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RFC 8744
Title: Issues and Requirements for Server
Name Identification (SNI) Encryption in TLS
Author: C. Huitema
Status: Informational
Stream: IETF
Date: July 2020
Mailbox: [email protected]
Pages: 13
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-tls-sni-encryption-09.txt
URL: https://www.rfc-editor.org/info/rfc8744
DOI: 10.17487/RFC8744
This document describes the general problem of encrypting the Server
Name Identification (SNI) TLS parameter. The proposed solutions hide
a hidden service behind a fronting service, only disclosing the SNI
of the fronting service to external observers. This document lists
known attacks against SNI encryption, discusses the current "HTTP
co-tenancy" solution, and presents requirements for future TLS-layer
solutions.
In practice, it may well be that no solution can meet every
requirement and that practical solutions will have to make some
compromises.
This document is a product of the Transport Layer Security Working Group of the
IETF.
INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
this memo is unlimited.
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