Algorithm Comparison

When securing passwords, hash functions are typically preferred over symmetric encryption algorithms. Hash algorithms like SHA-256 are more commonly recommended for password protection due to their one-way nature (irreversible), unlike symmetric encryption which can be reversed.

Security Analysis:

AES Encryption: Security relies primarily on key confidentiality and length. Longer keys provide enhanced security. Currently, AES-256 is considered highly secure.

SHA-256 Hashing: This robust hashing algorithm provides strong collision resistance, making it extremely unlikely for different inputs to produce identical hash values. However, evolvign collision attack methods may impact its security.

MD5: Generates 128-bit (16-byte) hash values, typically represented as 32 hexadecimal characters. While MD5 was once widely used, it's no longer recommended for high-security applications due to collision vulnerabilities and weak resistance.

Frontend Cryptography with crypto-js

The crypto-js library serves as a pure JavaScript cryptographic toolkit, offering various common encryption algorithms including AES, DES, Triple DES, Rabbit, MD5, SHA-1, and SHA-256. It aims to provide secure cryptographic implementations within browsers.

Key Features and Usage:

1. Multiple Algorithm Support: Supports various symmetric and hash algorithms, creating a comprehensive cryptography toolkit.
2. User-Friendly API: Provieds straightforward interfaces, making cryptographic operations accessible in JavaScript environments.
3. Modular Design: Allows selective module imports to minimize library size.
4. Standard Compatibility: API design aligns with Web Crypto API standards for consistent cross-environment usage.
5. Easy Integration: Pure JavaScript implementation enables seamless browser embedding and Node.js compatibility.

Here's a basic example demonstrating AES encryption using Crypto-JS:

// Import CryptoJS library
const CryptoJS = require("crypto-js");

// Define key and plaintext
const secretKey = CryptoJS.enc.Utf8.parse("1234567890123456");
const plainText = "Hello, Crypto-JS!";

// Perform AES encryption
const encryptedData = CryptoJS.AES.encrypt(plainText, secretKey, {
    mode: CryptoJS.mode.ECB,
    padding: CryptoJS.pad.Pkcs7
});

// Output encrypted result
console.log("Encrypted: " + encryptedData.toString());

Configuring Anti-Crawling in vue.config.js

{
   from: path.resolve(__dirname, './public/robots.txt'),
   to: './'
}

While this prevents crawling, source code remains accessible through debugging. To prevent debugging:

Developer Tool Prevention

Monitor developer tool activation and close the page using window.close() when detected.

1. Keyboard Shortcut Monitoring: Listen for F12, Ctrl+Shift+I (Windows), right-click context menu, and Ctrl+S to prevent local saves and overrides.

<script>
    document.addEventListener('keydown', function(event) {
        if (event.key === 'F12') {
            window.close();
            window.location = 'about:blank';
        } else if (event.ctrlKey && event.shiftKey && event.key === 'I') {
            window.close();
            window.location = 'about:blank';
        } else if (event.ctrlKey && event.key === 's') {
            event.preventDefault();
            window.close();
            window.location = 'about:blank';
        }
    });

    document.addEventListener('contextmenu', function() {
        window.close();
        window.location = 'about:blank';
    });
</script>

2. Window Size Change Detection

<script>
    const initialHeight = window.innerHeight;
    const initialWidth = window.innerWidth;
    
    window.addEventListener('resize', function() {
        if (initialHeight !== window.innerHeight || initialWidth !== window.innerWidth) {
            window.close();
            window.location = 'about:blank';
        }
    });
</script>

3. Console Detection Method

<script>
    function handleConsoleOpen() {
        window.close();
        window.location = 'about:blank';
        return '';
    }

    (function() {
        const testObject = /./;
        console.log(testObject);
        
        testObject.toString = function() {
            handleConsoleOpen();
        };
    })();
</script>