What the heck is AEAD again?
a year ago
- #encryption
- #security
- #cryptography
- AEAD stands for 'Authenticated Encryption with Associated Data' and is the current industry standard for encryption.
- AEAD ensures both the confidentiality and authenticity of encrypted messages, preventing tampering and unauthorized access.
- Modern protocols like TLS 1.3 and QUIC require AEAD, and libraries like Google's Tink and libsodium support it.
- Authenticated Encryption (AE) ensures the message hasn't been altered and originates from someone with the secret key.
- Associated Data (AD) allows unencrypted data to be authenticated alongside encrypted data, ensuring its integrity.
- AEAD simplifies secure encryption by combining encryption and authentication into a single, misuse-resistant API.
- Popular AEAD ciphers include AES256-GCM and ChaCha20-Poly1305, with recommendations varying by use case and library.