A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : The With-MAC key-wrapping algorithm for Cryptographic Message Syntax
Author(s) : Jonathan C. Herzog
Roger Khazan
Filename : draft-herzog-withmac-keywrap-02.txt
Pages : 19
Date : 2012-08-27
Abstract:
This document describes a new key-wrapping algorithm to be used in
the EnvelopedData, AuthenticatedData and AuthEnvelopedData structures
of the Cryptographic Message Syntax. Because these structures do not
provide data-origin authentication, a recipient cannot
cryptographically verify that the plaintext received was the
plaintext encapsulated by the message's original sender. The With-
MAC key-wrapping algorithm allows an EncryptedKey value to hold both
a wrapped symmetric key and a MAC value on the data to be
authenticated. When used in EnvelopedData, AuthenticatedData and
AuthEnvelopedData structures, therefore, these structures can achieve
data-origin authentication (in some circumstances) using only
symmetric-key algorithms. This is useful in cases where the
structures must be generated by entities without certified digital-
signature keys.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-herzog-withmac-keywrap
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-herzog-withmac-keywrap-02
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-herzog-withmac-keywrap-02
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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