P1735Minutes2012Apr16 < P1735

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---++ IEEE P1735 Working Group Meeting of April 16, 2012

---+++ Meeting Info

[[P1735MeetingInfo][Conference Bridge and Live-Meeting]]

---+++ Participants

   * Attending 
      * Steven Dovich, Cadence _DR_
      * Dave Graubart, Synopsys _DR_
      * Ray Martin, Xilinx _DR_
      * Bassam Tabbara, Synopsys
      * Michael Smith, Synopsys _DRA_
      * Jarek Kaczynski, Aldec _DR_
      * Joe Daniels, Self
      * John Shields, Mentor _DR_
      * Parminder Gill, Synopsys _DRA_
      * Dave Clemans, Synopsys _DRA_

   * Not Attending
      * Premduth Vidyanandan, Xilinx
      * Nick Sgoupis, CAST
      * Albert Chiang, Synopsys
      * Nitin Khurana, Cadence _DRA_
      * David Pena, Cadence
      * Karlton Lau, Xilinx
      * Gary Delp, Accellera/Silver Loon Systems
      * Bin Dai, Xilinx
      * Ruchi Tyagi, Cadence _DRA_
      * Syed Huq, Cisco
      * William A Hanna, Boeing
      * Meera Srinivasan, Synopsys
      * Jim Robinson, Synopsys
      * NSS Subramanian, Cadence
      * David Tran, Synopsys

---+++ Agenda

   1 Determine Quorum
   1 [[http://standards.ieee.org/board/pat/pat-slideset.pdf][Patent slides]]
   1 Approve agenda
   1 Approval of Meeting minutes from 04/02/2012
   1 Action Items Status
   1 Liaison Reports
   1 Inter-operability Issues
   1 License Management
   1 Key Management
   1 Rights Management
   1 Common Rights and Visibility
   1 Work Plan
   1 Other Business
   1 Adjourn

---+++ Minutes

---++++ Attendance/Quorum

We have 5/6 eligible entities, and have a working quorum.

---++++ Patent Policy

The [[http://standards.ieee.org/board/pat/pat-slideset.pdf][Patent slides]] were offered for review.

No new claims were disclosed at the call for essential patent claims.

---++++ Agenda Approval

Motion by Jarek, seconded by Dave G. Motion is approved.

---++++ Previous Minutes
Dave G moved and Jarek seconded the approval of the [[P1735Minutes2012Apr2][April 2, 2011]] minutes. The motion was approved.

---++++ Action Item Review
Steven reviewed the open action items.

---++++ Liaison Reports
Joe Daniels reported to be waiting for counter-signed contracts from IEEE Professional Services.


---++++ Inter-operability
Jarek reported no additional activity since the last meeting.

---++++ License Management
Dave G presented an initial presentation on a licensing proxy model.  John commented that there is a semantic model regarding when the license is checked, and details on that are needed to understand the implementation overhead.

Steven asked about the representation of public keys for the proxy, whether X.509 certificates or named keys should be supported.  Dave noted that he had concerns about hurdles for new participants and we need to discuss that in more detail in a future meeting.

Dave will post the presentation slides to the private working group area.

---++++ Key Management
Dave G introduced an offline/off-reflector discussion regarding best practices for re-use of session keys.

John explained that his understanding was that the session of the encryption tool controlled the selection of a session key.  The requirement for transformative tools to encrypt using the session key of the original design is acceptable given the requirement for those tools to not regenerate key blocks. The keys for licensing proxies should however be different from those used to protect the data blocks.

Jarek expressed the concern that re-use of the symmetric key would endanger the security of the assymetric key-pairs. He acknowledged that reuse of the session key with bit-wise copies of the key block reduced the risk of that exposure, and that we should document these best practices in our recommendations.

Steven and John discussed the value of using random IV for each data block, digest, control block or other use of a shared session key. 

---++++ Rights Management
No incremental discussion at this meeting.  Dave G and Parminder are developing revisions aligned with John's balloting comments.

---++++ Common Rights and Visibility


---++++ Work Plan


| *Task* | *Requirements/White Paper* | *Writer-ready Specification* |
| Use Model | 02-Jul-2008 | %RED%???%ENDCOLOR%  |
| Trust Model | %RED%???%ENDCOLOR%  | %RED%???%ENDCOLOR%  |
| Interoperability | 24-Aug-2009 | 26-Jan-2010 |
| License Management | 19-Apr-2011 | %RED%???%ENDCOLOR%  |
| Visibility Management | 23-Jul-2010 | %RED%???%ENDCOLOR%  |
| Key Management | 18-Oct-2010 | 12-Aug-2011 |
| Rights Control Structures | 27-Jun-2011 | %RED%???%ENDCOLOR%  |
| Common Rights | 23-Jul-2011 | %RED%???%ENDCOLOR%  |


---++++ Other Business


---+++ Next Meeting

The next [[P1735MeetingInfo][P1735 meeting]] is scheduled for April 30, 2012 at 16:00UTC.

*Tentative Agenda*
   1 Determine Quorum
   1 [[http://standards.ieee.org/board/pat/pat-slideset.pdf][Patent slides]]
   1 Approve agenda
   1 Approval of Meeting minutes from 04/16/2012
   1 Action Items Status
   1 Liaison Reports
   1 Meeting Schedule
   1 Inter-operability Issues
   1 License Management
   1 Key Management
   1 Rights Management
   1 Common Rights and Visibility
   1 Work Plan
   1 Other Business
   1 Adjourn

---++++ Adjournment

Motion by Dave G, second by Ray. Approved by acclamation at 17:17UTC

---+++ Approval

These minutes are unapproved.

Main.StevenDovich - 2012-04-16
Topic revision: r2 - 2012-04-16 - 16:19:17 - StevenDovich
P1735