psbt.h File Reference

#include <node/transaction.h>
#include <primitives/transaction.h>
#include <pubkey.h>
#include <script/sign.h>
#include <script/signingprovider.h>
#include <optional>

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Classes
struct	PSBTInput
	A structure for PSBTs which contain per-input information. More...
struct	PSBTOutput
	A structure for PSBTs which contains per output information. More...
struct	PartiallySignedTransaction
	A version of CTransaction with the PSBT format. More...

Enumerations
enum class	PSBTRole {   CREATOR , UPDATER , SIGNER , FINALIZER ,   EXTRACTOR }

Functions
std::string	PSBTRoleName (PSBTRole role)
bool	PSBTInputSigned (const PSBTInput &input)
	Checks whether a PSBTInput is already signed.
bool	SignPSBTInput (const SigningProvider &provider, PartiallySignedTransaction &psbt, int index, SigHashType sighash=SigHashType(), SignatureData *out_sigdata=nullptr, bool use_dummy=false)
	Signs a PSBTInput, verifying that all provided data matches what is being signed.
void	UpdatePSBTOutput (const SigningProvider &provider, PartiallySignedTransaction &psbt, int index)
	Updates a PSBTOutput with information from provider.
bool	FinalizePSBT (PartiallySignedTransaction &psbtx)
	Finalizes a PSBT if possible, combining partial signatures.
bool	FinalizeAndExtractPSBT (PartiallySignedTransaction &psbtx, CMutableTransaction &result)
	Finalizes a PSBT if possible, and extracts it to a CMutableTransaction if it could be finalized.
TransactionError	CombinePSBTs (PartiallySignedTransaction &out, const std::vector< PartiallySignedTransaction > &psbtxs)
	Combines PSBTs with the same underlying transaction, resulting in a single PSBT with all partial signatures from each input.
bool	DecodeBase64PSBT (PartiallySignedTransaction &decoded_psbt, const std::string &base64_psbt, std::string &error)
	Decode a base64ed PSBT into a PartiallySignedTransaction.
bool	DecodeRawPSBT (PartiallySignedTransaction &decoded_psbt, Span< const std::byte > raw_psbt, std::string &error)
	Decode a raw (binary blob) PSBT into a PartiallySignedTransaction.

Variables
static constexpr uint8_t	PSBT_MAGIC_BYTES [5] = {'p', 's', 'b', 't', 0xff}
static constexpr uint8_t	PSBT_GLOBAL_UNSIGNED_TX = 0x00
static constexpr uint8_t	PSBT_IN_UTXO = 0x00
static constexpr uint8_t	PSBT_IN_PARTIAL_SIG = 0x02
static constexpr uint8_t	PSBT_IN_SIGHASH = 0x03
static constexpr uint8_t	PSBT_IN_REDEEMSCRIPT = 0x04
static constexpr uint8_t	PSBT_IN_BIP32_DERIVATION = 0x06
static constexpr uint8_t	PSBT_IN_SCRIPTSIG = 0x07
static constexpr uint8_t	PSBT_OUT_REDEEMSCRIPT = 0x00
static constexpr uint8_t	PSBT_OUT_BIP32_DERIVATION = 0x02
static constexpr uint8_t	PSBT_SEPARATOR = 0x00
const std::streamsize	MAX_FILE_SIZE_PSBT = 100000000

Enumeration Type Documentation

PSBTRole

enum class PSBTRole

strong

Enumerator
CREATOR
UPDATER
SIGNER
FINALIZER
EXTRACTOR

Definition at line 506 of file psbt.h.

Function Documentation

CombinePSBTs()

TransactionError CombinePSBTs	(	PartiallySignedTransaction &	out,
		const std::vector< PartiallySignedTransaction > &	psbtxs
	)

Combines PSBTs with the same underlying transaction, resulting in a single PSBT with all partial signatures from each input.

Parameters

[out]	out	the combined PSBT, if successful
[in]	psbtxs	the PSBTs to combine

Returns

error (OK if we successfully combined the transactions, other error if they were not compatible)

Definition at line 264 of file psbt.cpp.

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DecodeBase64PSBT()

bool DecodeBase64PSBT	(	PartiallySignedTransaction &	decoded_psbt,
		const std::string &	base64_psbt,
		std::string &	error
	)

Decode a base64ed PSBT into a PartiallySignedTransaction.

Definition at line 296 of file psbt.cpp.

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DecodeRawPSBT()

bool DecodeRawPSBT	(	PartiallySignedTransaction &	decoded_psbt,
		Span< const std::byte >	raw_psbt,
		std::string &	error
	)

Decode a raw (binary blob) PSBT into a PartiallySignedTransaction.

Definition at line 306 of file psbt.cpp.

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FinalizeAndExtractPSBT()

bool FinalizeAndExtractPSBT	(	PartiallySignedTransaction &	psbtx,
		CMutableTransaction &	result
	)

Finalizes a PSBT if possible, and extracts it to a CMutableTransaction if it could be finalized.

Parameters

[in]	psbtx	PartiallySignedTransaction
[out]	result	CMutableTransaction representing the complete transaction, if successful

Returns

True if we successfully extracted the transaction, false otherwise

Definition at line 247 of file psbt.cpp.

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FinalizePSBT()

bool FinalizePSBT

(

PartiallySignedTransaction &

psbtx

)

Finalizes a PSBT if possible, combining partial signatures.

Parameters

[in,out]

psbtx

PartiallySignedTransaction to finalize return True if the PSBT is now complete, false otherwise

Definition at line 232 of file psbt.cpp.

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PSBTInputSigned()

bool PSBTInputSigned

(

const PSBTInput &

input

)

Checks whether a PSBTInput is already signed.

Definition at line 160 of file psbt.cpp.

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PSBTRoleName()

std::string PSBTRoleName

(

PSBTRole

role

)

Definition at line 279 of file psbt.cpp.

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SignPSBTInput()

bool SignPSBTInput	(	const SigningProvider &	provider,
		PartiallySignedTransaction &	psbt,
		int	index,
		SigHashType	sighash = SigHashType(),
		SignatureData *	out_sigdata = nullptr,
		bool	use_dummy = false
	)

Signs a PSBTInput, verifying that all provided data matches what is being signed.

Definition at line 186 of file psbt.cpp.

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UpdatePSBTOutput()

void UpdatePSBTOutput	(	const SigningProvider &	provider,
		PartiallySignedTransaction &	psbt,
		int	index
	)

Updates a PSBTOutput with information from provider.

This fills in the redeem_script, witness_script, and hd_keypaths where possible.

Definition at line 164 of file psbt.cpp.

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Variable Documentation

MAX_FILE_SIZE_PSBT

const std::streamsize MAX_FILE_SIZE_PSBT = 100000000

Definition at line 41 of file psbt.h.

PSBT_GLOBAL_UNSIGNED_TX

constexpr uint8_t PSBT_GLOBAL_UNSIGNED_TX = 0x00

staticconstexpr

Definition at line 20 of file psbt.h.

PSBT_IN_BIP32_DERIVATION

constexpr uint8_t PSBT_IN_BIP32_DERIVATION = 0x06

staticconstexpr

Definition at line 27 of file psbt.h.

PSBT_IN_PARTIAL_SIG

constexpr uint8_t PSBT_IN_PARTIAL_SIG = 0x02

staticconstexpr

Definition at line 24 of file psbt.h.

PSBT_IN_REDEEMSCRIPT

constexpr uint8_t PSBT_IN_REDEEMSCRIPT = 0x04

staticconstexpr

Definition at line 26 of file psbt.h.

PSBT_IN_SCRIPTSIG

constexpr uint8_t PSBT_IN_SCRIPTSIG = 0x07

staticconstexpr

Definition at line 28 of file psbt.h.

PSBT_IN_SIGHASH

constexpr uint8_t PSBT_IN_SIGHASH = 0x03

staticconstexpr

Definition at line 25 of file psbt.h.

PSBT_IN_UTXO

constexpr uint8_t PSBT_IN_UTXO = 0x00

staticconstexpr

Definition at line 23 of file psbt.h.

PSBT_MAGIC_BYTES

constexpr uint8_t PSBT_MAGIC_BYTES[5] = {'p', 's', 'b', 't', 0xff}

staticconstexpr

Definition at line 17 of file psbt.h.

PSBT_OUT_BIP32_DERIVATION

constexpr uint8_t PSBT_OUT_BIP32_DERIVATION = 0x02

staticconstexpr

Definition at line 32 of file psbt.h.

PSBT_OUT_REDEEMSCRIPT

constexpr uint8_t PSBT_OUT_REDEEMSCRIPT = 0x00

staticconstexpr

Definition at line 31 of file psbt.h.

PSBT_SEPARATOR

constexpr uint8_t PSBT_SEPARATOR = 0x00

staticconstexpr

Definition at line 37 of file psbt.h.