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 | |||
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Document | Type | Active Internet-Draft (tls WG) | |
Author | Eric Rescorla | ||
Last updated | 2018-03-02 (latest revision 2018-02-15) | ||
Replaces | draft-ietf-tls-rfc5246-bis | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | pdf htmlized (tools) 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 6 more YES or NO OBJECTION positions to pass. |
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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- Drafts is at http://datatracker.ietf.org/drafts/current/. 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 carefully, as they describe your rights and restrictions with respect 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 10, 2008. The person(s) controlling the copyright in some of this 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 the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other 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 . . . . . . . . . . . . . . . . 44Show full document text