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Legacy Account Key

導入 ethers 和 @kaiachain/ethers-ext 軟件包，在 ethers.js 上添加 kaia 功能

定義發件人的地址和私人密鑰

定義接收方的地址

使用指定的 Kairos 測試網 URL 設置提供程序。 以太坊中的提供者是訪問區塊鏈數據的只讀抽象。

此外，您還可以將提供商 URL 從 kairos 更改為 quicknode

用私鑰和提供者創建發件人錢包

使用 type.TxType.ValueTransfer 創建一個價值轉移事務，以便以後使用 klay_recoverFromTransaction 恢復：TxType.ValueTransfer"，以便以後使用 "klay_recoverFromTransaction "恢復它

用發件人的錢包簽署交易，"populateTransaction "方法為交易對象添加更多參數，如gas、nonce...

將簽署的交易發送至 kaia 網絡

等待交易完成並打印收據

使用 klay_recoverFromMessage 從已簽署的事務中恢復地址

SignTxWithLegacyExample.js

const { ethers } = require("ethers");

const { Wallet, TxType } = require("@kaiachain/ethers-ext/v6");

const senderAddr = "0xb2ba72e1f84b7b8cb15487a2bf20328f2cf40c25";

const senderPriv = "0xebceaca693ea3740231be94f38af6090d3aded336725d26a09b7d14e8e485e1e";

const recieverAddr = "0xc40b6909eb7085590e1c26cb3becc25368e249e9";

const provider = new ethers.JsonRpcProvider("https://public-en-kairos.node.kaia.io");

const wallet = new Wallet(senderPriv, provider);

async function main() {

const tx = {

// for should not be called by a legacy transaction for calling klay_recoverFromTransaction

type: TxType.ValueTransfer,

from: senderAddr,

to: recieverAddr,

value: 0,

};

const populatedTx = await wallet.populateTransaction(tx);

const rawTx = await wallet.signTransaction(populatedTx);

console.log("rawTx", rawTx);

const sentTx = await wallet.sendTransaction(tx);

console.log("sentTx", sentTx.hash);

const receipt = await sentTx.wait();

console.log("receipt", receipt);

const addr = await provider.send("klay_recoverFromTransaction", [rawTx, "latest"]);

console.log("recoveredAddr rpc", addr, addr.toLowerCase() === senderAddr.toLowerCase());

}

main().catch(console.error);

output

❯ js SignTxWithLegacyExample.js

rawTx 0x08f87e05850ba43b740082cd1494c40b6909eb7085590e1c26cb3becc25368e249e98094b2ba72e1f84b7b8cb15487a2bf20328f2cf40c25f847f8458207f5a070d2c5f2dd52d6a3b7bba65594b2c875b8ce0473e16b06b43d5c2ec9ebfcd467a048af2fc51f75961a9cebfb1685b12d99db143bbd42a76f9c50970b807e1010b9

sentTx 0xecb117338d7a0e7e9444886ebdab5d0e14fd1b02fa476fee839a2fc3b105f391

receipt {

to: '0xC40B6909EB7085590E1c26Cb3beCC25368e249E9',

from: '0xb2ba72e1f84b7B8Cb15487A2bf20328F2cF40c25',

contractAddress: null,

transactionIndex: 1,

gasUsed: BigNumber { _hex: '0x5208', _isBigNumber: true },

logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',

blockHash: '0x7eae10aa2fcd3c42ac1705b63ad025f972a222bb71d65feeb0000d92c2e73732',

transactionHash: '0xecb117338d7a0e7e9444886ebdab5d0e14fd1b02fa476fee839a2fc3b105f391',

logs: [],

blockNumber: 152256170,

confirmations: 3,

cumulativeGasUsed: BigNumber { _hex: '0x029636', _isBigNumber: true },

effectiveGasPrice: BigNumber { _hex: '0x05d21dba00', _isBigNumber: true },

status: 1,

type: 0,

byzantium: true

}

recoveredAddr rpc 0xb2ba72e1f84b7b8cb15487a2bf20328f2cf40c25 true