Fw: Protocol Action: Compressed Data Content Type for S/MIME to Proposed Standard

----- Original Message -----
From: "The IESG" <[email protected]>
To: <IETF-Announce:>
Cc: "RFC Editor" <[email protected]>; "Internet Architecture Board"
<[email protected]>; <[email protected]>
Sent: Friday, March 08, 2002 4:37 PM
Subject: Protocol Action: Compressed Data Content Type for S/MIME to
Proposed Standard


>
>
>
> The IESG has approved the Internet-Draft 'Compressed Data Content Type
> for S/MIME' <draft-ietf-smime-compression-07.txt> as a Proposed
> Standard.  This document is the product of the S/MIME Mail Security
> Working Group.  The IESG contact persons are Jeffrey Schiller and
> Marcus Leech.
>
>
> Technical Summary
>
>   The Cryptographic Message Syntax (CMS) data format which is used by
>   SMIME does not provide for compression of content prior to
>   encryption. Because encrypted data is incompressible, compression
>   applied to an enciphered SMIME message will not prove helpful
>   (whether done at the IP layer, or at a lower layer such as in a
>   modem).
>
>   Compressing data prior to encryption provides two important
>   benefits.
>
>   1) It decreases the size of a message.
>   2) It makes cryptographic analysis of the contained message more
>      difficult for compressed data has less redundancy for the
>      cryptanalyst to exploit.
>
>   This document provide a mechanism for adding compression prior to
>   encryption in SMIME by being applied at the CMS layer.
>
> Working Group Summary
>
>   This document has the consensus of the SMIME Working Group.
>
> Protocol Quality
>
>  This document has been reviewed for the IESG by Jeffrey I. Schiller.