The Transport Layer Security (TLS) Protocol Version 1.3
RFC 8446
Document | Type |
RFC - Proposed Standard
(August 2018; Errata)
Was draft-ietf-tls-tls13 (tls WG)
|
|
---|---|---|---|
Author | Eric Rescorla | ||
Last updated | 2020-03-07 | ||
Replaces | draft-ietf-tls-rfc5246-bis | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized with errata 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 | RFC 8446 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Kathleen Moriarty | ||
Send notices to | Sean Turner <sean@sn3rd.com> | ||
IANA | IANA review state | IANA OK - Actions Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) E. Rescorla Request for Comments: 8446 Mozilla Obsoletes: 5077, 5246, 6961 August 2018 Updates: 5705, 6066 Category: Standards Track ISSN: 2070-1721 The Transport Layer Security (TLS) Protocol Version 1.3 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. This document updates RFCs 5705 and 6066, and obsoletes RFCs 5077, 5246, and 6961. This document also specifies new requirements for TLS 1.2 implementations. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8446. Rescorla Standards Track [Page 1] RFC 8446 TLS August 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 (https://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 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. Rescorla Standards Track [Page 2] RFC 8446 TLS August 2018 Table of Contents 1. Introduction ....................................................6 1.1. Conventions and Terminology ................................7 1.2. Major Differences from TLS 1.2 .............................8 1.3. Updates Affecting TLS 1.2 ..................................9 2. Protocol Overview ..............................................10 2.1. Incorrect DHE Share .......................................14 2.2. Resumption and Pre-Shared Key (PSK) .......................15 2.3. 0-RTT Data ................................................17 3. Presentation Language ..........................................19 3.1. Basic Block Size ..........................................19 3.2. Miscellaneous .............................................20 3.3. Numbers ...................................................20 3.4. Vectors ...................................................20 3.5. Enumerateds ...............................................21 3.6. Constructed Types .........................................22 3.7. Constants .................................................23 3.8. Variants ..................................................23 4. Handshake Protocol .............................................24 4.1. Key Exchange Messages .....................................25 4.1.1. Cryptographic Negotiation ..........................26 4.1.2. Client Hello .......................................27 4.1.3. Server Hello .......................................31 4.1.4. Hello Retry Request ................................33 4.2. Extensions ................................................35 4.2.1. Supported Versions .................................39 4.2.2. Cookie .............................................40Show full document text