Key Expansion — 2 Technical Articles

Mar 10, 2020 · Information Security

Detailed Walkthrough of AES Encryption and Decryption Process with Node.js Implementation

This article provides a step‑by‑step technical guide to the AES encryption and decryption algorithm, covering state matrix construction, key expansion, round operations, final round differences, and practical Node.js code examples for handling padding and common implementation pitfalls.

AESEncryptionInformation Security

0 likes · 9 min read

Detailed Walkthrough of AES Encryption and Decryption Process with Node.js Implementation

WeChat Backend Team

Dec 9, 2016 · Information Security

Understanding TLS Record Protocol: Encryption, MAC, and Key Management

This article explains how the TLS record layer encrypts and authenticates application data by fragmenting, sequencing, optionally compressing, encrypting, computing HMAC, and transmitting over TCP/IP, while detailing the security parameters, key derivation, and the evolution from MAC‑then‑Encrypt to AEAD modes.

AEADEncryptionKey Expansion

0 likes · 15 min read

Understanding TLS Record Protocol: Encryption, MAC, and Key Management