AES-GCM
AES (Advanced Encryption Standard) is the most widely used symmetric encryption standard worldwide. GCM (Galois/Counter Mode) provides both confidentiality and data integrity.
Block vs. Stream Ciphers
Symmetric encryption is generally divided into two main types based on how they process data: Block Ciphers and Stream Ciphers.
ChaCha20
ChaCha20 is a high-performance stream cipher designed by Daniel J. Bernstein. It is often combined with Poly1305 for authentication (AEAD).