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基于角色的账户密钥

AccountKeyRoleBased 表示基于角色的密钥。 如果账户有一个基于账户密钥角色的对象，且交易类型为除账户更新外的，那么验证过程将根据每个角色进行，如下所示：

从 Web3j 和 kaia 库（web3j-ext）中导入必要的类。

使用指定的 BAOBAB_URL 创建 Web3j 实例

此外，您还可以更改默认提供商。 例如，使用alchemy提供商。

用私钥创建 3 个不同的**凭证

燃气价格和gas 限值设置

从网络中获取chain ID

获取发件人地址的nonce值

生成新账户密钥及其权重，用于账户更新

将生成的权重账户密钥合并为一个列表

为每个键指定角色，可能的角色有交易、更新、缴费人。

将生成的角色关键字合并到列表中

将交易类型设为 ACCOUNT_UPDATE

创建原始交易用于账户更新

签署交易

将签署的交易发送至 kaia 网络

等待交易完成并获取交易收据

关闭 Web3j 实例

解码原始交易以获取交易类型

AccountUpdateWithRoleBasedExample.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.AccountKey;

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

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

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 AccountUpdateWithRoleBasedExample {

public static void run() throws Exception {

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

KlayCredentials credential1 = KlayCredentials.create(keySample.ROLEBASED_KEY_transactionkey, keySample.ROLEBASED_KEY_address);

KlayCredentials credential2 = KlayCredentials.create(keySample.ROLEBASED_KEY_updatekey, keySample.ROLEBASED_KEY_address);

KlayCredentials credential3 = KlayCredentials.create(keySample.ROLEBASED_KEY_feepayer, keySample.ROLEBASED_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();

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

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

AccountKeyPublic accountTransactionkey = AccountKeyPublic.create(newPubkey1);

AccountKeyPublic accountUpdateKey = AccountKeyPublic.create(newPubkey2);

AccountKeyPublic accountFeePayerKey = AccountKeyPublic.create(newPubkey3);

List<AccountKey> accountKeys = List.of(accountTransactionkey, accountUpdateKey, accountFeePayerKey);

AccountKeyRoleBased accountkey = AccountKeyRoleBased.create(accountKeys);

TxType.Type type = Type.ACCOUNT_UPDATE;

KlayRawTransaction raw = KlayRawTransaction.createTransaction(

type,

nonce,

GAS_PRICE,

GAS_LIMIT,

from,

accountkey);

byte[] 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 AccountUpdateWithRoleBasedExample.java

TxHash :

0xefdaed1bdfdaa26b7f4512d2d3cf413735e3ed56d3510a7a9101d2cee1d0181c

Receipt from eth_getTransactionReceipt :

TransactionReceipt{transactionHash='0xefdaed1bdfdaa26b7f4512d2d3cf413735e3ed56d3510a7a9101d2cee1d0181c', transactionIndex='0x1', blockHash='0xaff11b719196dc64d161fabce82d74f0dc91f8d6d9aa0bcbb721f9006d0029f4', blockNumber='0x90e5932', cumulativeGasUsed='0x377d6', gasUsed='0x13c68', contractAddress='null', root='null', status='0x1', from='0x5bd2fb3c21564c023a4a735935a2b7a238c4ccea', to='0x5bd2fb3c21564c023a4a735935a2b7a238c4ccea', logs=[], logsBloom='0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', revertReason='null', type='0x0', effectiveGasPrice='0x5d21dba00'}

Receipt from klay_getTransactionReceipt :

class TransactionReceipt {

blockHash: 0xaff11b719196dc64d161fabce82d74f0dc91f8d6d9aa0bcbb721f9006d0029f4

blockNumber: 0x90e5932

codeFormat: null

contractAddress: null

feePayer: null

feePayerSignatures: []

feeRatio: null

from: 0x5bd2fb3c21564c023a4a735935a2b7a238c4ccea

gas: 0x66919e

effectiveGasPrice: 0x5d21dba00

gasPrice: 0xba43b7400

gasUsed: 0x13c68

humanReadable: null

key: 0x05f86ca302a103f26489914098c5da51f0f646e3000da4d6197217df082b4f7ce1530f0a0cbf2aa302a10263021199702b9fefca617bdcb2a9ed4a810dfa8d270d4e804a1e778450e63ec3a302a103dc9dccbd788c00fa98f7f4082f2f714e799bc0c29d63f04d48b54fe6250453cd

input: null

logs: []

logsBloom: 0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

nonce: 0x3e

senderTxHash: 0xefdaed1bdfdaa26b7f4512d2d3cf413735e3ed56d3510a7a9101d2cee1d0181c

signature: []

status: 0x1

txError: null

to: null

transactionHash: 0xefdaed1bdfdaa26b7f4512d2d3cf413735e3ed56d3510a7a9101d2cee1d0181c

transactionIndex: 0x1

type: TxTypeAccountUpdate

typeInt: 32

value: null

}

TxType : ACCOUNT_UPDATE