Skip to main content

Liaison statement
Cryptographic Message Syntax Coordination

Additional information about IETF liaison relationships is available on the IETF webpage and the Internet Architecture Board liaison webpage.
State Posted
Submitted Date 2016-08-28
From Group SEC
From Contact Scott Mansfield
To Group ITU-T
To Contacts
Scott Mansfield <>
The IETF Chair <>
Stephen Farrell <>
Kathleen Moriarty <>
Response Contact Stephen Farrell <>
Kathleen Moriarty <>
Purpose For action
Deadline 2016-11-04 Action Taken
Attachments (None)
Liaisons referred by this one Response to your liaison to the CCAMP working group on L1VPNs
New Request for Comment Published (RFC 4139)
Liaison Statement to ITU-T Q. 9/4 regarding management specification harmonization (copy to IETF O&M Area)
Liaison Statement: ITU Liaison to External Organizations regarding IP applications over mobile systems
Liaison Statement on request of modification of existing SDP parameters about T.38
Cryptographic Message Syntax (CMS) [1] has been the topic of a number of
liaisons back and forth between the IETF and SG-17.  ITU-T SG 17 has expressed
a desire to work more cooperatively with the IETF.  In the spirit of
cooperation, the IETF requests the ITU-T SG 17 consider turning X.894 [2] into
a profile of CMS [1] to better streamline ITU-T and IETF activities.  We
suggest using X.1541 [3] developed in this same spirit of cooperation as a
model. The IETF is concerned with the current version of ITU-T X.894 [2] that
the ITU-T is progressing as a draft recommendation without coordination with
the IETF.

In order to move forward in a coordinated fashion, it is suggested to consider
turning X.894 [2] into a profile of CMS [1].  This would provide an example of
how to use CMS [1] (with all proper references) in the ITU-T environment.

The Security Area directors are happy to discuss and coordinate on the best way
to approach any such proposed work.

[1] RFC 5652 Cryptographic Message Syntax (CMS)
[2] ITU-T X.894 Generic applications of ASN.1 - Cryptographic Message Syntax
[3] ITU-T X.1541 (09/2012) Incident object description exchange format