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-rw-r--r--src/bitcoin-tx.cpp3
-rw-r--r--src/core_read.cpp1
-rw-r--r--src/key.cpp21
-rw-r--r--src/key.h12
-rw-r--r--src/node/psbt.cpp6
-rw-r--r--src/psbt.cpp31
-rw-r--r--src/psbt.h11
-rw-r--r--src/pubkey.cpp4
-rw-r--r--src/pubkey.h10
-rw-r--r--src/rpc/rawtransaction.cpp6
-rw-r--r--src/script/descriptor.cpp4
-rw-r--r--src/script/interpreter.cpp14
-rw-r--r--src/script/interpreter.h5
-rw-r--r--src/script/sign.cpp195
-rw-r--r--src/script/sign.h9
-rw-r--r--src/script/signingprovider.cpp13
-rw-r--r--src/script/signingprovider.h4
-rw-r--r--src/script/standard.cpp57
-rw-r--r--src/script/standard.h46
-rw-r--r--src/test/key_tests.cpp42
-rw-r--r--src/wallet/external_signer_scriptpubkeyman.cpp4
-rw-r--r--src/wallet/external_signer_scriptpubkeyman.h2
-rw-r--r--src/wallet/rpcwallet.cpp12
-rw-r--r--src/wallet/scriptpubkeyman.cpp8
-rw-r--r--src/wallet/scriptpubkeyman.h6
-rw-r--r--src/wallet/test/psbt_wallet_tests.cpp2
-rw-r--r--src/wallet/wallet.cpp5
-rwxr-xr-xtest/functional/wallet_taproot.py126
28 files changed, 594 insertions, 65 deletions
diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index 93ac4b8f7e..3fc87ae1ff 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -506,11 +506,12 @@ static void MutateTxDelOutput(CMutableTransaction& tx, const std::string& strOut
tx.vout.erase(tx.vout.begin() + outIdx);
}
-static const unsigned int N_SIGHASH_OPTS = 6;
+static const unsigned int N_SIGHASH_OPTS = 7;
static const struct {
const char *flagStr;
int flags;
} sighashOptions[N_SIGHASH_OPTS] = {
+ {"DEFAULT", SIGHASH_DEFAULT},
{"ALL", SIGHASH_ALL},
{"NONE", SIGHASH_NONE},
{"SINGLE", SIGHASH_SINGLE},
diff --git a/src/core_read.cpp b/src/core_read.cpp
index b5fc93886d..6108961010 100644
--- a/src/core_read.cpp
+++ b/src/core_read.cpp
@@ -260,6 +260,7 @@ int ParseSighashString(const UniValue& sighash)
int hash_type = SIGHASH_ALL;
if (!sighash.isNull()) {
static std::map<std::string, int> map_sighash_values = {
+ {std::string("DEFAULT"), int(SIGHASH_DEFAULT)},
{std::string("ALL"), int(SIGHASH_ALL)},
{std::string("ALL|ANYONECANPAY"), int(SIGHASH_ALL|SIGHASH_ANYONECANPAY)},
{std::string("NONE"), int(SIGHASH_NONE)},
diff --git a/src/key.cpp b/src/key.cpp
index 5666adebb8..dcad386e77 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -7,10 +7,13 @@
#include <crypto/common.h>
#include <crypto/hmac_sha512.h>
+#include <hash.h>
#include <random.h>
#include <secp256k1.h>
+#include <secp256k1_extrakeys.h>
#include <secp256k1_recovery.h>
+#include <secp256k1_schnorrsig.h>
static secp256k1_context* secp256k1_context_sign = nullptr;
@@ -258,6 +261,24 @@ bool CKey::SignCompact(const uint256 &hash, std::vector<unsigned char>& vchSig)
return true;
}
+bool CKey::SignSchnorr(const uint256& hash, Span<unsigned char> sig, const uint256* merkle_root, const uint256* aux) const
+{
+ assert(sig.size() == 64);
+ secp256k1_keypair keypair;
+ if (!secp256k1_keypair_create(secp256k1_context_sign, &keypair, begin())) return false;
+ if (merkle_root) {
+ secp256k1_xonly_pubkey pubkey;
+ if (!secp256k1_keypair_xonly_pub(secp256k1_context_sign, &pubkey, nullptr, &keypair)) return false;
+ unsigned char pubkey_bytes[32];
+ if (!secp256k1_xonly_pubkey_serialize(secp256k1_context_sign, pubkey_bytes, &pubkey)) return false;
+ uint256 tweak = XOnlyPubKey(pubkey_bytes).ComputeTapTweakHash(merkle_root->IsNull() ? nullptr : merkle_root);
+ if (!secp256k1_keypair_xonly_tweak_add(GetVerifyContext(), &keypair, tweak.data())) return false;
+ }
+ bool ret = secp256k1_schnorrsig_sign(secp256k1_context_sign, sig.data(), hash.data(), &keypair, secp256k1_nonce_function_bip340, aux ? (void*)aux->data() : nullptr);
+ memory_cleanse(&keypair, sizeof(keypair));
+ return ret;
+}
+
bool CKey::Load(const CPrivKey &seckey, const CPubKey &vchPubKey, bool fSkipCheck=false) {
if (!ec_seckey_import_der(secp256k1_context_sign, (unsigned char*)begin(), seckey.data(), seckey.size()))
return false;
diff --git a/src/key.h b/src/key.h
index 3ee49a778b..d47e54800c 100644
--- a/src/key.h
+++ b/src/key.h
@@ -128,6 +128,18 @@ public:
*/
bool SignCompact(const uint256& hash, std::vector<unsigned char>& vchSig) const;
+ /**
+ * Create a BIP-340 Schnorr signature, for the xonly-pubkey corresponding to *this,
+ * optionally tweaked by *merkle_root. Additional nonce entropy can be provided through
+ * aux.
+ *
+ * When merkle_root is not nullptr, this results in a signature with a modified key as
+ * specified in BIP341:
+ * - If merkle_root->IsNull(): key + H_TapTweak(pubkey)*G
+ * - Otherwise: key + H_TapTweak(pubkey || *merkle_root)
+ */
+ bool SignSchnorr(const uint256& hash, Span<unsigned char> sig, const uint256* merkle_root = nullptr, const uint256* aux = nullptr) const;
+
//! Derive BIP32 child key.
bool Derive(CKey& keyChild, ChainCode &ccChild, unsigned int nChild, const ChainCode& cc) const;
diff --git a/src/node/psbt.cpp b/src/node/psbt.cpp
index c189018268..b013b6d579 100644
--- a/src/node/psbt.cpp
+++ b/src/node/psbt.cpp
@@ -23,6 +23,8 @@ PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx)
result.inputs.resize(psbtx.tx->vin.size());
+ const PrecomputedTransactionData txdata = PrecomputePSBTData(psbtx);
+
for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
PSBTInput& input = psbtx.inputs[i];
PSBTInputAnalysis& input_analysis = result.inputs[i];
@@ -61,7 +63,7 @@ PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx)
// Figure out what is missing
SignatureData outdata;
- bool complete = SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, 1, &outdata);
+ bool complete = SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, &txdata, 1, &outdata);
// Things are missing
if (!complete) {
@@ -121,7 +123,7 @@ PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx)
PSBTInput& input = psbtx.inputs[i];
Coin newcoin;
- if (!SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, 1, nullptr, true) || !psbtx.GetInputUTXO(newcoin.out, i)) {
+ if (!SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, nullptr, 1) || !psbtx.GetInputUTXO(newcoin.out, i)) {
success = false;
break;
} else {
diff --git a/src/psbt.cpp b/src/psbt.cpp
index a849b2ea53..5445bc8aa1 100644
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -59,12 +59,15 @@ bool PartiallySignedTransaction::AddOutput(const CTxOut& txout, const PSBTOutput
bool PartiallySignedTransaction::GetInputUTXO(CTxOut& utxo, int input_index) const
{
- PSBTInput input = inputs[input_index];
+ const PSBTInput& input = inputs[input_index];
uint32_t prevout_index = tx->vin[input_index].prevout.n;
if (input.non_witness_utxo) {
if (prevout_index >= input.non_witness_utxo->vout.size()) {
return false;
}
+ if (input.non_witness_utxo->GetHash() != tx->vin[input_index].prevout.hash) {
+ return false;
+ }
utxo = input.non_witness_utxo->vout[prevout_index];
} else if (!input.witness_utxo.IsNull()) {
utxo = input.witness_utxo;
@@ -227,7 +230,24 @@ void UpdatePSBTOutput(const SigningProvider& provider, PartiallySignedTransactio
psbt_out.FromSignatureData(sigdata);
}
-bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, int sighash, SignatureData* out_sigdata, bool use_dummy)
+PrecomputedTransactionData PrecomputePSBTData(const PartiallySignedTransaction& psbt)
+{
+ const CMutableTransaction& tx = *psbt.tx;
+ bool have_all_spent_outputs = true;
+ std::vector<CTxOut> utxos(tx.vin.size());
+ for (size_t idx = 0; idx < tx.vin.size(); ++idx) {
+ if (!psbt.GetInputUTXO(utxos[idx], idx)) have_all_spent_outputs = false;
+ }
+ PrecomputedTransactionData txdata;
+ if (have_all_spent_outputs) {
+ txdata.Init(tx, std::move(utxos), true);
+ } else {
+ txdata.Init(tx, {}, true);
+ }
+ return txdata;
+}
+
+bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, const PrecomputedTransactionData* txdata, int sighash, SignatureData* out_sigdata)
{
PSBTInput& input = psbt.inputs.at(index);
const CMutableTransaction& tx = *psbt.tx;
@@ -267,10 +287,10 @@ bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction&
sigdata.witness = false;
bool sig_complete;
- if (use_dummy) {
+ if (txdata == nullptr) {
sig_complete = ProduceSignature(provider, DUMMY_SIGNATURE_CREATOR, utxo.scriptPubKey, sigdata);
} else {
- MutableTransactionSignatureCreator creator(&tx, index, utxo.nValue, sighash);
+ MutableTransactionSignatureCreator creator(&tx, index, utxo.nValue, txdata, sighash);
sig_complete = ProduceSignature(provider, creator, utxo.scriptPubKey, sigdata);
}
// Verify that a witness signature was produced in case one was required.
@@ -302,8 +322,9 @@ bool FinalizePSBT(PartiallySignedTransaction& psbtx)
// PartiallySignedTransaction did not understand them), this will combine them into a final
// script.
bool complete = true;
+ const PrecomputedTransactionData txdata = PrecomputePSBTData(psbtx);
for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
- complete &= SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, SIGHASH_ALL);
+ complete &= SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, &txdata, SIGHASH_ALL);
}
return complete;
diff --git a/src/psbt.h b/src/psbt.h
index 96ae39fdb8..f6b82b43de 100644
--- a/src/psbt.h
+++ b/src/psbt.h
@@ -567,11 +567,18 @@ enum class PSBTRole {
std::string PSBTRoleName(PSBTRole role);
+/** Compute a PrecomputedTransactionData object from a psbt. */
+PrecomputedTransactionData PrecomputePSBTData(const PartiallySignedTransaction& psbt);
+
/** Checks whether a PSBTInput is already signed. */
bool PSBTInputSigned(const PSBTInput& input);
-/** Signs a PSBTInput, verifying that all provided data matches what is being signed. */
-bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, int sighash = SIGHASH_ALL, SignatureData* out_sigdata = nullptr, bool use_dummy = false);
+/** Signs a PSBTInput, verifying that all provided data matches what is being signed.
+ *
+ * txdata should be the output of PrecomputePSBTData (which can be shared across
+ * multiple SignPSBTInput calls). If it is nullptr, a dummy signature will be created.
+ **/
+bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, const PrecomputedTransactionData* txdata, int sighash = SIGHASH_ALL, SignatureData* out_sigdata = nullptr);
/** Counts the unsigned inputs of a PSBT. */
size_t CountPSBTUnsignedInputs(const PartiallySignedTransaction& psbt);
diff --git a/src/pubkey.cpp b/src/pubkey.cpp
index 51cc826b00..175a39b805 100644
--- a/src/pubkey.cpp
+++ b/src/pubkey.cpp
@@ -373,3 +373,7 @@ ECCVerifyHandle::~ECCVerifyHandle()
secp256k1_context_verify = nullptr;
}
}
+
+const secp256k1_context* GetVerifyContext() {
+ return secp256k1_context_verify;
+}
diff --git a/src/pubkey.h b/src/pubkey.h
index 152a48dd18..eec34a89c2 100644
--- a/src/pubkey.h
+++ b/src/pubkey.h
@@ -234,6 +234,10 @@ public:
* fail. */
bool IsFullyValid() const;
+ /** Test whether this is the 0 key (the result of default construction). This implies
+ * !IsFullyValid(). */
+ bool IsNull() const { return m_keydata.IsNull(); }
+
/** Construct an x-only pubkey from exactly 32 bytes. */
explicit XOnlyPubKey(Span<const unsigned char> bytes);
@@ -312,4 +316,10 @@ public:
~ECCVerifyHandle();
};
+typedef struct secp256k1_context_struct secp256k1_context;
+
+/** Access to the internal secp256k1 context used for verification. Only intended to be used
+ * by key.cpp. */
+const secp256k1_context* GetVerifyContext();
+
#endif // BITCOIN_PUBKEY_H
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 414c6637a5..ccb3123714 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -753,7 +753,8 @@ static RPCHelpMan signrawtransactionwithkey()
},
},
},
- {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"ALL"}, "The signature hash type. Must be one of:\n"
+ {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"DEFAULT"}, "The signature hash type. Must be one of:\n"
+ " \"DEFAULT\"\n"
" \"ALL\"\n"
" \"NONE\"\n"
" \"SINGLE\"\n"
@@ -1655,6 +1656,7 @@ static RPCHelpMan utxoupdatepsbt()
}
// Fill the inputs
+ const PrecomputedTransactionData txdata = PrecomputePSBTData(psbtx);
for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
PSBTInput& input = psbtx.inputs.at(i);
@@ -1671,7 +1673,7 @@ static RPCHelpMan utxoupdatepsbt()
// Update script/keypath information using descriptor data.
// Note that SignPSBTInput does a lot more than just constructing ECDSA signatures
// we don't actually care about those here, in fact.
- SignPSBTInput(public_provider, psbtx, i, /* sighash_type */ 1);
+ SignPSBTInput(public_provider, psbtx, i, &txdata, /* sighash_type */ 1);
}
// Update script/keypath information using descriptor data.
diff --git a/src/script/descriptor.cpp b/src/script/descriptor.cpp
index 51cf8a7d62..84a8b06c5c 100644
--- a/src/script/descriptor.cpp
+++ b/src/script/descriptor.cpp
@@ -843,7 +843,9 @@ protected:
XOnlyPubKey xpk(keys[0]);
if (!xpk.IsFullyValid()) return {};
builder.Finalize(xpk);
- return Vector(GetScriptForDestination(builder.GetOutput()));
+ WitnessV1Taproot output = builder.GetOutput();
+ out.tr_spenddata[output].Merge(builder.GetSpendData());
+ return Vector(GetScriptForDestination(output));
}
bool ToStringSubScriptHelper(const SigningProvider* arg, std::string& ret, bool priv, bool normalized) const override
{
diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index 3c3c3ac1a8..2dd173ee20 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -1420,7 +1420,7 @@ uint256 GetSpentScriptsSHA256(const std::vector<CTxOut>& outputs_spent)
} // namespace
template <class T>
-void PrecomputedTransactionData::Init(const T& txTo, std::vector<CTxOut>&& spent_outputs)
+void PrecomputedTransactionData::Init(const T& txTo, std::vector<CTxOut>&& spent_outputs, bool force)
{
assert(!m_spent_outputs_ready);
@@ -1431,9 +1431,9 @@ void PrecomputedTransactionData::Init(const T& txTo, std::vector<CTxOut>&& spent
}
// Determine which precomputation-impacting features this transaction uses.
- bool uses_bip143_segwit = false;
- bool uses_bip341_taproot = false;
- for (size_t inpos = 0; inpos < txTo.vin.size(); ++inpos) {
+ bool uses_bip143_segwit = force;
+ bool uses_bip341_taproot = force;
+ for (size_t inpos = 0; inpos < txTo.vin.size() && !(uses_bip143_segwit && uses_bip341_taproot); ++inpos) {
if (!txTo.vin[inpos].scriptWitness.IsNull()) {
if (m_spent_outputs_ready && m_spent_outputs[inpos].scriptPubKey.size() == 2 + WITNESS_V1_TAPROOT_SIZE &&
m_spent_outputs[inpos].scriptPubKey[0] == OP_1) {
@@ -1478,8 +1478,8 @@ PrecomputedTransactionData::PrecomputedTransactionData(const T& txTo)
}
// explicit instantiation
-template void PrecomputedTransactionData::Init(const CTransaction& txTo, std::vector<CTxOut>&& spent_outputs);
-template void PrecomputedTransactionData::Init(const CMutableTransaction& txTo, std::vector<CTxOut>&& spent_outputs);
+template void PrecomputedTransactionData::Init(const CTransaction& txTo, std::vector<CTxOut>&& spent_outputs, bool force);
+template void PrecomputedTransactionData::Init(const CMutableTransaction& txTo, std::vector<CTxOut>&& spent_outputs, bool force);
template PrecomputedTransactionData::PrecomputedTransactionData(const CTransaction& txTo);
template PrecomputedTransactionData::PrecomputedTransactionData(const CMutableTransaction& txTo);
@@ -1711,7 +1711,7 @@ bool GenericTransactionSignatureChecker<T>::CheckSchnorrSignature(Span<const uns
if (hashtype == SIGHASH_DEFAULT) return set_error(serror, SCRIPT_ERR_SCHNORR_SIG_HASHTYPE);
}
uint256 sighash;
- assert(this->txdata);
+ if (!this->txdata) return HandleMissingData(m_mdb);
if (!SignatureHashSchnorr(sighash, execdata, *txTo, nIn, hashtype, sigversion, *this->txdata, m_mdb)) {
return set_error(serror, SCRIPT_ERR_SCHNORR_SIG_HASHTYPE);
}
diff --git a/src/script/interpreter.h b/src/script/interpreter.h
index fa4ee83e04..ced5c28bc1 100644
--- a/src/script/interpreter.h
+++ b/src/script/interpreter.h
@@ -168,7 +168,7 @@ struct PrecomputedTransactionData
PrecomputedTransactionData() = default;
template <class T>
- void Init(const T& tx, std::vector<CTxOut>&& spent_outputs);
+ void Init(const T& tx, std::vector<CTxOut>&& spent_outputs, bool force = false);
template <class T>
explicit PrecomputedTransactionData(const T& tx);
@@ -260,6 +260,9 @@ enum class MissingDataBehavior
FAIL, //!< Just act as if the signature was invalid
};
+template<typename T>
+bool SignatureHashSchnorr(uint256& hash_out, const ScriptExecutionData& execdata, const T& tx_to, uint32_t in_pos, uint8_t hash_type, SigVersion sigversion, const PrecomputedTransactionData& cache, MissingDataBehavior mdb);
+
template <class T>
class GenericTransactionSignatureChecker : public BaseSignatureChecker
{
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index da0092f9e3..65276f641f 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -11,13 +11,28 @@
#include <script/signingprovider.h>
#include <script/standard.h>
#include <uint256.h>
+#include <util/vector.h>
typedef std::vector<unsigned char> valtype;
-MutableTransactionSignatureCreator::MutableTransactionSignatureCreator(const CMutableTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, int nHashTypeIn) : txTo(txToIn), nIn(nInIn), nHashType(nHashTypeIn), amount(amountIn), checker(txTo, nIn, amountIn, MissingDataBehavior::FAIL) {}
+MutableTransactionSignatureCreator::MutableTransactionSignatureCreator(const CMutableTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, int nHashTypeIn)
+ : txTo(txToIn), nIn(nInIn), nHashType(nHashTypeIn), amount(amountIn), checker(txTo, nIn, amountIn, MissingDataBehavior::FAIL),
+ m_txdata(nullptr)
+{
+}
+
+MutableTransactionSignatureCreator::MutableTransactionSignatureCreator(const CMutableTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, const PrecomputedTransactionData* txdata, int nHashTypeIn)
+ : txTo(txToIn), nIn(nInIn), nHashType(nHashTypeIn), amount(amountIn),
+ checker(txdata ? MutableTransactionSignatureChecker(txTo, nIn, amount, *txdata, MissingDataBehavior::FAIL) :
+ MutableTransactionSignatureChecker(txTo, nIn, amount, MissingDataBehavior::FAIL)),
+ m_txdata(txdata)
+{
+}
bool MutableTransactionSignatureCreator::CreateSig(const SigningProvider& provider, std::vector<unsigned char>& vchSig, const CKeyID& address, const CScript& scriptCode, SigVersion sigversion) const
{
+ assert(sigversion == SigVersion::BASE || sigversion == SigVersion::WITNESS_V0);
+
CKey key;
if (!provider.GetKey(address, key))
return false;
@@ -26,13 +41,61 @@ bool MutableTransactionSignatureCreator::CreateSig(const SigningProvider& provid
if (sigversion == SigVersion::WITNESS_V0 && !key.IsCompressed())
return false;
- // Signing for witness scripts needs the amount.
- if (sigversion == SigVersion::WITNESS_V0 && amount < 0) return false;
+ // Signing without known amount does not work in witness scripts.
+ if (sigversion == SigVersion::WITNESS_V0 && !MoneyRange(amount)) return false;
+
+ // BASE/WITNESS_V0 signatures don't support explicit SIGHASH_DEFAULT, use SIGHASH_ALL instead.
+ const int hashtype = nHashType == SIGHASH_DEFAULT ? SIGHASH_ALL : nHashType;
- uint256 hash = SignatureHash(scriptCode, *txTo, nIn, nHashType, amount, sigversion);
+ uint256 hash = SignatureHash(scriptCode, *txTo, nIn, hashtype, amount, sigversion, m_txdata);
if (!key.Sign(hash, vchSig))
return false;
- vchSig.push_back((unsigned char)nHashType);
+ vchSig.push_back((unsigned char)hashtype);
+ return true;
+}
+
+bool MutableTransactionSignatureCreator::CreateSchnorrSig(const SigningProvider& provider, std::vector<unsigned char>& sig, const XOnlyPubKey& pubkey, const uint256* leaf_hash, const uint256* merkle_root, SigVersion sigversion) const
+{
+ assert(sigversion == SigVersion::TAPROOT || sigversion == SigVersion::TAPSCRIPT);
+
+ CKey key;
+ {
+ // For now, use the old full pubkey-based key derivation logic. As it indexed by
+ // Hash160(full pubkey), we need to try both a version prefixed with 0x02, and one
+ // with 0x03.
+ unsigned char b[33] = {0x02};
+ std::copy(pubkey.begin(), pubkey.end(), b + 1);
+ CPubKey fullpubkey;
+ fullpubkey.Set(b, b + 33);
+ CKeyID keyid = fullpubkey.GetID();
+ if (!provider.GetKey(keyid, key)) {
+ b[0] = 0x03;
+ fullpubkey.Set(b, b + 33);
+ CKeyID keyid = fullpubkey.GetID();
+ if (!provider.GetKey(keyid, key)) return false;
+ }
+ }
+
+ // BIP341/BIP342 signing needs lots of precomputed transaction data. While some
+ // (non-SIGHASH_DEFAULT) sighash modes exist that can work with just some subset
+ // of data present, for now, only support signing when everything is provided.
+ if (!m_txdata || !m_txdata->m_bip341_taproot_ready || !m_txdata->m_spent_outputs_ready) return false;
+
+ ScriptExecutionData execdata;
+ execdata.m_annex_init = true;
+ execdata.m_annex_present = false; // Only support annex-less signing for now.
+ if (sigversion == SigVersion::TAPSCRIPT) {
+ execdata.m_codeseparator_pos_init = true;
+ execdata.m_codeseparator_pos = 0xFFFFFFFF; // Only support non-OP_CODESEPARATOR BIP342 signing for now.
+ if (!leaf_hash) return false; // BIP342 signing needs leaf hash.
+ execdata.m_tapleaf_hash_init = true;
+ execdata.m_tapleaf_hash = *leaf_hash;
+ }
+ uint256 hash;
+ if (!SignatureHashSchnorr(hash, execdata, *txTo, nIn, nHashType, sigversion, *m_txdata, MissingDataBehavior::FAIL)) return false;
+ sig.resize(64);
+ if (!key.SignSchnorr(hash, sig, merkle_root, nullptr)) return false;
+ if (nHashType) sig.push_back(nHashType);
return true;
}
@@ -92,6 +155,86 @@ static bool CreateSig(const BaseSignatureCreator& creator, SignatureData& sigdat
return false;
}
+static bool CreateTaprootScriptSig(const BaseSignatureCreator& creator, SignatureData& sigdata, const SigningProvider& provider, std::vector<unsigned char>& sig_out, const XOnlyPubKey& pubkey, const uint256& leaf_hash, SigVersion sigversion)
+{
+ auto lookup_key = std::make_pair(pubkey, leaf_hash);
+ auto it = sigdata.taproot_script_sigs.find(lookup_key);
+ if (it != sigdata.taproot_script_sigs.end()) {
+ sig_out = it->second;
+ }
+ if (creator.CreateSchnorrSig(provider, sig_out, pubkey, &leaf_hash, nullptr, sigversion)) {
+ sigdata.taproot_script_sigs[lookup_key] = sig_out;
+ return true;
+ }
+ return false;
+}
+
+static bool SignTaprootScript(const SigningProvider& provider, const BaseSignatureCreator& creator, SignatureData& sigdata, int leaf_version, const CScript& script, std::vector<valtype>& result)
+{
+ // Only BIP342 tapscript signing is supported for now.
+ if (leaf_version != TAPROOT_LEAF_TAPSCRIPT) return false;
+ SigVersion sigversion = SigVersion::TAPSCRIPT;
+
+ uint256 leaf_hash = (CHashWriter(HASHER_TAPLEAF) << uint8_t(leaf_version) << script).GetSHA256();
+
+ // <xonly pubkey> OP_CHECKSIG
+ if (script.size() == 34 && script[33] == OP_CHECKSIG && script[0] == 0x20) {
+ XOnlyPubKey pubkey(MakeSpan(script).subspan(1, 32));
+ std::vector<unsigned char> sig;
+ if (CreateTaprootScriptSig(creator, sigdata, provider, sig, pubkey, leaf_hash, sigversion)) {
+ result = Vector(std::move(sig));
+ return true;
+ }
+ }
+
+ return false;
+}
+
+static bool SignTaproot(const SigningProvider& provider, const BaseSignatureCreator& creator, const WitnessV1Taproot& output, SignatureData& sigdata, std::vector<valtype>& result)
+{
+ TaprootSpendData spenddata;
+
+ // Gather information about this output.
+ if (provider.GetTaprootSpendData(output, spenddata)) {
+ sigdata.tr_spenddata.Merge(spenddata);
+ }
+
+ // Try key path spending.
+ {
+ std::vector<unsigned char> sig;
+ if (sigdata.taproot_key_path_sig.size() == 0) {
+ if (creator.CreateSchnorrSig(provider, sig, spenddata.internal_key, nullptr, &spenddata.merkle_root, SigVersion::TAPROOT)) {
+ sigdata.taproot_key_path_sig = sig;
+ }
+ }
+ if (sigdata.taproot_key_path_sig.size()) {
+ result = Vector(sigdata.taproot_key_path_sig);
+ return true;
+ }
+ }
+
+ // Try script path spending.
+ std::vector<std::vector<unsigned char>> smallest_result_stack;
+ for (const auto& [key, control_blocks] : sigdata.tr_spenddata.scripts) {
+ const auto& [script, leaf_ver] = key;
+ std::vector<std::vector<unsigned char>> result_stack;
+ if (SignTaprootScript(provider, creator, sigdata, leaf_ver, script, result_stack)) {
+ result_stack.emplace_back(std::begin(script), std::end(script)); // Push the script
+ result_stack.push_back(*control_blocks.begin()); // Push the smallest control block
+ if (smallest_result_stack.size() == 0 ||
+ GetSerializeSize(result_stack, PROTOCOL_VERSION) < GetSerializeSize(smallest_result_stack, PROTOCOL_VERSION)) {
+ smallest_result_stack = std::move(result_stack);
+ }
+ }
+ }
+ if (smallest_result_stack.size() != 0) {
+ result = std::move(smallest_result_stack);
+ return true;
+ }
+
+ return false;
+}
+
/**
* Sign scriptPubKey using signature made with creator.
* Signatures are returned in scriptSigRet (or returns false if scriptPubKey can't be signed),
@@ -113,7 +256,6 @@ static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator
case TxoutType::NONSTANDARD:
case TxoutType::NULL_DATA:
case TxoutType::WITNESS_UNKNOWN:
- case TxoutType::WITNESS_V1_TAPROOT:
return false;
case TxoutType::PUBKEY:
if (!CreateSig(creator, sigdata, provider, sig, CPubKey(vSolutions[0]), scriptPubKey, sigversion)) return false;
@@ -175,6 +317,9 @@ static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator
// Could not find witnessScript, add to missing
sigdata.missing_witness_script = uint256(vSolutions[0]);
return false;
+
+ case TxoutType::WITNESS_V1_TAPROOT:
+ return SignTaproot(provider, creator, WitnessV1Taproot(XOnlyPubKey{vSolutions[0]}), sigdata, ret);
} // no default case, so the compiler can warn about missing cases
assert(false);
}
@@ -205,7 +350,6 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
bool solved = SignStep(provider, creator, fromPubKey, result, whichType, SigVersion::BASE, sigdata);
bool P2SH = false;
CScript subscript;
- sigdata.scriptWitness.stack.clear();
if (solved && whichType == TxoutType::SCRIPTHASH)
{
@@ -238,10 +382,17 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
sigdata.scriptWitness.stack = result;
sigdata.witness = true;
result.clear();
+ } else if (whichType == TxoutType::WITNESS_V1_TAPROOT && !P2SH) {
+ sigdata.witness = true;
+ if (solved) {
+ sigdata.scriptWitness.stack = std::move(result);
+ }
+ result.clear();
} else if (solved && whichType == TxoutType::WITNESS_UNKNOWN) {
sigdata.witness = true;
}
+ if (!sigdata.witness) sigdata.scriptWitness.stack.clear();
if (P2SH) {
result.push_back(std::vector<unsigned char>(subscript.begin(), subscript.end()));
}
@@ -402,6 +553,7 @@ class DummySignatureChecker final : public BaseSignatureChecker
public:
DummySignatureChecker() {}
bool CheckECDSASignature(const std::vector<unsigned char>& scriptSig, const std::vector<unsigned char>& vchPubKey, const CScript& scriptCode, SigVersion sigversion) const override { return true; }
+ bool CheckSchnorrSignature(Span<const unsigned char> sig, Span<const unsigned char> pubkey, SigVersion sigversion, const ScriptExecutionData& execdata, ScriptError* serror) const override { return true; }
};
const DummySignatureChecker DUMMY_CHECKER;
@@ -427,6 +579,11 @@ public:
vchSig[6 + m_r_len + m_s_len] = SIGHASH_ALL;
return true;
}
+ bool CreateSchnorrSig(const SigningProvider& provider, std::vector<unsigned char>& sig, const XOnlyPubKey& pubkey, const uint256* leaf_hash, const uint256* tweak, SigVersion sigversion) const override
+ {
+ sig.assign(64, '\000');
+ return true;
+ }
};
}
@@ -476,6 +633,26 @@ bool SignTransaction(CMutableTransaction& mtx, const SigningProvider* keystore,
// Use CTransaction for the constant parts of the
// transaction to avoid rehashing.
const CTransaction txConst(mtx);
+
+ PrecomputedTransactionData txdata;
+ std::vector<CTxOut> spent_outputs;
+ spent_outputs.resize(mtx.vin.size());
+ bool have_all_spent_outputs = true;
+ for (unsigned int i = 0; i < mtx.vin.size(); i++) {
+ CTxIn& txin = mtx.vin[i];
+ auto coin = coins.find(txin.prevout);
+ if (coin == coins.end() || coin->second.IsSpent()) {
+ have_all_spent_outputs = false;
+ } else {
+ spent_outputs[i] = CTxOut(coin->second.out.nValue, coin->second.out.scriptPubKey);
+ }
+ }
+ if (have_all_spent_outputs) {
+ txdata.Init(txConst, std::move(spent_outputs), true);
+ } else {
+ txdata.Init(txConst, {}, true);
+ }
+
// Sign what we can:
for (unsigned int i = 0; i < mtx.vin.size(); i++) {
CTxIn& txin = mtx.vin[i];
@@ -490,7 +667,7 @@ bool SignTransaction(CMutableTransaction& mtx, const SigningProvider* keystore,
SignatureData sigdata = DataFromTransaction(mtx, i, coin->second.out);
// Only sign SIGHASH_SINGLE if there's a corresponding output:
if (!fHashSingle || (i < mtx.vout.size())) {
- ProduceSignature(*keystore, MutableTransactionSignatureCreator(&mtx, i, amount, nHashType), prevPubKey, sigdata);
+ ProduceSignature(*keystore, MutableTransactionSignatureCreator(&mtx, i, amount, &txdata, nHashType), prevPubKey, sigdata);
}
UpdateInput(txin, sigdata);
@@ -502,7 +679,7 @@ bool SignTransaction(CMutableTransaction& mtx, const SigningProvider* keystore,
}
ScriptError serror = SCRIPT_ERR_OK;
- if (!VerifyScript(txin.scriptSig, prevPubKey, &txin.scriptWitness, STANDARD_SCRIPT_VERIFY_FLAGS, TransactionSignatureChecker(&txConst, i, amount, MissingDataBehavior::FAIL), &serror)) {
+ if (!VerifyScript(txin.scriptSig, prevPubKey, &txin.scriptWitness, STANDARD_SCRIPT_VERIFY_FLAGS, TransactionSignatureChecker(&txConst, i, amount, txdata, MissingDataBehavior::FAIL), &serror)) {
if (serror == SCRIPT_ERR_INVALID_STACK_OPERATION) {
// Unable to sign input and verification failed (possible attempt to partially sign).
input_errors[i] = "Unable to sign input, invalid stack size (possibly missing key)";
diff --git a/src/script/sign.h b/src/script/sign.h
index a1cfe1574d..b4e7318892 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -11,13 +11,13 @@
#include <pubkey.h>
#include <script/interpreter.h>
#include <script/keyorigin.h>
+#include <script/standard.h>
#include <span.h>
#include <streams.h>
class CKey;
class CKeyID;
class CScript;
-class CScriptID;
class CTransaction;
class SigningProvider;
@@ -31,6 +31,7 @@ public:
/** Create a singular (non-script) signature. */
virtual bool CreateSig(const SigningProvider& provider, std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const =0;
+ virtual bool CreateSchnorrSig(const SigningProvider& provider, std::vector<unsigned char>& sig, const XOnlyPubKey& pubkey, const uint256* leaf_hash, const uint256* merkle_root, SigVersion sigversion) const =0;
};
/** A signature creator for transactions. */
@@ -40,11 +41,14 @@ class MutableTransactionSignatureCreator : public BaseSignatureCreator {
int nHashType;
CAmount amount;
const MutableTransactionSignatureChecker checker;
+ const PrecomputedTransactionData* m_txdata;
public:
MutableTransactionSignatureCreator(const CMutableTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, int nHashTypeIn = SIGHASH_ALL);
+ MutableTransactionSignatureCreator(const CMutableTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, const PrecomputedTransactionData* txdata, int nHashTypeIn = SIGHASH_ALL);
const BaseSignatureChecker& Checker() const override { return checker; }
bool CreateSig(const SigningProvider& provider, std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const override;
+ bool CreateSchnorrSig(const SigningProvider& provider, std::vector<unsigned char>& sig, const XOnlyPubKey& pubkey, const uint256* leaf_hash, const uint256* merkle_root, SigVersion sigversion) const override;
};
/** A signature creator that just produces 71-byte empty signatures. */
@@ -64,8 +68,11 @@ struct SignatureData {
CScript redeem_script; ///< The redeemScript (if any) for the input
CScript witness_script; ///< The witnessScript (if any) for the input. witnessScripts are used in P2WSH outputs.
CScriptWitness scriptWitness; ///< The scriptWitness of an input. Contains complete signatures or the traditional partial signatures format. scriptWitness is part of a transaction input per BIP 144.
+ TaprootSpendData tr_spenddata; ///< Taproot spending data.
std::map<CKeyID, SigPair> signatures; ///< BIP 174 style partial signatures for the input. May contain all signatures necessary for producing a final scriptSig or scriptWitness.
std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>> misc_pubkeys;
+ std::vector<unsigned char> taproot_key_path_sig; /// Schnorr signature for key path spending
+ std::map<std::pair<XOnlyPubKey, uint256>, std::vector<unsigned char>> taproot_script_sigs; ///< (Partial) schnorr signatures, indexed by XOnlyPubKey and leaf_hash.
std::vector<CKeyID> missing_pubkeys; ///< KeyIDs of pubkeys which could not be found
std::vector<CKeyID> missing_sigs; ///< KeyIDs of pubkeys for signatures which could not be found
uint160 missing_redeem_script; ///< ScriptID of the missing redeemScript (if any)
diff --git a/src/script/signingprovider.cpp b/src/script/signingprovider.cpp
index 9781ec32af..b80fbe22ce 100644
--- a/src/script/signingprovider.cpp
+++ b/src/script/signingprovider.cpp
@@ -44,6 +44,11 @@ bool HidingSigningProvider::GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& inf
return m_provider->GetKeyOrigin(keyid, info);
}
+bool HidingSigningProvider::GetTaprootSpendData(const XOnlyPubKey& output_key, TaprootSpendData& spenddata) const
+{
+ return m_provider->GetTaprootSpendData(output_key, spenddata);
+}
+
bool FlatSigningProvider::GetCScript(const CScriptID& scriptid, CScript& script) const { return LookupHelper(scripts, scriptid, script); }
bool FlatSigningProvider::GetPubKey(const CKeyID& keyid, CPubKey& pubkey) const { return LookupHelper(pubkeys, keyid, pubkey); }
bool FlatSigningProvider::GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const
@@ -54,6 +59,10 @@ bool FlatSigningProvider::GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info)
return ret;
}
bool FlatSigningProvider::GetKey(const CKeyID& keyid, CKey& key) const { return LookupHelper(keys, keyid, key); }
+bool FlatSigningProvider::GetTaprootSpendData(const XOnlyPubKey& output_key, TaprootSpendData& spenddata) const
+{
+ return LookupHelper(tr_spenddata, output_key, spenddata);
+}
FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvider& b)
{
@@ -66,6 +75,10 @@ FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvide
ret.keys.insert(b.keys.begin(), b.keys.end());
ret.origins = a.origins;
ret.origins.insert(b.origins.begin(), b.origins.end());
+ ret.tr_spenddata = a.tr_spenddata;
+ for (const auto& [output_key, spenddata] : b.tr_spenddata) {
+ ret.tr_spenddata[output_key].Merge(spenddata);
+ }
return ret;
}
diff --git a/src/script/signingprovider.h b/src/script/signingprovider.h
index 76f31d2f6f..939ae10622 100644
--- a/src/script/signingprovider.h
+++ b/src/script/signingprovider.h
@@ -25,6 +25,7 @@ public:
virtual bool GetKey(const CKeyID &address, CKey& key) const { return false; }
virtual bool HaveKey(const CKeyID &address) const { return false; }
virtual bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const { return false; }
+ virtual bool GetTaprootSpendData(const XOnlyPubKey& output_key, TaprootSpendData& spenddata) const { return false; }
};
extern const SigningProvider& DUMMY_SIGNING_PROVIDER;
@@ -42,6 +43,7 @@ public:
bool GetPubKey(const CKeyID& keyid, CPubKey& pubkey) const override;
bool GetKey(const CKeyID& keyid, CKey& key) const override;
bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const override;
+ bool GetTaprootSpendData(const XOnlyPubKey& output_key, TaprootSpendData& spenddata) const override;
};
struct FlatSigningProvider final : public SigningProvider
@@ -50,11 +52,13 @@ struct FlatSigningProvider final : public SigningProvider
std::map<CKeyID, CPubKey> pubkeys;
std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>> origins;
std::map<CKeyID, CKey> keys;
+ std::map<XOnlyPubKey, TaprootSpendData> tr_spenddata; /** Map from output key to spend data. */
bool GetCScript(const CScriptID& scriptid, CScript& script) const override;
bool GetPubKey(const CKeyID& keyid, CPubKey& pubkey) const override;
bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const override;
bool GetKey(const CKeyID& keyid, CKey& key) const override;
+ bool GetTaprootSpendData(const XOnlyPubKey& output_key, TaprootSpendData& spenddata) const override;
};
FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvider& b);
diff --git a/src/script/standard.cpp b/src/script/standard.cpp
index a4b11cc0a9..748f00dda5 100644
--- a/src/script/standard.cpp
+++ b/src/script/standard.cpp
@@ -377,6 +377,16 @@ bool IsValidDestination(const CTxDestination& dest) {
/*static*/ TaprootBuilder::NodeInfo TaprootBuilder::Combine(NodeInfo&& a, NodeInfo&& b)
{
NodeInfo ret;
+ /* Iterate over all tracked leaves in a, add b's hash to their Merkle branch, and move them to ret. */
+ for (auto& leaf : a.leaves) {
+ leaf.merkle_branch.push_back(b.hash);
+ ret.leaves.emplace_back(std::move(leaf));
+ }
+ /* Iterate over all tracked leaves in b, add a's hash to their Merkle branch, and move them to ret. */
+ for (auto& leaf : b.leaves) {
+ leaf.merkle_branch.push_back(a.hash);
+ ret.leaves.emplace_back(std::move(leaf));
+ }
/* Lexicographically sort a and b's hash, and compute parent hash. */
if (a.hash < b.hash) {
ret.hash = (CHashWriter(HASHER_TAPBRANCH) << a.hash << b.hash).GetSHA256();
@@ -386,6 +396,21 @@ bool IsValidDestination(const CTxDestination& dest) {
return ret;
}
+void TaprootSpendData::Merge(TaprootSpendData other)
+{
+ // TODO: figure out how to better deal with conflicting information
+ // being merged.
+ if (internal_key.IsNull() && !other.internal_key.IsNull()) {
+ internal_key = other.internal_key;
+ }
+ if (merkle_root.IsNull() && !other.merkle_root.IsNull()) {
+ merkle_root = other.merkle_root;
+ }
+ for (auto& [key, control_blocks] : other.scripts) {
+ scripts[key].merge(std::move(control_blocks));
+ }
+}
+
void TaprootBuilder::Insert(TaprootBuilder::NodeInfo&& node, int depth)
{
assert(depth >= 0 && (size_t)depth <= TAPROOT_CONTROL_MAX_NODE_COUNT);
@@ -435,13 +460,14 @@ void TaprootBuilder::Insert(TaprootBuilder::NodeInfo&& node, int depth)
return branch.size() == 0 || (branch.size() == 1 && branch[0]);
}
-TaprootBuilder& TaprootBuilder::Add(int depth, const CScript& script, int leaf_version)
+TaprootBuilder& TaprootBuilder::Add(int depth, const CScript& script, int leaf_version, bool track)
{
assert((leaf_version & ~TAPROOT_LEAF_MASK) == 0);
if (!IsValid()) return *this;
- /* Construct NodeInfo object with leaf hash. */
+ /* Construct NodeInfo object with leaf hash and (if track is true) also leaf information. */
NodeInfo node;
node.hash = (CHashWriter{HASHER_TAPLEAF} << uint8_t(leaf_version) << script).GetSHA256();
+ if (track) node.leaves.emplace_back(LeafInfo{script, leaf_version, {}});
/* Insert into the branch. */
Insert(std::move(node), depth);
return *this;
@@ -464,8 +490,33 @@ TaprootBuilder& TaprootBuilder::Finalize(const XOnlyPubKey& internal_key)
m_internal_key = internal_key;
auto ret = m_internal_key.CreateTapTweak(m_branch.size() == 0 ? nullptr : &m_branch[0]->hash);
assert(ret.has_value());
- std::tie(m_output_key, std::ignore) = *ret;
+ std::tie(m_output_key, m_parity) = *ret;
return *this;
}
WitnessV1Taproot TaprootBuilder::GetOutput() { return WitnessV1Taproot{m_output_key}; }
+
+TaprootSpendData TaprootBuilder::GetSpendData() const
+{
+ TaprootSpendData spd;
+ spd.merkle_root = m_branch.size() == 0 ? uint256() : m_branch[0]->hash;
+ spd.internal_key = m_internal_key;
+ if (m_branch.size()) {
+ // If any script paths exist, they have been combined into the root m_branch[0]
+ // by now. Compute the control block for each of its tracked leaves, and put them in
+ // spd.scripts.
+ for (const auto& leaf : m_branch[0]->leaves) {
+ std::vector<unsigned char> control_block;
+ control_block.resize(TAPROOT_CONTROL_BASE_SIZE + TAPROOT_CONTROL_NODE_SIZE * leaf.merkle_branch.size());
+ control_block[0] = leaf.leaf_version | (m_parity ? 1 : 0);
+ std::copy(m_internal_key.begin(), m_internal_key.end(), control_block.begin() + 1);
+ if (leaf.merkle_branch.size()) {
+ std::copy(leaf.merkle_branch[0].begin(),
+ leaf.merkle_branch[0].begin() + TAPROOT_CONTROL_NODE_SIZE * leaf.merkle_branch.size(),
+ control_block.begin() + TAPROOT_CONTROL_BASE_SIZE);
+ }
+ spd.scripts[{leaf.script, leaf.leaf_version}].insert(std::move(control_block));
+ }
+ }
+ return spd;
+}
diff --git a/src/script/standard.h b/src/script/standard.h
index d7ea5cef27..285dd4c116 100644
--- a/src/script/standard.h
+++ b/src/script/standard.h
@@ -11,6 +11,7 @@
#include <uint256.h>
#include <util/hash_type.h>
+#include <map>
#include <string>
#include <variant>
@@ -209,15 +210,50 @@ CScript GetScriptForRawPubKey(const CPubKey& pubkey);
/** Generate a multisig script. */
CScript GetScriptForMultisig(int nRequired, const std::vector<CPubKey>& keys);
+struct ShortestVectorFirstComparator
+{
+ bool operator()(const std::vector<unsigned char>& a, const std::vector<unsigned char>& b) const
+ {
+ if (a.size() < b.size()) return true;
+ if (a.size() > b.size()) return false;
+ return a < b;
+ }
+};
+
+struct TaprootSpendData
+{
+ /** The BIP341 internal key. */
+ XOnlyPubKey internal_key;
+ /** The Merkle root of the script tree (0 if no scripts). */
+ uint256 merkle_root;
+ /** Map from (script, leaf_version) to (sets of) control blocks.
+ * The control blocks are sorted by size, so that the signing logic can
+ * easily prefer the cheapest one. */
+ std::map<std::pair<CScript, int>, std::set<std::vector<unsigned char>, ShortestVectorFirstComparator>> scripts;
+ /** Merge other TaprootSpendData (for the same scriptPubKey) into this. */
+ void Merge(TaprootSpendData other);
+};
+
/** Utility class to construct Taproot outputs from internal key and script tree. */
class TaprootBuilder
{
private:
+ /** Information about a tracked leaf in the Merkle tree. */
+ struct LeafInfo
+ {
+ CScript script; //!< The script.
+ int leaf_version; //!< The leaf version for that script.
+ std::vector<uint256> merkle_branch; //!< The hashing partners above this leaf.
+ };
+
/** Information associated with a node in the Merkle tree. */
struct NodeInfo
{
/** Merkle hash of this node. */
uint256 hash;
+ /** Tracked leaves underneath this node (either from the node itself, or its children).
+ * The merkle_branch field for each is the partners to get to *this* node. */
+ std::vector<LeafInfo> leaves;
};
/** Whether the builder is in a valid state so far. */
bool m_valid = true;
@@ -260,7 +296,8 @@ private:
std::vector<std::optional<NodeInfo>> m_branch;
XOnlyPubKey m_internal_key; //!< The internal key, set when finalizing.
- XOnlyPubKey m_output_key; //!< The output key, computed when finalizing. */
+ XOnlyPubKey m_output_key; //!< The output key, computed when finalizing.
+ bool m_parity; //!< The tweak parity, computed when finalizing.
/** Combine information about a parent Merkle tree node from its child nodes. */
static NodeInfo Combine(NodeInfo&& a, NodeInfo&& b);
@@ -269,8 +306,9 @@ private:
public:
/** Add a new script at a certain depth in the tree. Add() operations must be called
- * in depth-first traversal order of binary tree. */
- TaprootBuilder& Add(int depth, const CScript& script, int leaf_version);
+ * in depth-first traversal order of binary tree. If track is true, it will be included in
+ * the GetSpendData() output. */
+ TaprootBuilder& Add(int depth, const CScript& script, int leaf_version, bool track = true);
/** Like Add(), but for a Merkle node with a given hash to the tree. */
TaprootBuilder& AddOmitted(int depth, const uint256& hash);
/** Finalize the construction. Can only be called when IsComplete() is true.
@@ -285,6 +323,8 @@ public:
WitnessV1Taproot GetOutput();
/** Check if a list of depths is legal (will lead to IsComplete()). */
static bool ValidDepths(const std::vector<int>& depths);
+ /** Compute spending data (after Finalize()). */
+ TaprootSpendData GetSpendData() const;
};
#endif // BITCOIN_SCRIPT_STANDARD_H
diff --git a/src/test/key_tests.cpp b/src/test/key_tests.cpp
index cb66d5164e..b915982d98 100644
--- a/src/test/key_tests.cpp
+++ b/src/test/key_tests.cpp
@@ -300,6 +300,48 @@ BOOST_AUTO_TEST_CASE(bip340_test_vectors)
auto sig = ParseHex(test.first[2]);
BOOST_CHECK_EQUAL(XOnlyPubKey(pubkey).VerifySchnorr(uint256(msg), sig), test.second);
}
+
+ static const std::vector<std::array<std::string, 5>> SIGN_VECTORS = {
+ {{"0000000000000000000000000000000000000000000000000000000000000003", "F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9", "0000000000000000000000000000000000000000000000000000000000000000", "0000000000000000000000000000000000000000000000000000000000000000", "E907831F80848D1069A5371B402410364BDF1C5F8307B0084C55F1CE2DCA821525F66A4A85EA8B71E482A74F382D2CE5EBEEE8FDB2172F477DF4900D310536C0"}},
+ {{"B7E151628AED2A6ABF7158809CF4F3C762E7160F38B4DA56A784D9045190CFEF", "DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "0000000000000000000000000000000000000000000000000000000000000001", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6896BD60EEAE296DB48A229FF71DFE071BDE413E6D43F917DC8DCF8C78DE33418906D11AC976ABCCB20B091292BFF4EA897EFCB639EA871CFA95F6DE339E4B0A"}},
+ {{"C90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B14E5C9", "DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EB8", "C87AA53824B4D7AE2EB035A2B5BBBCCC080E76CDC6D1692C4B0B62D798E6D906", "7E2D58D8B3BCDF1ABADEC7829054F90DDA9805AAB56C77333024B9D0A508B75C", "5831AAEED7B44BB74E5EAB94BA9D4294C49BCF2A60728D8B4C200F50DD313C1BAB745879A5AD954A72C45A91C3A51D3C7ADEA98D82F8481E0E1E03674A6F3FB7"}},
+ {{"0B432B2677937381AEF05BB02A66ECD012773062CF3FA2549E44F58ED2401710", "25D1DFF95105F5253C4022F628A996AD3A0D95FBF21D468A1B33F8C160D8F517", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "7EB0509757E246F19449885651611CB965ECC1A187DD51B64FDA1EDC9637D5EC97582B9CB13DB3933705B32BA982AF5AF25FD78881EBB32771FC5922EFC66EA3"}},
+ };
+
+ for (const auto& [sec_hex, pub_hex, aux_hex, msg_hex, sig_hex] : SIGN_VECTORS) {
+ auto sec = ParseHex(sec_hex);
+ auto pub = ParseHex(pub_hex);
+ uint256 aux256(ParseHex(aux_hex));
+ uint256 msg256(ParseHex(msg_hex));
+ auto sig = ParseHex(sig_hex);
+ unsigned char sig64[64];
+
+ // Run the untweaked test vectors above, comparing with exact expected signature.
+ CKey key;
+ key.Set(sec.begin(), sec.end(), true);
+ XOnlyPubKey pubkey(key.GetPubKey());
+ BOOST_CHECK(std::equal(pubkey.begin(), pubkey.end(), pub.begin(), pub.end()));
+ bool ok = key.SignSchnorr(msg256, sig64, nullptr, &aux256);
+ BOOST_CHECK(ok);
+ BOOST_CHECK(std::vector<unsigned char>(sig64, sig64 + 64) == sig);
+ // Verify those signatures for good measure.
+ BOOST_CHECK(pubkey.VerifySchnorr(msg256, sig64));
+
+ // Do 10 iterations where we sign with a random Merkle root to tweak,
+ // and compare against the resulting tweaked keys, with random aux.
+ // In iteration i=0 we tweak with empty Merkle tree.
+ for (int i = 0; i < 10; ++i) {
+ uint256 merkle_root;
+ if (i) merkle_root = InsecureRand256();
+ auto tweaked = pubkey.CreateTapTweak(i ? &merkle_root : nullptr);
+ BOOST_CHECK(tweaked);
+ XOnlyPubKey tweaked_key = tweaked->first;
+ aux256 = InsecureRand256();
+ bool ok = key.SignSchnorr(msg256, sig64, &merkle_root, &aux256);
+ BOOST_CHECK(ok);
+ BOOST_CHECK(tweaked_key.VerifySchnorr(msg256, sig64));
+ }
+ }
}
BOOST_AUTO_TEST_SUITE_END()
diff --git a/src/wallet/external_signer_scriptpubkeyman.cpp b/src/wallet/external_signer_scriptpubkeyman.cpp
index e5464c5b89..efef1ec754 100644
--- a/src/wallet/external_signer_scriptpubkeyman.cpp
+++ b/src/wallet/external_signer_scriptpubkeyman.cpp
@@ -60,10 +60,10 @@ bool ExternalSignerScriptPubKeyMan::DisplayAddress(const CScript scriptPubKey, c
}
// If sign is true, transaction must previously have been filled
-TransactionError ExternalSignerScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psbt, int sighash_type, bool sign, bool bip32derivs, int* n_signed) const
+TransactionError ExternalSignerScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psbt, const PrecomputedTransactionData& txdata, int sighash_type, bool sign, bool bip32derivs, int* n_signed) const
{
if (!sign) {
- return DescriptorScriptPubKeyMan::FillPSBT(psbt, sighash_type, false, bip32derivs, n_signed);
+ return DescriptorScriptPubKeyMan::FillPSBT(psbt, txdata, sighash_type, false, bip32derivs, n_signed);
}
// Already complete if every input is now signed
diff --git a/src/wallet/external_signer_scriptpubkeyman.h b/src/wallet/external_signer_scriptpubkeyman.h
index 5df1e6d939..8eed947b7b 100644
--- a/src/wallet/external_signer_scriptpubkeyman.h
+++ b/src/wallet/external_signer_scriptpubkeyman.h
@@ -28,6 +28,6 @@ class ExternalSignerScriptPubKeyMan : public DescriptorScriptPubKeyMan
bool DisplayAddress(const CScript scriptPubKey, const ExternalSigner &signer) const;
- TransactionError FillPSBT(PartiallySignedTransaction& psbt, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr) const override;
+ TransactionError FillPSBT(PartiallySignedTransaction& psbt, const PrecomputedTransactionData& txdata, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr) const override;
};
#endif // BITCOIN_WALLET_EXTERNAL_SIGNER_SCRIPTPUBKEYMAN_H
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 534c974178..ab34af2329 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -3320,7 +3320,8 @@ RPCHelpMan signrawtransactionwithwallet()
},
},
},
- {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"ALL"}, "The signature hash type. Must be one of\n"
+ {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"DEFAULT"}, "The signature hash type. Must be one of\n"
+ " \"DEFAULT\"\n"
" \"ALL\"\n"
" \"NONE\"\n"
" \"SINGLE\"\n"
@@ -3542,7 +3543,7 @@ static RPCHelpMan bumpfee_helper(std::string method_name)
} else {
PartiallySignedTransaction psbtx(mtx);
bool complete = false;
- const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_ALL, false /* sign */, true /* bip32derivs */);
+ const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, false /* sign */, true /* bip32derivs */);
CHECK_NONFATAL(err == TransactionError::OK);
CHECK_NONFATAL(!complete);
CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
@@ -4175,8 +4176,8 @@ static RPCHelpMan send()
// First fill transaction with our data without signing,
// so external signers are not asked sign more than once.
bool complete;
- pwallet->FillPSBT(psbtx, complete, SIGHASH_ALL, false, true);
- const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_ALL, true, false);
+ pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, false, true);
+ const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_DEFAULT, true, false);
if (err != TransactionError::OK) {
throw JSONRPCTransactionError(err);
}
@@ -4291,7 +4292,8 @@ static RPCHelpMan walletprocesspsbt()
{
{"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "The transaction base64 string"},
{"sign", RPCArg::Type::BOOL, RPCArg::Default{true}, "Also sign the transaction when updating"},
- {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"ALL"}, "The signature hash type to sign with if not specified by the PSBT. Must be one of\n"
+ {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"DEFAULT"}, "The signature hash type to sign with if not specified by the PSBT. Must be one of\n"
+ " \"DEFAULT\"\n"
" \"ALL\"\n"
" \"NONE\"\n"
" \"SINGLE\"\n"
diff --git a/src/wallet/scriptpubkeyman.cpp b/src/wallet/scriptpubkeyman.cpp
index 6af936b1ac..c8baa0665e 100644
--- a/src/wallet/scriptpubkeyman.cpp
+++ b/src/wallet/scriptpubkeyman.cpp
@@ -596,7 +596,7 @@ SigningResult LegacyScriptPubKeyMan::SignMessage(const std::string& message, con
return SigningResult::SIGNING_FAILED;
}
-TransactionError LegacyScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psbtx, int sighash_type, bool sign, bool bip32derivs, int* n_signed) const
+TransactionError LegacyScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psbtx, const PrecomputedTransactionData& txdata, int sighash_type, bool sign, bool bip32derivs, int* n_signed) const
{
if (n_signed) {
*n_signed = 0;
@@ -625,7 +625,7 @@ TransactionError LegacyScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psb
}
SignatureData sigdata;
input.FillSignatureData(sigdata);
- SignPSBTInput(HidingSigningProvider(this, !sign, !bip32derivs), psbtx, i, sighash_type);
+ SignPSBTInput(HidingSigningProvider(this, !sign, !bip32derivs), psbtx, i, &txdata, sighash_type);
bool signed_one = PSBTInputSigned(input);
if (n_signed && (signed_one || !sign)) {
@@ -2082,7 +2082,7 @@ SigningResult DescriptorScriptPubKeyMan::SignMessage(const std::string& message,
return SigningResult::OK;
}
-TransactionError DescriptorScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psbtx, int sighash_type, bool sign, bool bip32derivs, int* n_signed) const
+TransactionError DescriptorScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psbtx, const PrecomputedTransactionData& txdata, int sighash_type, bool sign, bool bip32derivs, int* n_signed) const
{
if (n_signed) {
*n_signed = 0;
@@ -2132,7 +2132,7 @@ TransactionError DescriptorScriptPubKeyMan::FillPSBT(PartiallySignedTransaction&
}
}
- SignPSBTInput(HidingSigningProvider(keys.get(), !sign, !bip32derivs), psbtx, i, sighash_type);
+ SignPSBTInput(HidingSigningProvider(keys.get(), !sign, !bip32derivs), psbtx, i, &txdata, sighash_type);
bool signed_one = PSBTInputSigned(input);
if (n_signed && (signed_one || !sign)) {
diff --git a/src/wallet/scriptpubkeyman.h b/src/wallet/scriptpubkeyman.h
index b8e34fbac3..3c4603608c 100644
--- a/src/wallet/scriptpubkeyman.h
+++ b/src/wallet/scriptpubkeyman.h
@@ -235,7 +235,7 @@ public:
/** Sign a message with the given script */
virtual SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const { return SigningResult::SIGNING_FAILED; };
/** Adds script and derivation path information to a PSBT, and optionally signs it. */
- virtual TransactionError FillPSBT(PartiallySignedTransaction& psbt, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr) const { return TransactionError::INVALID_PSBT; }
+ virtual TransactionError FillPSBT(PartiallySignedTransaction& psbt, const PrecomputedTransactionData& txdata, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr) const { return TransactionError::INVALID_PSBT; }
virtual uint256 GetID() const { return uint256(); }
@@ -394,7 +394,7 @@ public:
bool SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const override;
SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const override;
- TransactionError FillPSBT(PartiallySignedTransaction& psbt, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr) const override;
+ TransactionError FillPSBT(PartiallySignedTransaction& psbt, const PrecomputedTransactionData& txdata, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr) const override;
uint256 GetID() const override;
@@ -605,7 +605,7 @@ public:
bool SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const override;
SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const override;
- TransactionError FillPSBT(PartiallySignedTransaction& psbt, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr) const override;
+ TransactionError FillPSBT(PartiallySignedTransaction& psbt, const PrecomputedTransactionData& txdata, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr) const override;
uint256 GetID() const override;
diff --git a/src/wallet/test/psbt_wallet_tests.cpp b/src/wallet/test/psbt_wallet_tests.cpp
index ce7e661b67..1cefa386b7 100644
--- a/src/wallet/test/psbt_wallet_tests.cpp
+++ b/src/wallet/test/psbt_wallet_tests.cpp
@@ -71,7 +71,7 @@ BOOST_AUTO_TEST_CASE(psbt_updater_test)
// Try to sign the mutated input
SignatureData sigdata;
- BOOST_CHECK(spk_man->FillPSBT(psbtx, SIGHASH_ALL, true, true) != TransactionError::OK);
+ BOOST_CHECK(spk_man->FillPSBT(psbtx, PrecomputePSBTData(psbtx), SIGHASH_ALL, true, true) != TransactionError::OK);
}
BOOST_AUTO_TEST_CASE(parse_hd_keypath)
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 073d5e269b..256faf2b23 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1808,7 +1808,7 @@ bool CWallet::SignTransaction(CMutableTransaction& tx) const
coins[input.prevout] = Coin(wtx.tx->vout[input.prevout.n], wtx.m_confirm.block_height, wtx.IsCoinBase());
}
std::map<int, std::string> input_errors;
- return SignTransaction(tx, coins, SIGHASH_ALL, input_errors);
+ return SignTransaction(tx, coins, SIGHASH_DEFAULT, input_errors);
}
bool CWallet::SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const
@@ -1831,6 +1831,7 @@ TransactionError CWallet::FillPSBT(PartiallySignedTransaction& psbtx, bool& comp
if (n_signed) {
*n_signed = 0;
}
+ const PrecomputedTransactionData txdata = PrecomputePSBTData(psbtx);
LOCK(cs_wallet);
// Get all of the previous transactions
for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
@@ -1857,7 +1858,7 @@ TransactionError CWallet::FillPSBT(PartiallySignedTransaction& psbtx, bool& comp
// Fill in information from ScriptPubKeyMans
for (ScriptPubKeyMan* spk_man : GetAllScriptPubKeyMans()) {
int n_signed_this_spkm = 0;
- TransactionError res = spk_man->FillPSBT(psbtx, sighash_type, sign, bip32derivs, &n_signed_this_spkm);
+ TransactionError res = spk_man->FillPSBT(psbtx, txdata, sighash_type, sign, bip32derivs, &n_signed_this_spkm);
if (res != TransactionError::OK) {
return res;
}
diff --git a/test/functional/wallet_taproot.py b/test/functional/wallet_taproot.py
index 5803c0cf54..1547a90125 100755
--- a/test/functional/wallet_taproot.py
+++ b/test/functional/wallet_taproot.py
@@ -6,6 +6,7 @@
import random
+from decimal import Decimal
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal
from test_framework.descriptors import descsum_create
@@ -233,20 +234,85 @@ class WalletTaprootTest(BitcoinTestFramework):
# tr descriptors cannot be imported when Taproot is not active
result = self.privs_tr_enabled.importdescriptors([{"desc": desc, "timestamp": "now"}])
assert(result[0]["success"])
- result = self.privs_tr_disabled.importdescriptors([{"desc": desc, "timestamp": "now"}])
- assert(not result[0]["success"])
- assert_equal(result[0]["error"]["code"], -4)
- assert_equal(result[0]["error"]["message"], "Cannot import tr() descriptor when Taproot is not active")
result = self.pubs_tr_enabled.importdescriptors([{"desc": desc_pub, "timestamp": "now"}])
assert(result[0]["success"])
- result = self.pubs_tr_disabled.importdescriptors([{"desc": desc_pub, "timestamp": "now"}])
- assert(not result[0]["success"])
- assert_equal(result[0]["error"]["code"], -4)
- assert_equal(result[0]["error"]["message"], "Cannot import tr() descriptor when Taproot is not active")
+ if desc.startswith("tr"):
+ result = self.privs_tr_disabled.importdescriptors([{"desc": desc, "timestamp": "now"}])
+ assert(not result[0]["success"])
+ assert_equal(result[0]["error"]["code"], -4)
+ assert_equal(result[0]["error"]["message"], "Cannot import tr() descriptor when Taproot is not active")
+ result = self.pubs_tr_disabled.importdescriptors([{"desc": desc_pub, "timestamp": "now"}])
+ assert(not result[0]["success"])
+ assert_equal(result[0]["error"]["code"], -4)
+ assert_equal(result[0]["error"]["message"], "Cannot import tr() descriptor when Taproot is not active")
+
+ def do_test_sendtoaddress(self, comment, pattern, privmap, treefn, keys_pay, keys_change):
+ self.log.info("Testing %s through sendtoaddress" % comment)
+ desc_pay = self.make_desc(pattern, privmap, keys_pay)
+ desc_change = self.make_desc(pattern, privmap, keys_change)
+ desc_pay_pub = self.make_desc(pattern, privmap, keys_pay, True)
+ desc_change_pub = self.make_desc(pattern, privmap, keys_change, True)
+ assert_equal(self.nodes[0].getdescriptorinfo(desc_pay)['descriptor'], desc_pay_pub)
+ assert_equal(self.nodes[0].getdescriptorinfo(desc_change)['descriptor'], desc_change_pub)
+ result = self.rpc_online.importdescriptors([{"desc": desc_pay, "active": True, "timestamp": "now"}])
+ assert(result[0]['success'])
+ result = self.rpc_online.importdescriptors([{"desc": desc_change, "active": True, "timestamp": "now", "internal": True}])
+ assert(result[0]['success'])
+ for i in range(4):
+ addr_g = self.rpc_online.getnewaddress(address_type='bech32')
+ if treefn is not None:
+ addr_r = self.make_addr(treefn, keys_pay, i)
+ assert_equal(addr_g, addr_r)
+ boring_balance = int(self.boring.getbalance() * 100000000)
+ to_amnt = random.randrange(1000000, boring_balance)
+ self.boring.sendtoaddress(address=addr_g, amount=Decimal(to_amnt) / 100000000, subtractfeefromamount=True)
+ self.nodes[0].generatetoaddress(1, self.boring.getnewaddress())
+ test_balance = int(self.rpc_online.getbalance() * 100000000)
+ ret_amnt = random.randrange(100000, test_balance)
+ res = self.rpc_online.sendtoaddress(address=self.boring.getnewaddress(), amount=Decimal(ret_amnt) / 100000000, subtractfeefromamount=True)
+ self.nodes[0].generatetoaddress(1, self.boring.getnewaddress())
+ assert(self.rpc_online.gettransaction(res)["confirmations"] > 0)
+
+ def do_test_psbt(self, comment, pattern, privmap, treefn, keys_pay, keys_change):
+ self.log.info("Testing %s through PSBT" % comment)
+ desc_pay = self.make_desc(pattern, privmap, keys_pay, False)
+ desc_change = self.make_desc(pattern, privmap, keys_change, False)
+ desc_pay_pub = self.make_desc(pattern, privmap, keys_pay, True)
+ desc_change_pub = self.make_desc(pattern, privmap, keys_change, True)
+ assert_equal(self.nodes[0].getdescriptorinfo(desc_pay)['descriptor'], desc_pay_pub)
+ assert_equal(self.nodes[0].getdescriptorinfo(desc_change)['descriptor'], desc_change_pub)
+ result = self.psbt_online.importdescriptors([{"desc": desc_pay_pub, "active": True, "timestamp": "now"}])
+ assert(result[0]['success'])
+ result = self.psbt_online.importdescriptors([{"desc": desc_change_pub, "active": True, "timestamp": "now", "internal": True}])
+ assert(result[0]['success'])
+ result = self.psbt_offline.importdescriptors([{"desc": desc_pay, "active": True, "timestamp": "now"}])
+ assert(result[0]['success'])
+ result = self.psbt_offline.importdescriptors([{"desc": desc_change, "active": True, "timestamp": "now", "internal": True}])
+ assert(result[0]['success'])
+ for i in range(4):
+ addr_g = self.psbt_online.getnewaddress(address_type='bech32')
+ if treefn is not None:
+ addr_r = self.make_addr(treefn, keys_pay, i)
+ assert_equal(addr_g, addr_r)
+ boring_balance = int(self.boring.getbalance() * 100000000)
+ to_amnt = random.randrange(1000000, boring_balance)
+ self.boring.sendtoaddress(address=addr_g, amount=Decimal(to_amnt) / 100000000, subtractfeefromamount=True)
+ self.nodes[0].generatetoaddress(1, self.boring.getnewaddress())
+ test_balance = int(self.psbt_online.getbalance() * 100000000)
+ ret_amnt = random.randrange(100000, test_balance)
+ psbt = self.psbt_online.walletcreatefundedpsbt([], [{self.boring.getnewaddress(): Decimal(ret_amnt) / 100000000}], None, {"subtractFeeFromOutputs":[0]})['psbt']
+ res = self.psbt_offline.walletprocesspsbt(psbt)
+ assert(res['complete'])
+ rawtx = self.nodes[0].finalizepsbt(res['psbt'])['hex']
+ txid = self.nodes[0].sendrawtransaction(rawtx)
+ self.nodes[0].generatetoaddress(1, self.boring.getnewaddress())
+ assert(self.psbt_online.gettransaction(txid)['confirmations'] > 0)
def do_test(self, comment, pattern, privmap, treefn, nkeys):
- keys = self.rand_keys(nkeys)
- self.do_test_addr(comment, pattern, privmap, treefn, keys)
+ keys = self.rand_keys(nkeys * 4)
+ self.do_test_addr(comment, pattern, privmap, treefn, keys[0:nkeys])
+ self.do_test_sendtoaddress(comment, pattern, privmap, treefn, keys[0:nkeys], keys[nkeys:2*nkeys])
+ self.do_test_psbt(comment, pattern, privmap, treefn, keys[2*nkeys:3*nkeys], keys[3*nkeys:4*nkeys])
def run_test(self):
self.log.info("Creating wallets...")
@@ -258,8 +324,20 @@ class WalletTaprootTest(BitcoinTestFramework):
self.pubs_tr_enabled = self.nodes[0].get_wallet_rpc("pubs_tr_enabled")
self.nodes[2].createwallet(wallet_name="pubs_tr_disabled", descriptors=True, blank=True, disable_private_keys=True)
self.pubs_tr_disabled=self.nodes[2].get_wallet_rpc("pubs_tr_disabled")
+ self.nodes[0].createwallet(wallet_name="boring")
self.nodes[0].createwallet(wallet_name="addr_gen", descriptors=True, disable_private_keys=True, blank=True)
+ self.nodes[0].createwallet(wallet_name="rpc_online", descriptors=True, blank=True)
+ self.nodes[0].createwallet(wallet_name="psbt_online", descriptors=True, disable_private_keys=True, blank=True)
+ self.nodes[1].createwallet(wallet_name="psbt_offline", descriptors=True, blank=True)
+ self.boring = self.nodes[0].get_wallet_rpc("boring")
self.addr_gen = self.nodes[0].get_wallet_rpc("addr_gen")
+ self.rpc_online = self.nodes[0].get_wallet_rpc("rpc_online")
+ self.psbt_online = self.nodes[0].get_wallet_rpc("psbt_online")
+ self.psbt_offline = self.nodes[1].get_wallet_rpc("psbt_offline")
+
+ self.log.info("Mining blocks...")
+ gen_addr = self.boring.getnewaddress()
+ self.nodes[0].generatetoaddress(101, gen_addr)
self.do_test(
"tr(XPRV)",
@@ -276,6 +354,13 @@ class WalletTaprootTest(BitcoinTestFramework):
1
)
self.do_test(
+ "wpkh(XPRV)",
+ "wpkh($1/*)",
+ [True],
+ None,
+ 1
+ )
+ self.do_test(
"tr(XPRV,{H,{H,XPUB}})",
"tr($1/*,{pk($H),{pk($H),pk($2/*)}})",
[True, False],
@@ -283,6 +368,13 @@ class WalletTaprootTest(BitcoinTestFramework):
2
)
self.do_test(
+ "wsh(multi(1,XPRV,XPUB))",
+ "wsh(multi(1,$1/*,$2/*))",
+ [True, False],
+ None,
+ 2
+ )
+ self.do_test(
"tr(XPUB,{{H,{H,XPUB}},{H,{H,{H,XPRV}}}})",
"tr($1/*,{{pk($H),{pk($H),pk($2/*)}},{pk($H),{pk($H),{pk($H),pk($3/*)}}}})",
[False, False, True],
@@ -290,5 +382,19 @@ class WalletTaprootTest(BitcoinTestFramework):
3
)
+ self.log.info("Sending everything back...")
+
+ txid = self.rpc_online.sendtoaddress(address=self.boring.getnewaddress(), amount=self.rpc_online.getbalance(), subtractfeefromamount=True)
+ self.nodes[0].generatetoaddress(1, self.boring.getnewaddress())
+ assert(self.rpc_online.gettransaction(txid)["confirmations"] > 0)
+
+ psbt = self.psbt_online.walletcreatefundedpsbt([], [{self.boring.getnewaddress(): self.psbt_online.getbalance()}], None, {"subtractFeeFromOutputs": [0]})['psbt']
+ res = self.psbt_offline.walletprocesspsbt(psbt)
+ assert(res['complete'])
+ rawtx = self.nodes[0].finalizepsbt(res['psbt'])['hex']
+ txid = self.nodes[0].sendrawtransaction(rawtx)
+ self.nodes[0].generatetoaddress(1, self.boring.getnewaddress())
+ assert(self.psbt_online.gettransaction(txid)['confirmations'] > 0)
+
if __name__ == '__main__':
WalletTaprootTest().main()
generated by cgit v1.2.3 (git 2.26.2) at 2024-09-02 12:04:00 +0000