verRctNonSemanticsSimpleCached: fix fragility
This commit is contained in:
Jeffrey Ryan
jeffro256
parent
99be9a044f
commit
c59e0096b6
@ -248,6 +248,7 @@ namespace config
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const unsigned char HASH_KEY_MM_SLOT = 'm';
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const constexpr char HASH_KEY_MULTISIG_TX_PRIVKEYS_SEED[] = "multisig_tx_privkeys_seed";
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const constexpr char HASH_KEY_MULTISIG_TX_PRIVKEYS[] = "multisig_tx_privkeys";
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const constexpr char HASH_KEY_TXHASH_AND_MIXRING[] = "txhash_and_mixring";
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// Multisig
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const uint32_t MULTISIG_MAX_SIGNERS{16};
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@ -31,7 +31,9 @@ set(cryptonote_core_sources
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cryptonote_core.cpp
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tx_pool.cpp
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tx_sanity_check.cpp
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cryptonote_tx_utils.cpp)
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cryptonote_tx_utils.cpp
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tx_verification_utils.cpp
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)
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set(cryptonote_core_headers)
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@ -57,6 +57,7 @@
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#include "common/notify.h"
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#include "common/varint.h"
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#include "common/pruning.h"
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#include "common/data_cache.h"
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#include "time_helper.h"
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#undef MONERO_DEFAULT_LOG_CATEGORY
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@ -98,7 +99,8 @@ Blockchain::Blockchain(tx_memory_pool& tx_pool) :
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m_difficulty_for_next_block(1),
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m_btc_valid(false),
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m_batch_success(true),
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m_prepare_height(0)
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m_prepare_height(0),
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m_rct_ver_cache()
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{
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LOG_PRINT_L3("Blockchain::" << __func__);
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}
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@ -3211,7 +3213,7 @@ bool Blockchain::have_tx_keyimges_as_spent(const transaction &tx) const
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}
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return false;
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}
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bool Blockchain::expand_transaction_2(transaction &tx, const crypto::hash &tx_prefix_hash, const std::vector<std::vector<rct::ctkey>> &pubkeys) const
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bool Blockchain::expand_transaction_2(transaction &tx, const crypto::hash &tx_prefix_hash, const std::vector<std::vector<rct::ctkey>> &pubkeys)
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{
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PERF_TIMER(expand_transaction_2);
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CHECK_AND_ASSERT_MES(tx.version == 2, false, "Transaction version is not 2");
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@ -3534,6 +3536,13 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
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false, "Transaction spends at least one output which is too young");
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}
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// Warn that new RCT types are present, and thus the cache is not being used effectively
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static constexpr const std::uint8_t RCT_CACHE_TYPE = rct::RCTTypeBulletproofPlus;
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if (tx.rct_signatures.type > RCT_CACHE_TYPE)
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{
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MWARNING("RCT cache is not caching new verification results. Please update RCT_CACHE_TYPE!");
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}
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if (tx.version == 1)
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{
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if (threads > 1)
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@ -3555,12 +3564,6 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
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}
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else
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{
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if (!expand_transaction_2(tx, tx_prefix_hash, pubkeys))
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{
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MERROR_VER("Failed to expand rct signatures!");
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return false;
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}
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// from version 2, check ringct signatures
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// obviously, the original and simple rct APIs use a mixRing that's indexes
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// in opposite orders, because it'd be too simple otherwise...
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@ -3578,61 +3581,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
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case rct::RCTTypeCLSAG:
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case rct::RCTTypeBulletproofPlus:
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{
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// check all this, either reconstructed (so should really pass), or not
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{
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if (pubkeys.size() != rv.mixRing.size())
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{
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MERROR_VER("Failed to check ringct signatures: mismatched pubkeys/mixRing size");
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return false;
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}
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for (size_t i = 0; i < pubkeys.size(); ++i)
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{
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if (pubkeys[i].size() != rv.mixRing[i].size())
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{
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MERROR_VER("Failed to check ringct signatures: mismatched pubkeys/mixRing size");
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return false;
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}
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}
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for (size_t n = 0; n < pubkeys.size(); ++n)
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{
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for (size_t m = 0; m < pubkeys[n].size(); ++m)
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{
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if (pubkeys[n][m].dest != rct::rct2pk(rv.mixRing[n][m].dest))
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{
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MERROR_VER("Failed to check ringct signatures: mismatched pubkey at vin " << n << ", index " << m);
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return false;
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}
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if (pubkeys[n][m].mask != rct::rct2pk(rv.mixRing[n][m].mask))
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{
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MERROR_VER("Failed to check ringct signatures: mismatched commitment at vin " << n << ", index " << m);
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return false;
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}
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}
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}
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}
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const size_t n_sigs = rct::is_rct_clsag(rv.type) ? rv.p.CLSAGs.size() : rv.p.MGs.size();
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if (n_sigs != tx.vin.size())
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{
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MERROR_VER("Failed to check ringct signatures: mismatched MGs/vin sizes");
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return false;
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}
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for (size_t n = 0; n < tx.vin.size(); ++n)
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{
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bool error;
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if (rct::is_rct_clsag(rv.type))
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error = memcmp(&boost::get<txin_to_key>(tx.vin[n]).k_image, &rv.p.CLSAGs[n].I, 32);
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else
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error = rv.p.MGs[n].II.empty() || memcmp(&boost::get<txin_to_key>(tx.vin[n]).k_image, &rv.p.MGs[n].II[0], 32);
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if (error)
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{
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MERROR_VER("Failed to check ringct signatures: mismatched key image");
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return false;
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}
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}
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if (!rct::verRctNonSemanticsSimpleCached(rv))
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if (!ver_rct_non_semantics_simple_cached(tx, pubkeys, m_rct_ver_cache, RCT_CACHE_TYPE))
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{
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MERROR_VER("Failed to check ringct signatures!");
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return false;
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@ -3641,6 +3590,12 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
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}
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case rct::RCTTypeFull:
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{
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if (!expand_transaction_2(tx, tx_prefix_hash, pubkeys))
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{
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MERROR_VER("Failed to expand rct signatures!");
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return false;
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}
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// check all this, either reconstructed (so should really pass), or not
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{
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bool size_matches = true;
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@ -57,6 +57,7 @@
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#include "rpc/core_rpc_server_commands_defs.h"
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#include "cryptonote_basic/difficulty.h"
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#include "cryptonote_tx_utils.h"
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#include "tx_verification_utils.h"
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#include "cryptonote_basic/verification_context.h"
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#include "crypto/hash.h"
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#include "checkpoints/checkpoints.h"
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@ -596,6 +597,15 @@ namespace cryptonote
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*/
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bool store_blockchain();
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/**
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* @brief expands v2 transaction data from blockchain
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*
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* RingCT transactions do not transmit some of their data if it
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* can be reconstituted by the receiver. This function expands
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* that implicit data.
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*/
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static bool expand_transaction_2(transaction &tx, const crypto::hash &tx_prefix_hash, const std::vector<std::vector<rct::ctkey>> &pubkeys);
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/**
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* @brief validates a transaction's inputs
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*
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@ -1222,6 +1232,9 @@ namespace cryptonote
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uint64_t m_prepare_nblocks;
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std::vector<block> *m_prepare_blocks;
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// cache for verifying transaction RCT non semantics
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mutable rct_ver_cache_t m_rct_ver_cache;
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/**
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* @brief collects the keys for all outputs being "spent" as an input
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*
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@ -1574,15 +1587,6 @@ namespace cryptonote
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*/
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void load_compiled_in_block_hashes(const GetCheckpointsCallback& get_checkpoints);
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/**
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* @brief expands v2 transaction data from blockchain
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*
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* RingCT transactions do not transmit some of their data if it
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* can be reconstituted by the receiver. This function expands
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* that implicit data.
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*/
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bool expand_transaction_2(transaction &tx, const crypto::hash &tx_prefix_hash, const std::vector<std::vector<rct::ctkey>> &pubkeys) const;
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/**
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* @brief invalidates any cached block template
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*/
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167
src/cryptonote_core/tx_verification_utils.cpp
Normal file
167
src/cryptonote_core/tx_verification_utils.cpp
Normal file
@ -0,0 +1,167 @@
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// Copyright (c) 2023, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "cryptonote_core/blockchain.h"
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#include "cryptonote_core/tx_verification_utils.h"
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#include "ringct/rctSigs.h"
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#undef MONERO_DEFAULT_LOG_CATEGORY
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#define MONERO_DEFAULT_LOG_CATEGORY "blockchain"
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#define VER_ASSERT(cond, msgexpr) CHECK_AND_ASSERT_MES(cond, false, msgexpr)
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using namespace cryptonote;
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// Do RCT expansion, then do post-expansion sanity checks, then do full non-semantics verification.
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static bool expand_tx_and_ver_rct_non_sem(transaction& tx, const rct::ctkeyM& mix_ring)
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{
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// Pruned transactions can not be expanded and verified because they are missing RCT data
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VER_ASSERT(!tx.pruned, "Pruned transaction will not pass verRctNonSemanticsSimple");
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// Calculate prefix hash
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const crypto::hash tx_prefix_hash = get_transaction_prefix_hash(tx);
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// Expand mixring, tx inputs, tx key images, prefix hash message, etc into the RCT sig
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const bool exp_res = Blockchain::expand_transaction_2(tx, tx_prefix_hash, mix_ring);
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VER_ASSERT(exp_res, "Failed to expand rct signatures!");
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const rct::rctSig& rv = tx.rct_signatures;
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// Check that expanded RCT mixring == input mixring
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VER_ASSERT(rv.mixRing == mix_ring, "Failed to check ringct signatures: mismatched pubkeys/mixRing");
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// Check CLSAG/MLSAG size against transaction input
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const size_t n_sigs = rct::is_rct_clsag(rv.type) ? rv.p.CLSAGs.size() : rv.p.MGs.size();
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VER_ASSERT(n_sigs == tx.vin.size(), "Failed to check ringct signatures: mismatched input sigs/vin sizes");
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// For each input, check that the key images were copied into the expanded RCT sig correctly
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for (size_t n = 0; n < n_sigs; ++n)
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{
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const crypto::key_image& nth_vin_image = boost::get<txin_to_key>(tx.vin[n]).k_image;
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if (rct::is_rct_clsag(rv.type))
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{
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const bool ki_match = 0 == memcmp(&nth_vin_image, &rv.p.CLSAGs[n].I, 32);
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VER_ASSERT(ki_match, "Failed to check ringct signatures: mismatched CLSAG key image");
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}
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else
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{
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const bool mg_nonempty = !rv.p.MGs[n].II.empty();
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VER_ASSERT(mg_nonempty, "Failed to check ringct signatures: missing MLSAG key image");
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const bool ki_match = 0 == memcmp(&nth_vin_image, &rv.p.MGs[n].II[0], 32);
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VER_ASSERT(ki_match, "Failed to check ringct signatures: mismatched MLSAG key image");
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}
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}
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// Mix ring data is now known to be correctly incorporated into the RCT sig inside tx.
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return rct::verRctNonSemanticsSimple(rv);
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}
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// Create a unique identifier for pair of tx blob + mix ring
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static crypto::hash calc_tx_mixring_hash(const transaction& tx, const rct::ctkeyM& mix_ring)
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{
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std::stringstream ss;
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// Start with domain seperation
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ss << config::HASH_KEY_TXHASH_AND_MIXRING;
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// Then add TX hash
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const crypto::hash tx_hash = get_transaction_hash(tx);
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ss.write(tx_hash.data, sizeof(crypto::hash));
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// Then serialize mix ring
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binary_archive<true> ar(ss);
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::do_serialize(ar, const_cast<rct::ctkeyM&>(mix_ring));
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// Calculate hash of TX hash and mix ring blob
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crypto::hash tx_and_mixring_hash;
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get_blob_hash(ss.str(), tx_and_mixring_hash);
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return tx_and_mixring_hash;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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namespace cryptonote
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{
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bool ver_rct_non_semantics_simple_cached
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(
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transaction& tx,
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const rct::ctkeyM& mix_ring,
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rct_ver_cache_t& cache,
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const std::uint8_t rct_type_to_cache
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)
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{
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// Hello future Monero dev! If you got this assert, read the following carefully:
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//
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// For this version of RCT, the way we guaranteed that verification caches do not generate false
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// positives (and thus possibly enabling double spends) is we take a hash of two things. One,
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// we use get_transaction_hash() which gives us a (cryptographically secure) unique
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// representation of all "knobs" controlled by the possibly malicious constructor of the
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// transaction. Two, we take a hash of all *previously validated* blockchain data referenced by
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// this transaction which is required to validate the ring signature. In our case, this is the
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// mixring. Future versions of the protocol may differ in this regard, but if this assumptions
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// holds true in the future, enable the verification hash by modifying the `untested_tx`
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// condition below.
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const bool untested_tx = tx.version > 2 || tx.rct_signatures.type > rct::RCTTypeBulletproofPlus;
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VER_ASSERT(!untested_tx, "Unknown TX type. Make sure RCT cache works correctly with this type and then enable it in the code here.");
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// Don't cache older (or newer) rctSig types
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// This cache only makes sense when it caches data from mempool first,
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// so only "current fork version-enabled" RCT types need to be cached
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if (tx.rct_signatures.type != rct_type_to_cache)
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{
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MDEBUG("RCT cache: tx " << get_transaction_hash(tx) << " skipped");
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return expand_tx_and_ver_rct_non_sem(tx, mix_ring);
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}
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// Generate unique hash for tx+mix_ring pair
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const crypto::hash tx_mixring_hash = calc_tx_mixring_hash(tx, mix_ring);
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// Search cache for successful verification of same TX + mix ring combination
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if (cache.has(tx_mixring_hash))
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{
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MDEBUG("RCT cache: tx " << get_transaction_hash(tx) << " hit");
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return true;
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}
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// We had a cache miss, so now we must expand the mix ring and do full verification
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MDEBUG("RCT cache: tx " << get_transaction_hash(tx) << " missed");
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if (!expand_tx_and_ver_rct_non_sem(tx, mix_ring))
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{
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return false;
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}
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// At this point, the TX RCT verified successfully, so add it to the cache and return true
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cache.add(tx_mixring_hash);
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return true;
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}
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} // namespace cryptonote
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78
src/cryptonote_core/tx_verification_utils.h
Normal file
78
src/cryptonote_core/tx_verification_utils.h
Normal file
@ -0,0 +1,78 @@
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// Copyright (c) 2023, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
|
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// permitted provided that the following conditions are met:
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//
|
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// 1. Redistributions of source code must retain the above copyright notice, this list of
|
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// conditions and the following disclaimer.
|
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//
|
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
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// of conditions and the following disclaimer in the documentation and/or other
|
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// materials provided with the distribution.
|
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//
|
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// 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
|
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// prior written permission.
|
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//
|
||||
// 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
|
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#include "common/data_cache.h"
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#include "cryptonote_basic/cryptonote_basic.h"
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namespace cryptonote
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{
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// Modifying this value should not affect consensus. You can adjust it for performance needs
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static constexpr const size_t RCT_VER_CACHE_SIZE = 8192;
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using rct_ver_cache_t = ::tools::data_cache<::crypto::hash, RCT_VER_CACHE_SIZE>;
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/**
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* @brief Cached version of rct::verRctNonSemanticsSimple
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*
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* This function will not affect how the transaction is serialized and it will never modify the
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* transaction prefix.
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||||
*
|
||||
* The reference to tx is mutable since the transaction's ring signatures may be expanded by
|
||||
* Blockchain::expand_transaction_2. However, on cache hits, the transaction will not be
|
||||
* expanded. This means that the caller does not need to call expand_transaction_2 on this
|
||||
* transaction before passing it; the transaction will not successfully verify with "old" RCT data
|
||||
* if the transaction has been otherwise modified since the last verification.
|
||||
*
|
||||
* But, if cryptonote::get_transaction_hash(tx) returns a "stale" hash, this function is not
|
||||
* guaranteed to work. So make sure that the cryptonote::transaction passed has not had
|
||||
* modifications to it since the last time its hash was fetched without properly invalidating the
|
||||
* hashes.
|
||||
*
|
||||
* rct_type_to_cache can be any RCT version value as long as rct::verRctNonSemanticsSimple works for
|
||||
* this RCT version, but for most applications, it doesn't make sense to not make this version
|
||||
* the "current" RCT version (i.e. the version that transactions in the mempool are).
|
||||
*
|
||||
* @param tx transaction which contains RCT signature to verify
|
||||
* @param mix_ring mixring referenced by this tx. THIS DATA MUST BE PREVIOUSLY VALIDATED
|
||||
* @param cache saves tx+mixring hashes used to cache calls
|
||||
* @param rct_type_to_cache Only RCT sigs with version (e.g. RCTTypeBulletproofPlus) will be cached
|
||||
* @return true when verRctNonSemanticsSimple() w/ expanded tx.rct_signatures would return true
|
||||
* @return false when verRctNonSemanticsSimple() w/ expanded tx.rct_signatures would return false
|
||||
*/
|
||||
bool ver_rct_non_semantics_simple_cached
|
||||
(
|
||||
transaction& tx,
|
||||
const rct::ctkeyM& mix_ring,
|
||||
rct_ver_cache_t& cache,
|
||||
std::uint8_t rct_type_to_cache
|
||||
);
|
||||
|
||||
} // namespace cryptonote
|
||||
@ -30,7 +30,6 @@
|
||||
|
||||
#include "misc_log_ex.h"
|
||||
#include "misc_language.h"
|
||||
#include "common/data_cache.h"
|
||||
#include "common/perf_timer.h"
|
||||
#include "common/threadpool.h"
|
||||
#include "common/util.h"
|
||||
@ -1579,42 +1578,6 @@ namespace rct {
|
||||
}
|
||||
}
|
||||
|
||||
bool verRctNonSemanticsSimpleCached(const rctSig & rv)
|
||||
{
|
||||
// Hello future Monero dev! If you got this assert, read the following carefully:
|
||||
//
|
||||
// RCT cache assumes that this function will serialize and hash all rv's fields used for RingCT verification
|
||||
// If you're about to add a new RCTType here, first you must check that binary_archive serialization writes all rv's fields to the binary blob
|
||||
// If it's not the case, rewrite this function to serialize everything, even some "temporary" fields which are not serialized normally
|
||||
CHECK_AND_ASSERT_MES_L1(rv.type <= RCTTypeBulletproofPlus, false, "Unknown RCT type. Make sure RCT cache works correctly with this type and then enable it in the code here.");
|
||||
|
||||
// Don't cache older (or newer) rctSig types
|
||||
// This cache only makes sense when it caches data from mempool first,
|
||||
// so only "current fork version-enabled" RCT types need to be cached
|
||||
if (rv.type != RCTTypeBulletproofPlus)
|
||||
return verRctNonSemanticsSimple(rv);
|
||||
|
||||
// Get the hash of rv
|
||||
std::stringstream ss;
|
||||
binary_archive<true> ar(ss);
|
||||
|
||||
::do_serialize(ar, const_cast<rctSig&>(rv));
|
||||
|
||||
crypto::hash h;
|
||||
cryptonote::get_blob_hash(ss.str(), h);
|
||||
|
||||
static tools::data_cache<crypto::hash, 8192> cache;
|
||||
|
||||
if (cache.has(h))
|
||||
return true;
|
||||
|
||||
const bool res = verRctNonSemanticsSimple(rv);
|
||||
if (res)
|
||||
cache.add(h);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
//RingCT protocol
|
||||
//genRct:
|
||||
// creates an rctSig with all data necessary to verify the rangeProofs and that the signer owns one of the
|
||||
|
||||
@ -132,7 +132,6 @@ namespace rct {
|
||||
bool verRctSemanticsSimple(const rctSig & rv);
|
||||
bool verRctSemanticsSimple(const std::vector<const rctSig*> & rv);
|
||||
bool verRctNonSemanticsSimple(const rctSig & rv);
|
||||
bool verRctNonSemanticsSimpleCached(const rctSig & rv);
|
||||
static inline bool verRctSimple(const rctSig & rv) { return verRctSemanticsSimple(rv) && verRctNonSemanticsSimple(rv); }
|
||||
xmr_amount decodeRct(const rctSig & rv, const key & sk, unsigned int i, key & mask, hw::device &hwdev);
|
||||
xmr_amount decodeRct(const rctSig & rv, const key & sk, unsigned int i, hw::device &hwdev);
|
||||
|
||||
@ -97,6 +97,14 @@ namespace rct {
|
||||
struct ctkey {
|
||||
key dest;
|
||||
key mask; //C here if public
|
||||
|
||||
bool operator==(const ctkey &other) const {
|
||||
return (dest == other.dest) && (mask == other.mask);
|
||||
}
|
||||
|
||||
bool operator!=(const ctkey &other) const {
|
||||
return !(*this == other);
|
||||
}
|
||||
};
|
||||
typedef std::vector<ctkey> ctkeyV;
|
||||
typedef std::vector<ctkeyV> ctkeyM;
|
||||
|
||||
BIN
tests/data/txs/bpp_tx_e89415.bin
Normal file
BIN
tests/data/txs/bpp_tx_e89415.bin
Normal file
Binary file not shown.
@ -91,6 +91,7 @@ set(unit_tests_sources
|
||||
unbound.cpp
|
||||
uri.cpp
|
||||
varint.cpp
|
||||
ver_rct_non_semantics_simple_cached.cpp
|
||||
ringct.cpp
|
||||
output_selection.cpp
|
||||
vercmp.cpp
|
||||
|
||||
426
tests/unit_tests/ver_rct_non_semantics_simple_cached.cpp
Normal file
426
tests/unit_tests/ver_rct_non_semantics_simple_cached.cpp
Normal file
@ -0,0 +1,426 @@
|
||||
// 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.
|
||||
|
||||
#include <sstream>
|
||||
|
||||
#define IN_UNIT_TESTS // To access Blockchain::{expand_transaction_2, verRctNonSemanticsSimpleCached}
|
||||
|
||||
#include "gtest/gtest.h"
|
||||
#include "unit_tests_utils.h"
|
||||
|
||||
#include "cryptonote_basic/cryptonote_format_utils.h"
|
||||
#include "cryptonote_core/blockchain.h"
|
||||
#include "file_io_utils.h"
|
||||
#include "misc_log_ex.h"
|
||||
#include "ringct/rctSigs.h"
|
||||
|
||||
namespace cryptonote
|
||||
{
|
||||
// declaration not provided in cryptonote_format_utils.h, but definition is not static ;)
|
||||
bool expand_transaction_1(transaction &tx, bool base_only);
|
||||
}
|
||||
|
||||
namespace
|
||||
{
|
||||
/**
|
||||
* @brief Make rct::ctkey from hex string representation of destionation and mask
|
||||
*
|
||||
* @param dest_hex
|
||||
* @param mask_hex
|
||||
* @return rct::ctkey
|
||||
*/
|
||||
static rct::ctkey make_ctkey(const char* dest_hex, const char* mask_hex)
|
||||
{
|
||||
rct::key dest;
|
||||
rct::key mask;
|
||||
CHECK_AND_ASSERT_THROW_MES(epee::from_hex::to_buffer(epee::as_mut_byte_span(dest), dest_hex), "dest bad hex: " << dest_hex);
|
||||
CHECK_AND_ASSERT_THROW_MES(epee::from_hex::to_buffer(epee::as_mut_byte_span(mask), mask_hex), "mask bad hex: " << mask_hex);
|
||||
return {dest, mask};
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
static std::string stringify_with_do_serialize(const T& t)
|
||||
{
|
||||
std::stringstream ss;
|
||||
binary_archive<true> ar(ss);
|
||||
CHECK_AND_ASSERT_THROW_MES(ar.good(), "Archiver is not in a good state. This shouldn't happen!");
|
||||
::do_serialize(ar, const_cast<T&>(t));
|
||||
return ss.str();
|
||||
}
|
||||
|
||||
static bool check_tx_is_expanded(const cryptonote::transaction& tx, const rct::ctkeyM& pubkeys)
|
||||
{
|
||||
// Ripped from cryptonote_core/blockchain.cpp
|
||||
|
||||
const rct::rctSig& rv = tx.rct_signatures;
|
||||
|
||||
if (pubkeys.size() != rv.mixRing.size())
|
||||
{
|
||||
MERROR("Failed to check ringct signatures: mismatched pubkeys/mixRing size");
|
||||
return false;
|
||||
}
|
||||
for (size_t i = 0; i < pubkeys.size(); ++i)
|
||||
{
|
||||
if (pubkeys[i].size() != rv.mixRing[i].size())
|
||||
{
|
||||
MERROR("Failed to check ringct signatures: mismatched pubkeys/mixRing size");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
for (size_t n = 0; n < pubkeys.size(); ++n)
|
||||
{
|
||||
for (size_t m = 0; m < pubkeys[n].size(); ++m)
|
||||
{
|
||||
if (pubkeys[n][m].dest != rct::rct2pk(rv.mixRing[n][m].dest))
|
||||
{
|
||||
MERROR("Failed to check ringct signatures: mismatched pubkey at vin " << n << ", index " << m);
|
||||
return false;
|
||||
}
|
||||
if (pubkeys[n][m].mask != rct::rct2pk(rv.mixRing[n][m].mask))
|
||||
{
|
||||
MERROR("Failed to check ringct signatures: mismatched commitment at vin " << n << ", index " << m);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const size_t n_sigs = rct::is_rct_clsag(rv.type) ? rv.p.CLSAGs.size() : rv.p.MGs.size();
|
||||
if (n_sigs != tx.vin.size())
|
||||
{
|
||||
MERROR("Failed to check ringct signatures: mismatched MGs/vin sizes");
|
||||
return false;
|
||||
}
|
||||
for (size_t n = 0; n < tx.vin.size(); ++n)
|
||||
{
|
||||
bool error;
|
||||
if (rct::is_rct_clsag(rv.type))
|
||||
error = memcmp(&boost::get<cryptonote::txin_to_key>(tx.vin[n]).k_image, &rv.p.CLSAGs[n].I, 32);
|
||||
else
|
||||
error = rv.p.MGs[n].II.empty() || memcmp(&boost::get<cryptonote::txin_to_key>(tx.vin[n]).k_image, &rv.p.MGs[n].II[0], 32);
|
||||
if (error)
|
||||
{
|
||||
MERROR("Failed to check ringct signatures: mismatched key image");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Perform expand_transaction_1 and Blockchain::expand_transaction_2 on a certain transaction
|
||||
*/
|
||||
static void expand_transaction_fully(cryptonote::transaction& tx, const rct::ctkeyM& input_pubkeys)
|
||||
{
|
||||
const crypto::hash tx_prefix_hash = cryptonote::get_transaction_prefix_hash(tx);
|
||||
CHECK_AND_ASSERT_THROW_MES(cryptonote::expand_transaction_1(tx, false), "expand 1 failed");
|
||||
CHECK_AND_ASSERT_THROW_MES
|
||||
(
|
||||
cryptonote::Blockchain::expand_transaction_2(tx, tx_prefix_hash, input_pubkeys),
|
||||
"expand 2 failed"
|
||||
);
|
||||
CHECK_AND_ASSERT_THROW_MES(!memcmp(&tx_prefix_hash, &tx.rct_signatures.message, 32), "message check failed");
|
||||
CHECK_AND_ASSERT_THROW_MES(input_pubkeys == tx.rct_signatures.mixRing, "mixring check failed");
|
||||
CHECK_AND_ASSERT_THROW_MES(check_tx_is_expanded(tx, input_pubkeys), "tx expansion check 2 failed");
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Mostly construct transaction from binary file and provided mix ring pubkeys
|
||||
*
|
||||
* Most important to us, this should populate the .rct_signatures.message and
|
||||
* .rct_signatures.mixRings fields of the transaction.
|
||||
*
|
||||
* @param file_name relative file path in unit test data directory
|
||||
* @param input_pubkeys manually retrived input pubkey destination / masks for each ring
|
||||
* @return cryptonote::transaction the expanded transaction
|
||||
*/
|
||||
static cryptonote::transaction expand_transaction_from_bin_file_and_pubkeys
|
||||
(
|
||||
const char* file_name,
|
||||
const rct::ctkeyM& input_pubkeys
|
||||
)
|
||||
{
|
||||
cryptonote::transaction transaction;
|
||||
|
||||
const boost::filesystem::path tx_json_path = unit_test::data_dir / file_name;
|
||||
std::string tx_blob;
|
||||
CHECK_AND_ASSERT_THROW_MES
|
||||
(
|
||||
epee::file_io_utils::load_file_to_string(tx_json_path.string(), tx_blob),
|
||||
"loading file to string failed"
|
||||
);
|
||||
|
||||
CHECK_AND_ASSERT_THROW_MES
|
||||
(
|
||||
cryptonote::parse_and_validate_tx_from_blob(tx_blob, transaction),
|
||||
"TX blob could not be parsed"
|
||||
);
|
||||
|
||||
expand_transaction_fully(transaction, input_pubkeys);
|
||||
|
||||
return transaction;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Return whether a modification changes blob resulting from do_serialize()
|
||||
*/
|
||||
template <typename T, class TModifier>
|
||||
static bool modification_changes_do_serialize
|
||||
(
|
||||
const T& og_obj,
|
||||
TModifier& obj_modifier_func,
|
||||
bool expected_change
|
||||
)
|
||||
{
|
||||
T modded_obj = og_obj;
|
||||
obj_modifier_func(modded_obj);
|
||||
const std::string og_blob = stringify_with_do_serialize(og_obj);
|
||||
const std::string modded_blob = stringify_with_do_serialize(modded_obj);
|
||||
const bool did_change = modded_blob != og_blob;
|
||||
if (did_change != expected_change)
|
||||
{
|
||||
const std::string og_hex = epee::to_hex::string(epee::strspan<uint8_t>(og_blob));
|
||||
const std::string modded_hex = epee::to_hex::string(epee::strspan<uint8_t>(modded_blob));
|
||||
MERROR("unexpected: modded_blob '" << modded_hex << "' vs og_blob ' << " << og_hex << "'");
|
||||
}
|
||||
return did_change;
|
||||
}
|
||||
|
||||
// Contains binary representation of mainnet transaction (height 2777777):
|
||||
// e89415b95564aa7e3587c91422756ba5303e727996e19c677630309a0d52a7ca
|
||||
static constexpr const char* tx1_file_name = "txs/bpp_tx_e89415.bin";
|
||||
|
||||
// This contains destination key / mask pairs for each output in the input ring of the above tx
|
||||
static const rct::ctkeyM tx1_input_pubkeys =
|
||||
{{
|
||||
make_ctkey("e50f476129d40af31e0938743f7f2d60e867aab31294f7acaf6e38f0976f0228", "51e788ddf5c95c124a7314d45a91b52d60db25a0572de9c2b4ec515aca3d4481"),
|
||||
make_ctkey("804245d067fcfe6cd66376db0571869989bc68b3e22a0f902109c7530df47a59", "c3cc65d3b3a05defaa05213dc3b0496f9b86dbeeefbff28db34b134b6ee3230b"),
|
||||
make_ctkey("527563a03b498e47732b815f5f0c5875a70e0fb71a37c88123f0f8686349fae4", "04417c03b397cd11e403275ec89cb0ab5b8476bb88470e9ae7208ea63dacf073"),
|
||||
make_ctkey("bffca8b5c7fe4235ba7136d6b5325f63df343dc147940b677f50217f8953bca6", "5cd8c5e54e07275422c9c5a9f4a7268d26c494ffba419e878b7e873a02ae2e76"),
|
||||
make_ctkey("1f73385ea74308aa78b5abf585faac14a5e78a6e23f0f68c9c14681108b28ef0", "5c02b3156daaa8ec476d3244439d90efa266f3e51cb9c8eb384d8b9a8efaa024"),
|
||||
make_ctkey("a2421eae8bb256644b34feeab48c6086c2c9feb40d2643436dc45e303eee8ab2", "787823abffa988b56d4a7b4a834630f71520220fd82fad035955e616ec095788"),
|
||||
make_ctkey("17d8d8dc1e1c25b7295f2eab44c4ccc08a629b8e8d781bbb6f9a51a9561bcd4c", "db1ea24be6947e03176a297160dba16d65f37751bb0ef2ba71a4590d12b61dfc"),
|
||||
make_ctkey("2c39348a9ab04dbabe3b5249819b7845ed8aaebd0d8eddd98bda0bf40753a398", "4e6cd25fbd10e2e040be84e3bf8043c612daeef625e66a5e5bcff88c9c46e82c"),
|
||||
make_ctkey("c4c97157f23b45c7084526aaa9958fe858bebe446a7efa22c491c439b74271b1", "e251db2c86193a11a5bffefffe48c20e3d92a8dc98cb3a2f41704e565bcd860a"),
|
||||
make_ctkey("d342045525139a8551bcdfa7aa0117d2ac2327cb6cf449ca59420c300e4471a5", "789c11f72060ad80f4cda5d89b24d49f9435bf765598dea7a91776e99f05f87c"),
|
||||
make_ctkey("9a972ccf2c74f648070b0be839749c98eca87166de401a6c1f59e64b938a46c1", "5444cbed5cec31fb6ed1612f815d292f2bf3d2ff584bbcd8e5201ec59670d414"),
|
||||
make_ctkey("49ccb806ccf5cbd74bae8d9fb2da8918ab61d0774ee6a6c3a6ccd237db22a088", "0c5db942fb44f29f6ef956e24db91f98a6de6e7288b0b04d01b8f260453d1431"),
|
||||
make_ctkey("74417e8d1483df2df6fe68c88fc9a72639c35d765b38351b838521addf45dadc", "a1a606d6c4762ef51c1759bcb8b5c88be1d323025400c41fe6885431064b64dc"),
|
||||
make_ctkey("48c4c349adaf7b3be27656ea70d1c83b93e1511bb0aac987861a4da9689b0e95", "ad14ffd5edac199ea7c5437d558089b0f2f03aa74bde43611322d769968b5a1c"),
|
||||
make_ctkey("2d2ffade0f85ddd83a036469e49542e93cad94f9bea535f0ea2eb2f56304517e", "bcc48d00bd06dc5439200e749d0caf8a062b072d0c0eb1f78f6a4d8f2373e5f4"),
|
||||
make_ctkey("4ee857d0ce17f66eca9c81eb326e404ceb50c8198248f2f827c440ee7aa0c0d7", "a8a9d61d4abbfb123630ffd214c834cc45113eaa51dd2f904cc6ae0c3c5d70e3")
|
||||
}};
|
||||
} // anonymous namespace
|
||||
|
||||
TEST(verRctNonSemanticsSimple, tx1_preconditions)
|
||||
{
|
||||
// If this unit test fails, something changed about transaction deserialization / expansion or
|
||||
// something changed about RingCT signature verification.
|
||||
|
||||
cryptonote::rct_ver_cache_t rct_ver_cache;
|
||||
|
||||
cryptonote::transaction tx = expand_transaction_from_bin_file_and_pubkeys
|
||||
(tx1_file_name, tx1_input_pubkeys);
|
||||
const rct::rctSig& rs = tx.rct_signatures;
|
||||
|
||||
const crypto::hash tx_prefix_hash = cryptonote::get_transaction_prefix_hash(tx);
|
||||
|
||||
EXPECT_EQ(1, tx.vin.size());
|
||||
EXPECT_EQ(2, tx.vout.size());
|
||||
const rct::key expected_sig_msg = rct::hash2rct(tx_prefix_hash);
|
||||
EXPECT_EQ(expected_sig_msg, rs.message);
|
||||
EXPECT_EQ(1, rs.mixRing.size());
|
||||
EXPECT_EQ(16, rs.mixRing[0].size());
|
||||
EXPECT_EQ(0, rs.pseudoOuts.size());
|
||||
EXPECT_EQ(0, rs.p.rangeSigs.size());
|
||||
EXPECT_EQ(0, rs.p.bulletproofs.size());
|
||||
EXPECT_EQ(1, rs.p.bulletproofs_plus.size());
|
||||
EXPECT_EQ(2, rs.p.bulletproofs_plus[0].V.size());
|
||||
EXPECT_EQ(7, rs.p.bulletproofs_plus[0].L.size());
|
||||
EXPECT_EQ(7, rs.p.bulletproofs_plus[0].R.size());
|
||||
EXPECT_EQ(0, rs.p.MGs.size());
|
||||
EXPECT_EQ(1, rs.p.CLSAGs.size());
|
||||
EXPECT_EQ(16, rs.p.CLSAGs[0].s.size());
|
||||
EXPECT_EQ(1, rs.p.pseudoOuts.size());
|
||||
EXPECT_EQ(tx1_input_pubkeys, rs.mixRing);
|
||||
EXPECT_EQ(2, rs.outPk.size());
|
||||
|
||||
EXPECT_TRUE(rct::verRctSemanticsSimple(rs));
|
||||
EXPECT_TRUE(rct::verRctNonSemanticsSimple(rs));
|
||||
EXPECT_TRUE(rct::verRctSimple(rs));
|
||||
EXPECT_TRUE(cryptonote::ver_rct_non_semantics_simple_cached(tx, tx1_input_pubkeys, rct_ver_cache, rct::RCTTypeBulletproofPlus));
|
||||
EXPECT_TRUE(cryptonote::ver_rct_non_semantics_simple_cached(tx, tx1_input_pubkeys, rct_ver_cache, rct::RCTTypeBulletproofPlus));
|
||||
}
|
||||
|
||||
#define SERIALIZABLE_SIG_CHANGES_SUBTEST(fieldmodifyclause) \
|
||||
do { \
|
||||
const auto sig_modifier_func = [](rct::rctSig& rs) { rs.fieldmodifyclause; }; \
|
||||
EXPECT_TRUE(modification_changes_do_serialize(original_sig, sig_modifier_func, true)); \
|
||||
} while (0); \
|
||||
|
||||
TEST(verRctNonSemanticsSimple, serializable_sig_changes)
|
||||
{
|
||||
// Hello, future visitors. If this unit test fails, then fields of rctSig have been dropped from
|
||||
// serialization.
|
||||
|
||||
const cryptonote::transaction tx = expand_transaction_from_bin_file_and_pubkeys
|
||||
(tx1_file_name, tx1_input_pubkeys);
|
||||
const rct::rctSig& original_sig = tx.rct_signatures;
|
||||
|
||||
// These are the subtests most likely to fail. Fields 'message' and 'mixRing' are not serialized
|
||||
// when sent over the wire, since they can be reconstructed from transaction data. However, they
|
||||
// are serialized by ::do_serialize(rctSig).
|
||||
// How signatures are serialized for the blockchain can be found in the methods
|
||||
// rct::rctSigBase::serialize_rctsig_base and rct::rctSigPrunable::serialize_rctsig_prunable.
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(message.bytes[31]++)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(mixRing.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(mixRing[0].push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(mixRing[0][8].dest[10]--)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(mixRing[0][15].mask[3]--)
|
||||
|
||||
// rctSigBase changes. These subtests are less likely to break
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(type ^= 23)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(pseudoOuts.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(ecdhInfo.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(outPk.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(outPk[0].dest[14]--)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(outPk[1].dest[14]--)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(outPk[0].mask[14]--)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(outPk[1].mask[14]--)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(txnFee *= 2023)
|
||||
|
||||
// rctSigPrunable changes
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.rangeSigs.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].A[13] -= 7)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].A1[13] -= 7)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].B[13] -= 7)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].r1[13] -= 7)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].s1[13] -= 7)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].d1[13] -= 7)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].L.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].L[2][13] -= 7)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].R.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].R[2][13] -= 7)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.MGs.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.CLSAGs.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.CLSAGs[0].s.push_back({}))
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.CLSAGs[0].s[15][31] ^= 69)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.CLSAGs[0].c1[0] /= 3)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.CLSAGs[0].D[0] /= 3)
|
||||
SERIALIZABLE_SIG_CHANGES_SUBTEST(p.pseudoOuts.push_back({}))
|
||||
|
||||
// Uncomment line below to sanity check SERIALIZABLE_SIG_CHANGES_SUBTEST
|
||||
// SERIALIZABLE_SIG_CHANGES_SUBTEST(message) // should fail
|
||||
}
|
||||
|
||||
#define UNSERIALIZABLE_SIG_CHANGES_SUBTEST(fieldmodifyclause) \
|
||||
do { \
|
||||
const auto sig_modifier_func = [](rct::rctSig& rs) { rs.fieldmodifyclause; }; \
|
||||
EXPECT_FALSE(modification_changes_do_serialize(original_sig, sig_modifier_func, false)); \
|
||||
} while (0); \
|
||||
|
||||
TEST(verRctNonSemanticsSimple, unserializable_sig_changes)
|
||||
{
|
||||
// Hello, future visitors. If this unit test fails, then congrats! ::do_serialize(rctSig) became
|
||||
// better at uniquely representing rctSig.
|
||||
const cryptonote::transaction tx = expand_transaction_from_bin_file_and_pubkeys
|
||||
(tx1_file_name, tx1_input_pubkeys);
|
||||
const rct::rctSig& original_sig = tx.rct_signatures;
|
||||
|
||||
UNSERIALIZABLE_SIG_CHANGES_SUBTEST(p.CLSAGs[0].I[14]++)
|
||||
UNSERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].V.push_back({}))
|
||||
UNSERIALIZABLE_SIG_CHANGES_SUBTEST(p.bulletproofs_plus[0].V[1][31]--)
|
||||
|
||||
// Uncomment line below to sanity check UNSERIALIZABLE_SIG_CHANGES_SUBTEST_SHORTCUT
|
||||
// UNSERIALIZABLE_SIG_CHANGES_SUBTEST_SHORTCUT(message[2]++) // should fail
|
||||
}
|
||||
|
||||
#define SERIALIZABLE_MIXRING_CHANGES_SUBTEST(fieldmodifyclause) \
|
||||
do { \
|
||||
using mr_mod_func_t = std::function<void(rct::ctkeyM&)>; \
|
||||
const mr_mod_func_t mr_modifier_func = [&](rct::ctkeyM& mr) { mr fieldmodifyclause; }; \
|
||||
EXPECT_TRUE(modification_changes_do_serialize(original_mixring, mr_modifier_func, true)); \
|
||||
} while (0); \
|
||||
|
||||
TEST(verRctNonSemanticsSimple, serializable_mixring_changes)
|
||||
{
|
||||
// Hello, future Monero devs! If this unit test fails, a huge concensus-related assumption has
|
||||
// been broken and verRctNonSemanticsSimpleCached needs to be reevalulated for validity. If it
|
||||
// is not, there may be an exploit which allows for double-spending. See the implementation for
|
||||
// more comments on the uniqueness of the internal cache hash.
|
||||
|
||||
const rct::ctkeyM original_mixring = tx1_input_pubkeys;
|
||||
|
||||
const size_t mlen = tx1_input_pubkeys.size();
|
||||
ASSERT_EQ(1, mlen);
|
||||
const size_t nlen = tx1_input_pubkeys[0].size();
|
||||
ASSERT_EQ(16, nlen);
|
||||
|
||||
SERIALIZABLE_MIXRING_CHANGES_SUBTEST(.clear())
|
||||
SERIALIZABLE_MIXRING_CHANGES_SUBTEST(.push_back({}))
|
||||
SERIALIZABLE_MIXRING_CHANGES_SUBTEST([0].clear())
|
||||
SERIALIZABLE_MIXRING_CHANGES_SUBTEST([0].push_back({}))
|
||||
SERIALIZABLE_MIXRING_CHANGES_SUBTEST([0][0].dest[4]--)
|
||||
SERIALIZABLE_MIXRING_CHANGES_SUBTEST([0][15].mask[31]--)
|
||||
|
||||
// Loop through all bytes of the mixRing and check for serialiable changes
|
||||
for (size_t i = 0; i < mlen; ++i)
|
||||
{
|
||||
for (size_t j = 0; j < nlen; ++j)
|
||||
{
|
||||
static_assert(sizeof(rct::key) == 32, "rct::key size wrong");
|
||||
for (size_t k = 0; k < sizeof(rct::key); ++k)
|
||||
{
|
||||
SERIALIZABLE_MIXRING_CHANGES_SUBTEST([i][j].dest[k]++)
|
||||
SERIALIZABLE_MIXRING_CHANGES_SUBTEST([i][j].mask[k]++)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define EXPAND_TRANSACTION_2_FAILURES_SUBTEST(fieldmodifyclause) \
|
||||
do { \
|
||||
cryptonote::transaction test_tx = original_tx; \
|
||||
test_tx.fieldmodifyclause; \
|
||||
test_tx.invalidate_hashes(); \
|
||||
EXPECT_FALSE(check_tx_is_expanded(test_tx, original_mixring)); \
|
||||
} while (0); \
|
||||
|
||||
TEST(verRctNonSemanticsSimple, expand_transaction_2_failures)
|
||||
{
|
||||
cryptonote::transaction original_tx = expand_transaction_from_bin_file_and_pubkeys
|
||||
(tx1_file_name, tx1_input_pubkeys);
|
||||
rct::ctkeyM original_mixring = tx1_input_pubkeys;
|
||||
|
||||
EXPAND_TRANSACTION_2_FAILURES_SUBTEST(rct_signatures.p.CLSAGs[0].I[0]++)
|
||||
EXPAND_TRANSACTION_2_FAILURES_SUBTEST(rct_signatures.mixRing[0][15].dest[31]++)
|
||||
EXPAND_TRANSACTION_2_FAILURES_SUBTEST(rct_signatures.mixRing[0][15].mask[31]++)
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user