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Role-based Account Key

AccountKeyRoleBased 表示基於角色的密鑰。 如果賬戶有一個** AccountKeyRoleBased對象，且交易類型為除賬戶更新外的**，那麼驗證過程將根據每個角色進行，如下所示：

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。

從他們的密鑰對中加載不同的基於角色的證書

獲取第一個證書地址

定義要簽署的任何信息

設置區塊編號為 kaia 網絡中的最新區塊

使用所有 3 個基於角色的憑據依次簽署信息，並以字符串形式輸出簽名

從 3 個報文回覆中恢復地址，並與原始發件人地址進行比較

關閉 Web3j 實例

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