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authorPieter Wuille <pieter.wuille@gmail.com>2016-08-16 15:35:45 +0200
committerPieter Wuille <pieter.wuille@gmail.com>2016-08-16 15:35:45 +0200
commitd2c5d044d00ec805957ab246a7863d83ca075805 (patch)
tree154dd70f87cf7a91adeaa7658257c4faacf03e62 /src/script/interpreter.h
parent2c2d471e18f0601c2767cf516425b2ecfcfd2126 (diff)
Precompute sighashes
Original version by Nicolas Dorier. Precomputing version by Pieter Wuille.
Diffstat (limited to 'src/script/interpreter.h')
-rw-r--r--src/script/interpreter.h13
1 files changed, 11 insertions, 2 deletions
diff --git a/src/script/interpreter.h b/src/script/interpreter.h
index bd2f211663..b4da113eec 100644
--- a/src/script/interpreter.h
+++ b/src/script/interpreter.h
@@ -98,13 +98,20 @@ enum
bool CheckSignatureEncoding(const std::vector<unsigned char> &vchSig, unsigned int flags, ScriptError* serror);
+struct CachedHashes
+{
+ uint256 hashPrevouts, hashSequence, hashOutputs;
+
+ CachedHashes(const CTransaction& tx);
+};
+
enum SigVersion
{
SIGVERSION_BASE = 0,
SIGVERSION_WITNESS_V0 = 1,
};
-uint256 SignatureHash(const CScript &scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType, const CAmount& amount, SigVersion sigversion);
+uint256 SignatureHash(const CScript &scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType, const CAmount& amount, SigVersion sigversion, const CachedHashes* cache = NULL);
class BaseSignatureChecker
{
@@ -133,12 +140,14 @@ private:
const CTransaction* txTo;
unsigned int nIn;
const CAmount amount;
+ const CachedHashes* cachedHashes;
protected:
virtual bool VerifySignature(const std::vector<unsigned char>& vchSig, const CPubKey& vchPubKey, const uint256& sighash) const;
public:
- TransactionSignatureChecker(const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn) : txTo(txToIn), nIn(nInIn), amount(amountIn) {}
+ TransactionSignatureChecker(const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn) : txTo(txToIn), nIn(nInIn), amount(amountIn), cachedHashes(NULL) {}
+ TransactionSignatureChecker(const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, const CachedHashes& cachedHashesIn) : txTo(txToIn), nIn(nInIn), amount(amountIn), cachedHashes(&cachedHashesIn) {}
bool CheckSig(const std::vector<unsigned char>& scriptSig, const std::vector<unsigned char>& vchPubKey, const CScript& scriptCode, SigVersion sigversion) const;
bool CheckLockTime(const CScriptNum& nLockTime) const;
bool CheckSequence(const CScriptNum& nSequence) const;