This page uses machine translation from English, which may contain errors or unclear language. For the most accurate information, please see the original English version. Some content may be in the original English due to frequent updates. Help us improve this page's translation by joining our effort on Crowdin. (Crowdin translation page, Contributing guide)

Multisig Account Key

AccountKeyWeightedMultiSig is an account key type containing a threshold and WeightedPublicKeys which contains a list consisting of a public key and its weight.

In order for a transaction to be valid for an account associated with AccountKeyWeightedMultiSig, the following conditions should be satisfied: _ The weighted sum of the signed public keys should be larger than the threshold. _ The invalid signature should not be included in the transaction. * The number of signed public keys should be less than the number of weightedPublicKeys.

Import the ethers and @kaiachain/ethers-ext packages to add kaia features on ethers.js

Define sender's address and private key and all weighted multi-sig private keys

Set up the provider with the specified kairos testnet URL. A provider in ethers is a read-only abstraction to access the blockchain data.

Also, you can change the provider URL from kairos to quicknode

Create 3 wallets with the weight multi-sig private keys and provider

Define a message to be signed and recovered

Sign the message with sender's wallet3

Recover the address from signed message using ethers.utils.verifyMessage

Recover the address from signed message using klay_recoverFromMessage

SignMsgWithMultiSigExample.js

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

const { Wallet } = require("@kaiachain/ethers-ext/v5");

const senderAddr = "0x82c6a8d94993d49cfd0c1d30f0f8caa65782cc7e";

const senderPriv = "0xa32c30608667d43be2d652bede413f12a649dd1be93440878e7f712d51a6768a";

const senderNewPriv1 = "0xa32c30608667d43be2d652bede413f12a649dd1be93440878e7f712d51a6768a";

const senderNewPriv2 = "0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8";

const senderNewPriv3 = "0xc9668ccd35fc20587aa37a48838b48ccc13cf14dd74c8999dd6a480212d5f7ac";

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

const wallet1 = new Wallet(senderAddr, senderNewPriv1, provider);

const wallet2 = new Wallet(senderAddr, senderNewPriv2, provider);

const wallet3 = new Wallet(senderAddr, senderNewPriv3, provider);

async function main() {

const msg = "hello";

const msghex = ethers.utils.hexlify(ethers.utils.toUtf8Bytes(msg));

const sig = await wallet3.signMessage(msg);

console.log({ senderAddr, msg, msghex, sig });

const addr1 = ethers.utils.verifyMessage(msg, sig);

console.log("recoveredAddr lib", addr1, addr1.toLowerCase() === wallet3.address.toLowerCase());

const addr2 = await provider.send("klay_recoverFromMessage", [senderAddr, msghex, sig, "latest"]);

console.log("recoveredAddr rpc", addr2, addr2.toLowerCase() === wallet3.address.toLowerCase());

}

main().catch(console.error);

output

❯ js SignMsgWithMultiSigExample.js

{

senderAddr: '0x82c6a8d94993d49cfd0c1d30f0f8caa65782cc7e',

msg: 'hello',

msghex: '0x68656c6c6f',

sig: '0x4bb3156dfd3349b974222b9ed754a3835802d920b63e8c07f41a75a174ce99d92a70d62e7a4b30d18599de61a882c59c0fd726883e3ce9955f8d5f60ce5b65211c'

}

recoveredAddr lib 0xe15Cd70A41dfb05e7214004d7D054801b2a2f06b true

recoveredAddr rpc 0xe15cd70a41dfb05e7214004d7d054801b2a2f06b true