tool.js

const CryptoJS = require('./crypto-js');
const encode = (str) => {
    const s1 = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(str));
    const x = s1.indexOf('=');
    const s2 = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(Math.random().toString())).slice(0, 16);
    if (x !== -1) {
        return s2 + s1.slice(0, x).split('').reverse().join('') + s1.slice(x);
    } else {
        return s2 + s1.split('').reverse().join('');
    }
};
const cal = (str) => {
    let x = 0;
    for (let i = 0; i < str.length; i++) {
        x += str.charCodeAt(i) % 10;
    }
    return x << 8;
};
const getEncLink = (str) => {
    const e = Math.random().toString(10).substring(2);
    const i = cal(str + '@' + e);
    return encode(str) + '@' + e + '@' + i;
};
const getDecData = (str) => {
    str = str.slice(16);
    const x = str.indexOf('=');
    if (x !== -1) {
        return CryptoJS.enc.Utf8.stringify(
            CryptoJS.enc.Base64.parse(str.slice(0, x).split('').reverse().join('') + '=')
        );
    } else {
        return CryptoJS.enc.Utf8.stringify(CryptoJS.enc.Base64.parse(str.split('').reverse().join('')));
    }
};
const toolBase64 = (str) => {
    return CryptoJS.AES.encrypt(CryptoJS.enc.Utf8.parse(str), CryptoJS.enc.Utf8.parse('H0GM7TGBw193GYf8'), {
        iv: CryptoJS.enc.Hex.parse('0000000000000000'),
        mode: CryptoJS.mode.CBC,
        padding: CryptoJS.pad.Pkcs7,
    }).ciphertext.toString(CryptoJS.enc.Base64);
};
const getAcceptPatch = (hostPrefix, str) => {
    const a = hostPrefix.charAt(str.charCodeAt(0) % hostPrefix.length);
    const b = hostPrefix.charAt(str.charCodeAt(str.length - 1) % hostPrefix.length);
    return toolBase64(a + str + b);
};