1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-17-0048-00-0000
Title: Report on ECHONET Lite for
Date Submitted: September 15, 2017
Presented at IEEE session #82 in Waikoloa, HI, USA Authors or Source(s):
 Yoshikazu Hanatani (Toshiba) and Tomoki Takazoe (Panasonic)
Abstract: This reports current status of ECHONET Lite System Architecture Working Group.

2. IEEE 802.21 presentation release statements
This document has been prepared to assist the IEEE Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE
The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual < and in Understanding Patent Issues During IEEE Standards Development
IEEE presentation release statements
This document has been prepared to assist the IEEE Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE
The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws < and in Understanding Patent Issues During IEEE Standards Development

3. What is ECHONET Cons.?
The ECHONET consortium was established in 1997 to expand the market of home networking devices by standardizing the technology and assuring its interoperability.
As of 2016, the consortium is made up of more than 160 companies across the industry and over 25 universities and research institutions.
The System Architecture Working Group in the ECHONET consortium has been developing DA specification whish is a security specification for ECHONET Lite protocol.

4. Organization of ECHONET Cons.
DA Conformance WG

5. Outline of Device Authentication spec.
If unknown devices are connected to a home area network (HAN), it may cause an attack.
To prevent it, we have to authenticate devices.
Each device has a certificate issued by Trusted Authority.
An authenticated device can receive a device key and group keys.
HAN is protected by a group key.

6. Current Status Device authentication (DA) specification
Multicast security mechanism in IEEE Std and HEMS use case in IEEE Std are applied.
To simplify a certificate for DA spec., a provisioning protocol will be updated.
The update does not affect IEEE Std
Target date of the update is Dec
Test specification
Define a check list for certifying an implementation of DA specification.
It will be revised based on the update of DA spec.
Operating specification
DA conformance WG is still discussing Operation method, e.g., Certificate Authority for DA spec.