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Role-based Account Key

AccountKeyRoleBased 表示基于角色的密钥。 如果账户有一个** AccountKeyRoleBased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。

从他们的密钥对中加载不同的基于角色的证书

获取第一个证书地址

定义要签署的任何信息

设置区块编号为 kaia 网络中的最新区块

使用所有 3 个基于角色的凭据依次签署信息，并以字符串形式输出签名

从 3 个报文回复中恢复地址，并与原始发件人地址进行比较

关闭 Web3j 实例

SignMsgWithRoleBasedExample.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 org.web3j.crypto.KlayCredentials;

import org.web3j.crypto.KlaySignatureData;

import org.web3j.crypto.Sign.SignatureData;

import org.web3j.protocol.http.HttpService;

import org.web3j.protocol.kaia.Web3j;

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

/**

*

*/

public class SignMsgWithRoleBasedExample implements keySample {

/**

*

*/

public static void run() throws Exception {

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

KlayCredentials credentials1 = KlayCredentials.create(keySample.ROLEBASED_KEY_transactionkey,

keySample.ROLEBASED_KEY_address);

KlayCredentials credentials2 = KlayCredentials.create(keySample.ROLEBASED_KEY_updatekey,

keySample.ROLEBASED_KEY_address);

KlayCredentials credentials3 = KlayCredentials.create(keySample.ROLEBASED_KEY_feepayer,

keySample.ROLEBASED_KEY_address);

String from = credentials1.getAddress();

String message = "0xdeadbeef";

String blockNumber = "latest";

SignatureData signature1 = KlaySignatureData.signPrefixedMessage(message, credentials1);

String result1 = KlaySignatureData.getSignatureString(signature1);

SignatureData signature2 = KlaySignatureData.signPrefixedMessage(message, credentials2);

String result2 = KlaySignatureData.getSignatureString(signature2);

SignatureData signature3 = KlaySignatureData.signPrefixedMessage(message, credentials3);

String result3 = KlaySignatureData.getSignatureString(signature3);

KlayRecoverFromMessageResponse response1 = web3j

.klayRecoverFromMessage(from, message, result1, blockNumber)

.send();

KlayRecoverFromMessageResponse response2 = web3j

.klayRecoverFromMessage(from, message, result2, blockNumber)

.send();

KlayRecoverFromMessageResponse response3 = web3j

.klayRecoverFromMessage(from, message, result3, blockNumber)

.send();

System.out.println("Original address : " + from);

System.out.println("Result address for transaction key : " + response1.getResult());

System.out.println("Result address for update key : " + response2.getResult());

System.out.println("Result address for feepayer key : " + response3.getResult());

web3j.shutdown();

}

}

output

❯ java SignMsgWithRoleBasedExample.java

Original address : 0x5bd2fb3c21564c023a4a735935a2b7a238c4ccea

Result address for transaction key : 0xe15cd70a41dfb05e7214004d7d054801b2a2f06b

Result address for update key : 0x5bd2fb3c21564c023a4a735935a2b7a238c4ccea

Result address for feepayer key : 0xa2a8854b1802d8cd5de631e690817c253d6a9153