denet-node-server/model/utils.js

'use strict'
var CryptoJS = require("crypto-js");
require('dotenv').config()
const logger = require('./logger')
var moment = require('moment');
const chinaTime = require('china-time');

var { cryppt_config } = require('../config/config.js')

function toJson(code_, obj_, errMsg_) {
    var code = code_
    var data = obj_
    var errMsg = errMsg_
    let jopt = { code, data, errMsg };
    return JSON.stringify(jopt)
}

function decryptJson(message, key) {

}

/**
 * 
 * @param {*} crypt_key 密文
 * @param {*} message 待解密的内容 U2FsdGVkX18zHfDE3lO2yVxk2lMCEiwjrzYo1ZbHqfriFapZWXqLhczs9J0cN9EnvQR64GLRzYDgzMuAr9U1C0LZjA5mV4cSAZeBOrY8KNY09+BhTDetb2/43bIwiFR6
 */
function decryptPrivityKey(message) {

    // var encrypted = 'Zc4v3uJgPY+BVg/IrDLA4aIk9ko/UrgjAtBTLqymdMAvmqdp1GttRjkBgNNNTyxA+3ThbIGlM0INeeHGicYVbLea4ymkty8gd30rZXQ4yYQ='; //python is base64 ECB
    // var key = '0IPmaec1o9FQCqGN'//key used in Python
    // var iv = 'Zh4A7bOY2ksp9oIn'

    var encrypted = message; //python is base64 ECB
    var key = process.env.DENET_CRYPT_KEY //key used in Python
    var iv = process.env.DENET_CRYPT_IV
    if (!key || !iv) {
        logger.error('decryptPrivityKey key or iv is empty?');
        return null;
    }
    logger.log('encrypted=', encrypted);
    // logger.log('decryptPrivityKey key= iv=', key, iv);

    key = CryptoJS.enc.Utf8.parse(key);
    // var decrypted =  CryptoJS.AES.decrypt(encrypted, key, {mode:CryptoJS.mode.ECB});
    iv = CryptoJS.enc.Utf8.parse(iv)
    var decrypted = CryptoJS.AES.decrypt(encrypted, key, { iv: iv, mode: CryptoJS.mode.CBC });
    var de_pk = decrypted.toString(CryptoJS.enc.Utf8);
    // logger.log('decrypted==', de_pk);
    return de_pk
}


// 密钥
const SECRET_KEY = CryptoJS.enc.Utf8.parse(cryppt_config.WITHDRAW_KEY);
// 密钥偏移量
const SECRET_IV = CryptoJS.enc.Utf8.parse("68F37CFC40C330D9FAAC0A16D49C8AD5");
/**
 * 加密方法
 * @param data
 * @returns {string}
 */
function encrypt(data) {
    if (typeof data === "object") {
        try {
            data = JSON.stringify(data);
        } catch (error) {
            console.log("encrypt error:", error);
        }
    }
    const dataHex = CryptoJS.enc.Utf8.parse(data);
    const encrypted = CryptoJS.AES.encrypt(dataHex, SECRET_KEY, {
        mode: CryptoJS.mode.ECB,
        padding: CryptoJS.pad.Pkcs7
    });
    return encrypted.ciphertext.toString();
}

/**
* 解密方法
* @param data
* @returns {string}
*/
function decrypt(data) {
    // const key = CryptoJS.enc.Hex.parse(SECRET_KEY);
    const decrypt = CryptoJS.AES.decrypt(data, SECRET_KEY, {
        mode: CryptoJS.mode.ECB,
        padding: CryptoJS.pad.Pkcs7
    });
    return CryptoJS.enc.Utf8.stringify(decrypt).toString();
}

const CHAIN_NAME = {
    eth: 'eth',
    bsc_testnet: 'bsc testnet',
    bsc_mainnet: 'bsc'
}

const CHAIN_ID = {
    eth: '0x1',
    bsc_testnet: '0x61',
    bsc_mainnet: '0x38'
}

const CHAIN_ID_NAME = {
    97: 'bsc_testnet',
    56: 'bsc_mainnet',
}

function getChainName(key) {
    return CHAIN_NAME[key];
}


function getChainIdToName(key) {
    return CHAIN_ID_NAME[key];
}

function getChainId(key) {
    return CHAIN_ID[key];
}

function sleep(time) {
    return new Promise((resolve) => setTimeout(resolve, time));
}

function getTimestamp() {
    return new Date().getTime()
}

function getCurrentDate() {
    return chinaTime('YYYY-MM-DD HH:mm:ss');
}

function getTimestampToDate(tm)
{
        var now = new Date(tm),
        y = now.getFullYear(),
        m = now.getMonth() + 1,
        d = now.getDate();
    return y + '-' + (m < 10 ? '0' + m : m) + '-' + (d < 10 ? '0' + d : d) + 'T' + now.toTimeString().substr(0, 8)+'.000Z';
}

/**
 * @description 科学计数法转为string
 * @param {string, number} param
 */
function scientificNotationToString(param) {
    let strParam = String(param)
    let flag = /e/.test(strParam)
    if (!flag) return param

    // 指数符号 true: 正，false: 负
    let sysbol = true
    if (/e-/.test(strParam)) {
        sysbol = false
    }
    // 指数
    let index = Number(strParam.match(/\d+$/)[0])
    // 基数
    let basis = strParam.match(/^[\d\.]+/)[0].replace(/\./, '')

    if (sysbol) {
        return basis.padEnd(index + 1, 0)
    } else {
        return basis.padStart(index + basis.length, 0).replace(/^0/, '0.')
    }
}

module.exports = {
    toJson,
    decryptPrivityKey,
    getChainName,
    getChainId,
    CHAIN_NAME,
    CHAIN_ID,
    sleep,
    encrypt,
    decrypt,
    getTimestamp,
    getChainIdToName,
    getCurrentDate,
    scientificNotationToString,
    getTimestampToDate,
}