AES Encryption
Advanced Encryption Standard - The most widely used symmetric encryption algorithm
âī¸ Configuration
đ Encrypt/Decrypt
AES Overview
The Advanced Encryption Standard (AES) is a symmetric block cipher that encrypts data in 128-bit blocks.
| Variant | Key Size | Rounds | Security |
|---|---|---|---|
| AES-128 | 128 bits | 10 | High |
| AES-192 | 192 bits | 12 | Very High |
| AES-256 | 256 bits | 14 | Extreme |
Encryption Modes
CBC (Cipher Block Chaining)
Most secure mode. Each block depends on the previous block. Requires IV.
â Recommended for most applications
ECB (Electronic Codebook)
Simplest mode. Each block encrypted independently.
â ī¸ Not recommended - reveals patterns
CFB (Cipher Feedback)
Stream cipher mode. Good for real-time applications.
âšī¸ Self-synchronizing
OFB (Output Feedback)
Stream cipher mode. No error propagation.
â ī¸ Requires unique IV for each message
Security Best Practices
â
Use AES-256 for maximum security
đ Generate keys using cryptographically secure random number generators
đ Use unique IVs for each encryption operation
đĢ Never reuse keys across different applications
Real-World Applications
File Encryption
Database Security
VPN Tunnels
Secure Messaging
WiFi Security
Disk Encryption
Cloud Storage
Payment Systems