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script_standard_tests.cpp
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// Copyright (c) 2017-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/data/bip341_wallet_vectors.json.h>
#include <key.h>
#include <key_io.h>
#include <script/script.h>
#include <script/signingprovider.h>
#include <script/solver.h>
#include <test/util/setup_common.h>
#include <util/strencodings.h>
#include <key/extkey.h>
#include <key/stealth.h>
#include <boost/test/unit_test.hpp>
#include <univalue.h>
BOOST_FIXTURE_TEST_SUITE(script_standard_tests, BasicTestingSetup)
BOOST_AUTO_TEST_CASE(dest_default_is_no_dest)
{
CTxDestination dest;
BOOST_CHECK(!IsValidDestination(dest));
}
BOOST_AUTO_TEST_CASE(script_standard_Solver_success)
{
CKey keys[3];
CPubKey pubkeys[3];
for (int i = 0; i < 3; i++) {
keys[i].MakeNewKey(true);
pubkeys[i] = keys[i].GetPubKey();
}
CScript s;
std::vector<std::vector<unsigned char> > solutions;
// TxoutType::PUBKEY
s.clear();
s << ToByteVector(pubkeys[0]) << OP_CHECKSIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::PUBKEY);
BOOST_CHECK_EQUAL(solutions.size(), 1U);
BOOST_CHECK(solutions[0] == ToByteVector(pubkeys[0]));
// TxoutType::PUBKEYHASH
s.clear();
s << OP_DUP << OP_HASH160 << ToByteVector(pubkeys[0].GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::PUBKEYHASH);
BOOST_CHECK_EQUAL(solutions.size(), 1U);
BOOST_CHECK(solutions[0] == ToByteVector(pubkeys[0].GetID()));
// TxoutType::SCRIPTHASH
CScript redeemScript(s); // initialize with leftover P2PKH script
s.clear();
s << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::SCRIPTHASH);
BOOST_CHECK_EQUAL(solutions.size(), 1U);
BOOST_CHECK(solutions[0] == ToByteVector(CScriptID(redeemScript)));
// TxoutType::MULTISIG
s.clear();
s << OP_1 <<
ToByteVector(pubkeys[0]) <<
ToByteVector(pubkeys[1]) <<
OP_2 << OP_CHECKMULTISIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::MULTISIG);
BOOST_CHECK_EQUAL(solutions.size(), 4U);
BOOST_CHECK(solutions[0] == std::vector<unsigned char>({1}));
BOOST_CHECK(solutions[1] == ToByteVector(pubkeys[0]));
BOOST_CHECK(solutions[2] == ToByteVector(pubkeys[1]));
BOOST_CHECK(solutions[3] == std::vector<unsigned char>({2}));
s.clear();
s << OP_2 <<
ToByteVector(pubkeys[0]) <<
ToByteVector(pubkeys[1]) <<
ToByteVector(pubkeys[2]) <<
OP_3 << OP_CHECKMULTISIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::MULTISIG);
BOOST_CHECK_EQUAL(solutions.size(), 5U);
BOOST_CHECK(solutions[0] == std::vector<unsigned char>({2}));
BOOST_CHECK(solutions[1] == ToByteVector(pubkeys[0]));
BOOST_CHECK(solutions[2] == ToByteVector(pubkeys[1]));
BOOST_CHECK(solutions[3] == ToByteVector(pubkeys[2]));
BOOST_CHECK(solutions[4] == std::vector<unsigned char>({3}));
// TxoutType::NULL_DATA
s.clear();
s << OP_RETURN <<
std::vector<unsigned char>({0}) <<
std::vector<unsigned char>({75}) <<
std::vector<unsigned char>({255});
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NULL_DATA);
BOOST_CHECK_EQUAL(solutions.size(), 0U);
// TxoutType::WITNESS_V0_KEYHASH
s.clear();
s << OP_0 << ToByteVector(pubkeys[0].GetID());
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::WITNESS_V0_KEYHASH);
BOOST_CHECK_EQUAL(solutions.size(), 1U);
BOOST_CHECK(solutions[0] == ToByteVector(pubkeys[0].GetID()));
// TxoutType::WITNESS_V0_SCRIPTHASH
uint256 scriptHash;
CSHA256().Write(redeemScript.data(), redeemScript.size())
.Finalize(scriptHash.begin());
s.clear();
s << OP_0 << ToByteVector(scriptHash);
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::WITNESS_V0_SCRIPTHASH);
BOOST_CHECK_EQUAL(solutions.size(), 1U);
BOOST_CHECK(solutions[0] == ToByteVector(scriptHash));
// TxoutType::WITNESS_V1_TAPROOT
s.clear();
s << OP_1 << ToByteVector(uint256::ZERO);
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::WITNESS_V1_TAPROOT);
BOOST_CHECK_EQUAL(solutions.size(), 1U);
BOOST_CHECK(solutions[0] == ToByteVector(uint256::ZERO));
// TxoutType::WITNESS_UNKNOWN
s.clear();
s << OP_16 << ToByteVector(uint256::ONE);
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::WITNESS_UNKNOWN);
BOOST_CHECK_EQUAL(solutions.size(), 2U);
BOOST_CHECK(solutions[0] == std::vector<unsigned char>{16});
BOOST_CHECK(solutions[1] == ToByteVector(uint256::ONE));
// TxoutType::NONSTANDARD
s.clear();
s << OP_9 << OP_ADD << OP_11 << OP_EQUAL;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
}
BOOST_AUTO_TEST_CASE(script_standard_Solver_failure)
{
CKey key = GenerateRandomKey();
CPubKey pubkey = key.GetPubKey();
CScript s;
std::vector<std::vector<unsigned char> > solutions;
// TxoutType::PUBKEY with incorrectly sized pubkey
s.clear();
s << std::vector<unsigned char>(30, 0x01) << OP_CHECKSIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
// TxoutType::PUBKEYHASH with incorrectly sized key hash
s.clear();
s << OP_DUP << OP_HASH160 << ToByteVector(pubkey) << OP_EQUALVERIFY << OP_CHECKSIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
// TxoutType::SCRIPTHASH with incorrectly sized script hash
s.clear();
s << OP_HASH160 << std::vector<unsigned char>(21, 0x01) << OP_EQUAL;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
// TxoutType::MULTISIG 0/2
s.clear();
s << OP_0 << ToByteVector(pubkey) << OP_1 << OP_CHECKMULTISIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
// TxoutType::MULTISIG 2/1
s.clear();
s << OP_2 << ToByteVector(pubkey) << OP_1 << OP_CHECKMULTISIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
// TxoutType::MULTISIG n = 2 with 1 pubkey
s.clear();
s << OP_1 << ToByteVector(pubkey) << OP_2 << OP_CHECKMULTISIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
// TxoutType::MULTISIG n = 1 with 0 pubkeys
s.clear();
s << OP_1 << OP_1 << OP_CHECKMULTISIG;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
// TxoutType::NULL_DATA with other opcodes
s.clear();
s << OP_RETURN << std::vector<unsigned char>({75}) << OP_ADD;
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
// TxoutType::WITNESS_UNKNOWN with incorrect program size
s.clear();
s << OP_0 << std::vector<unsigned char>(19, 0x01);
BOOST_CHECK_EQUAL(Solver(s, solutions), TxoutType::NONSTANDARD);
}
BOOST_AUTO_TEST_CASE(script_standard_ExtractDestination)
{
CKey key = GenerateRandomKey();
CPubKey pubkey = key.GetPubKey();
CScript s;
CTxDestination address;
// TxoutType::PUBKEY
s.clear();
s << ToByteVector(pubkey) << OP_CHECKSIG;
BOOST_CHECK(!ExtractDestination(s, address));
BOOST_CHECK(std::get<PubKeyDestination>(address) == PubKeyDestination(pubkey));
// TxoutType::PUBKEYHASH
s.clear();
s << OP_DUP << OP_HASH160 << ToByteVector(pubkey.GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
BOOST_CHECK(ExtractDestination(s, address));
BOOST_CHECK(std::get<PKHash>(address) == PKHash(pubkey));
// TxoutType::SCRIPTHASH
CScript redeemScript(s); // initialize with leftover P2PKH script
s.clear();
s << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL;
BOOST_CHECK(ExtractDestination(s, address));
BOOST_CHECK(std::get<ScriptHash>(address) == ScriptHash(redeemScript));
// TxoutType::MULTISIG
s.clear();
s << OP_1 << ToByteVector(pubkey) << OP_1 << OP_CHECKMULTISIG;
BOOST_CHECK(!ExtractDestination(s, address));
// TxoutType::NULL_DATA
s.clear();
s << OP_RETURN << std::vector<unsigned char>({75});
BOOST_CHECK(!ExtractDestination(s, address));
// TxoutType::WITNESS_V0_KEYHASH
s.clear();
s << OP_0 << ToByteVector(pubkey.GetID());
BOOST_CHECK(ExtractDestination(s, address));
WitnessV0KeyHash keyhash;
CHash160().Write(pubkey).Finalize(keyhash);
BOOST_CHECK(std::get<WitnessV0KeyHash>(address) == keyhash);
// TxoutType::WITNESS_V0_SCRIPTHASH
s.clear();
WitnessV0ScriptHash scripthash;
CSHA256().Write(redeemScript.data(), redeemScript.size()).Finalize(scripthash.begin());
s << OP_0 << ToByteVector(scripthash);
BOOST_CHECK(ExtractDestination(s, address));
BOOST_CHECK(std::get<WitnessV0ScriptHash>(address) == scripthash);
// TxoutType::WITNESS_UNKNOWN with unknown version
s.clear();
s << OP_1 << ToByteVector(pubkey);
BOOST_CHECK(ExtractDestination(s, address));
WitnessUnknown unk{1, ToByteVector(pubkey)};
BOOST_CHECK(std::get<WitnessUnknown>(address) == unk);
}
BOOST_AUTO_TEST_CASE(script_standard_GetScriptFor_)
{
CKey keys[3];
CPubKey pubkeys[3];
for (int i = 0; i < 3; i++) {
keys[i].MakeNewKey(true);
pubkeys[i] = keys[i].GetPubKey();
}
CScript expected, result;
// PKHash
expected.clear();
expected << OP_DUP << OP_HASH160 << ToByteVector(pubkeys[0].GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
result = GetScriptForDestination(PKHash(pubkeys[0]));
BOOST_CHECK(result == expected);
// CScriptID
CScript redeemScript(result);
expected.clear();
expected << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL;
result = GetScriptForDestination(ScriptHash(redeemScript));
BOOST_CHECK(result == expected);
// CNoDestination
expected.clear();
result = GetScriptForDestination(CNoDestination());
BOOST_CHECK(result == expected);
// GetScriptForRawPubKey
expected.clear();
expected << ToByteVector(pubkeys[0]) << OP_CHECKSIG;
result = GetScriptForRawPubKey(pubkeys[0]);
BOOST_CHECK(result == expected);
// GetScriptForMultisig
expected.clear();
expected << OP_2 <<
ToByteVector(pubkeys[0]) <<
ToByteVector(pubkeys[1]) <<
ToByteVector(pubkeys[2]) <<
OP_3 << OP_CHECKMULTISIG;
result = GetScriptForMultisig(2, std::vector<CPubKey>(pubkeys, pubkeys + 3));
BOOST_CHECK(result == expected);
// WitnessV0KeyHash
expected.clear();
expected << OP_0 << ToByteVector(pubkeys[0].GetID());
result = GetScriptForDestination(WitnessV0KeyHash(Hash160(ToByteVector(pubkeys[0]))));
BOOST_CHECK(result == expected);
result = GetScriptForDestination(WitnessV0KeyHash(pubkeys[0].GetID()));
BOOST_CHECK(result == expected);
// WitnessV0ScriptHash (multisig)
CScript witnessScript;
witnessScript << OP_1 << ToByteVector(pubkeys[0]) << OP_1 << OP_CHECKMULTISIG;
uint256 scriptHash;
CSHA256().Write(witnessScript.data(), witnessScript.size())
.Finalize(scriptHash.begin());
expected.clear();
expected << OP_0 << ToByteVector(scriptHash);
result = GetScriptForDestination(WitnessV0ScriptHash(witnessScript));
BOOST_CHECK(result == expected);
}
BOOST_AUTO_TEST_CASE(script_standard_taproot_builder)
{
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({}), true);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0}), true);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,1}), true);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,0,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,0,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,0,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,1,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,1,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,1,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,2,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,2,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({0,2,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,0,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,0,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,0,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,1,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,1,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,1,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,2,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,2,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({1,2,2}), true);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,0,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,0,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,0,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,1,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,1,1}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,1,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,2,0}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,2,1}), true);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,2,2}), false);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({2,2,2,3,4,5,6,7,8,9,10,11,12,14,14,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,31,31,31,31,31,31,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,128}), true);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({128,128,127,126,125,124,123,122,121,120,119,118,117,116,115,114,113,112,111,110,109,108,107,106,105,104,103,102,101,100,99,98,97,96,95,94,93,92,91,90,89,88,87,86,85,84,83,82,81,80,79,78,77,76,75,74,73,72,71,70,69,68,67,66,65,64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}), true);
BOOST_CHECK_EQUAL(TaprootBuilder::ValidDepths({129,129,128,127,126,125,124,123,122,121,120,119,118,117,116,115,114,113,112,111,110,109,108,107,106,105,104,103,102,101,100,99,98,97,96,95,94,93,92,91,90,89,88,87,86,85,84,83,82,81,80,79,78,77,76,75,74,73,72,71,70,69,68,67,66,65,64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}), false);
XOnlyPubKey key_inner{ParseHex("79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798")};
XOnlyPubKey key_1{ParseHex("c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee5")};
XOnlyPubKey key_2{ParseHex("f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9")};
CScript script_1 = CScript() << ToByteVector(key_1) << OP_CHECKSIG;
CScript script_2 = CScript() << ToByteVector(key_2) << OP_CHECKSIG;
uint256 hash_3 = uint256S("31fe7061656bea2a36aa60a2f7ef940578049273746935d296426dc0afd86b68");
TaprootBuilder builder;
BOOST_CHECK(builder.IsValid() && builder.IsComplete());
builder.Add(2, script_2, 0xc0);
BOOST_CHECK(builder.IsValid() && !builder.IsComplete());
builder.AddOmitted(2, hash_3);
BOOST_CHECK(builder.IsValid() && !builder.IsComplete());
builder.Add(1, script_1, 0xc0);
BOOST_CHECK(builder.IsValid() && builder.IsComplete());
builder.Finalize(key_inner);
BOOST_CHECK(builder.IsValid() && builder.IsComplete());
BOOST_CHECK_EQUAL(EncodeDestination(builder.GetOutput()), "bc1pj6gaw944fy0xpmzzu45ugqde4rz7mqj5kj0tg8kmr5f0pjq8vnaqgynnge");
}
BOOST_AUTO_TEST_CASE(bip341_spk_test_vectors)
{
using control_set = decltype(TaprootSpendData::scripts)::mapped_type;
UniValue tests;
tests.read(json_tests::bip341_wallet_vectors);
const auto& vectors = tests["scriptPubKey"];
for (const auto& vec : vectors.getValues()) {
TaprootBuilder spktest;
std::map<std::pair<std::vector<unsigned char>, int>, int> scriptposes;
std::function<void (const UniValue&, int)> parse_tree = [&](const UniValue& node, int depth) {
if (node.isNull()) return;
if (node.isObject()) {
auto script = ParseHex(node["script"].get_str());
int idx = node["id"].getInt<int>();
int leaf_version = node["leafVersion"].getInt<int>();
scriptposes[{script, leaf_version}] = idx;
spktest.Add(depth, script, leaf_version);
} else {
parse_tree(node[0], depth + 1);
parse_tree(node[1], depth + 1);
}
};
parse_tree(vec["given"]["scriptTree"], 0);
spktest.Finalize(XOnlyPubKey(ParseHex(vec["given"]["internalPubkey"].get_str())));
BOOST_CHECK_EQUAL(HexStr(GetScriptForDestination(spktest.GetOutput())), vec["expected"]["scriptPubKey"].get_str());
BOOST_CHECK_EQUAL(EncodeDestination(spktest.GetOutput()), vec["expected"]["bip350Address"].get_str());
auto spend_data = spktest.GetSpendData();
BOOST_CHECK_EQUAL(vec["intermediary"]["merkleRoot"].isNull(), spend_data.merkle_root.IsNull());
if (!spend_data.merkle_root.IsNull()) {
BOOST_CHECK_EQUAL(vec["intermediary"]["merkleRoot"].get_str(), HexStr(spend_data.merkle_root));
}
BOOST_CHECK_EQUAL(spend_data.scripts.size(), scriptposes.size());
for (const auto& scriptpos : scriptposes) {
BOOST_CHECK(spend_data.scripts[scriptpos.first] == control_set{ParseHex(vec["expected"]["scriptPathControlBlocks"][scriptpos.second].get_str())});
}
}
}
BOOST_AUTO_TEST_SUITE_END()