Dekey v2 wallet core

Currently (2023.11.23) this package...

• is written in Javascript
• uses KMS for encryption and decryption
• responsible for proceeding the creation/recover of wallets
• responsible for storing users' private data to the private area

Installation

# using npm
$ npm i dekey-v2-wallet-core

# using yarn
$ yarn add dekey-v2-wallet-core

---

Usage

• YOU MUST LOGIN TO GOOGLE FIRST in order to get an access token and an ID token.

• Also, you must use Dekey v2 OAuth client for Google login.

Getting the keyshare of the user

// Example of using getKeyshare()

import { Dekey, createDekeyInstance, IDekeyConfig, DekeyOutput } from 'dekey-v2-wallet-core';

const DEKEY_CONFIG: IDekeyConfig = {
  aws: {
    kmsKeyId: import.meta.env.VITE_AWS_KMS_KEY_ID,
    region: import.meta.env.VITE_AWS_REGION,
    identityPoolId: import.meta.env.VITE_AWS_COGNITO_IDENTITY_POOL_ID,
    userPoolId: import.meta.env.VITE_AWS_COGNITO_USER_POOL_ID,
    tokenProvider: import.meta.env.VITE_AWS_TOKEN_PROVIDER,
    credentialProvider: import.meta.env.VITE_AWS_CREDENTIAL_PROVIDER,
    roleArn: import.meta.env.VITE_AWS_ROLE_ARN,
    cognitoSyncDataset: import.meta.env.VITE_AWS_COGNITO_SYNC_DATASET,
  },
  aesSource: '',
  workerFileBasePath,
  appServer: {
    appServerAddressProtocol: import.meta.env.VITE_APP_SERVER_ADDRESS_PROTOCOL,
    appServerAddress: import.meta.env.VITE_APP_SERVER_ADDRESS,
  },
  mpc: {
    enableMPCTLS: import.meta.env.VITE_APP_MPC_TLS,
  }
};

const idToken = 'fhB7d...nql', // Google ID token
const accessToken = '9ejsk...fhk', // Google access token

const payloadOfIdToken = JSON.parse(atob(idToken.split('.')[1]));

// Different user is logged in so the data on local stroage is needed to be cleared.
if (userId !== getUserIdFromLocal()) {
  // Different user is logged in so the data on local stroage is needed to be cleared.
  clearLocalData();
}

// If there is a wallet address stored in Local storage already
const walletAddress = getWalletAddressFromLocal();
if (walletAddress) {
  return {
    walletAddress
  };
}

const dekey = Dekey.createDekeyInstance(dekeyConfig);

const result = await dekey.getKeyshare({
  idToken,
  accessToken,
  setProcess: (completed) => {
    console.log(completed)
  } // this is optional
})

const { sid: walletAddress } = result;
return {
  walletAddress
};

• This method will proceed KG/RG and store the keyshare backup and the private key. It also saves the keyshare(=pvenc) on the browser local storage.

• workerFileBasePath must point where mpc_worker.mjs is located.

Calling sign API

import { Dekey } from 'dekey-v2-wallet-core';

const dekey = Dekey.createDekeyInstance(dekeyConfig);
const { r, s, vsource } = await dekey.sign(
  messageHash,
  setProcess: (completed) => {
    console.log(completed)
  }
)