Bitcoin Core  22.99.0
P2P Digital Currency
Classes | Enumerations | Functions | Variables
psbt.h File Reference
#include <attributes.h>
#include <node/transaction.h>
#include <policy/feerate.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  PSBTRole {
  PSBTRole::CREATOR, PSBTRole::UPDATER, PSBTRole::SIGNER, PSBTRole::FINALIZER,
  PSBTRole::EXTRACTOR
}
 

Functions

std::string PSBTRoleName (PSBTRole role)
 
PrecomputedTransactionData PrecomputePSBTData (const PartiallySignedTransaction &psbt)
 Compute a PrecomputedTransactionData object from a psbt. More...
 
bool PSBTInputSigned (const PSBTInput &input)
 Checks whether a PSBTInput is already signed. More...
 
bool SignPSBTInput (const SigningProvider &provider, PartiallySignedTransaction &psbt, int index, const PrecomputedTransactionData *txdata, int sighash=SIGHASH_ALL, SignatureData *out_sigdata=nullptr)
 Signs a PSBTInput, verifying that all provided data matches what is being signed. More...
 
size_t CountPSBTUnsignedInputs (const PartiallySignedTransaction &psbt)
 Counts the unsigned inputs of a PSBT. More...
 
void UpdatePSBTOutput (const SigningProvider &provider, PartiallySignedTransaction &psbt, int index)
 Updates a PSBTOutput with information from provider. More...
 
bool FinalizePSBT (PartiallySignedTransaction &psbtx)
 Finalizes a PSBT if possible, combining partial signatures. More...
 
bool FinalizeAndExtractPSBT (PartiallySignedTransaction &psbtx, CMutableTransaction &result)
 Finalizes a PSBT if possible, and extracts it to a CMutableTransaction if it could be finalized. More...
 
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. More...
 
bool DecodeBase64PSBT (PartiallySignedTransaction &decoded_psbt, const std::string &base64_psbt, std::string &error)
 Decode a base64ed PSBT into a PartiallySignedTransaction. More...
 
bool DecodeRawPSBT (PartiallySignedTransaction &decoded_psbt, const std::string &raw_psbt, std::string &error)
 Decode a raw (binary blob) PSBT into a PartiallySignedTransaction. More...
 

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_NON_WITNESS_UTXO = 0x00
 
static constexpr uint8_t PSBT_IN_WITNESS_UTXO = 0x01
 
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_WITNESSSCRIPT = 0x05
 
static constexpr uint8_t PSBT_IN_BIP32_DERIVATION = 0x06
 
static constexpr uint8_t PSBT_IN_SCRIPTSIG = 0x07
 
static constexpr uint8_t PSBT_IN_SCRIPTWITNESS = 0x08
 
static constexpr uint8_t PSBT_OUT_REDEEMSCRIPT = 0x00
 
static constexpr uint8_t PSBT_OUT_WITNESSSCRIPT = 0x01
 
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 PSBTRole
strong
Enumerator
CREATOR 
UPDATER 
SIGNER 
FINALIZER 
EXTRACTOR 

Definition at line 560 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]outthe combined PSBT, if successful
[in]psbtxsthe PSBTs to combine
Returns
error (OK if we successfully combined the transactions, other error if they were not compatible)

Definition at line 349 of file psbt.cpp.

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◆ CountPSBTUnsignedInputs()

size_t CountPSBTUnsignedInputs ( const PartiallySignedTransaction psbt)

Counts the unsigned inputs of a PSBT.

Definition at line 202 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 374 of file psbt.cpp.

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◆ DecodeRawPSBT()

bool DecodeRawPSBT ( PartiallySignedTransaction decoded_psbt,
const std::string &  raw_psbt,
std::string &  error 
)

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

Definition at line 385 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]psbtxPartiallySignedTransaction
[out]resultCMutableTransaction representing the complete transaction, if successful
Returns
True if we successfully extracted the transaction, false otherwise

Definition at line 333 of file psbt.cpp.

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◆ FinalizePSBT()

bool FinalizePSBT ( PartiallySignedTransaction psbtx)

Finalizes a PSBT if possible, combining partial signatures.

Parameters
[in,out]psbtxPartiallySignedTransaction to finalize return True if the PSBT is now complete, false otherwise

Definition at line 318 of file psbt.cpp.

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◆ PrecomputePSBTData()

PrecomputedTransactionData PrecomputePSBTData ( const PartiallySignedTransaction psbt)

Compute a PrecomputedTransactionData object from a psbt.

Definition at line 233 of file psbt.cpp.

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◆ PSBTInputSigned()

bool PSBTInputSigned ( const PSBTInput input)

Checks whether a PSBTInput is already signed.

Definition at line 197 of file psbt.cpp.

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◆ PSBTRoleName()

std::string PSBTRoleName ( PSBTRole  role)

Definition at line 362 of file psbt.cpp.

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◆ SignPSBTInput()

bool SignPSBTInput ( const SigningProvider provider,
PartiallySignedTransaction psbt,
int  index,
const PrecomputedTransactionData txdata,
int  sighash = SIGHASH_ALL,
SignatureData out_sigdata = nullptr 
)

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

txdata should be the output of PrecomputePSBTData (which can be shared across multiple SignPSBTInput calls). If it is nullptr, a dummy signature will be created.

Definition at line 250 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 213 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 46 of file psbt.h.

◆ PSBT_GLOBAL_UNSIGNED_TX

constexpr uint8_t PSBT_GLOBAL_UNSIGNED_TX = 0x00
staticconstexpr

Definition at line 22 of file psbt.h.

◆ PSBT_IN_BIP32_DERIVATION

constexpr uint8_t PSBT_IN_BIP32_DERIVATION = 0x06
staticconstexpr

Definition at line 31 of file psbt.h.

◆ PSBT_IN_NON_WITNESS_UTXO

constexpr uint8_t PSBT_IN_NON_WITNESS_UTXO = 0x00
staticconstexpr

Definition at line 25 of file psbt.h.

◆ PSBT_IN_PARTIAL_SIG

constexpr uint8_t PSBT_IN_PARTIAL_SIG = 0x02
staticconstexpr

Definition at line 27 of file psbt.h.

◆ PSBT_IN_REDEEMSCRIPT

constexpr uint8_t PSBT_IN_REDEEMSCRIPT = 0x04
staticconstexpr

Definition at line 29 of file psbt.h.

◆ PSBT_IN_SCRIPTSIG

constexpr uint8_t PSBT_IN_SCRIPTSIG = 0x07
staticconstexpr

Definition at line 32 of file psbt.h.

◆ PSBT_IN_SCRIPTWITNESS

constexpr uint8_t PSBT_IN_SCRIPTWITNESS = 0x08
staticconstexpr

Definition at line 33 of file psbt.h.

◆ PSBT_IN_SIGHASH

constexpr uint8_t PSBT_IN_SIGHASH = 0x03
staticconstexpr

Definition at line 28 of file psbt.h.

◆ PSBT_IN_WITNESS_UTXO

constexpr uint8_t PSBT_IN_WITNESS_UTXO = 0x01
staticconstexpr

Definition at line 26 of file psbt.h.

◆ PSBT_IN_WITNESSSCRIPT

constexpr uint8_t PSBT_IN_WITNESSSCRIPT = 0x05
staticconstexpr

Definition at line 30 of file psbt.h.

◆ PSBT_MAGIC_BYTES

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

Definition at line 19 of file psbt.h.

◆ PSBT_OUT_BIP32_DERIVATION

constexpr uint8_t PSBT_OUT_BIP32_DERIVATION = 0x02
staticconstexpr

Definition at line 38 of file psbt.h.

◆ PSBT_OUT_REDEEMSCRIPT

constexpr uint8_t PSBT_OUT_REDEEMSCRIPT = 0x00
staticconstexpr

Definition at line 36 of file psbt.h.

◆ PSBT_OUT_WITNESSSCRIPT

constexpr uint8_t PSBT_OUT_WITNESSSCRIPT = 0x01
staticconstexpr

Definition at line 37 of file psbt.h.

◆ PSBT_SEPARATOR

constexpr uint8_t PSBT_SEPARATOR = 0x00
staticconstexpr

Definition at line 42 of file psbt.h.