#include "key.h"
#include "util.h"
#include <stdexcept>
#include <stdint.h>
#include <string>
#include <vector>
#include <boost/foreach.hpp>
#include <boost/variant.hpp>

Include dependency graph for script.h:

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Classes
class	scriptnum_error

class	CScriptNum

class	CNoDestination

class	CScript
	Serialized script, used inside transaction inputs and outputs. More...

class	CScriptCompressor
	Compact serializer for scripts. More...

Typedefs
typedef boost::variant< CNoDestination, CKeyID, CScriptID >	CTxDestination
	A txout script template with a specific destination. More...

Enumerations
enum	{ SIGHASH_ALL = 1, SIGHASH_NONE = 2, SIGHASH_SINGLE = 3, SIGHASH_ANYONECANPAY = 0x80 }
	Signature hash types/flags. More...

enum	{ SCRIPT_VERIFY_NONE = 0, SCRIPT_VERIFY_P2SH = (1U << 0), SCRIPT_VERIFY_STRICTENC = (1U << 1), SCRIPT_VERIFY_EVEN_S = (1U << 2), SCRIPT_VERIFY_NOCACHE = (1U << 3) }
	Script verification flags. More...

enum	txnouttype { TX_NONSTANDARD, TX_PUBKEY, TX_PUBKEYHASH, TX_SCRIPTHASH, TX_MULTISIG, TX_NULL_DATA }

enum	opcodetype { OP_0 = 0x00, OP_FALSE = OP_0, OP_PUSHDATA1 = 0x4c, OP_PUSHDATA2 = 0x4d, OP_PUSHDATA4 = 0x4e, OP_1NEGATE = 0x4f, OP_RESERVED = 0x50, OP_1 = 0x51, OP_TRUE =OP_1, OP_2 = 0x52, OP_3 = 0x53, OP_4 = 0x54, OP_5 = 0x55, OP_6 = 0x56, OP_7 = 0x57, OP_8 = 0x58, OP_9 = 0x59, OP_10 = 0x5a, OP_11 = 0x5b, OP_12 = 0x5c, OP_13 = 0x5d, OP_14 = 0x5e, OP_15 = 0x5f, OP_16 = 0x60, OP_NOP = 0x61, OP_VER = 0x62, OP_IF = 0x63, OP_NOTIF = 0x64, OP_VERIF = 0x65, OP_VERNOTIF = 0x66, OP_ELSE = 0x67, OP_ENDIF = 0x68, OP_VERIFY = 0x69, OP_RETURN = 0x6a, OP_TOALTSTACK = 0x6b, OP_FROMALTSTACK = 0x6c, OP_2DROP = 0x6d, OP_2DUP = 0x6e, OP_3DUP = 0x6f, OP_2OVER = 0x70, OP_2ROT = 0x71, OP_2SWAP = 0x72, OP_IFDUP = 0x73, OP_DEPTH = 0x74, OP_DROP = 0x75, OP_DUP = 0x76, OP_NIP = 0x77, OP_OVER = 0x78, OP_PICK = 0x79, OP_ROLL = 0x7a, OP_ROT = 0x7b, OP_SWAP = 0x7c, OP_TUCK = 0x7d, OP_CAT = 0x7e, OP_SUBSTR = 0x7f, OP_LEFT = 0x80, OP_RIGHT = 0x81, OP_SIZE = 0x82, OP_INVERT = 0x83, OP_AND = 0x84, OP_OR = 0x85, OP_XOR = 0x86, OP_EQUAL = 0x87, OP_EQUALVERIFY = 0x88, OP_RESERVED1 = 0x89, OP_RESERVED2 = 0x8a, OP_1ADD = 0x8b, OP_1SUB = 0x8c, OP_2MUL = 0x8d, OP_2DIV = 0x8e, OP_NEGATE = 0x8f, OP_ABS = 0x90, OP_NOT = 0x91, OP_0NOTEQUAL = 0x92, OP_ADD = 0x93, OP_SUB = 0x94, OP_MUL = 0x95, OP_DIV = 0x96, OP_MOD = 0x97, OP_LSHIFT = 0x98, OP_RSHIFT = 0x99, OP_BOOLAND = 0x9a, OP_BOOLOR = 0x9b, OP_NUMEQUAL = 0x9c, OP_NUMEQUALVERIFY = 0x9d, OP_NUMNOTEQUAL = 0x9e, OP_LESSTHAN = 0x9f, OP_GREATERTHAN = 0xa0, OP_LESSTHANOREQUAL = 0xa1, OP_GREATERTHANOREQUAL = 0xa2, OP_MIN = 0xa3, OP_MAX = 0xa4, OP_WITHIN = 0xa5, OP_RIPEMD160 = 0xa6, OP_SHA1 = 0xa7, OP_SHA256 = 0xa8, OP_HASH160 = 0xa9, OP_HASH256 = 0xaa, OP_CODESEPARATOR = 0xab, OP_CHECKSIG = 0xac, OP_CHECKSIGVERIFY = 0xad, OP_CHECKMULTISIG = 0xae, OP_CHECKMULTISIGVERIFY = 0xaf, OP_NOP1 = 0xb0, OP_NOP2 = 0xb1, OP_NOP3 = 0xb2, OP_NOP4 = 0xb3, OP_NOP5 = 0xb4, OP_NOP6 = 0xb5, OP_NOP7 = 0xb6, OP_NOP8 = 0xb7, OP_NOP9 = 0xb8, OP_NOP10 = 0xb9, OP_SMALLDATA = 0xf9, OP_SMALLINTEGER = 0xfa, OP_PUBKEYS = 0xfb, OP_PUBKEYHASH = 0xfd, OP_PUBKEY = 0xfe, OP_INVALIDOPCODE = 0xff }
	Script opcodes. More...

Functions
const char *	GetTxnOutputType (txnouttype t)

const char *	GetOpName (opcodetype opcode)

std::string	ValueString (const std::vector< unsigned char > &vch)

std::string	StackString (const std::vector< std::vector< unsigned char > > &vStack)

bool	IsCanonicalPubKey (const std::vector< unsigned char > &vchPubKey, unsigned int flags)

bool	IsCanonicalSignature (const std::vector< unsigned char > &vchSig, unsigned int flags)

bool	EvalScript (std::vector< std::vector< unsigned char > > &stack, const CScript &script, const CTransaction &txTo, unsigned int nIn, unsigned int flags, int nHashType)

bool	Solver (const CScript &scriptPubKey, txnouttype &typeRet, std::vector< std::vector< unsigned char > > &vSolutionsRet)

int	ScriptSigArgsExpected (txnouttype t, const std::vector< std::vector< unsigned char > > &vSolutions)

bool	IsStandard (const CScript &scriptPubKey, txnouttype &whichType)

bool	IsMine (const CKeyStore &keystore, const CScript &scriptPubKey)

bool	IsMine (const CKeyStore &keystore, const CTxDestination &dest)

void	ExtractAffectedKeys (const CKeyStore &keystore, const CScript &scriptPubKey, std::vector< CKeyID > &vKeys)

bool	ExtractDestination (const CScript &scriptPubKey, CTxDestination &addressRet)

bool	ExtractDestinations (const CScript &scriptPubKey, txnouttype &typeRet, std::vector< CTxDestination > &addressRet, int &nRequiredRet)

bool	SignSignature (const CKeyStore &keystore, const CScript &fromPubKey, CTransaction &txTo, unsigned int nIn, int nHashType=SIGHASH_ALL)

bool	SignSignature (const CKeyStore &keystore, const CTransaction &txFrom, CTransaction &txTo, unsigned int nIn, int nHashType=SIGHASH_ALL)

bool	VerifyScript (const CScript &scriptSig, const CScript &scriptPubKey, const CTransaction &txTo, unsigned int nIn, unsigned int flags, int nHashType)

CScript	CombineSignatures (CScript scriptPubKey, const CTransaction &txTo, unsigned int nIn, const CScript &scriptSig1, const CScript &scriptSig2)

Variables
static const unsigned int	MAX_SCRIPT_ELEMENT_SIZE = 520

static const unsigned int	MAX_OP_RETURN_RELAY = 40

Typedef Documentation

typedef boost::variant<CNoDestination, CKeyID, CScriptID> CTxDestination

A txout script template with a specific destination.

It is either:

CNoDestination: no destination set
CKeyID: TX_PUBKEYHASH destination
CScriptID: TX_SCRIPTHASH destination A CTxDestination is the internal data type encoded in a CBitcoinAddress

Definition at line 218 of file script.h.

Enumeration Type Documentation

anonymous enum

Signature hash types/flags.

Enumerator
SIGHASH_ALL
SIGHASH_NONE
SIGHASH_SINGLE
SIGHASH_ANYONECANPAY

Definition at line 177 of file script.h.

anonymous enum

Script verification flags.

Enumerator
SCRIPT_VERIFY_NONE
SCRIPT_VERIFY_P2SH
SCRIPT_VERIFY_STRICTENC
SCRIPT_VERIFY_EVEN_S
SCRIPT_VERIFY_NOCACHE

Definition at line 186 of file script.h.

enum opcodetype

Script opcodes.

Enumerator
OP_0
OP_FALSE
OP_PUSHDATA1
OP_PUSHDATA2
OP_PUSHDATA4
OP_1NEGATE
OP_RESERVED
OP_1
OP_TRUE
OP_2
OP_3
OP_4
OP_5
OP_6
OP_7
OP_8
OP_9
OP_10
OP_11
OP_12
OP_13
OP_14
OP_15
OP_16
OP_NOP
OP_VER
OP_IF
OP_NOTIF
OP_VERIF
OP_VERNOTIF
OP_ELSE
OP_ENDIF
OP_VERIFY
OP_RETURN
OP_TOALTSTACK
OP_FROMALTSTACK
OP_2DROP
OP_2DUP
OP_3DUP
OP_2OVER
OP_2ROT
OP_2SWAP
OP_IFDUP
OP_DEPTH
OP_DROP
OP_DUP
OP_NIP
OP_OVER
OP_PICK
OP_ROLL
OP_ROT
OP_SWAP
OP_TUCK
OP_CAT
OP_SUBSTR
OP_LEFT
OP_RIGHT
OP_SIZE
OP_INVERT
OP_AND
OP_OR
OP_XOR
OP_EQUAL
OP_EQUALVERIFY
OP_RESERVED1
OP_RESERVED2
OP_1ADD
OP_1SUB
OP_2MUL
OP_2DIV
OP_NEGATE
OP_ABS
OP_NOT
OP_0NOTEQUAL
OP_ADD
OP_SUB
OP_MUL
OP_DIV
OP_MOD
OP_LSHIFT
OP_RSHIFT
OP_BOOLAND
OP_BOOLOR
OP_NUMEQUAL
OP_NUMEQUALVERIFY
OP_NUMNOTEQUAL
OP_LESSTHAN
OP_GREATERTHAN
OP_LESSTHANOREQUAL
OP_GREATERTHANOREQUAL
OP_MIN
OP_MAX
OP_WITHIN
OP_RIPEMD160
OP_SHA1
OP_SHA256
OP_HASH160
OP_HASH256
OP_CODESEPARATOR
OP_CHECKSIG
OP_CHECKSIGVERIFY
OP_CHECKMULTISIG
OP_CHECKMULTISIGVERIFY
OP_NOP1
OP_NOP2
OP_NOP3
OP_NOP4
OP_NOP5
OP_NOP6
OP_NOP7
OP_NOP8
OP_NOP9
OP_NOP10
OP_SMALLDATA
OP_SMALLINTEGER
OP_PUBKEYS
OP_PUBKEYHASH
OP_PUBKEY
OP_INVALIDOPCODE

Definition at line 223 of file script.h.

enum txnouttype

Enumerator
TX_NONSTANDARD
TX_PUBKEY
TX_PUBKEYHASH
TX_SCRIPTHASH
TX_MULTISIG
TX_NULL_DATA

Definition at line 195 of file script.h.

Function Documentation

CScript CombineSignatures	(	CScript	scriptPubKey,
		const CTransaction &	txTo,
		unsigned int	nIn,
		const CScript &	scriptSig1,
		const CScript &	scriptSig2
	)

Definition at line 1783 of file script.cpp.

References CombineSignatures(), EvalScript(), SCRIPT_VERIFY_STRICTENC, and Solver().

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bool EvalScript	(	std::vector< std::vector< unsigned char > > &	stack,
		const CScript &	script,
		const CTransaction &	txTo,
		unsigned int	nIn,
		unsigned int	flags,
		int	nHashType
	)

Definition at line 297 of file script.cpp.

References altstacktop, bnOne, bnZero, CastToBool(), CheckSig(), CScript::FindAndDelete(), CScriptNum::getint(), CScript::GetOp(), CScriptNum::getvch(), Hash(), Hash160(), IsCanonicalPubKey(), IsCanonicalSignature(), MAX_SCRIPT_ELEMENT_SIZE, memcpy(), OP_0NOTEQUAL, OP_1, OP_10, OP_11, OP_12, OP_13, OP_14, OP_15, OP_16, OP_1ADD, OP_1NEGATE, OP_1SUB, OP_2, OP_2DIV, OP_2DROP, OP_2DUP, OP_2MUL, OP_2OVER, OP_2ROT, OP_2SWAP, OP_3, OP_3DUP, OP_4, OP_5, OP_6, OP_7, OP_8, OP_9, OP_ABS, OP_ADD, OP_AND, OP_BOOLAND, OP_BOOLOR, OP_CAT, OP_CHECKMULTISIG, OP_CHECKMULTISIGVERIFY, OP_CHECKSIG, OP_CHECKSIGVERIFY, OP_CODESEPARATOR, OP_DEPTH, OP_DIV, OP_DROP, OP_DUP, OP_ELSE, OP_ENDIF, OP_EQUAL, OP_EQUALVERIFY, OP_FROMALTSTACK, OP_GREATERTHAN, OP_GREATERTHANOREQUAL, OP_HASH160, OP_HASH256, OP_IF, OP_IFDUP, OP_INVERT, OP_LEFT, OP_LESSTHAN, OP_LESSTHANOREQUAL, OP_LSHIFT, OP_MAX, OP_MIN, OP_MOD, OP_MUL, OP_NEGATE, OP_NIP, OP_NOP, OP_NOP1, OP_NOP10, OP_NOP2, OP_NOP3, OP_NOP4, OP_NOP5, OP_NOP6, OP_NOP7, OP_NOP8, OP_NOP9, OP_NOT, OP_NOTIF, OP_NUMEQUAL, OP_NUMEQUALVERIFY, OP_NUMNOTEQUAL, OP_OR, OP_OVER, OP_PICK, OP_PUSHDATA4, OP_RETURN, OP_RIGHT, OP_RIPEMD160, OP_ROLL, OP_ROT, OP_RSHIFT, OP_SHA1, OP_SHA256, OP_SIZE, OP_SUB, OP_SUBSTR, OP_SWAP, OP_TOALTSTACK, OP_TUCK, OP_VERIFY, OP_WITHIN, OP_XOR, popstack(), stacktop, vchFalse(), and vchTrue().

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

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void ExtractAffectedKeys	(	const CKeyStore &	keystore,
		const CScript &	scriptPubKey,
		std::vector< CKeyID > &	vKeys
	)

Definition at line 1584 of file script.cpp.

References CAffectedKeysVisitor::Process().

Referenced by CWallet::GetKeyBirthTimes().

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bool ExtractDestination	(	const CScript &	scriptPubKey,
		CTxDestination &	addressRet
	)

Definition at line 1493 of file script.cpp.

References CPubKey::GetID(), Solver(), TX_PUBKEY, TX_PUBKEYHASH, and TX_SCRIPTHASH.

Referenced by TransactionRecord::decomposeTransaction(), ExtractDestinations(), CWallet::GetAddressBalances(), CWallet::GetAddressGroupings(), CWalletTx::GetAmounts(), getreceivedbyaccount(), CWallet::IsChange(), WalletModel::listCoins(), ListReceived(), parseTransaction(), PaymentServer::processPaymentRequest(), selectCoins(), TransactionDesc::toHTML(), CoinControlDialog::updateLabels(), and CoinControlDialog::updateView().

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bool ExtractDestinations	(	const CScript &	scriptPubKey,
		txnouttype &	typeRet,
		std::vector< CTxDestination > &	addressRet,
		int &	nRequiredRet
	)

Definition at line 1519 of file script.cpp.

References ExtractDestination(), CPubKey::GetID(), Solver(), TX_MULTISIG, TX_NONSTANDARD, and TX_NULL_DATA.

Referenced by parseTransaction(), CAffectedKeysVisitor::Process(), and ScriptPubKeyToJSON().

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const char* GetOpName ( opcodetype opcode )

Definition at line 80 of file script.cpp.

References OP_0, OP_0NOTEQUAL, OP_1, OP_10, OP_11, OP_12, OP_13, OP_14, OP_15, OP_16, OP_1ADD, OP_1NEGATE, OP_1SUB, OP_2, OP_2DIV, OP_2DROP, OP_2DUP, OP_2MUL, OP_2OVER, OP_2ROT, OP_2SWAP, OP_3, OP_3DUP, OP_4, OP_5, OP_6, OP_7, OP_8, OP_9, OP_ABS, OP_ADD, OP_AND, OP_BOOLAND, OP_BOOLOR, OP_CAT, OP_CHECKMULTISIG, OP_CHECKMULTISIGVERIFY, OP_CHECKSIG, OP_CHECKSIGVERIFY, OP_CODESEPARATOR, OP_DEPTH, OP_DIV, OP_DROP, OP_DUP, OP_ELSE, OP_ENDIF, OP_EQUAL, OP_EQUALVERIFY, OP_FROMALTSTACK, OP_GREATERTHAN, OP_GREATERTHANOREQUAL, OP_HASH160, OP_HASH256, OP_IF, OP_IFDUP, OP_INVALIDOPCODE, OP_INVERT, OP_LEFT, OP_LESSTHAN, OP_LESSTHANOREQUAL, OP_LSHIFT, OP_MAX, OP_MIN, OP_MOD, OP_MUL, OP_NEGATE, OP_NIP, OP_NOP, OP_NOP1, OP_NOP10, OP_NOP2, OP_NOP3, OP_NOP4, OP_NOP5, OP_NOP6, OP_NOP7, OP_NOP8, OP_NOP9, OP_NOT, OP_NOTIF, OP_NUMEQUAL, OP_NUMEQUALVERIFY, OP_NUMNOTEQUAL, OP_OR, OP_OVER, OP_PICK, OP_PUBKEY, OP_PUBKEYHASH, OP_PUSHDATA1, OP_PUSHDATA2, OP_PUSHDATA4, OP_RESERVED, OP_RESERVED1, OP_RESERVED2, OP_RETURN, OP_RIGHT, OP_RIPEMD160, OP_ROLL, OP_ROT, OP_RSHIFT, OP_SHA1, OP_SHA256, OP_SIZE, OP_SMALLDATA, OP_SUB, OP_SUBSTR, OP_SWAP, OP_TOALTSTACK, OP_TUCK, OP_VER, OP_VERIF, OP_VERIFY, OP_VERNOTIF, OP_WITHIN, and OP_XOR.

Referenced by CScript::mscore_parse(), and CScript::ToString().

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const char* GetTxnOutputType ( txnouttype t )

Definition at line 65 of file script.cpp.

References TX_MULTISIG, TX_NONSTANDARD, TX_NULL_DATA, TX_PUBKEY, TX_PUBKEYHASH, and TX_SCRIPTHASH.

Referenced by ScriptPubKeyToJSON().

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bool IsCanonicalPubKey	(	const std::vector< unsigned char > &	vchPubKey,
		unsigned int	flags
	)

Definition at line 224 of file script.cpp.

References error(), and SCRIPT_VERIFY_STRICTENC.

Referenced by EvalScript().

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bool IsCanonicalSignature	(	const std::vector< unsigned char > &	vchSig,
		unsigned int	flags
	)

Definition at line 242 of file script.cpp.

References error(), SCRIPT_VERIFY_EVEN_S, SCRIPT_VERIFY_STRICTENC, SIGHASH_ANYONECANPAY, and SIGHASH_SINGLE.

Referenced by EvalScript().

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bool IsMine	(	const CKeyStore &	keystore,
		const CScript &	scriptPubKey
	)

Definition at line 1453 of file script.cpp.

References CKeyStore::GetCScript(), CPubKey::GetID(), CKeyStore::HaveKey(), HaveKeys(), IsMine(), Solver(), TX_MULTISIG, TX_NONSTANDARD, TX_NULL_DATA, TX_PUBKEY, TX_PUBKEYHASH, and TX_SCRIPTHASH.

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bool IsMine	(	const CKeyStore &	keystore,
		const CTxDestination &	dest
	)

Definition at line 1448 of file script.cpp.

Referenced by CWallet::AddToWalletIfInvolvingMe(), CWallet::AvailableCoins(), TransactionRecord::decomposeTransaction(), CWallet::DelAddressBook(), CWallet::GetAddressBalances(), CWallet::GetAddressGroupings(), CWallet::GetCredit(), CWallet::GetDebit(), getreceivedbyaccount(), getreceivedbyaddress(), CWallet::IsChange(), CWallet::IsMine(), IsMine(), IsMyAddress(), listaccounts(), ListReceived(), AddressTablePriv::refreshAddressTable(), selectCoins(), CWallet::SetAddressBook(), TransactionDesc::toHTML(), and validateaddress().

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bool IsStandard	(	const CScript &	scriptPubKey,
		txnouttype &	whichType
	)

Definition at line 1403 of file script.cpp.

References Solver(), TX_MULTISIG, and TX_NONSTANDARD.

Referenced by IsStandardTx().

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int ScriptSigArgsExpected	(	txnouttype	t,
		const std::vector< std::vector< unsigned char > > &	vSolutions
	)

Definition at line 1382 of file script.cpp.

References TX_MULTISIG, TX_NONSTANDARD, TX_NULL_DATA, TX_PUBKEY, TX_PUBKEYHASH, and TX_SCRIPTHASH.

Referenced by AreInputsStandard().

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bool SignSignature	(	const CKeyStore &	keystore,
		const CScript &	fromPubKey,
		CTransaction &	txTo,
		unsigned int	nIn,
		int	nHashType = `SIGHASH_ALL`
	)

Definition at line 1630 of file script.cpp.

References SCRIPT_VERIFY_P2SH, SCRIPT_VERIFY_STRICTENC, SignatureHash(), Solver(), TX_SCRIPTHASH, VerifyScript(), and CTransaction::vin.

Referenced by signrawtransaction(), and SignSignature().

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bool SignSignature	(	const CKeyStore &	keystore,
		const CTransaction &	txFrom,
		CTransaction &	txTo,
		unsigned int	nIn,
		int	nHashType = `SIGHASH_ALL`
	)

Definition at line 1665 of file script.cpp.

References SignSignature(), CTransaction::vin, and CTransaction::vout.

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bool Solver	(	const CScript &	scriptPubKey,
		txnouttype &	typeRet,
		std::vector< std::vector< unsigned char > > &	vSolutionsRet
	)

Definition at line 1186 of file script.cpp.

References CScript::DecodeOP_N(), CScript::GetOp(), CScript::IsPayToScriptHash(), MAX_OP_RETURN_RELAY, OP_0, OP_1, OP_16, OP_CHECKMULTISIG, OP_CHECKSIG, OP_DUP, OP_EQUALVERIFY, OP_HASH160, OP_PUBKEY, OP_PUBKEYHASH, OP_PUBKEYS, OP_RETURN, OP_SMALLDATA, OP_SMALLINTEGER, PAIRTYPE, TX_MULTISIG, TX_NONSTANDARD, TX_NULL_DATA, TX_PUBKEY, TX_PUBKEYHASH, and TX_SCRIPTHASH.

Referenced by AreInputsStandard(), CombineSignatures(), ExtractDestination(), ExtractDestinations(), getOutputType(), IsMine(), CBloomFilter::IsRelevantAndUpdate(), IsStandard(), SignSignature(), and Solver().

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std::string StackString ( const std::vector< std::vector< unsigned char > > & vStack )

inline

Definition at line 381 of file script.h.

References ValueString().

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std::string ValueString ( const std::vector< unsigned char > & vch )

inline

Definition at line 373 of file script.h.

References CScriptNum::getint(), HexStr(), and strprintf.

Referenced by CScript::mscore_parse(), StackString(), and CScript::ToString().

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bool VerifyScript	(	const CScript &	scriptSig,
		const CScript &	scriptPubKey,
		const CTransaction &	txTo,
		unsigned int	nIn,
		unsigned int	flags,
		int	nHashType
	)