A new Request for Comments is now available in online RFC libraries.
RFC 7321
Title: Cryptographic Algorithm Implementation
Requirements and Usage Guidance for
Encapsulating Security Payload (ESP) and
Authentication Header (AH)
Author: D. McGrew, P. Hoffman
Status: Standards Track
Stream: IETF
Date: August 2014
Mailbox: mcgrew@cisco.com,
paul.hoffman@vpnc.org
Pages: 11
Characters: 25724
Obsoletes: RFC 4835
I-D Tag: draft-ietf-ipsecme-esp-ah-reqts-10.txt
URL: https://www.rfc-editor.org/rfc/rfc7321.txt
This document updates the Cryptographic Algorithm Implementation
Requirements for the Encapsulating Security Payload (ESP) and
Authentication Header (AH). It also adds usage guidance to help in
the selection of these algorithms.
ESP and AH protocols make use of various cryptographic algorithms to
provide confidentiality and/or data origin authentication to
protected data communications in the IP Security (IPsec)
architecture. To ensure interoperability between disparate
implementations, the IPsec standard specifies a set of mandatory-to-
implement algorithms. This document specifies the current set of
mandatory-to-implement algorithms for ESP and AH, specifies
algorithms that should be implemented because they may be promoted to
mandatory at some future time, and also recommends against the
implementation of some obsolete algorithms. Usage guidance is also
provided to help the user of ESP and AH best achieve their security
goals through appropriate choices of cryptographic algorithms.
This document is a product of the IP Security Maintenance and Extensions Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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