The Transport Layer Security (TLS) Protocol Version 1.3
draft-ietf-tls-tls13-24
| The information below is for an old version of the document | |||
|---|---|---|---|
| Document | Type | Active Internet-Draft (tls WG) | |
| Last updated | 2018-03-02 (latest revision 2018-02-15) | ||
| Replaces | draft-ietf-tls-rfc5246-bis | ||
| Stream | IETF | ||
| Intended RFC status | Proposed Standard | ||
| Formats | pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Sean Turner | ||
| Shepherd write-up | Show (last changed 2018-03-01) | ||
| IESG | IESG state | Waiting for AD Go-Ahead | |
| Consensus Boilerplate | Yes | ||
| Telechat date |
Needs 2 more YES or NO OBJECTION positions to pass. |
||
| Responsible AD | Kathleen Moriarty | ||
| Send notices to | Sean Turner <sean@sn3rd.com> | ||
| IANA | IANA review state | IANA - Not OK | |
Network Working Group E. Rescorla
Internet-Draft RTFM, Inc.
Obsoletes: 5077, 5246 (if approved) February 15, 2018
Updates: 4492, 5705, 6066, 6961 (if
approved)
Intended status: Standards Track
Expires: August 19, 2018
The Transport Layer Security (TLS) Protocol Version 1.3
draft-ietf-tls-tls13-24
Abstract
This document specifies version 1.3 of the Transport Layer Security
(TLS) protocol. TLS allows client/server applications to communicate
over the Internet in a way that is designed to prevent eavesdropping,
tampering, and message forgery.
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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Internet-Drafts are draft documents valid for a maximum of six months
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 August 19, 2018.
Copyright Notice
Copyright (c) 2018 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
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to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
Rescorla Expires August 19, 2018 [Page 1]
Internet-Draft TLS February 2018
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
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material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
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than English.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1. Conventions and Terminology . . . . . . . . . . . . . . . 6
1.2. Change Log . . . . . . . . . . . . . . . . . . . . . . . 7
1.3. Major Differences from TLS 1.2 . . . . . . . . . . . . . 15
1.4. Updates Affecting TLS 1.2 . . . . . . . . . . . . . . . . 17
2. Protocol Overview . . . . . . . . . . . . . . . . . . . . . . 17
2.1. Incorrect DHE Share . . . . . . . . . . . . . . . . . . . 20
2.2. Resumption and Pre-Shared Key (PSK) . . . . . . . . . . . 21
2.3. 0-RTT Data . . . . . . . . . . . . . . . . . . . . . . . 23
3. Presentation Language . . . . . . . . . . . . . . . . . . . . 25
3.1. Basic Block Size . . . . . . . . . . . . . . . . . . . . 25
3.2. Miscellaneous . . . . . . . . . . . . . . . . . . . . . . 25
3.3. Vectors . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4. Numbers . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.5. Enumerateds . . . . . . . . . . . . . . . . . . . . . . . 27
3.6. Constructed Types . . . . . . . . . . . . . . . . . . . . 28
3.7. Constants . . . . . . . . . . . . . . . . . . . . . . . . 28
3.8. Variants . . . . . . . . . . . . . . . . . . . . . . . . 29
4. Handshake Protocol . . . . . . . . . . . . . . . . . . . . . 30
4.1. Key Exchange Messages . . . . . . . . . . . . . . . . . . 31
4.1.1. Cryptographic Negotiation . . . . . . . . . . . . . . 31
4.1.2. Client Hello . . . . . . . . . . . . . . . . . . . . 32
4.1.3. Server Hello . . . . . . . . . . . . . . . . . . . . 35
4.1.4. Hello Retry Request . . . . . . . . . . . . . . . . . 37
4.2. Extensions . . . . . . . . . . . . . . . . . . . . . . . 39
4.2.1. Supported Versions . . . . . . . . . . . . . . . . . 42
4.2.2. Cookie . . . . . . . . . . . . . . . . . . . . . . . 44
4.2.3. Signature Algorithms . . . . . . . . . . . . . . . . 44
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