I-D ACTION:draft-ietf-sip-e2m-sec-06.txt

A New Internet-Draft is available from the on-line Internet-Drafts 
directories.
This draft is a work item of the Session Initiation Protocol Working Group of the IETF.

	Title		: End-to-middle Security in the Session Initiation Protocol (SIP)
	Author(s)	: K. Ono, S. Tachimoto
	Filename	: draft-ietf-sip-e2m-sec-06.txt
	Pages		: 30
	Date		: 2007-7-11

Some services provided by intermediaries depend on their ability to
   inspect a message body in the Session Initiation Protocol (SIP).
   When sensitive information is included in the message body, a SIP
   User Agent (UA) needs to protect it from other intermediaries than
   those that the UA agreed to disclose it to.  This document proposes a
   mechanism for securing information passed between an end user and
   intermediaries using S/MIME.  It also proposes mechanisms for a UA to
   discover intermediaries which need to inspect an S/MIME-secured
   message body, or to receive the message body with data integrity

   This specification is approved at the proposed standards level due to
   the IANA registration requirements.  Is is of sufficient quality for
   that level, however, the use of this mechanism in this specification
   are considered experimental.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-sip-e2m-sec-06.txt

To remove yourself from the I-D Announcement list, send a message to 
i-d-announce-request@ietf.org with the word unsubscribe in the body of 
the message. 
You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce 
to change your subscription settings.

Internet-Drafts are also available by anonymous FTP. Login with the 
username "anonymous" and a password of your e-mail address. After 
logging in, type "cd internet-drafts" and then 
"get draft-ietf-sip-e2m-sec-06.txt".

A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html 
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt

Internet-Drafts can also be obtained by e-mail.

Send a message to:
	mailserv@ietf.org.
In the body type:
	"FILE /internet-drafts/draft-ietf-sip-e2m-sec-06.txt".

NOTE:	The mail server at ietf.org can return the document in
	MIME-encoded form by using the "mpack" utility.  To use this
	feature, insert the command "ENCODING mime" before the "FILE"
	command.  To decode the response(s), you will need "munpack" or
	a MIME-compliant mail reader.  Different MIME-compliant mail readers
	exhibit different behavior, especially when dealing with
	"multipart" MIME messages (i.e. documents which have been split
	up into multiple messages), so check your local documentation on
	how to manipulate these messages.

Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.