ECH


### Encrypted Clieht Hello
TLS Encrypted ClientHello (ECH) extension enables clients to encrypt ClientHello messages which are normally sent in cleartext, under a server's public key
This avoids leaking sensitive fields like the server name to the network



> [Good-bye ESNI, hello ECH!](https://blog.cloudflare.com/encrypted-client-hello/)

> [Chrome Platform Status](https://www.chromestatus.com/feature/6196703843581952)

> [draft-ietf-tls-esni-10 - TLS Encrypted Client Hello](https://datatracker.ietf.org/doc/draft-ietf-tls-esni/)





