aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--src/script/sign.cpp140
-rw-r--r--src/script/sign.h3
-rw-r--r--src/test/script_tests.cpp86
-rw-r--r--src/test/transaction_tests.cpp17
4 files changed, 63 insertions, 183 deletions
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index 65ba1e843d..60a8a2655d 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -377,146 +377,6 @@ bool SignSignature(const SigningProvider &provider, const CTransaction& txFrom,
return SignSignature(provider, txout.scriptPubKey, txTo, nIn, txout.nValue, nHashType);
}
-static std::vector<valtype> CombineMultisig(const CScript& scriptPubKey, const BaseSignatureChecker& checker,
- const std::vector<valtype>& vSolutions,
- const std::vector<valtype>& sigs1, const std::vector<valtype>& sigs2, SigVersion sigversion)
-{
- // Combine all the signatures we've got:
- std::set<valtype> allsigs;
- for (const valtype& v : sigs1)
- {
- if (!v.empty())
- allsigs.insert(v);
- }
- for (const valtype& v : sigs2)
- {
- if (!v.empty())
- allsigs.insert(v);
- }
-
- // Build a map of pubkey -> signature by matching sigs to pubkeys:
- assert(vSolutions.size() > 1);
- unsigned int nSigsRequired = vSolutions.front()[0];
- unsigned int nPubKeys = vSolutions.size()-2;
- std::map<valtype, valtype> sigs;
- for (const valtype& sig : allsigs)
- {
- for (unsigned int i = 0; i < nPubKeys; i++)
- {
- const valtype& pubkey = vSolutions[i+1];
- if (sigs.count(pubkey))
- continue; // Already got a sig for this pubkey
-
- if (checker.CheckSig(sig, pubkey, scriptPubKey, sigversion))
- {
- sigs[pubkey] = sig;
- break;
- }
- }
- }
- // Now build a merged CScript:
- unsigned int nSigsHave = 0;
- std::vector<valtype> result; result.push_back(valtype()); // pop-one-too-many workaround
- for (unsigned int i = 0; i < nPubKeys && nSigsHave < nSigsRequired; i++)
- {
- if (sigs.count(vSolutions[i+1]))
- {
- result.push_back(sigs[vSolutions[i+1]]);
- ++nSigsHave;
- }
- }
- // Fill any missing with OP_0:
- for (unsigned int i = nSigsHave; i < nSigsRequired; i++)
- result.push_back(valtype());
-
- return result;
-}
-
-static Stacks CombineSignatures(const CScript& scriptPubKey, const BaseSignatureChecker& checker,
- const txnouttype txType, const std::vector<valtype>& vSolutions,
- Stacks sigs1, Stacks sigs2, SigVersion sigversion)
-{
- switch (txType)
- {
- case TX_NONSTANDARD:
- case TX_NULL_DATA:
- case TX_WITNESS_UNKNOWN:
- // Don't know anything about this, assume bigger one is correct:
- if (sigs1.script.size() >= sigs2.script.size())
- return sigs1;
- return sigs2;
- case TX_PUBKEY:
- case TX_PUBKEYHASH:
- // Signatures are bigger than placeholders or empty scripts:
- if (sigs1.script.empty() || sigs1.script[0].empty())
- return sigs2;
- return sigs1;
- case TX_WITNESS_V0_KEYHASH:
- // Signatures are bigger than placeholders or empty scripts:
- if (sigs1.witness.empty() || sigs1.witness[0].empty())
- return sigs2;
- return sigs1;
- case TX_SCRIPTHASH:
- if (sigs1.script.empty() || sigs1.script.back().empty())
- return sigs2;
- else if (sigs2.script.empty() || sigs2.script.back().empty())
- return sigs1;
- else
- {
- // Recur to combine:
- valtype spk = sigs1.script.back();
- CScript pubKey2(spk.begin(), spk.end());
-
- txnouttype txType2;
- std::vector<std::vector<unsigned char> > vSolutions2;
- Solver(pubKey2, txType2, vSolutions2);
- sigs1.script.pop_back();
- sigs2.script.pop_back();
- Stacks result = CombineSignatures(pubKey2, checker, txType2, vSolutions2, sigs1, sigs2, sigversion);
- result.script.push_back(spk);
- return result;
- }
- case TX_MULTISIG:
- return Stacks(CombineMultisig(scriptPubKey, checker, vSolutions, sigs1.script, sigs2.script, sigversion));
- case TX_WITNESS_V0_SCRIPTHASH:
- if (sigs1.witness.empty() || sigs1.witness.back().empty())
- return sigs2;
- else if (sigs2.witness.empty() || sigs2.witness.back().empty())
- return sigs1;
- else
- {
- // Recur to combine:
- CScript pubKey2(sigs1.witness.back().begin(), sigs1.witness.back().end());
- txnouttype txType2;
- std::vector<valtype> vSolutions2;
- Solver(pubKey2, txType2, vSolutions2);
- sigs1.witness.pop_back();
- sigs1.script = sigs1.witness;
- sigs1.witness.clear();
- sigs2.witness.pop_back();
- sigs2.script = sigs2.witness;
- sigs2.witness.clear();
- Stacks result = CombineSignatures(pubKey2, checker, txType2, vSolutions2, sigs1, sigs2, SigVersion::WITNESS_V0);
- result.witness = result.script;
- result.script.clear();
- result.witness.push_back(valtype(pubKey2.begin(), pubKey2.end()));
- return result;
- }
- default:
- return Stacks();
- }
-}
-
-SignatureData CombineSignatures(const CScript& scriptPubKey, const BaseSignatureChecker& checker,
- const SignatureData& scriptSig1, const SignatureData& scriptSig2)
-{
- txnouttype txType;
- std::vector<std::vector<unsigned char> > vSolutions;
- Solver(scriptPubKey, txType, vSolutions);
-
- return CombineSignatures(scriptPubKey, checker, txType, vSolutions, Stacks(scriptSig1), Stacks(scriptSig2), SigVersion::BASE).Output();
-}
-
namespace {
/** Dummy signature checker which accepts all signatures. */
class DummySignatureChecker final : public BaseSignatureChecker
diff --git a/src/script/sign.h b/src/script/sign.h
index c8bccc432f..3666859641 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -80,9 +80,6 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
bool SignSignature(const SigningProvider &provider, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, const CAmount& amount, int nHashType);
bool SignSignature(const SigningProvider &provider, const CTransaction& txFrom, CMutableTransaction& txTo, unsigned int nIn, int nHashType);
-/** Combine two script signatures using a generic signature checker, intelligently, possibly with OP_0 placeholders. */
-SignatureData CombineSignatures(const CScript& scriptPubKey, const BaseSignatureChecker& checker, const SignatureData& scriptSig1, const SignatureData& scriptSig2);
-
/** Extract signature data from a transaction input, and insert it. */
SignatureData DataFromTransaction(const CMutableTransaction& tx, unsigned int nIn, const CTxOut& txout);
void UpdateInput(CTxIn& input, const SignatureData& data);
diff --git a/src/test/script_tests.cpp b/src/test/script_tests.cpp
index c05e60996d..c7cdd7ca82 100644
--- a/src/test/script_tests.cpp
+++ b/src/test/script_tests.cpp
@@ -1161,10 +1161,19 @@ BOOST_AUTO_TEST_CASE(script_CHECKMULTISIG23)
BOOST_CHECK_MESSAGE(err == SCRIPT_ERR_INVALID_STACK_OPERATION, ScriptErrorString(err));
}
+/* Wrapper around ProduceSignature to combine two scriptsigs */
+SignatureData CombineSignatures(const CTxOut& txout, const CMutableTransaction& tx, const SignatureData& scriptSig1, const SignatureData& scriptSig2)
+{
+ SignatureData data;
+ data.MergeSignatureData(scriptSig1);
+ data.MergeSignatureData(scriptSig2);
+ ProduceSignature(DUMMY_SIGNING_PROVIDER, MutableTransactionSignatureCreator(&tx, 0, txout.nValue), txout.scriptPubKey, data);
+ return data;
+}
+
BOOST_AUTO_TEST_CASE(script_combineSigs)
{
- // Test the CombineSignatures function
- CAmount amount = 0;
+ // Test the ProduceSignature's ability to combine signatures function
CBasicKeyStore keystore;
std::vector<CKey> keys;
std::vector<CPubKey> pubkeys;
@@ -1180,52 +1189,51 @@ BOOST_AUTO_TEST_CASE(script_combineSigs)
CMutableTransaction txFrom = BuildCreditingTransaction(GetScriptForDestination(keys[0].GetPubKey().GetID()));
CMutableTransaction txTo = BuildSpendingTransaction(CScript(), CScriptWitness(), txFrom);
CScript& scriptPubKey = txFrom.vout[0].scriptPubKey;
- CScript& scriptSig = txTo.vin[0].scriptSig;
+ SignatureData scriptSig;
SignatureData empty;
- SignatureData combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), empty, empty);
+ SignatureData combined = CombineSignatures(txFrom.vout[0], txTo, empty, empty);
BOOST_CHECK(combined.scriptSig.empty());
// Single signature case:
SignSignature(keystore, txFrom, txTo, 0, SIGHASH_ALL); // changes scriptSig
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(scriptSig), empty);
- BOOST_CHECK(combined.scriptSig == scriptSig);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), empty, SignatureData(scriptSig));
- BOOST_CHECK(combined.scriptSig == scriptSig);
- CScript scriptSigCopy = scriptSig;
+ scriptSig = DataFromTransaction(txTo, 0, txFrom.vout[0]);
+ combined = CombineSignatures(txFrom.vout[0], txTo, scriptSig, empty);
+ BOOST_CHECK(combined.scriptSig == scriptSig.scriptSig);
+ combined = CombineSignatures(txFrom.vout[0], txTo, empty, scriptSig);
+ BOOST_CHECK(combined.scriptSig == scriptSig.scriptSig);
+ SignatureData scriptSigCopy = scriptSig;
// Signing again will give a different, valid signature:
SignSignature(keystore, txFrom, txTo, 0, SIGHASH_ALL);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(scriptSigCopy), SignatureData(scriptSig));
- BOOST_CHECK(combined.scriptSig == scriptSigCopy || combined.scriptSig == scriptSig);
+ scriptSig = DataFromTransaction(txTo, 0, txFrom.vout[0]);
+ combined = CombineSignatures(txFrom.vout[0], txTo, scriptSigCopy, scriptSig);
+ BOOST_CHECK(combined.scriptSig == scriptSigCopy.scriptSig || combined.scriptSig == scriptSig.scriptSig);
// P2SH, single-signature case:
CScript pkSingle; pkSingle << ToByteVector(keys[0].GetPubKey()) << OP_CHECKSIG;
keystore.AddCScript(pkSingle);
scriptPubKey = GetScriptForDestination(CScriptID(pkSingle));
SignSignature(keystore, txFrom, txTo, 0, SIGHASH_ALL);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(scriptSig), empty);
- BOOST_CHECK(combined.scriptSig == scriptSig);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), empty, SignatureData(scriptSig));
- BOOST_CHECK(combined.scriptSig == scriptSig);
+ scriptSig = DataFromTransaction(txTo, 0, txFrom.vout[0]);
+ combined = CombineSignatures(txFrom.vout[0], txTo, scriptSig, empty);
+ BOOST_CHECK(combined.scriptSig == scriptSig.scriptSig);
+ combined = CombineSignatures(txFrom.vout[0], txTo, empty, scriptSig);
+ BOOST_CHECK(combined.scriptSig == scriptSig.scriptSig);
scriptSigCopy = scriptSig;
SignSignature(keystore, txFrom, txTo, 0, SIGHASH_ALL);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(scriptSigCopy), SignatureData(scriptSig));
- BOOST_CHECK(combined.scriptSig == scriptSigCopy || combined.scriptSig == scriptSig);
- // dummy scriptSigCopy with placeholder, should always choose non-placeholder:
- scriptSigCopy = CScript() << OP_0 << std::vector<unsigned char>(pkSingle.begin(), pkSingle.end());
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(scriptSigCopy), SignatureData(scriptSig));
- BOOST_CHECK(combined.scriptSig == scriptSig);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(scriptSig), SignatureData(scriptSigCopy));
- BOOST_CHECK(combined.scriptSig == scriptSig);
+ scriptSig = DataFromTransaction(txTo, 0, txFrom.vout[0]);
+ combined = CombineSignatures(txFrom.vout[0], txTo, scriptSigCopy, scriptSig);
+ BOOST_CHECK(combined.scriptSig == scriptSigCopy.scriptSig || combined.scriptSig == scriptSig.scriptSig);
// Hardest case: Multisig 2-of-3
scriptPubKey = GetScriptForMultisig(2, pubkeys);
keystore.AddCScript(scriptPubKey);
SignSignature(keystore, txFrom, txTo, 0, SIGHASH_ALL);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(scriptSig), empty);
- BOOST_CHECK(combined.scriptSig == scriptSig);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), empty, SignatureData(scriptSig));
- BOOST_CHECK(combined.scriptSig == scriptSig);
+ scriptSig = DataFromTransaction(txTo, 0, txFrom.vout[0]);
+ combined = CombineSignatures(txFrom.vout[0], txTo, scriptSig, empty);
+ BOOST_CHECK(combined.scriptSig == scriptSig.scriptSig);
+ combined = CombineSignatures(txFrom.vout[0], txTo, empty, scriptSig);
+ BOOST_CHECK(combined.scriptSig == scriptSig.scriptSig);
// A couple of partially-signed versions:
std::vector<unsigned char> sig1;
@@ -1252,22 +1260,28 @@ BOOST_AUTO_TEST_CASE(script_combineSigs)
CScript complete12 = CScript() << OP_0 << sig1 << sig2;
CScript complete13 = CScript() << OP_0 << sig1 << sig3;
CScript complete23 = CScript() << OP_0 << sig2 << sig3;
-
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(partial1a), SignatureData(partial1b));
+ SignatureData partial1_sigs;
+ partial1_sigs.signatures.emplace(keys[0].GetPubKey().GetID(), SigPair(keys[0].GetPubKey(), sig1));
+ SignatureData partial2_sigs;
+ partial2_sigs.signatures.emplace(keys[1].GetPubKey().GetID(), SigPair(keys[1].GetPubKey(), sig2));
+ SignatureData partial3_sigs;
+ partial3_sigs.signatures.emplace(keys[2].GetPubKey().GetID(), SigPair(keys[2].GetPubKey(), sig3));
+
+ combined = CombineSignatures(txFrom.vout[0], txTo, partial1_sigs, partial1_sigs);
BOOST_CHECK(combined.scriptSig == partial1a);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(partial1a), SignatureData(partial2a));
+ combined = CombineSignatures(txFrom.vout[0], txTo, partial1_sigs, partial2_sigs);
BOOST_CHECK(combined.scriptSig == complete12);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(partial2a), SignatureData(partial1a));
+ combined = CombineSignatures(txFrom.vout[0], txTo, partial2_sigs, partial1_sigs);
BOOST_CHECK(combined.scriptSig == complete12);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(partial1b), SignatureData(partial2b));
+ combined = CombineSignatures(txFrom.vout[0], txTo, partial1_sigs, partial2_sigs);
BOOST_CHECK(combined.scriptSig == complete12);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(partial3b), SignatureData(partial1b));
+ combined = CombineSignatures(txFrom.vout[0], txTo, partial3_sigs, partial1_sigs);
BOOST_CHECK(combined.scriptSig == complete13);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(partial2a), SignatureData(partial3a));
+ combined = CombineSignatures(txFrom.vout[0], txTo, partial2_sigs, partial3_sigs);
BOOST_CHECK(combined.scriptSig == complete23);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(partial3b), SignatureData(partial2b));
+ combined = CombineSignatures(txFrom.vout[0], txTo, partial3_sigs, partial2_sigs);
BOOST_CHECK(combined.scriptSig == complete23);
- combined = CombineSignatures(scriptPubKey, MutableTransactionSignatureChecker(&txTo, 0, amount), SignatureData(partial3b), SignatureData(partial3a));
+ combined = CombineSignatures(txFrom.vout[0], txTo, partial3_sigs, partial3_sigs);
BOOST_CHECK(combined.scriptSig == partial3c);
}
diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp
index 9ec3fd35f0..45dc0e3571 100644
--- a/src/test/transaction_tests.cpp
+++ b/src/test/transaction_tests.cpp
@@ -494,6 +494,15 @@ BOOST_AUTO_TEST_CASE(test_big_witness_transaction) {
threadGroup.join_all();
}
+SignatureData CombineSignatures(const CMutableTransaction& input1, const CMutableTransaction& input2, const CTransactionRef tx)
+{
+ SignatureData sigdata;
+ sigdata = DataFromTransaction(input1, 0, tx->vout[0]);
+ sigdata.MergeSignatureData(DataFromTransaction(input2, 0, tx->vout[0]));
+ ProduceSignature(DUMMY_SIGNING_PROVIDER, MutableTransactionSignatureCreator(&input1, 0, tx->vout[0].nValue), tx->vout[0].scriptPubKey, sigdata);
+ return sigdata;
+}
+
BOOST_AUTO_TEST_CASE(test_witness)
{
CBasicKeyStore keystore, keystore2;
@@ -629,7 +638,7 @@ BOOST_AUTO_TEST_CASE(test_witness)
CreateCreditAndSpend(keystore2, scriptMulti, output2, input2, false);
CheckWithFlag(output2, input2, 0, false);
BOOST_CHECK(*output1 == *output2);
- UpdateInput(input1.vin[0], CombineSignatures(output1->vout[0].scriptPubKey, MutableTransactionSignatureChecker(&input1, 0, output1->vout[0].nValue), DataFromTransaction(input1, 0, output1->vout[0]), DataFromTransaction(input2, 0, output1->vout[0])));
+ UpdateInput(input1.vin[0], CombineSignatures(input1, input2, output1));
CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
// P2SH 2-of-2 multisig
@@ -640,7 +649,7 @@ BOOST_AUTO_TEST_CASE(test_witness)
CheckWithFlag(output2, input2, 0, true);
CheckWithFlag(output2, input2, SCRIPT_VERIFY_P2SH, false);
BOOST_CHECK(*output1 == *output2);
- UpdateInput(input1.vin[0], CombineSignatures(output1->vout[0].scriptPubKey, MutableTransactionSignatureChecker(&input1, 0, output1->vout[0].nValue), DataFromTransaction(input1, 0, output1->vout[0]), DataFromTransaction(input2, 0, output1->vout[0])));
+ UpdateInput(input1.vin[0], CombineSignatures(input1, input2, output1));
CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
@@ -652,7 +661,7 @@ BOOST_AUTO_TEST_CASE(test_witness)
CheckWithFlag(output2, input2, 0, true);
CheckWithFlag(output2, input2, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, false);
BOOST_CHECK(*output1 == *output2);
- UpdateInput(input1.vin[0], CombineSignatures(output1->vout[0].scriptPubKey, MutableTransactionSignatureChecker(&input1, 0, output1->vout[0].nValue), DataFromTransaction(input1, 0, output1->vout[0]), DataFromTransaction(input2, 0, output1->vout[0])));
+ UpdateInput(input1.vin[0], CombineSignatures(input1, input2, output1));
CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, true);
CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
@@ -664,7 +673,7 @@ BOOST_AUTO_TEST_CASE(test_witness)
CheckWithFlag(output2, input2, SCRIPT_VERIFY_P2SH, true);
CheckWithFlag(output2, input2, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, false);
BOOST_CHECK(*output1 == *output2);
- UpdateInput(input1.vin[0], CombineSignatures(output1->vout[0].scriptPubKey, MutableTransactionSignatureChecker(&input1, 0, output1->vout[0].nValue), DataFromTransaction(input1, 0, output1->vout[0]), DataFromTransaction(input2, 0, output1->vout[0])));
+ UpdateInput(input1.vin[0], CombineSignatures(input1, input2, output1));
CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, true);
CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-05 11:02:51 +0000