Symmetric vs Asymmetric Encryption: AES vs RSA
The fundamental difference between shared-key and public-key encryption, with practical examples of when each is the right tool.
Published:
Tags: security, cryptography, encryption
Symmetric vs Asymmetric Encryption: AES vs RSA Explained Encryption keeps data confidential. But not all encryption works the same way. Symmetric encryption uses one key for both locking and unlocking. Asymmetric encryption uses a key pair: a public key that locks, a private key that unlocks. Each has strengths that the other lacks, which is why nearly every secure communication protocol — TLS, SSH, PGP, Signal — uses both in combination. Symmetric Encryption: One Key, Two Operations In symmetric encryption, the same key encrypts and decrypts. AES (Advanced Encryption Standard) is the dominant symmetric cipher. AES-256-GCM is an authenticated encryption mode — it both encrypts the data (confidentiality) and computes an authentication tag (integrity). If the ciphertext is tampered with,…
All articles · theproductguy.in