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Don't pass nHashType to EvalScript nor CheckSig

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This commit is contained in:
jtimon
2014-07-18 18:47:10 +02:00
committed by Pieter Wuille
parent 2b23a87599
commit 6dcfda2dc4
5 changed files with 18 additions and 21 deletions
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19
src/script/interpreter.cpp
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@@ -132,7 +132,7 @@ bool IsCanonicalSignature(const valtype &vchSig, unsigned int flags) {
return true;
}
bool EvalScript(vector<vector<unsigned char> >& stack, const CScript& script, const CTransaction& txTo, unsigned int nIn, unsigned int flags, int nHashType)
bool EvalScript(vector<vector<unsigned char> >& stack, const CScript& script, const CTransaction& txTo, unsigned int nIn, unsigned int flags)
{
CScript::const_iterator pc = script.begin();
CScript::const_iterator pend = script.end();
@@ -675,7 +675,7 @@ bool EvalScript(vector<vector<unsigned char> >& stack, const CScript& script, co
scriptCode.FindAndDelete(CScript(vchSig));
bool fSuccess = IsCanonicalSignature(vchSig, flags) && IsCanonicalPubKey(vchPubKey, flags) &&
CheckSig(vchSig, vchPubKey, scriptCode, txTo, nIn, nHashType, flags);
CheckSig(vchSig, vchPubKey, scriptCode, txTo, nIn, flags);
popstack(stack);
popstack(stack);
@@ -736,7 +736,7 @@ bool EvalScript(vector<vector<unsigned char> >& stack, const CScript& script, co
// Check signature
bool fOk = IsCanonicalSignature(vchSig, flags) && IsCanonicalPubKey(vchPubKey, flags) &&
CheckSig(vchSig, vchPubKey, scriptCode, txTo, nIn, nHashType, flags);
CheckSig(vchSig, vchPubKey, scriptCode, txTo, nIn, flags);
if (fOk) {
isig++;
@@ -975,7 +975,7 @@ public:
}
};
bool CheckSig(vector<unsigned char> vchSig, const vector<unsigned char> &vchPubKey, const CScript &scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType, int flags)
bool CheckSig(vector<unsigned char> vchSig, const vector<unsigned char>& vchPubKey, const CScript& scriptCode, const CTransaction& txTo, unsigned int nIn, int flags)
{
static CSignatureCache signatureCache;
@@ -986,10 +986,7 @@ bool CheckSig(vector<unsigned char> vchSig, const vector<unsigned char> &vchPubK
// Hash type is one byte tacked on to the end of the signature
if (vchSig.empty())
return false;
if (nHashType == 0)
nHashType = vchSig.back();
else if (nHashType != vchSig.back())
return false;
int nHashType = vchSig.back();
vchSig.pop_back();
uint256 sighash = SignatureHash(scriptCode, txTo, nIn, nHashType);
@@ -1009,11 +1006,11 @@ bool CheckSig(vector<unsigned char> vchSig, const vector<unsigned char> &vchPubK
bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, unsigned int flags)
{
vector<vector<unsigned char> > stack, stackCopy;
if (!EvalScript(stack, scriptSig, txTo, nIn, flags, 0))
if (!EvalScript(stack, scriptSig, txTo, nIn, flags))
return false;
if (flags & SCRIPT_VERIFY_P2SH)
stackCopy = stack;
if (!EvalScript(stack, scriptPubKey, txTo, nIn, flags, 0))
if (!EvalScript(stack, scriptPubKey, txTo, nIn, flags))
return false;
if (stack.empty())
return false;
@@ -1036,7 +1033,7 @@ bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const C
CScript pubKey2(pubKeySerialized.begin(), pubKeySerialized.end());
popstack(stackCopy);
if (!EvalScript(stackCopy, pubKey2, txTo, nIn, flags, 0))
if (!EvalScript(stackCopy, pubKey2, txTo, nIn, flags))
return false;
if (stackCopy.empty())
return false;