Using TLS to Secure QUIC
draft-ietf-quic-tls-24
QUIC M. Thomson, Ed.
Internet-Draft Mozilla
Intended status: Standards Track S. Turner, Ed.
Expires: May 7, 2020 sn3rd
November 04, 2019
Using TLS to Secure QUIC
draft-ietf-quic-tls-24
Abstract
This document describes how Transport Layer Security (TLS) is used to
secure QUIC.
Note to Readers
Discussion of this draft takes place on the QUIC working group
mailing list (quic@ietf.org), which is archived at
https://mailarchive.ietf.org/arch/search/?email_list=quic [1].
Working Group information can be found at https://github.com/quicwg
[2]; source code and issues list for this draft can be found at
https://github.com/quicwg/base-drafts/labels/-tls [3].
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
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and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on May 7, 2020.
Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved.
Thomson & Turner Expires May 7, 2020 [Page 1]
Internet-Draft Using TLS to Secure QUIC November 2019
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Notational Conventions . . . . . . . . . . . . . . . . . . . 4
2.1. TLS Overview . . . . . . . . . . . . . . . . . . . . . . 4
3. Protocol Overview . . . . . . . . . . . . . . . . . . . . . . 7
4. Carrying TLS Messages . . . . . . . . . . . . . . . . . . . . 8
4.1. Interface to TLS . . . . . . . . . . . . . . . . . . . . 10
4.1.1. Handshake Complete . . . . . . . . . . . . . . . . . 10
4.1.2. Handshake Confirmed . . . . . . . . . . . . . . . . . 10
4.1.3. Sending and Receiving Handshake Messages . . . . . . 10
4.1.4. Encryption Level Changes . . . . . . . . . . . . . . 12
4.1.5. TLS Interface Summary . . . . . . . . . . . . . . . . 13
4.2. TLS Version . . . . . . . . . . . . . . . . . . . . . . . 14
4.3. ClientHello Size . . . . . . . . . . . . . . . . . . . . 15
4.4. Peer Authentication . . . . . . . . . . . . . . . . . . . 15
4.5. Enabling 0-RTT . . . . . . . . . . . . . . . . . . . . . 16
4.6. Accepting and Rejecting 0-RTT . . . . . . . . . . . . . . 16
4.7. Validating 0-RTT Configuration . . . . . . . . . . . . . 17
4.8. HelloRetryRequest . . . . . . . . . . . . . . . . . . . . 17
4.9. TLS Errors . . . . . . . . . . . . . . . . . . . . . . . 18
4.10. Discarding Unused Keys . . . . . . . . . . . . . . . . . 18
4.10.1. Discarding Initial Keys . . . . . . . . . . . . . . 18
4.10.2. Discarding Handshake Keys . . . . . . . . . . . . . 19
4.10.3. Discarding 0-RTT Keys . . . . . . . . . . . . . . . 19
5. Packet Protection . . . . . . . . . . . . . . . . . . . . . . 20
5.1. Packet Protection Keys . . . . . . . . . . . . . . . . . 20
5.2. Initial Secrets . . . . . . . . . . . . . . . . . . . . . 20
5.3. AEAD Usage . . . . . . . . . . . . . . . . . . . . . . . 21
5.4. Header Protection . . . . . . . . . . . . . . . . . . . . 23
5.4.1. Header Protection Application . . . . . . . . . . . . 23
5.4.2. Header Protection Sample . . . . . . . . . . . . . . 25
5.4.3. AES-Based Header Protection . . . . . . . . . . . . . 26
5.4.4. ChaCha20-Based Header Protection . . . . . . . . . . 26
5.5. Receiving Protected Packets . . . . . . . . . . . . . . . 27
5.6. Use of 0-RTT Keys . . . . . . . . . . . . . . . . . . . . 27
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