Cookie Consent by Free Privacy Policy Generator ๐Ÿ“Œ Understanding and Implementing Advanced Encryption Standard (AES) in Node.js with TypeScript

๐Ÿ  Team IT Security News ist eine Online-Plattform, die sich auf die Bereitstellung von Informationen,alle 15 Minuten neuste Nachrichten, Bildungsressourcen und Dienstleistungen rund um das Thema IT-Sicherheit spezialisiert hat.
Ob es sich um aktuelle Nachrichten, Fachartikel, Blogbeitrรคge, Webinare, Tutorials, oder Tipps & Tricks handelt, bietet seinen Nutzern einen umfassenden รœberblick รผber die wichtigsten Aspekte der IT-Sicherheit in einer sich stรคndig verรคndernden digitalen Welt.

16.12.2023 - TIP: Wer den Cookie Consent Banner akzeptiert, kann z.B. von Englisch nach Deutsch รผbersetzen, erst Englisch auswรคhlen dann wieder Deutsch!

Google Android Playstore Download Button fรผr Team IT Security

๐Ÿ“š Understanding and Implementing Advanced Encryption Standard (AES) in Node.js with TypeScript

๐Ÿ’ก Newskategorie: Programmierung
๐Ÿ”— Quelle:

Hello, my dear followers!

If this is the first time you've visited my page, a warm welcome to you. My name is Jamshid, and I'm thrilled to share a topic that's not only fascinating but also incredibly important in our digital world: the Advanced Encryption Standard, commonly known as AES.

This encryption algorithm has been a personal favorite of mine for several years. Its robustness and versatility have made it a go-to choice in various applications, from securing personal data to protecting global communications.

In this post, I'll be diving deep into AES. We'll explore how it works, why it's used so extensively, and discuss its various use cases. I'll also shed light on its advantages and disadvantages, giving you a comprehensive understanding of why AES stands out in the world of encryption.

Whether you're a tech enthusiast, a privacy advocate, or just curious about the digital security landscape, this series will provide valuable insights into one of the most critical aspects of data protection.

AES (Advanced Encryption Standard) is a widely used symmetric encryption algorithm that provides strong security. It's used in a variety of applications, both in personal and enterprise environments. Here's an overview of its general use cases and its role in server development.

General Use Cases of AES:

  1. Data Encryption: AES is commonly used to encrypt sensitive data, such as personal information, financial records, and confidential documents.

  2. Secure Communications: It's used in protocols like SSL/TLS for securing internet traffic, ensuring that data transferred between servers and clients remains private.

  3. File Encryption: AES can encrypt files and entire filesystems, protecting data at rest from unauthorized access.

  4. VPN (Virtual Private Networks): AES is often the encryption standard of choice for VPNs, securing data transmitted over public networks.

  5. Wireless Security: It's used in WPA2 (Wi-Fi Protected Access 2) for securing wireless networks.

  6. Database Security: Databases can leverage AES to encrypt sensitive data stored within.

AES in Server Development:

  1. Data Protection: In server development, AES is essential for protecting data both in transit and at rest. Servers often handle sensitive data that requires encryption to meet privacy standards and regulatory requirements.

  2. Secure Communication: For any server that communicates over the internet, using AES within SSL/TLS protocols ensures that the data exchanged with clients is secure.

  3. API Security: When developing APIs, especially for financial or personal data transactions, AES can be used to encrypt the payload.

Is It Always Good to Use AES in Server Development?

Yes and No. While AES is a robust encryption standard, whether it should be used in a specific scenario depends on the use case, performance requirements, and compliance needs. In most cases, using AES adds a strong layer of security, but there are considerations to be mindful of.

Pros and Cons of Using AES in Server Development:


  1. Strong Security: AES is considered secure against most cryptographic attacks.
  2. Industry Standard: Widely accepted and used, meeting various compliance requirements.
  3. Versatile: Suitable for a wide range of applications, from encrypting data in transit to securing stored files.
  4. Performance: Generally offers good performance, especially with hardware support.


  1. Key Management: Secure key management is crucial. Poorly managed keys can negate the benefits of encryption.
  2. Overhead: Encryption and decryption add computational overhead, which might impact performance in resource-constrained environments.
  3. Complexity: Implementing encryption correctly requires expertise; incorrect implementation can lead to vulnerabilities.
  4. Encryption Only: AES provides confidentiality but not authentication or integrity. Additional mechanisms (like HMAC or using AES in GCM mode) are needed for these.

Type Of AES

AES (Advanced Encryption Standard) is a symmetric encryption algorithm that is widely used across the globe. It has several modes of operation, each designed to serve a specific purpose and to meet different security requirements. Below is a list of some common AES modes, along with their key differences:

  1. ECB (Electronic Codebook)

    • Description: Simplest mode, where each block of plaintext is encrypted independently.
    • Key Differences: Vulnerable to pattern attacks since identical plaintext blocks result in identical ciphertext blocks. Not recommended for encrypting multiple blocks of data that may contain repetitions.
  2. CBC (Cipher Block Chaining)

    • Description: Each block of plaintext is XORed with the previous ciphertext block before encryption. Requires an Initialization Vector (IV) for the first block.
    • Key Differences: More secure than ECB as it introduces dependencies between blocks. However, it's susceptible to block reordering attacks and needs padding for the last block if the data isn't a multiple of the block size.
  3. CFB (Cipher Feedback)

    • Description: Converts AES into a stream cipher. The previous ciphertext block is encrypted and then XORed with the plaintext to produce the next block of ciphertext.
    • Key Differences: Suitable for encrypting data streams of arbitrary length. However, like CBC, it requires an IV and is sensitive to bit errors in transmission.
  4. OFB (Output Feedback)

    • Description: Similar to CFB, but encrypts the previous output instead of the previous ciphertext. Also, turns AES into a stream cipher.
    • Key Differences: Resilient to transmission errors (a bit error in ciphertext only affects the corresponding bit in plaintext). It can be used in applications where error propagation is a concern.
  5. CTR (Counter)

    • Description: Uses a counter value that is encrypted and then XORed with the plaintext to produce the ciphertext. Each block uses a different counter value.
    • Key Differences: Highly parallelizable and can pre-compute encrypted counters. Suitable for high-speed requirements and is resilient to bit errors in transmission.
  6. GCM (Galois/Counter Mode)

    • Description: A mode based on CTR mode for encryption, but also provides data integrity/authentication using a technique called GMAC (Galois Message Authentication Code).
    • Key Differences: Offers both confidentiality and integrity. It's widely used in network protocols like TLS due to its efficiency and security.
  7. CCM (Counter with CBC-MAC)

    • Description: Combines CTR mode for encryption with CBC-MAC for authentication.
    • Key Differences: Provides both encryption and authentication but has stricter requirements on the size of the input data and the nonce.

Known attacks:

Read more in wiki: Side-channel attacks

Let's take a look at AES encrption and dectyption with a simple example

Setting Up the Environment

Before diving into the code, make sure you have Node.js installed. You can download it from Node.js official website.

  1. Initialize a new Node.js project:
   mkdir aes-nodejs-typescript
   cd aes-nodejs-typescript
   npm init -y
  1. Install TypeScript and necessary types:
   npm install typescript @types/node --save-dev
  1. Create a tsconfig.json file for TypeScript configuration:
   npx tsc --init

Modify the tsconfig.json as needed for your project.

  1. Install crypto module:

Node.js has a built-in module called crypto which we will use for AES encryption. So no need separate installation.

   npm install crypto // install if your node can`t see crypto module

Implementing AES in TypeScript

Now, let's implement AES encryption and decryption in TypeScript.

  1. Create a file aes.ts:
   import { createCipheriv, createDecipheriv, randomBytes, scryptSync } from 'crypto';

   const algorithm = 'aes-256-cbc';

   // Generate a secure, random key
   const key = randomBytes(32);

   // Generate an initialization vector
   const iv = randomBytes(16);

   export function encrypt(text: string): string {
       const cipher = createCipheriv(algorithm, key, iv);
       let encrypted = cipher.update(text, 'utf8', 'hex');
       encrypted +='hex');
       return encrypted;

   export function decrypt(encryptedText: string): string {
       const decipher = createDecipheriv(algorithm, key, iv);
       let decrypted = decipher.update(encryptedText, 'hex', 'utf8');
       decrypted +='utf8');
       return decrypted;
  1. Using the AES functions:

Create a new file index.ts and use the encrypt and decrypt functions.

   import { encrypt, decrypt } from './aes';

   const originalText = 'Hello World!';
   const encryptedText = encrypt(originalText);
   const decryptedText = decrypt(encryptedText);

   console.log(`Original Text: ${originalText}`);
   console.log(`Encrypted Text: ${encryptedText}`);
   console.log(`Decrypted Text: ${decryptedText}`);
  1. Compile and Run:

Compile the TypeScript code to JavaScript and then run the program.

   npx tsc
   node dist/index.js

Image description


  1. The flow starts with the Plaintext, goes through AES Encryption to become Ciphertext, and then goes through AES Decryption to return to the Original Plaintext.
  2. The Encryption Key and Decryption Key are shown to be used in the encryption and decryption processes. (In AES symmetric encryption, these keys are typically the same.)

๐Ÿ” Encryption Algorithms & Vulnerabilities ๐Ÿ”

Did you know that even some of the most renowned encryption algorithms, including AES, aren't entirely immune to threats? ๐Ÿค” In today's rapidly evolving digital landscape, nothing is truly hack-proof.

๐Ÿ’ก Curious to unravel the mysteries behind these vulnerabilities? If this post gets a whopping 1K likes, I'll delve deep into this topic in my upcoming articles.

๐Ÿš€ To kickstart this exciting series, I'm setting a goal: 1,000 likes. Yes, you heard it right! Once we hit that magic number, I'll start unraveling the mysteries of encryption vulnerabilities.

โค๏ธ๐Ÿ‘ Hit that like button!
๐Ÿ’ฌ Drop your thoughts in the comments below.
๐Ÿš€ Share this post far and wide with your tech-savvy friends and encryption enthusiasts.

Let's embark on this cryptographic journey together and explore the unknown realms of encryption! ๐ŸŒโœจ

Stay curious and connected! ๐ŸŒŸ


๐Ÿ“Œ Understanding and Implementing Advanced Encryption Standard (AES) in Node.js with TypeScript

๐Ÿ“ˆ 90.94 Punkte

๐Ÿ“Œ What Is AES Encryption, Examples of How the Advanced Encryption Standard Works

๐Ÿ“ˆ 49.57 Punkte

๐Ÿ“Œ Was ist AES (Advanced Encryption Standard)?

๐Ÿ“ˆ 42.26 Punkte

๐Ÿ“Œ The Simplified Advanced Encryption Standard (S-AES) Explained

๐Ÿ“ˆ 42.26 Punkte

๐Ÿ“Œ AES-Killer - Burp Plugin To Decrypt AES Encrypted Traffic Of Mobile Apps

๐Ÿ“ˆ 35.36 Punkte

๐Ÿ“Œ AES-Killer v3.0 - Burp Plugin To Decrypt AES Encrypted Traffic Of Mobile Apps On The Fly

๐Ÿ“ˆ 35.36 Punkte

๐Ÿ“Œ Qualcomm Snapdragon Automobile up to SDX24 AES-CCM/AES-GCM memory corruption

๐Ÿ“ˆ 35.36 Punkte

๐Ÿ“Œ AES Finder - Utility To Find AES Keys In Running Processes

๐Ÿ“ˆ 35.36 Punkte

๐Ÿ“Œ Bitcoin wallet.dat AES Encryption Padding weak encryption

๐Ÿ“ˆ 32.3 Punkte

๐Ÿ“Œ Implementing Passport Local With Yarn, Typescript, Express and PostgreSQL

๐Ÿ“ˆ 29.38 Punkte

๐Ÿ“Œ Implementing the Pipe Operator in TypeScript

๐Ÿ“ˆ 27.48 Punkte

๐Ÿ“Œ New versions of Advanced Mailbox Password Recovery, Advanced PDF Password Recovery (Pro) and Advanced Office Password Breaker

๐Ÿ“ˆ 27.47 Punkte

๐Ÿ“Œ Understanding and Implementing State Management in React: A Beginner's Guide

๐Ÿ“ˆ 27.35 Punkte

๐Ÿ“Œ Understanding and implementing Event-Driven Communication in Front-End Development

๐Ÿ“ˆ 27.35 Punkte

๐Ÿ“Œ DataLocker Inc Sentry K300 keypad flash drive has an OLED screen and 256-bit AES hardware encryption

๐Ÿ“ˆ 26.89 Punkte

๐Ÿ“Œ AES-256: Das bedeutet der Verschlรผsselungs-Standard

๐Ÿ“ˆ 26.42 Punkte

๐Ÿ“Œ AES Verschlรผsselung: Standard einfach erklรคrt

๐Ÿ“ˆ 26.42 Punkte

๐Ÿ“Œ 10 typescript developers you must follow to become typescript expert in 2024

๐Ÿ“ˆ 25.46 Punkte

๐Ÿ“Œ I made "TypeScript Swagger Editor", new type of Swagger UI writing TypeScript code in the browser

๐Ÿ“ˆ 25.46 Punkte

๐Ÿ“Œ How Types Work in TypeScript โ€“ Explained with JavaScript + TypeScript Code

๐Ÿ“ˆ 25.46 Punkte

๐Ÿ“Œ Implementing Temporal Features in PostgreSQL: SQL Standard and Beyond | Citus Con 2023

๐Ÿ“ˆ 25.4 Punkte

๐Ÿ“Œ Creating a serverless API using AWS Lambda and Node.js with TypeScript and Express.js

๐Ÿ“ˆ 25.14 Punkte

๐Ÿ“Œ Vuln: Drupal AES encryption Module Security Vulnerability

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ OpenSSL 1.0.1s/1.0.2g AES-NI CBC MAC Check e_aes_cbc_hmac_sha1.c weak encryption

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ Cherry B.UNLIMITED AES weak encryption

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ FreeBSD 5.3/5.4 IPsec Authentication AES-XCBC-MAC weak encryption

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ Lemur 0.1.4 AES CBC Entropy weak encryption

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ Procter & Gamble Oral-B App 5.0.0 on Android AES weak encryption

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ Microsoft Wireless Keyboard 850 Security Feature AES weak encryption

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ Jenkins up to 2.32.1/2.43 AES CBC Block Cipher weak encryption

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ Ghostfuscator - The Python Password-Protected Obfuscator Using AES Encryption

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ Pixcryption, a new cypher-like encryption technique that I plan to harden with AES. What do you think?

๐Ÿ“ˆ 24.99 Punkte

๐Ÿ“Œ Libgcrypt 1.8.4 AES Side-Channel weak encryption

๐Ÿ“ˆ 24.99 Punkte