src/cryptonote_core/cryptonote_format_utils.cpp
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@ -101,7 +101,7 @@ namespace cryptonote
CHECK_AND_ASSERT_MES(r, false, "Failed to parse transaction from blob");
//TODO: validate tx
crypto::cn_fast_hash(tx_blob.data(), tx_blob.size(), tx_hash);
get_transaction_hash(tx, tx_hash);
get_transaction_prefix_hash(tx, tx_prefix_hash);
return true;
}
@ -905,20 +905,49 @@ namespace cryptonote
crypto::hash get_transaction_hash(const transaction& t)
{
crypto::hash h = null_hash;
size_t blob_size = 0;
get_object_hash(t, h, blob_size);
get_transaction_hash(t, h, NULL);
return h;
}
//---------------------------------------------------------------
bool get_transaction_hash(const transaction& t, crypto::hash& res)
{
size_t blob_size = 0;
return get_object_hash(t, res, blob_size);
return get_transaction_hash(t, res, NULL);
}
//---------------------------------------------------------------
bool get_transaction_hash(const transaction& t, crypto::hash& res, size_t* blob_size)
{
// v1 transactions hash the entire blob
if (t.version == 1)
{
size_t ignored_blob_size, &blob_size_ref = blob_size ? *blob_size : ignored_blob_size;
return get_object_hash(t, res, blob_size_ref);
}
// v2 transactions hash different parts together, than hash the set of those hashes
crypto::hash hashes[3];
// prefix
get_transaction_prefix_hash(t, hashes[0]);
// base rct data
get_blob_hash(t_serializable_object_to_blob((const rct::rctSigBase&)t.rct_signatures), hashes[1]);
// prunable rct data
get_blob_hash(t_serializable_object_to_blob(t.rct_signatures.p), hashes[2]);
// the tx hash is the hash of the 3 hashes
res = cn_fast_hash(hashes, sizeof(hashes));
// we still need the size
if (blob_size)
*blob_size = get_object_blobsize(t);
return true;
}
//---------------------------------------------------------------
bool get_transaction_hash(const transaction& t, crypto::hash& res, size_t& blob_size)
{
return get_object_hash(t, res, blob_size);
return get_transaction_hash(t, res, &blob_size);
}
//---------------------------------------------------------------
blobdata get_block_hashing_blob(const block& b)