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Title : The With-MAC key-wrapping algorithm for Cryptographic Message Syntax
Author(s) : R. Khazan, et al
Filename : draft-herzog-withmac-keywrap-00.txt
Pages : 17
Date : 2011-04-14
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.
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