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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

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bitcoin / src / psbt.h

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70,656 bytes · SHA-256 cc7139b01872981a… · View upstream ↗

1001            // Write amount and spk
1002            SerializeToVector(s, CompactSizeWriter(PSBT_OUT_AMOUNT));
1003            SerializeToVector(s, amount);
1004
1005            SerializeToVector(s, CompactSizeWriter(PSBT_OUT_SCRIPT));
1006            s << script;
1007        }
1008
1009        // Write proprietary things
1010        for (const auto& entry : m_proprietary) {
1011            s << entry.key;
1012            s << entry.value;
1013        }
1014
1015        // Write taproot internal key
1016        if (!m_tap_internal_key.IsNull()) {
1017            SerializeToVector(s, PSBT_OUT_TAP_INTERNAL_KEY);
1018            s << ToByteVector(m_tap_internal_key);
1019        }
1020
1021        // Write taproot tree
1022        if (!m_tap_tree.empty()) {
1023            SerializeToVector(s, PSBT_OUT_TAP_TREE);
1024            std::vector<unsigned char> value;
1025            VectorWriter s_value{value, 0};
1026            for (const auto& [depth, leaf_ver, script] : m_tap_tree) {
1027                s_value << depth;
1028                s_value << leaf_ver;
1029                s_value << script;
1030            }
1031            s << value;
1032        }
1033
1034        // Write taproot bip32 keypaths
1035        for (const auto& [xonly, leaf] : m_tap_bip32_paths) {
1036            const auto& [leaf_hashes, origin] = leaf;
1037            SerializeToVector(s, PSBT_OUT_TAP_BIP32_DERIVATION, xonly);
1038            std::vector<unsigned char> value;
1039            VectorWriter s_value{value, 0};
1040            s_value << leaf_hashes;
1041            SerializeKeyOrigin(s_value, origin);
1042            s << value;
1043        }
1044
1045        // Write MuSig2 Participants
1046        for (const auto& [agg_pubkey, part_pubs] : m_musig2_participants) {
1047            SerializeToVector(s, CompactSizeWriter(PSBT_OUT_MUSIG2_PARTICIPANT_PUBKEYS), std::span{agg_pubkey});
1048            std::vector<unsigned char> value;
1049            VectorWriter s_value{value, 0};
1050            for (auto& pk : part_pubs) {
1051                s_value << std::span{pk};
1052            }
1053            s << value;
1054        }
1055
1056        // Write unknown things
1057        for (auto& entry : unknown) {
1058            s << entry.first;
1059            s << entry.second;
1060        }
1061
1062        s << PSBT_SEPARATOR;
1063    }
1064
1065
1066    template <typename Stream>
1067    inline void Unserialize(Stream& s) {
1068        // Used for duplicate key detection
1069        std::set<std::vector<unsigned char>> key_lookup;
1070        // Cache whether PSBTv2 required fields are found
1071        bool found_amount = false;
1072        bool found_script = false;
1073
1074        // Read loop
1075        bool found_sep = false;
1076        while(!s.empty()) {
1077            // Read the key of format "<keylen><keytype><keydata>" after which
1078            // "key" will contain "<keytype><keydata>"
1079            std::vector<unsigned char> key;
1080            s >> key;
1081
1082            // the key is empty if that was actually a separator byte
1083            // This is a special case for key lengths 0 as those are not allowed (except for separator)
1084            if (key.empty()) {
1085                found_sep = true;
1086                break;
1087            }
1088
1089            // Duplicate keys are not permitted
1090            if (!key_lookup.emplace(key).second) {
1091                throw std::ios_base::failure(tfm::format("Duplicate Key, output key \"%s\" already provided", HexStr(key)));
1092            }
1093
1094            // "skey" is used so that "key" is unchanged after reading keytype below
1095            SpanReader skey{key};
1096            // keytype is of the format compact size uint at the beginning of "key"
1097            uint64_t type = ReadCompactSize(skey);
1098
1099            // Do stuff based on keytype "type", i.e., key checks, reading values of the
1100            // format "<valuelen><valuedata>" from the stream "s", and value checks
1101            switch(type) {
1102                case PSBT_OUT_REDEEMSCRIPT:
1103                {
1104                    ExpectedKeySize("Output redeemScript", key, 1);
1105                    s >> redeem_script;
1106                    break;
1107                }
1108                case PSBT_OUT_WITNESSSCRIPT:
1109                {
1110                    ExpectedKeySize("Output witnessScript", key, 1);
1111                    s >> witness_script;
1112                    break;
1113                }
1114                case PSBT_OUT_BIP32_DERIVATION:
1115                {
1116                    DeserializeHDKeypaths(s, key, hd_keypaths);
1117                    break;
1118                }
1119                case PSBT_OUT_AMOUNT:
1120                {
1121                    ExpectedKeySize("Output Amount", key, 1);
1122                    if (m_psbt_version < 2) {
1123                        throw std::ios_base::failure("Output amount is not allowed in PSBTv0");
1124                    }
1125                    UnserializeFromVector(s, amount);
1126                    found_amount = true;
1127                    break;
1128                }
1129                case PSBT_OUT_SCRIPT:
1130                {
1131                    ExpectedKeySize("Output Script", key, 1);
1132                    if (m_psbt_version < 2) {
1133                        throw std::ios_base::failure("Output script is not allowed in PSBTv0");
1134                    }
1135                    s >> script;
1136                    found_script = true;
1137                    break;
1138                }
1139                case PSBT_OUT_TAP_INTERNAL_KEY:
1140                {
1141                    ExpectedKeySize("Output Taproot Internal Key", key, 1);
1142                    UnserializeFromVector(s, m_tap_internal_key);
1143                    break;
1144                }
1145                case PSBT_OUT_TAP_TREE:
1146                {
1147                    ExpectedKeySize("Output Taproot Tree Key", key, 1);
1148                    std::vector<unsigned char> tree_v;
1149                    s >> tree_v;
1150                    SpanReader s_tree{tree_v};
1151                    if (s_tree.empty()) {
1152                        throw std::ios_base::failure("Output Taproot tree must not be empty");
1153                    }
1154                    TaprootBuilder builder;
1155                    while (!s_tree.empty()) {
1156                        uint8_t depth;
1157                        uint8_t leaf_ver;
1158                        std::vector<unsigned char> script;
1159                        s_tree >> depth;
1160                        s_tree >> leaf_ver;
1161                        s_tree >> script;
1162                        if (depth > TAPROOT_CONTROL_MAX_NODE_COUNT) {
1163                            throw std::ios_base::failure("Output Taproot tree has as leaf greater than Taproot maximum depth");
1164                        }
1165                        if ((leaf_ver & ~TAPROOT_LEAF_MASK) != 0) {
1166                            throw std::ios_base::failure("Output Taproot tree has a leaf with an invalid leaf version");
1167                        }
1168                        m_tap_tree.emplace_back(depth, leaf_ver, script);
1169                        builder.Add((int)depth, script, (int)leaf_ver, /*track=*/true);
1170                    }
1171                    if (!builder.IsComplete()) {
1172                        throw std::ios_base::failure("Output Taproot tree is malformed");
1173                    }
1174                    break;
1175                }
1176                case PSBT_OUT_TAP_BIP32_DERIVATION:
1177                {
1178                    ExpectedKeySize("Output Taproot BIP32 Keypath", key, 33);
1179                    XOnlyPubKey xonly(uint256(std::span<uint8_t>(key).last(32)));
1180                    std::set<uint256> leaf_hashes;
1181                    uint64_t value_len = ReadCompactSize(s);
1182                    size_t before_hashes = s.size();
1183                    s >> leaf_hashes;
1184                    size_t after_hashes = s.size();
1185                    size_t hashes_len = before_hashes - after_hashes;
1186                    if (hashes_len > value_len) {
1187                        throw std::ios_base::failure("Output Taproot BIP32 keypath has an invalid length");
1188                    }
1189                    size_t origin_len = value_len - hashes_len;
1190                    m_tap_bip32_paths.emplace(xonly, std::make_pair(leaf_hashes, DeserializeKeyOrigin(s, origin_len)));
1191                    break;
1192                }
1193                case PSBT_OUT_MUSIG2_PARTICIPANT_PUBKEYS:
1194                {
1195                    ExpectedKeySize("Output MuSig2 Participants Pubkeys", key, CPubKey::COMPRESSED_SIZE + 1);
1196                    DeserializeMuSig2ParticipantPubkeys(s, skey, m_musig2_participants, std::string{"Output"});
1197                    break;
1198                }
1199                case PSBT_OUT_PROPRIETARY:
1200                {
1201                    PSBTProprietary this_prop;
1202                    skey >> this_prop.identifier;
1203                    this_prop.subtype = ReadCompactSize(skey);
1204                    this_prop.key = key;
1205
1206                    s >> this_prop.value;
1207                    m_proprietary.insert(this_prop);
1208                    break;
1209                }
1210                // Unknown stuff
1211                default: {
1212                    // Read in the value
1213                    std::vector<unsigned char> val_bytes;
1214                    s >> val_bytes;
1215                    unknown.emplace(std::move(key), std::move(val_bytes));
1216                    break;
1217                }
1218            }
1219        }
1220
1221        if (!found_sep) {
1222            throw std::ios_base::failure("Separator is missing at the end of an output map");
1223        }
1224
1225        // Make sure required PSBTv2 fields are present
1226        if (m_psbt_version >= 2) {
1227            if (!found_amount) {
1228                throw std::ios_base::failure("Output amount is required in PSBTv2");
1229            }
1230            if (!found_script) {
1231                throw std::ios_base::failure("Output script is required in PSBTv2");
1232            }
1233        }
1234    }
1235};
1236
1237/** A version of CTransaction with the PSBT format*/
1238class PartiallySignedTransaction
1239{
1240private:
1241    std::optional<uint32_t> m_version;
1242
1243public:
1244    // We use a vector of CExtPubKey in the event that there happens to be the same KeyOriginInfos for different CExtPubKeys
1245    // Note that this map swaps the key and values from the serialization
1246    std::map<KeyOriginInfo, std::set<CExtPubKey>> m_xpubs;
1247    std::optional<std::bitset<8>> m_tx_modifiable;
1248    std::vector<PSBTInput> inputs;
1249    std::vector<PSBTOutput> outputs;
1250    std::map<std::vector<unsigned char>, std::vector<unsigned char>> unknown;

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cmake/bitcoin-build-config.h.in src/consensus/amount.h src/consensus/consensus.h src/primitives/block.h src/primitives/transaction.h src/crypto/sha256.h src/util/moneystr.h src/clientversion.h src/uint256.h src/script/script.h src/policy/policy.h CMakeLists.txt README.md COPYING src/consensus/tx_check.cpp src/consensus/tx_verify.cpp src/consensus/merkle.cpp src/pow.cpp src/validation.cpp src/script/interpreter.cpp src/script/solver.cpp src/script/sign.cpp src/key_io.cpp src/net.cpp src/net_processing.cpp src/netaddress.cpp src/protocol.h src/wallet/wallet.cpp src/wallet/spend.cpp

← Previous 250 linesCode page 5Next 250 lines →

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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