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-rw-r--r--src/bitcoin-tx.cpp2
-rw-r--r--src/rpc/rawtransaction.cpp7
-rw-r--r--src/script/sign.cpp88
-rw-r--r--src/script/sign.h9
4 files changed, 85 insertions, 21 deletions
diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index 1fc18b1e46..ab0efde05c 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -650,8 +650,6 @@ static void MutateTxSign(CMutableTransaction& tx, const std::string& flagStr)
if (!fHashSingle || (i < mergedTx.vout.size()))
ProduceSignature(keystore, MutableTransactionSignatureCreator(&mergedTx, i, amount, nHashType), prevPubKey, sigdata);
- // ... and merge in other signatures:
- sigdata = CombineSignatures(prevPubKey, MutableTransactionSignatureChecker(&mergedTx, i, amount), sigdata, DataFromTransaction(txv, i, coin.out));
UpdateInput(txin, sigdata);
}
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 550fffb326..dbe762b7a9 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -736,17 +736,15 @@ static UniValue combinerawtransaction(const JSONRPCRequest& request)
if (coin.IsSpent()) {
throw JSONRPCError(RPC_VERIFY_ERROR, "Input not found or already spent");
}
- const CScript& prevPubKey = coin.out.scriptPubKey;
- const CAmount& amount = coin.out.nValue;
-
SignatureData sigdata;
// ... and merge in other signatures:
for (const CMutableTransaction& txv : txVariants) {
if (txv.vin.size() > i) {
- sigdata = CombineSignatures(prevPubKey, TransactionSignatureChecker(&txConst, i, amount), sigdata, DataFromTransaction(txv, i, coin.out));
+ sigdata.MergeSignatureData(DataFromTransaction(txv, i, coin.out));
}
}
+ ProduceSignature(DUMMY_SIGNING_PROVIDER, MutableTransactionSignatureCreator(&mergedTx, i, coin.out.nValue, 1), coin.out.scriptPubKey, sigdata);
UpdateInput(txin, sigdata);
}
@@ -880,7 +878,6 @@ UniValue SignTransaction(CMutableTransaction& mtx, const UniValue& prevTxsUnival
if (!fHashSingle || (i < mtx.vout.size())) {
ProduceSignature(*keystore, MutableTransactionSignatureCreator(&mtx, i, amount, nHashType), prevPubKey, sigdata);
}
- sigdata = CombineSignatures(prevPubKey, TransactionSignatureChecker(&txConst, i, amount), sigdata, DataFromTransaction(mtx, i, coin.out));
UpdateInput(txin, sigdata);
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index cb63c2159e..65ba1e843d 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -33,6 +33,53 @@ bool MutableTransactionSignatureCreator::CreateSig(const SigningProvider& provid
return true;
}
+static bool GetCScript(const SigningProvider& provider, const SignatureData& sigdata, const CScriptID& scriptid, CScript& script)
+{
+ if (provider.GetCScript(scriptid, script)) {
+ return true;
+ }
+ // Look for scripts in SignatureData
+ if (CScriptID(sigdata.redeem_script) == scriptid) {
+ script = sigdata.redeem_script;
+ return true;
+ } else if (CScriptID(sigdata.witness_script) == scriptid) {
+ script = sigdata.witness_script;
+ return true;
+ }
+ return false;
+}
+
+static bool GetPubKey(const SigningProvider& provider, const SignatureData& sigdata, const CKeyID& address, CPubKey& pubkey)
+{
+ if (provider.GetPubKey(address, pubkey)) {
+ return true;
+ }
+ // Look for pubkey in all partial sigs
+ const auto it = sigdata.signatures.find(address);
+ if (it != sigdata.signatures.end()) {
+ pubkey = it->second.first;
+ return true;
+ }
+ return false;
+}
+
+static bool CreateSig(const BaseSignatureCreator& creator, SignatureData& sigdata, const SigningProvider& provider, std::vector<unsigned char>& sig_out, const CKeyID& keyid, const CScript& scriptcode, SigVersion sigversion)
+{
+ const auto it = sigdata.signatures.find(keyid);
+ if (it != sigdata.signatures.end()) {
+ sig_out = it->second.second;
+ return true;
+ }
+ if (creator.CreateSig(provider, sig_out, keyid, scriptcode, sigversion)) {
+ CPubKey pubkey;
+ GetPubKey(provider, sigdata, keyid, pubkey);
+ auto i = sigdata.signatures.emplace(keyid, SigPair(pubkey, sig_out));
+ assert(i.second);
+ 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),
@@ -40,7 +87,7 @@ bool MutableTransactionSignatureCreator::CreateSig(const SigningProvider& provid
* Returns false if scriptPubKey could not be completely satisfied.
*/
static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator& creator, const CScript& scriptPubKey,
- std::vector<valtype>& ret, txnouttype& whichTypeRet, SigVersion sigversion)
+ std::vector<valtype>& ret, txnouttype& whichTypeRet, SigVersion sigversion, SignatureData& sigdata)
{
CScript scriptRet;
uint160 h160;
@@ -58,20 +105,20 @@ static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator
case TX_WITNESS_UNKNOWN:
return false;
case TX_PUBKEY:
- if (!creator.CreateSig(provider, sig, CPubKey(vSolutions[0]).GetID(), scriptPubKey, sigversion)) return false;
+ if (!CreateSig(creator, sigdata, provider, sig, CPubKey(vSolutions[0]).GetID(), scriptPubKey, sigversion)) return false;
ret.push_back(std::move(sig));
return true;
case TX_PUBKEYHASH: {
CKeyID keyID = CKeyID(uint160(vSolutions[0]));
- if (!creator.CreateSig(provider, sig, keyID, scriptPubKey, sigversion)) return false;
+ if (!CreateSig(creator, sigdata, provider, sig, keyID, scriptPubKey, sigversion)) return false;
ret.push_back(std::move(sig));
CPubKey pubkey;
- provider.GetPubKey(keyID, pubkey);
+ GetPubKey(provider, sigdata, keyID, pubkey);
ret.push_back(ToByteVector(pubkey));
return true;
}
case TX_SCRIPTHASH:
- if (provider.GetCScript(uint160(vSolutions[0]), scriptRet)) {
+ if (GetCScript(provider, sigdata, uint160(vSolutions[0]), scriptRet)) {
ret.push_back(std::vector<unsigned char>(scriptRet.begin(), scriptRet.end()));
return true;
}
@@ -82,7 +129,7 @@ static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator
ret.push_back(valtype()); // workaround CHECKMULTISIG bug
for (size_t i = 1; i < vSolutions.size() - 1; ++i) {
CPubKey pubkey = CPubKey(vSolutions[i]);
- if (ret.size() < required + 1 && creator.CreateSig(provider, sig, pubkey.GetID(), scriptPubKey, sigversion)) {
+ if (ret.size() < required + 1 && CreateSig(creator, sigdata, provider, sig, pubkey.GetID(), scriptPubKey, sigversion)) {
ret.push_back(std::move(sig));
}
}
@@ -98,7 +145,7 @@ static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator
case TX_WITNESS_V0_SCRIPTHASH:
CRIPEMD160().Write(&vSolutions[0][0], vSolutions[0].size()).Finalize(h160.begin());
- if (provider.GetCScript(h160, scriptRet)) {
+ if (GetCScript(provider, sigdata, h160, scriptRet)) {
ret.push_back(std::vector<unsigned char>(scriptRet.begin(), scriptRet.end()));
return true;
}
@@ -130,7 +177,7 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
std::vector<valtype> result;
txnouttype whichType;
- bool solved = SignStep(provider, creator, fromPubKey, result, whichType, SigVersion::BASE);
+ bool solved = SignStep(provider, creator, fromPubKey, result, whichType, SigVersion::BASE, sigdata);
bool P2SH = false;
CScript subscript;
sigdata.scriptWitness.stack.clear();
@@ -141,7 +188,8 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
// the final scriptSig is the signatures from that
// and then the serialized subscript:
subscript = CScript(result[0].begin(), result[0].end());
- solved = solved && SignStep(provider, creator, subscript, result, whichType, SigVersion::BASE) && whichType != TX_SCRIPTHASH;
+ sigdata.redeem_script = subscript;
+ solved = solved && SignStep(provider, creator, subscript, result, whichType, SigVersion::BASE, sigdata) && whichType != TX_SCRIPTHASH;
P2SH = true;
}
@@ -150,15 +198,16 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
CScript witnessscript;
witnessscript << OP_DUP << OP_HASH160 << ToByteVector(result[0]) << OP_EQUALVERIFY << OP_CHECKSIG;
txnouttype subType;
- solved = solved && SignStep(provider, creator, witnessscript, result, subType, SigVersion::WITNESS_V0);
+ solved = solved && SignStep(provider, creator, witnessscript, result, subType, SigVersion::WITNESS_V0, sigdata);
sigdata.scriptWitness.stack = result;
result.clear();
}
else if (solved && whichType == TX_WITNESS_V0_SCRIPTHASH)
{
CScript witnessscript(result[0].begin(), result[0].end());
+ sigdata.witness_script = witnessscript;
txnouttype subType;
- solved = solved && SignStep(provider, creator, witnessscript, result, subType, SigVersion::WITNESS_V0) && subType != TX_SCRIPTHASH && subType != TX_WITNESS_V0_SCRIPTHASH && subType != TX_WITNESS_V0_KEYHASH;
+ solved = solved && SignStep(provider, creator, witnessscript, result, subType, SigVersion::WITNESS_V0, sigdata) && subType != TX_SCRIPTHASH && subType != TX_WITNESS_V0_SCRIPTHASH && subType != TX_WITNESS_V0_KEYHASH;
result.push_back(std::vector<unsigned char>(witnessscript.begin(), witnessscript.end()));
sigdata.scriptWitness.stack = result;
result.clear();
@@ -290,6 +339,22 @@ void UpdateInput(CTxIn& input, const SignatureData& data)
input.scriptWitness = data.scriptWitness;
}
+void SignatureData::MergeSignatureData(SignatureData sigdata)
+{
+ if (complete) return;
+ if (sigdata.complete) {
+ *this = std::move(sigdata);
+ return;
+ }
+ if (redeem_script.empty() && !sigdata.redeem_script.empty()) {
+ redeem_script = sigdata.redeem_script;
+ }
+ if (witness_script.empty() && !sigdata.witness_script.empty()) {
+ witness_script = sigdata.witness_script;
+ }
+ signatures.insert(std::make_move_iterator(sigdata.signatures.begin()), std::make_move_iterator(sigdata.signatures.end()));
+}
+
bool SignSignature(const SigningProvider &provider, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, const CAmount& amount, int nHashType)
{
assert(nIn < txTo.vin.size());
@@ -485,6 +550,7 @@ public:
}
const BaseSignatureCreator& DUMMY_SIGNATURE_CREATOR = DummySignatureCreator();
+const SigningProvider& DUMMY_SIGNING_PROVIDER = SigningProvider();
bool IsSolvable(const SigningProvider& provider, const CScript& script)
{
diff --git a/src/script/sign.h b/src/script/sign.h
index 7dc4bedb06..c8bccc432f 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -21,11 +21,13 @@ class SigningProvider
{
public:
virtual ~SigningProvider() {}
- virtual bool GetCScript(const CScriptID &scriptid, CScript& script) const =0;
- virtual bool GetPubKey(const CKeyID &address, CPubKey& pubkey) const =0;
- virtual bool GetKey(const CKeyID &address, CKey& key) const =0;
+ virtual bool GetCScript(const CScriptID &scriptid, CScript& script) const { return false; }
+ virtual bool GetPubKey(const CKeyID &address, CPubKey& pubkey) const { return false; }
+ virtual bool GetKey(const CKeyID &address, CKey& key) const { return false; }
};
+extern const SigningProvider& DUMMY_SIGNING_PROVIDER;
+
/** Interface for signature creators. */
class BaseSignatureCreator {
public:
@@ -68,6 +70,7 @@ struct SignatureData {
SignatureData() {}
explicit SignatureData(const CScript& script) : scriptSig(script) {}
+ void MergeSignatureData(SignatureData sigdata);
};
/** Produce a script signature using a generic signature creator. */
generated by cgit v1.2.3 (git 2.26.2) at 2024-08-21 06:10:44 +0000