76 lines
2.4 KiB
Dart
76 lines
2.4 KiB
Dart
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import 'package:flutter/services.dart';
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import 'package:flutter_bitcoin/flutter_bitcoin.dart' as bitcoin;
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import 'dart:typed_data';
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import 'package:hex/hex.dart';
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import 'package:crypto/crypto.dart';
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import 'package:bip39/bip39.dart' as bip39;
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import 'package:bip32/bip32.dart' as bip32;
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final bip32.NetworkType hnsMainnet = bip32.NetworkType(
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bip32: bip32.Bip32Type(public: 0x0488b21e, private: 0x0488ade4),
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wif: 0x80,
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);
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final bitcoin.NetworkType hnsMainnetBitcoin = bitcoin.NetworkType(
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messagePrefix: '\x18Handshake Signed Message:\n',
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bech32: 'hs',
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bip32: bitcoin.Bip32Type(public: 0x0488b21e, private: 0x0488ade4),
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pubKeyHash: 0x00,
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scriptHash: 0x05,
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wif: 0x80);
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String getXpub(String seedPhrase) {
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List<int> seedints = bip39.mnemonicToSeed(seedPhrase);
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Uint8List seed = Uint8List.fromList(seedints);
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bip32.BIP32 master = bip32.BIP32.fromSeed(seed, hnsMainnet);
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return master.derivePath("m/44'/5353'/0'").neutered().toBase58();
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}
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Future<String> signTX(String seedPhrase, Map<String, dynamic> txData) async {
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final seed = bip39.mnemonicToSeed(seedPhrase);
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final master = bip32.BIP32.fromSeed(seed, hnsMainnet);
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final txb = bitcoin.TransactionBuilder(
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network: hnsMainnetBitcoin,
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);
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// for (var input in txData['inputs']) {
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// final prevout = input['prevout'];
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// final vin = input['vin'];
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// if (vin != null && vin is int) {
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// final hash = prevout['hash'];
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// final index = prevout['index'];
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// bitcoin.ECPair keyPair = bitcoin.ECPair.fromPrivateKey(
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// master.derivePath("m/44'/5353'/0'/0/$vin").privateKey!,
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// network: hnsMainnetBitcoin);
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// txb.addInput(hash, index);
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// txb.sign(vin: vin, keyPair: keyPair);
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// } else {
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// print('vin is not an int');
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// print(input);
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// }
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// }
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for (var input in txData['inputs']) {
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final prevout = input['prevout'];
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final coin = input['coin'];
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final index = prevout['index'];
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final hash = prevout['hash'];
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final vin = coin['height'];
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print(input);
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bitcoin.ECPair keyPair = bitcoin.ECPair.fromPrivateKey(
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master.derivePath("m/44'/5353'/0'/0/$vin").privateKey!,
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network: hnsMainnetBitcoin,
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);
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txb.addInput(hash, index);
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txb.sign(vin: int.parse(vin.toString()), keyPair: keyPair);
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}
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for (var output in txData['outputs']) {
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txb.addOutput(output['address'], output['value']);
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}
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return txb.build().toHex();
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}
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