interpreter.cpp File Reference

#include "interpreter.h"
#include "primitives/transaction.h"
#include "crypto/ripemd160.h"
#include "crypto/sha1.h"
#include "crypto/sha256.h"
#include "pubkey.h"
#include "script/script.h"
#include "uint256.h"

Go to the source code of this file.

Macros
#define	stacktop(i)   (stack.at(stack.size()+(i)))
#define	altstacktop(i)   (altstack.at(altstack.size()+(i)))

Typedefs
typedef vector< unsigned char >	valtype

Functions
bool	CastToBool (const valtype &vch)
static void	popstack (vector< valtype > &stack)
static bool	IsCompressedOrUncompressedPubKey (const valtype &vchPubKey)
static bool	IsValidSignatureEncoding (const std::vector< unsigned char > &sig)
static bool	IsLowDERSignature (const valtype &vchSig, ScriptError *serror)
static bool	IsDefinedHashtypeSignature (const valtype &vchSig)
bool	CheckSignatureEncoding (const vector< unsigned char > &vchSig, unsigned int flags, ScriptError *serror)
static bool	CheckPubKeyEncoding (const valtype &vchSig, unsigned int flags, ScriptError *serror)
static bool	CheckMinimalPush (const valtype &data, opcodetype opcode)
bool	EvalScript (vector< vector< unsigned char > > &stack, const CScript &script, unsigned int flags, const BaseSignatureChecker &checker, ScriptError *serror)
uint256	SignatureHash (const CScript &scriptCode, const CTransaction &txTo, unsigned int nIn, int nHashType)
bool	VerifyScript (const CScript &scriptSig, const CScript &scriptPubKey, unsigned int flags, const BaseSignatureChecker &checker, ScriptError *serror)

Macro Definition Documentation

altstacktop

#define altstacktop

(

i

)

(altstack.at(altstack.size()+(i)))

Definition at line 58 of file interpreter.cpp.

Referenced by EvalScript().

stacktop

#define stacktop

(

i

)

(stack.at(stack.size()+(i)))

Script is a stack machine (like Forth) that evaluates a predicate returning a bool indicating valid or not. There are no loops.

Definition at line 57 of file interpreter.cpp.

Referenced by EvalScript().

Typedef Documentation

valtype

typedef vector<unsigned char> valtype

Definition at line 18 of file interpreter.cpp.

Function Documentation

CastToBool()

bool CastToBool

(

const valtype &

vch

)

Definition at line 38 of file interpreter.cpp.

Referenced by EvalScript(), and VerifyScript().

CheckMinimalPush()

static bool CheckMinimalPush ( const valtype &  data, opcodetype  opcode  )

static

Definition at line 209 of file interpreter.cpp.

Referenced by EvalScript().

CheckPubKeyEncoding()

static bool CheckPubKeyEncoding ( const valtype &  vchSig, unsigned int  flags, ScriptError *  serror  )

static

Definition at line 202 of file interpreter.cpp.

Referenced by EvalScript().

CheckSignatureEncoding()

bool CheckSignatureEncoding	(	const vector< unsigned char > &	vchSig,
		unsigned int	flags,
		ScriptError *	serror
	)

Definition at line 185 of file interpreter.cpp.

Referenced by EvalScript(), and ScriptToAsmStr().

EvalScript()

bool EvalScript	(	vector< vector< unsigned char > > &	stack,
		const CScript &	script,
		unsigned int	flags,
		const BaseSignatureChecker &	checker,
		ScriptError *	serror
	)

Definition at line 232 of file interpreter.cpp.

Referenced by AreInputsStandard(), CombineSignatures(), and VerifyScript().

IsCompressedOrUncompressedPubKey()

static bool IsCompressedOrUncompressedPubKey ( const valtype &  vchPubKey )

static

Definition at line 66 of file interpreter.cpp.

Referenced by CheckPubKeyEncoding().

IsDefinedHashtypeSignature()

static bool IsDefinedHashtypeSignature ( const valtype &  vchSig )

static

Definition at line 174 of file interpreter.cpp.

Referenced by CheckSignatureEncoding().

IsLowDERSignature()

static bool IsLowDERSignature ( const valtype &  vchSig, ScriptError *  serror  )

static

Definition at line 163 of file interpreter.cpp.

Referenced by CheckSignatureEncoding().

IsValidSignatureEncoding()

static bool IsValidSignatureEncoding ( const std::vector< unsigned char > &  sig )

static

A canonical signature exists of: <30> <total len>=""> <02> <len r>=""> <R> <02> <len s>=""> <S> <hashtype> Where R and S are not negative (their first byte has its highest bit not set), and not excessively padded (do not start with a 0 byte, unless an otherwise negative number follows, in which case a single 0 byte is necessary and even required).

See https://bitcointalk.org/index.php?topic=8392.msg127623#msg127623

This function is consensus-critical since BIP66.

Definition at line 98 of file interpreter.cpp.

Referenced by CheckSignatureEncoding(), and IsLowDERSignature().

popstack()

static void popstack ( vector< valtype > &  stack )

inlinestatic

Definition at line 59 of file interpreter.cpp.

Referenced by EvalScript(), and VerifyScript().

SignatureHash()

uint256 SignatureHash	(	const CScript &	scriptCode,
		const CTransaction &	txTo,
		unsigned int	nIn,
		int	nHashType
	)

Definition at line 1109 of file interpreter.cpp.

Referenced by TransactionSignatureChecker::CheckSig().

VerifyScript()

bool VerifyScript	(	const CScript &	scriptSig,
		const CScript &	scriptPubKey,
		unsigned int	flags,
		const BaseSignatureChecker &	checker,
		ScriptError *	serror
	)

Definition at line 1242 of file interpreter.cpp.

Referenced by dashconsensus_verify_script(), CPrivateSendServer::IsInputScriptSigValid(), MutateTxSign(), CScriptCheck::operator()(), ProduceSignature(), and signrawtransaction().