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Precompute sighashes

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Original version by Nicolas Dorier. Precomputing version by Pieter Wuille.

Edited for Zcash by Ariel Gabizon and Jack Grigg
This commit is contained in:
Pieter Wuille
2018-01-01 13:27:59 +02:00
committed by Jack Grigg
parent 722d811f89
commit f762d44973
10 changed files with 84 additions and 38 deletions
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9
src/main.h
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@@ -45,6 +45,7 @@ class CInv;
class CScriptCheck;
class CValidationInterface;
class CValidationState;
class CachedHashes;
struct CNodeStateStats;
@@ -330,7 +331,7 @@ unsigned int GetP2SHSigOpCount(const CTransaction& tx, const CCoinsViewCache& ma
* instead of being performed inline.
*/
bool ContextualCheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsViewCache &view, bool fScriptChecks,
unsigned int flags, bool cacheStore, const Consensus::Params& consensusParams,
unsigned int flags, bool cacheStore, CachedHashes& cachedHashes, const Consensus::Params& consensusParams,
std::vector<CScriptCheck> *pvChecks = NULL);
/** Check a transaction contextually against a set of consensus rules */
@@ -390,12 +391,13 @@ private:
unsigned int nFlags;
bool cacheStore;
ScriptError error;
CachedHashes *cachedHashes;
public:
CScriptCheck(): amount(0), ptxTo(0), nIn(0), nFlags(0), cacheStore(false), error(SCRIPT_ERR_UNKNOWN_ERROR) {}
CScriptCheck(const CCoins& txFromIn, const CTransaction& txToIn, unsigned int nInIn, unsigned int nFlagsIn, bool cacheIn) :
CScriptCheck(const CCoins& txFromIn, const CTransaction& txToIn, unsigned int nInIn, unsigned int nFlagsIn, bool cacheIn, CachedHashes* cachedHashesIn) :
scriptPubKey(txFromIn.vout[txToIn.vin[nInIn].prevout.n].scriptPubKey), amount(txFromIn.vout[txToIn.vin[nInIn].prevout.n].nValue),
ptxTo(&txToIn), nIn(nInIn), nFlags(nFlagsIn), cacheStore(cacheIn), error(SCRIPT_ERR_UNKNOWN_ERROR) { }
ptxTo(&txToIn), nIn(nInIn), nFlags(nFlagsIn), cacheStore(cacheIn), error(SCRIPT_ERR_UNKNOWN_ERROR), cachedHashes(cachedHashesIn) { }
bool operator()();
@@ -407,6 +409,7 @@ public:
std::swap(nFlags, check.nFlags);
std::swap(cacheStore, check.cacheStore);
std::swap(error, check.error);
std::swap(cachedHashes, check.cachedHashes);
}
ScriptError GetScriptError() const { return error; }