TLS is Transport Layer Security. When we're talking about End-to-End Encryption, we usually mean: * Application Layer Security (between users) * Trans

TLS is Transport Layer Security. When we're talking about End-to-End Encryption, we usually mean: * Application Layer Security (between users) * Transport Layer Security (between each user and the server) And here, Security should mean public key authenticated encryption (e.g. crypto_box() from NaCl)