Add precomputed txdata support to MutableTransactionSignatureCreator

This provides a means to pass in a PrecomputedTransactionData object to
the MutableTransactionSignatureCreator, allowing the prevout data to be
passed into the signature hashers. It is also more efficient.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/script/sign.h b/src/script/sign.h
index a1cfe1574d..7abc6d006d 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -40,9 +40,11 @@ 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;
 };