Move VerifySignature to main

[novacoin.git] / src / main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index bf8bc4b..4b7a1c1 100644 (file)
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1458,6 +1458,20 @@ unsigned int CTransaction::GetP2SHSigOpCount(const MapPrevTx& inputs) const
     return nSigOps;
 }
 
+bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, unsigned int flags, int nHashType)
+{
+    assert(nIn < txTo.vin.size());
+    const CTxIn& txin = txTo.vin[nIn];
+    if (txin.prevout.n >= txFrom.vout.size())
+        return false;
+    const CTxOut& txout = txFrom.vout[txin.prevout.n];
+
+    if (txin.prevout.hash != txFrom.GetHash())
+        return false;
+
+    return VerifyScript(txin.scriptSig, txout.scriptPubKey, txTo, nIn, flags, nHashType);
+}
+
 bool CTransaction::ConnectInputs(CTxDB& txdb, MapPrevTx inputs, map<uint256, CTxIndex>& mapTestPool, const CDiskTxPos& posThisTx,
     const CBlockIndex* pindexBlock, bool fBlock, bool fMiner, unsigned int flags)
 {