sign.cpp File Reference

#include <script/sign.h>
#include <consensus/amount.h>
#include <key.h>
#include <policy/policy.h>
#include <primitives/transaction.h>
#include <script/signingprovider.h>
#include <script/standard.h>
#include <uint256.h>

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Typedefs
typedef std::vector< uint8_t >	valtype

Functions
static bool	GetCScript (const SigningProvider &provider, const SignatureData &sigdata, const CScriptID &scriptid, CScript &script)
static bool	GetPubKey (const SigningProvider &provider, const SignatureData &sigdata, const CKeyID &address, CPubKey &pubkey)
static bool	CreateSig (const BaseSignatureCreator &creator, SignatureData &sigdata, const SigningProvider &provider, std::vector< uint8_t > &sig_out, const CPubKey &pubkey, const CScript &scriptcode)
static bool	SignStep (const SigningProvider &provider, const BaseSignatureCreator &creator, const CScript &scriptPubKey, std::vector< valtype > &ret, TxoutType &whichTypeRet, SignatureData &sigdata)
	Sign scriptPubKey using signature made with creator. More...
static CScript	PushAll (const std::vector< valtype > &values)
bool	ProduceSignature (const SigningProvider &provider, const BaseSignatureCreator &creator, const CScript &fromPubKey, SignatureData &sigdata)
	Produce a script signature using a generic signature creator. More...
SignatureData	DataFromTransaction (const CMutableTransaction &tx, unsigned int nIn, const CTxOut &txout)
	Extract signature data from a transaction input, and insert it. More...
void	UpdateInput (CTxIn &input, const SignatureData &data)
bool	SignSignature (const SigningProvider &provider, const CScript &fromPubKey, CMutableTransaction &txTo, unsigned int nIn, const Amount amount, SigHashType sigHashType)
	Produce a script signature for a transaction. More...
bool	SignSignature (const SigningProvider &provider, const CTransaction &txFrom, CMutableTransaction &txTo, unsigned int nIn, SigHashType sigHashType)
bool	IsSolvable (const SigningProvider &provider, const CScript &script)
	Check whether we know how to sign for an output like this, assuming we have all private keys. More...
bool	SignTransaction (CMutableTransaction &mtx, const SigningProvider *keystore, const std::map< COutPoint, Coin > &coins, SigHashType sigHashType, std::map< int, std::string > &input_errors)
	Sign the CMutableTransaction. More...

Variables
const BaseSignatureCreator &	DUMMY_SIGNATURE_CREATOR
	A signature creator that just produces 71-byte empty signatures. More...
const BaseSignatureCreator &	DUMMY_MAXIMUM_SIGNATURE_CREATOR
	A signature creator that just produces 72-byte empty signatures. More...

Typedef Documentation

valtype

typedef std::vector<uint8_t> valtype

Definition at line 16 of file sign.cpp.

Function Documentation

CreateSig()

static bool CreateSig ( const BaseSignatureCreator &  creator, SignatureData &  sigdata, const SigningProvider &  provider, std::vector< uint8_t > &  sig_out, const CPubKey &  pubkey, const CScript &  scriptcode  )

static

Definition at line 74 of file sign.cpp.

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DataFromTransaction()

SignatureData DataFromTransaction	(	const CMutableTransaction &	tx,
		unsigned int	nIn,
		const CTxOut &	txout
	)

Extract signature data from a transaction input, and insert it.

Definition at line 275 of file sign.cpp.

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GetCScript()

static bool GetCScript ( const SigningProvider &  provider, const SignatureData &  sigdata, const CScriptID &  scriptid, CScript &  script  )

static

Definition at line 41 of file sign.cpp.

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GetPubKey()

static bool GetPubKey ( const SigningProvider &  provider, const SignatureData &  sigdata, const CKeyID &  address, CPubKey &  pubkey  )

static

Definition at line 55 of file sign.cpp.

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IsSolvable()

bool IsSolvable	(	const SigningProvider &	provider,
		const CScript &	script
	)

Check whether we know how to sign for an output like this, assuming we have all private keys.

While this function does not need private keys, the passed keystore is used to look up public keys and redeemscripts by hash. Solvability is unrelated to whether we consider this output to be ours.

Definition at line 424 of file sign.cpp.

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ProduceSignature()

bool ProduceSignature	(	const SigningProvider &	provider,
		const BaseSignatureCreator &	creator,
		const CScript &	fromPubKey,
		SignatureData &	sigdata
	)

Produce a script signature using a generic signature creator.

Definition at line 198 of file sign.cpp.

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PushAll()

static CScript PushAll ( const std::vector< valtype > &  values )

static

Definition at line 183 of file sign.cpp.

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SignSignature() [1/2]

bool SignSignature	(	const SigningProvider &	provider,
		const CScript &	fromPubKey,
		CMutableTransaction &	txTo,
		unsigned int	nIn,
		const Amount	amount,
		SigHashType	sigHashType
	)

Produce a script signature for a transaction.

Definition at line 350 of file sign.cpp.

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SignSignature() [2/2]

bool SignSignature	(	const SigningProvider &	provider,
		const CTransaction &	txFrom,
		CMutableTransaction &	txTo,
		unsigned int	nIn,
		SigHashType	sigHashType
	)

Definition at line 363 of file sign.cpp.

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SignStep()

static bool SignStep ( const SigningProvider &  provider, const BaseSignatureCreator &  creator, const CScript &  scriptPubKey, std::vector< valtype > &  ret, TxoutType &  whichTypeRet, SignatureData &  sigdata  )

static

Sign scriptPubKey using signature made with creator.

Signatures are returned in scriptSigRet (or returns false if scriptPubKey can't be signed), unless whichTypeRet is TxoutType::SCRIPTHASH, in which case scriptSigRet is the redemption script. Returns false if scriptPubKey could not be completely satisfied.

Definition at line 106 of file sign.cpp.

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SignTransaction()

bool SignTransaction	(	CMutableTransaction &	mtx,
		const SigningProvider *	keystore,
		const std::map< COutPoint, Coin > &	coins,
		SigHashType	sigHashType,
		std::map< int, std::string > &	input_errors
	)

Sign the CMutableTransaction.

Definition at line 441 of file sign.cpp.

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UpdateInput()

void UpdateInput	(	CTxIn &	input,
		const SignatureData &	data
	)

Definition at line 331 of file sign.cpp.

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Variable Documentation

DUMMY_MAXIMUM_SIGNATURE_CREATOR

const BaseSignatureCreator& DUMMY_MAXIMUM_SIGNATURE_CREATOR

Initial value:

=
    DummySignatureCreator(33, 32)

A signature creator that just produces 72-byte empty signatures.

Definition at line 421 of file sign.cpp.

DUMMY_SIGNATURE_CREATOR

const BaseSignatureCreator& DUMMY_SIGNATURE_CREATOR

Initial value:

=
    DummySignatureCreator(32, 32)

A signature creator that just produces 71-byte empty signatures.

Definition at line 419 of file sign.cpp.