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Multisig Account Key

AccountKeyWeightedMultiSig 是一種賬戶密鑰類型，包含一個閾值和加權公鑰（WeightedPublicKeys），後者包含一個由公鑰及其權重組成的列表。

要使與 AccountKeyWeightedMultiSig 關聯的賬戶的交易有效，必須滿足以下條件： 已簽名公鑰的加權和應大於閾值。 _ 無效簽名不應包含在交易中。 * 已簽名公鑰的數量應少於加權公鑰的數量。

從 Web3j 和 kaia 庫（web3j-ext）中導入必要的類。

使用指定的 BAOBAB_URL 創建 Web3j 實例

此外，您還可以更改默認提供商。 例如，使用alchemy提供商。

用私人密鑰創建 3 個不同的憑證

燃氣價格和gas 限值設置

從網絡中獲取chain ID

獲取發件人地址的nonce值

為賬戶更新生成新的account keys及其權重

將生成的weighted account keys合併為一個列表

將交易類型設為 ACCOUNT_UPDATE

創建raw transaction用於賬戶更新

簽署交易

將簽署的交易發送至 kaia 網絡

等待交易完成並獲取交易收據

關閉 Web3j 實例

解碼原始交易以獲取交易類型

AccountUpdateWithMultiSigExample.java

package org.web3j.example.accountKey;

import org.web3j.tx.response.PollingTransactionReceiptProcessor;

import org.web3j.tx.response.TransactionReceiptProcessor;

import org.web3j.example.keySample;

import java.io.IOException;

import java.math.BigInteger;

import java.util.List;

import org.web3j.crypto.KlayCredentials;

import org.web3j.crypto.KlayRawTransaction;

import org.web3j.crypto.KlayTransactionEncoder;

import org.web3j.crypto.transaction.account.AccountKeyPublic;

import org.web3j.crypto.transaction.account.AccountKeyWeightedMultiSig;

import org.web3j.crypto.transaction.account.AccountKeyWeightedMultiSig.WeightedPublicKey;

import org.web3j.crypto.transaction.type.TxType;

import org.web3j.crypto.transaction.type.TxTypeAccountUpdate;

import org.web3j.crypto.transaction.type.TxType.Type;

import org.web3j.protocol.core.DefaultBlockParameterName;

import org.web3j.protocol.core.methods.response.EthChainId;

import org.web3j.protocol.core.methods.response.EthSendTransaction;

import org.web3j.protocol.kaia.Web3j;

import org.web3j.protocol.http.HttpService;

import org.web3j.utils.Numeric;

import org.web3j.protocol.kaia.core.method.response.TransactionReceipt;

public class AccountUpdateWithMultiSigExample {

public static void run() throws Exception {

Web3j web3j = Web3j.build(new HttpService(keySample.BAOBAB_URL));

KlayCredentials credential1 = KlayCredentials.create(keySample.MULTI_KEY_privkey1, keySample.MULTI_KEY_address);

KlayCredentials credential2 = KlayCredentials.create(keySample.MULTI_KEY_privkey2, keySample.MULTI_KEY_address);

KlayCredentials credential3 = KlayCredentials.create(keySample.MULTI_KEY_privkey3, keySample.MULTI_KEY_address);

BigInteger GAS_PRICE = BigInteger.valueOf(50000000000L);

BigInteger GAS_LIMIT = BigInteger.valueOf(6721950);

String from = credential1.getAddress();

EthChainId EthchainId = web3j.ethChainId().send();

long chainId = EthchainId.getChainId().longValue();

BigInteger nonce = web3j.ethGetTransactionCount(from, DefaultBlockParameterName.LATEST).send()

.getTransactionCount();

BigInteger newPubkey1 = credential1.getEcKeyPair().getPublicKey();

WeightedPublicKey weightedAccountKey1 = WeightedPublicKey.create(BigInteger.ONE,

AccountKeyPublic.create(newPubkey1));

BigInteger newPubkey2 = credential2.getEcKeyPair().getPublicKey();

WeightedPublicKey weightedAccountKey2 = WeightedPublicKey.create(BigInteger.ONE,

AccountKeyPublic.create(newPubkey2));

BigInteger newPubkey3 = credential3.getEcKeyPair().getPublicKey();

WeightedPublicKey weightedAccountKey3 = WeightedPublicKey.create(BigInteger.ONE,

AccountKeyPublic.create(newPubkey3));

// make list with weightedAccountKey1, weightedAccountKey2, weightedAccountKey3

List<WeightedPublicKey> weightedAccountKeyList = List.of(weightedAccountKey1, weightedAccountKey2,

weightedAccountKey3);

AccountKeyWeightedMultiSig accountkey = AccountKeyWeightedMultiSig.create(BigInteger.TWO,

weightedAccountKeyList);

TxType.Type type = Type.ACCOUNT_UPDATE;

KlayRawTransaction raw = KlayRawTransaction.createTransaction(

type,

nonce,

GAS_PRICE,

GAS_LIMIT,

from,

accountkey);

byte[] signedMessage = KlayTransactionEncoder.signMessage(raw, chainId, credential1);

signedMessage = KlayTransactionEncoder.signMessage(raw, chainId, credential2);

String hexValue = Numeric.toHexString(signedMessage);

EthSendTransaction transactionResponse = web3j.ethSendRawTransaction(hexValue).send();

System.out.println("TxHash : \n " + transactionResponse.getResult());

String txHash = transactionResponse.getResult();

int DEFAULT_POLLING_ATTEMPTS_PER_TX_HASH = 40;

int DEFAULT_BLOCK_TIME = 1 * 1000;

long DEFAULT_POLLING_FREQUENCY = DEFAULT_BLOCK_TIME;

TransactionReceiptProcessor transactionReceiptProcessor = new PollingTransactionReceiptProcessor(web3j,

DEFAULT_POLLING_FREQUENCY, DEFAULT_POLLING_ATTEMPTS_PER_TX_HASH);

org.web3j.protocol.core.methods.response.TransactionReceipt ethReceipt = transactionReceiptProcessor

.waitForTransactionReceipt(txHash);

System.out.println("Receipt from eth_getTransactionReceipt : \n" + ethReceipt);

TransactionReceipt receipt = web3j.klayGetTransactionReceipt(txHash).send().getResult();

System.out.println("Receipt from klay_getTransactionReceipt : \n" + receipt);

web3j.shutdown();

TxTypeAccountUpdate rawTransaction = TxTypeAccountUpdate.decodeFromRawTransaction(signedMessage);

System.out.println("TxType : " + rawTransaction.getKlayType());

}

}

output

❯ java AccountUpdateWithMultiSigExample.java

TxHash :

0xfffe87a710a452a8457f80a8a5bdce48e2e50cac53663dbc72cfc104926fd442

Receipt from eth_getTransactionReceipt :

TransactionReceipt{transactionHash='0xfffe87a710a452a8457f80a8a5bdce48e2e50cac53663dbc72cfc104926fd442', transactionIndex='0x3', blockHash='0x4e8c4f1b795ca48c9a60788786481b72df1e2eb16d83ffc9d89e1e2708962378', blockNumber='0x90e5807', cumulativeGasUsed='0x983cc', gasUsed='0x17700', contractAddress='null', root='null', status='0x1', from='0x82c6a8d94993d49cfd0c1d30f0f8caa65782cc7e', to='0x82c6a8d94993d49cfd0c1d30f0f8caa65782cc7e', logs=[], logsBloom='0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', revertReason='null', type='0x0', effectiveGasPrice='0x5d21dba00'}

Receipt from klay_getTransactionReceipt :

class TransactionReceipt {

blockHash: 0x4e8c4f1b795ca48c9a60788786481b72df1e2eb16d83ffc9d89e1e2708962378

blockNumber: 0x90e5807

codeFormat: null

contractAddress: null

feePayer: null

feePayerSignatures: []

feeRatio: null

from: 0x82c6a8d94993d49cfd0c1d30f0f8caa65782cc7e

gas: 0x66919e

effectiveGasPrice: 0x5d21dba00

gasPrice: 0xba43b7400

gasUsed: 0x17700

humanReadable: null

key: 0x04f86f02f86ce301a1021473839f05083617d532325ce8aa40edffb2bc79f1ce17c77cc41f92f027dd82e301a103dc9dccbd788c00fa98f7f4082f2f714e799bc0c29d63f04d48b54fe6250453cde301a103f26489914098c5da51f0f646e3000da4d6197217df082b4f7ce1530f0a0cbf2a

input: null

logs: []

logsBloom: 0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

nonce: 0x73

senderTxHash: 0xfffe87a710a452a8457f80a8a5bdce48e2e50cac53663dbc72cfc104926fd442

signature: []

status: 0x1

txError: null

to: null

transactionHash: 0xfffe87a710a452a8457f80a8a5bdce48e2e50cac53663dbc72cfc104926fd442

transactionIndex: 0x3

type: TxTypeAccountUpdate

typeInt: 32

value: null

}

TxType : ACCOUNT_UPDATE