Skip to main content

Liaison statement
Response to liaison Statement on URI Signing 2015-12-30

Additional information about IETF liaison relationships is available on the IETF webpage and the Internet Architecture Board liaison webpage.
State Posted
Submitted Date 2016-03-08
From Group ISO-IEC-JTC1-SC29
From Contact Shinji Watanabe
To Group IETF
To Contacts The IETF Chair <>
Cc The IESG <>
The IETF Chair <>
Stephan Wenger <>
Response Contact Watanabe Shinji <>
Purpose In response
Attachments Liaison
Liaisons referred by this one Response to request for information on URI Signing 2015-11-02
MPEG would like to thank the IETF experts for providing detailed usage about
your specifications such as the URI Signing for CDN Interconnection (CDNI) and
the URI Signing for HTTP Adaptive Streaming.

This information helped the MPEG experts to better understand how the URI
Signing for HTTP Adaptive Streaming can be used in the context of MPEG DASH.
MPEG would like to inform the IETF experts that normative work to support the
exchange of tokens in a generic manner is being standardized. The completion
date is expected by the end of 2016 as part of the ongoing Amendment 3 of
ISO/IEC 23009-1.

Even though other token formats can be used with this generic mechanism, the
URI Signing for HTTP Adaptive Streaming specification exhibits relevant
features that MPEG experts have identified for DASH deployments. For instance,
the header based packaging of the Signed Token and the Expiration Time Setting
are key features which the generic exchange of token in MPEG DASH are relying

MPEG thanks the IETF CDNI working group for the collaboration over the past
months and welcomes future updates from the IETF on this topic, if any.

Our future meetings:
-       DASH Ad-hoc meetings, 29 May 2016, Geneva, Switzerland
-       The 115th MPEG meeting, 30 – 3 May 2016, Geneva, Switzerland