PS 1 26 October 2005 SEA Area Report Reston, VA, USA, 26 October 2005

26 October 2005 PS 1

SEA Area ReportSEA Area Report

Reston, VA, USA, 26 October 2005


System Engineering AreaOverview

• SEA Includes:• System Architecture, Information Architecture & Security

Working Groups• SANA BoF (seeking WG status now)• SGIA BoF (initial meeting)• XML Standards and Guidelines SIG (initial meeting)

• Responsibilities• Overall architecture for space mission communications,

operations, and cross-support• Coordinate and collaborate with the other areas about

architectural choices and options • Support the CESG in evaluating consistency of all area

programs of work with the defined architecture• Create such working groups and BoFs as are required to

progress the work of CCSDS


System Engineering Area Summary:

Current WGs and BOFs

• System Architecture WG - Met in Atlanta• Develop a high level system architecture reference model and formal

methodology and tools.• Finalize Reference Architecture for Space Data Systems (RASDS) V1

Magenta Book• Discuss how to progress future work on architectural formalisms

• Information Architecture WG - Met in Atlanta• Develop a high level Information Architecture reference model and

definitions of active and passive information objects • Finalize Reference Architecture for Space Information Management

(RASIM) V1 Green Book• Discuss how / where to begin work to define component interfaces

and standards• Security WG - Met in Atlanta

• Develop security overview & threat assessment, and security architecture, framework and related standards

• Progress Security Architecture and other specific security elements (Key management, Crypto and Authentication Standards)

• Discussions with other WGs as needed




• SANA BoF - Met in Atlanta• Develop detailed requirements for the Space Assigned

Numbers Authority (SANA), an implementation approach and a plan for a rapid prototype to demonstrate functionality

• Finalize SANA charter, submitted to CESG for approval• Demo SANA prototype

New BoF & SIGs

• Space Ground Interoperability Architecture (SGIA) BoF - Met in Atlanta

• Develop an end to end space / ground cross support architecture and services catalog in response to IOAG request

• Initiate SGIA charter discussions, create shared vision for task• XML Standards & Guidelines (XSG) SIG - Met in Atlanta

• Develop guidelines and standard approaches for XML schema and namespaces, short fuse due to immediate WG needs

• Created agreed task concept, identified chair and members, initiated discussions, first telecon held




New BoF & SIGs, contd

• Delta-DOR End to End Processing - Discussed w/ CESG in Atlanta• Develop an end to end approach to Delta-DOR processing,

including RF signals, data reception, raw data capture & transmission, data processing, delivery of products and ancillary information such as quasar catalogs

• Initiate discussions, create shared vision for task and where / how the work should be carried out, co-location problems, first telecon held

• Data Management / Data Accountability - brief discussion in Atlanta• Develop an end to end data management and data

accountability approach• Initiate discussions, create shared vision for task and where /

how the work should be carried out


SAWG Summary Technical Status

1. Systems Architecture WG

Goal: Develop a reference architecture and a formal representation method

Working Group Status: Active ___ Idle ___ Work is suspended _X_

Working Group Summary Situation:

Working Group Summary progress:

• Updated the RASDS document (nearly final RP)

• Started to develop a formal model (before WB)

Problems and Issues:

• Requested by CMC to cease work on formal models

• Development of formal model is deemed essential by SAWG

Status: OK CAUTION PROBLEMComment: Work is

suspended


SecWG Summary Technical Status

1. Security WG

Goal:

Working Status: Active __X_ Idle ____

Summary progress: Three documents actively being produced (Security Green Book, Security Architecture, Threat). All docs green. Green Book to CESG.

Progress since last meeting: Completed Green Book, completed Threat document, completed Encryption and Authentication Trade Studies – agreed on algorithms

Problems and Issues: Resources – need to ensure continued participation from all member agencies

Docs OK. New work OK.

Working Group is advancing

and producing good products.

PROBLEMCAUTIONOKstatus:


IAWG Summary Technical Status

1. Information Architecture WG

Goal: Develop a Reference Architecture for Space Information Management as extension to RASDS Information Viewpoint

Working Group Status: Active _X_ Idle ___

Working Group Summary Situation:

Working Group Summary progress:

• Updated the RASIM document (nearly complete GB),

• Discussed how to transition to development of components & interfaces

Problems and Issues:

• Agreement on transition is still unclear

• Availability of agency participants with right skill set is uncertain

TransitionUnclear

Comment:PROBLEMCAUTIONOKStatus:


SANA BOF Executive Summary

• SANA BOF on 15 September 2005 in Atlanta, GA• 8 representatives included NASA (JPL, GSFC, MSFC), ESA

• Intention• Establish plan, processes and recommended practices for CCSDS Space

Assigned Numbers Authority (SANA)• Define content, overall approach, and means for updating included information• Define how the SANA would work with different CCSDS WGs, registries, and

with agency specific elements• Establish practice for future maintenance and sustaining of the SANA

• Motivation:• Primarily provide access to CCSDS global information

- Manage central info centrally as authoritative source- Support local management of distributed agency & mission info, provide central pointers to their authoritative

sources

• Existing SANA is largely conceptual, as defined in CCSDS A02.1-Y-2. Restructured Organization and Processes for the Consultative Committee for Space Data Systems. Yellow Book. Issue 2. April 2004:

• “SANA” materials are in some existing repositories and also are buried within a number of different CCSDS documents

• Users have a very difficult time locating these within the CCSDS web site and understanding how they relate one to the other


SANA BOF Recommendations

• Update the SANA charter to reflect agreements from meeting and submit to the CESG for approval

• Ensure that the SANA can deal with the complexity of future spaceflight programs, projects and the technologies involved• Help reduce stove piping• Setup a mechanism to access and apply specific information technologies

through registry processes and artifacts (CCSDS common S/W)• Introduce information management commonality across operational

domains Enable interoperability & reuse (data dictionaries & glossary, schemas, assigned numbers, common name registry)

• Provide commonality at the technical & operational level among disparate projects and development organizations

• Single point of (common) access for management, technologists, developers and operators to technically relevant CCSDS related information (SANA=web link management)


SGIA BoF Executive Summary

• 11 representatives included NASA (JPL, MSFC), ESA, CSA, and JAXA participation• Attendees: Shames, Okino, Crichton, Weiss, Yamada, Kearney, Peccia,

Gannet, Hughes, Reich, Hartmann• Coordination Identified:

- JPL and MSFC are actively supporting effort- ESA has indicated that they will provide some level of support (telecon, email coordination

level) – support from existing SAWG members- CNES & JAXA are seeking support

• General agreement on: Charter of SGIA • Some CHANGE in terms of generalization as to the service provider/user

model, specifically do not constrain to SLE

• General agreement on: 5 step process• Some CHANGE in terms of language to capture iteration and

stakeholder feedback towards- the cross support service catalog- cross support service architecture

• Some CHANGE in terms of refinement of the content, including process as well as the level of detail of the cross support service catalog was identified.


SGIA BoF Discussion

• There was general concern as to what the SGIA architecture would entail:

• A specific suggestion was that it may be sufficient to provide gateway interfaces

• Possible options are to present interoperability at the gateway level or end-to-end service along with identified confederated nodes and profiles.

• Desire to ensure that existing organizational boundaries and implementation approaches are accommodated

• Leverage IOAG DRAFT catalog and architecture

• Schedule - general belief we could get an initial WB by June 06 meeting

• There was some concern about the scope and meaning of “profiles”.


XSG SIG Executive Summary

• XSG SIG on 14 September 2005 in Atlanta, GA• 23 representatives included NASA (JPL, GSFC, MSFC), ESA, CNES, OMG SDTF,

and other participation

• Intention• Establish guidelines and recommended practices for CCSDS XML schema,

naming, and usage before this first set of schema, from several different working groups, become finalized and externally visible

• Define common rules, naming and style guides, define URL hierarchy and namespace architecture, define versioning and use schema location as a resolvable URL

• Motivation:• Get CCSDS namespace and rules sorted out before current standards are

finalized• Four separate XML schemas are in development, there is no consistency of

naming, usage, namespace, etc across them• Enable interoperable implementations of SW and systems• Create collaborative solutions and an authoritative source for CCSDS and

agency use


XSG SIG Recommendations

• Create a small working group of current XML schema authors and experts to develop short term approach

• XML Stds & Guidelines SIG• Erik Barkley (CSS, NASA / JPL)• David Berry (MOIMS, NASA / JPL)• Lou Reich (chair, MOIMS, NASA / GSFC)• Gerry Simon (OMG Space DTF)• Arnaud Lucas(CSS, CNES) • Martin Soto (ESA)

• Define a URL hierarchy and namespace architecture• Create a naming and style guide, including guidelines for development of schema

and namespace• Define versioning approach• Create a resolvable URL for schemaLocation, ( create a CCSDS server for these,

future)• Define levels of XML schema reusable components (potentially based on the UBL

model)• Define approach for consistent use of qualified and unqualified types, elements

and attributes• Get a CCSDS NID by submitting an RFC to IETF, establish base for URN, list of

23 exist now (RFC 3406, May 2005), see also IANA registry of URI (RFC 3986)


SEA Liaisons

• SysML Partners have developed a system engineering modeling language based upon UML 2.0. A liaison has been agreed to, which opens up a communication channel between the SEA and SysML groups. The intent is to provide the SysML solution to CCSDS for their validation for application to Space Systems. • SysML agreed to form a liaison w/ CCSDS. SEA, on behalf of CCSDS, has

agreed to that liaison and several joint meetings have been held.• The SysML spec is currently at version 0.9. Four UML tool vendors have

demonstrated SysML 0.9 compliant versions of their tools. A summary presentation is available from the SysML web site.

• An informal liaison has been developed with ISO/IEC JTC 1 / SC7 which is developing an UML for RM-ODP approach. This opens up a useful communication channel between the two groups. The intent is to validate the RASDS to the RM-ODP and to provide feedback to the SC7 WG it its applicability to Space Systems. • The JTC 1 / SC 7 chair has agreed to establish an informal liaison w/ CCSDS.

SEA, on behalf of CCSDS, has agreed to that liaison and a joint meeting and telecons have been held.


Cross Area WG / BOF Issues

• Information Architecture (IA) elements becoming more important to other groups• SLE (data dictionaries, XML schemas, …)• CSS (SMWG) and MOIMS (NavWG & IPR WG) use of XML schemas• XML Standards and Guidelines SIG• SANA, various new and future registries

• IAWG needs on-going coordination with MOIMS Information Packaging and Registries (IPR).• Much more partnering is occurring with a focus on how to define

an information infrastructure (interfaces, specifications, architecture, components and best practices)

• Recommend that BoF be created for cross-cutting information infrastructure specification (registries, repositories) that gets participation from agency specialists as well as stakeholders


Cross Area WG / BOF Issues

• Security is a cross-cutting discipline that needs to be included in many other Areas and WGs.

• CESG is alerted that other Areas and WG should request support from the Security WG (in addition to the SecWG being proactive).

• We believe that the mandatory security section in documents will force the other Areas and WGs to seek out help.• Recommend that existing security section be

strengthened, waivers are too lenient

• Propose a SecWG overview briefing at the Spring ‘06 meeting opening plenary to cover everyone at one time• Security 101 and SecWG initiatives within CCSDS


SEA Other Issues & Concerns

• SGIA participation from WGs & IOAG agencies • Major issue if IOAG operational organizations do not

provide technical point of contact (TPOC)• Delta-DOR end to end process and flow

• Study has been initiated, NASA/JPL & ESA participation• CESG Agreement on definition of “Recommended

Practice”• A “Litmus Test” has been created by CESG

• XML Standards & Guidelines SIG resources• Support from other WGs for short term appears adequate

• SANA coordination with other WGs & agencies• Need to get the charter released and approved

• Data Management / Data Accountability BoF and where to do the work


BACKUP SLIDES


SAWG Executive Summary

1. Review of the RASDS document was done by the SAWG members and an expert on RM-ODP. Some issues were found but the WG agreed to necessary updates to the document.

2. It was agreed to send the updated RASDS document, based on the discussion at this meeting, to CESG and CMC for approval as a Recommended Practice document.

3. It was also agreed that the work on development of a RASDS formal model should be continued in some form (preferably by a CCSDS BoF/WG) leveraging the liaison relationship established with the ISO/IEC group developing “UML for ODP.”


SecWG Executive Summary

• Attendees from CNES, BNSC (telecon), NASA/GSFC, NASA/ Langley (telecon), ESA/ESOC (a first!), DLR, NASA/JPL & NASA/GRC (brief)

• Discussed and revised the SecWG Security Architecture documents

• Discussed and accepted proposals for CCSDS standards for:• Encryption (AES w/ min 128-bit key, additional algorithms allowed)• Authentication/integrity (Digital Signature Standard for public key-based

authentication, HMAC-SHA1 for MAC-based authentication)

• Discussed CNES approach to developing security requirements and their use of the EBIOS tool

• Discussed the development of:• Security Policy Framework• Information Security Planning Guide

- Potential usage of Common Criteria to develop mission Protection Profiles

• Discussed issues from NASA DSWG – identity management, SCID “exposure” on SANA (aggregates of public data may be a security risk).


IAWG Executive Summary

• Six people attended the IA meeting from JPL, GSFC, Marshall and CSA.

• The draft Reference Architecture for Space Information Management Green Book was discussed • Included the updates from the NASA TIM that occurred in

August. • Established much improved convergence between GSFC and

JPL with respect to the relationship between IA and OAIS. • Chapter 2, the information model, requires more substantial

updates than Chapter 3, the functional information management components.

• The afternoon IAWG session was canceled in lieu of the meeting on XML best practices (XSG SIG)


SEA Cross Area Coordination

• CSS:• SGIA role TBD • Transport security• Use of SecWG authentication & access control

• MOIMS:• Coordination between Information Packaging and Registries & Information

Architecture, discussions on-going• SGIA role TBD • Discussions of development of DM / DA BoF effort needed• Use of RASDS in SM&C doc• Use of SecWG authentication and security framework

• SIS:• Relationships among AMS, MTS, and MOIMS S/C Mon & Con protocol (SM&C) • SGIA role TBD • Uplink & downlink network layer security

• SLS:• SGIA role TBD • Uplink & downlink link & physical layer security

• SOIS:• SGIA role TBD• Uplink, downlink & on-board security


SEA Resolutions to be Sent to CESG and Then to CMC

RESOLUTION 1 : SEA-SecWG-R-0509-001

Considering that:1. The SecWG sent a resolution up requesting that every CCSDS document contain a

standard security section. The return flow indicated this was passed. 2. More than a year later we learn that the language was changed (only blue books, resource

problems allow provide a waiver, etc). And recognizing that:

1. CCSDS must ensure that security is adequately addressed in our standards,

2. The current wording in the CMC resolution is too weak,

The AREA resolves that:

The Standard security section should require that include ALL CCSDS documents, not just Blue Books, include the mandatory security section, and …

The security section be mandatory and not waived based on resources.

ACTION ITEM 1: SEA-SecWG-A-0509-001

Request that the CMC update policy on security section to make it mandatory on all CCSDS documents and to remove simple “resources waiver”. At minimum this should apply to Blue, Orange, and Magenta Books.


Outcomes of Earlier SEA Resolutions Sent to CESG


Request that the CMC review SecWG scope and requirements for cross support and interoperability with agency security policy experts.


Request that the CMC provide adequate resources to the SEA / SecWG to accomplish development of encryption and authentication/integrity standards which are fully adapted to the space community and have been profiled, implemented, and tested before becoming CCSDS recommended standards no later than the end of April 2005.

ACTION ITEM 3: SEA-A-0504-001

Request that the CESG develop a clear and unambiguous process for submitting and resolving RIDs no later than the end of May 2005.

ACTION ITEM 1: SEA-A-0504-002

Request that the areas that have developed or are developing reference architectures or service interfaces to provide them to the SAWG and work with the SAWG to ensure that they and their cross area interactions are correctly understood and properly documented.


Points to Ponder

Things should be as simple as possible,But no simpler.

Albert Einstein

Internet Robustness Principle - Be liberal in what you accept, and conservative in what you send.

Jon Postel, RFC 793 & 1122

Though ambition in itself is a vice,Yet it is often a source of virtue.

Old Chinese proverb(from Hsu’s Fortune Cookie)

Suggested for consideration by all ADs and WG chairs

Documents

PS 1 26 October 2005 SEA Area Report Reston, VA, USA, 26 October 2005