AES RSA Encryption
🌍 Step 1: Understand the Two Types of Encryption Type Example Algo Key Used Speed Use Case Symmetric Encryption AES Same key for encrypt + decrypt ⚡ Fast Encrypt large data (like user info, PII) Asymmetric Encryption RSA Public key ↔ Private key 🐢 Slower Securely share / protect AES key 🔹 Step 2: Why We Use AES + RSA Together Think of this like a locker system 🏦: AES → is the locker key (small, secret key used to lock data fast) RSA → is the safe where you store that AES key securely Why? Because: AES is fast , but if someone steals the AES key → they can read all data ❌ So we protect the AES key using RSA public/private key pair. 👉 This technique is called Hybrid Encryption . 🧠 Step 3: Flow Overview (Very Simple Version) PII Data (phone, email, account) ↓ Encrypt using AES key → (Fast) ↓ AES key itself encrypted using RSA Public Key → (Secure) ↓ Store both in DB: - Encrypted PII - RSA-encrypted ...