Cryptography

Tagged LibreGuard articles

Cryptography Articles

Archive 2026 (25) 2025 (1)

Two illuminated encryption streams, one blue and one green, meet in a secure digital tunnel

Networking Basics

AES-256 vs ChaCha20: What’s the Difference?

AES-256 and ChaCha20 are modern encryption algorithms. Compare their designs, performance factors, secure modes, and why a cipher name alone is not enough.

By LibreGuard Team February 04, 2026 5 min read

An encrypted tunnel uses glowing temporary keys that rotate forward along a secure network path

Networking Basics

What Is Perfect Forward Secrecy (PFS)?

Perfect forward secrecy uses temporary session keys to help protect earlier sessions if a long-term key is later exposed. Learn how PFS works and its limits.

By LibreGuard Team January 27, 2026 4 min read