- ogsa-authz-wg - lists.ogf.org

Fwd: GridWorld/GGF18 Program Schedule
by Alan Sill 07 Sep '06

07 Sep '06

FYI Begin forwarded message: > From: "Alterman, Peter \(NIH/CIT\) [E]" <altermap(a)mail.nih.gov> > Date: August 30, 2006 1:49:30 PM CDT > To: "Alan Sill" <Alan.Sill(a)ttu.edu> > Cc: "Miriam Heller" <mheller(a)nsf.gov>, "Jeffrey Huskamp" > <jhuskamp(a)umd.edu>, "Darcy Quesnel" <darcy.quesnel(a)canarie.ca> > Subject: RE: GridWorld/GGF18 Program Schedule > > I've asked Cheryl Jenkins to accompany me; she runs the Operational > Authority. > > ---------------------------------------------- > Peter Alterman, Ph.D. > Asst. CIO, EAuthentication, NIH and > Chair, Federal PKI Policy Authority > Cell: 301-252-8846 > > > -----Original Message----- > From: Alan Sill [mailto:Alan.Sill@ttu.edu] > Sent: Tuesday, August 29, 2006 1:31 PM > To: Alterman, Peter (NIH/CIT) [E] > Cc: Alan Sill; Miriam Heller; Jeffrey Huskamp; Darcy Quesnel > Subject: Re: GridWorld/GGF18 Program Schedule > > Peter, > > Based on this we have decided to swap the schedule for the CAOps and > IGTF sessions at GGF18 to enable scheduling the IGTF session (in > which the discussion on the Bridge CA working group will take place) > to be on Wednesday the 13th. The schedule should be updated to make > this change within a few days. > > We should discuss what, if any, input from the Federal bridge effort > we can bring into this session beyond the presentation you have > already given. As you know, I am interested in the technical details > of how the Federal bridge works, especially with respect to path > validation and credential verification services. Is there someone > you could bring to the meeting Wed. (1:30 - 3:00) who could cover > these details in a discussion? > > Thanks! > > Alan > > On Aug 14, 2006, at 1:45 PM, Alterman, Peter ((NIH/CIT)) [E] wrote: > >> I'm out of town on the 14th. The 13th is the only day that seems >> possible for me, Alan. >> >> ---------------------------------------------- >> Peter Alterman, Ph.D. >> Asst. CIO, EAuthentication, NIH and >> Chair, Federal PKI Policy Authority >> Cell: 301-252-8846 >> >> -----Original Message----- >> From: Alan Sill [mailto:Alan.Sill@ttu.edu] >> Sent: Friday, July 28, 2006 12:35 PM >> To: Miriam Heller; Alterman, Peter (NIH/CIT) [E]; Jeffrey Huskamp >> Cc: Alan Sill >> Subject: GridWorld/GGF18 Program Schedule >> >> Here is the link for the Open Grid Forum (soon to be renamed from >> GGF) conference, as promised. The dates are September 11-14, 2006 in >> Washington, DC. >> >> The schedule includes several sessions on identity management. >> >> Topic: >> GGF18 Program Schedule >> >> http://www.ggf.org/gf/event_schedule/ >> >> Alan > > Alan Sill > TIGRE Senior Scientist > High Performance Computing Center > TTU > > ==================================================================== > : Alan Sill, Texas Tech University Office: Admin 233, MS 4-1167 : > : e-mail: Alan.Sill(a)ttu.edu ph. 806-742-4350 fax 806-742-4358 : > ==================================================================== Alan Sill TIGRE Senior Scientist High Performance Computing Center TTU ==================================================================== : Alan Sill, Texas Tech University Office: Admin 233, MS 4-1167 : : e-mail: Alan.Sill(a)ttu.edu ph. 806-742-4350 fax 806-742-4358 : ====================================================================

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Re: [OGSA-AUTHZ] Teleconference
by David Chadwick 07 Sep '06

07 Sep '06

Hi Blair Don't worry. Your input at the meeting will be sufficient. Some people are not able to attend GGF, so the telecom is much more important to them than to yourself. regards David. Blair Dillaway wrote: > David, > > While I'd like to participate in this call, I can't make the scheduled > time. I do have some feedback on the revised charter document. I can > provide that at GGF next week. > > Regards, > Blair Dillaway > >> -----Original Message----- >> From: owner-ogsa-authz(a)ggf.org >> [mailto:owner-ogsa-authz@ggf.org] On Behalf Of David Chadwick >> Sent: Friday, September 01, 2006 2:37 PM >> To: ogsa Authz >> Subject: [OGSA-AUTHZ] Teleconference >> >> Dear WG members >> >> Now that the holidays are over, I am proposing to hold a >> teleconference next week on either Thursday 7 Sept or Friday >> 8th Sept to discuss the documents currently on the table. Can >> you please indicate which day you prefer. >> >> This teleconference will give people who are not attending >> the next GGF meeting to have their say prior to the meeting >> in Washington the following week. I know that Yuri has a >> number of issues he wants to discuss. >> >> The time will be 2pm UK, 3pm Europe, 11pm Tokyo, 9am New >> York, 6am California. >> >> Regards >> >> David >> >> -- >> >> ***************************************************************** >> David W. Chadwick, BSc PhD >> Professor of Information Systems Security The Computing >> Laboratory, University of Kent, Canterbury, CT2 7NF Skype >> Name: davidwchadwick >> Tel: +44 1227 82 3221 >> Fax +44 1227 762 811 >> Mobile: +44 77 96 44 7184 >> Email: D.W.Chadwick(a)kent.ac.uk >> Home Page: http://www.cs.kent.ac.uk/people/staff/dwc8/index.html >> Research Web site: http://sec.cs.kent.ac.uk Entrust key >> validation string: MLJ9-DU5T-HV8J PGP Key ID is 0xBC238DE5 >> >> ***************************************************************** >> >> > -- ***************************************************************** David W. Chadwick, BSc PhD Professor of Information Systems Security The Computing Laboratory, University of Kent, Canterbury, CT2 7NF Skype Name: davidwchadwick Tel: +44 1227 82 3221 Fax +44 1227 762 811 Mobile: +44 77 96 44 7184 Email: D.W.Chadwick(a)kent.ac.uk Home Page: http://www.cs.kent.ac.uk/people/staff/dwc8/index.html Research Web site: http://sec.cs.kent.ac.uk Entrust key validation string: MLJ9-DU5T-HV8J PGP Key ID is 0xBC238DE5 *****************************************************************

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Conference Call Notification
by David Chadwick 06 Sep '06

06 Sep '06

Dear WG The next Conference Call Is Confirmed. Details below *Conference Details* Scheduled Conference Date: 07 September 2006 Scheduled Start Time: 14:00 British Summer Time (15.00 Europe, 23.00 Japan, 9.00 US Eastern, 6.00 US West Coast) Scheduled End Time: 15:55 British Summer Time Scheduled # of Participants: 10 Type of Conference: Web-Scheduled Standard Primary Dial-in Number: 0844.888.8888 (UK 5p National Rate) Alternate Dial-in Numbers: If your conference includes Participants located outside of the U.K., you can choose more than one dial-in phone number. As long as everyone participating in your conference enters the same Participant Access Code, they will be joined together. # +44.870.088.5706 (For Callers Outside of the U.K.) # 01805.004.102 (For Callers in Germany) Participant Access Code: 20060907 Conference Controls: # Conversation Mode (all Participants can be heard) # Entry Chimes - Enabled # Exit Chimes - Enabled Note: The Organiser Access Code is only necessary for use of enhanced conference controls. Otherwise, you can just use the Participant Access Code. E-mail Invitations: 4 Sent Subject: OGSA-AUTHZ WG call Draft Agenda 1. Roll Call 2. Agenda Bashing 3. Revised Charter 4. Functional Components document 5. CVS Requirements document 6. AOB 7. Date of next call nvitation Recipients: David Chadwick d.w.chadwick(a)kent.ac.uk OGSA-AUTHZ WG LIST ogsa-authz-wg(a)ogf.org Von Welch vwelch(a)ncsa.uiuc.edu yuri demch(a)chello.nl /Conference Booked by David Chadwick on 05 September 2006 at 07:59/ See you there! David -- ***************************************************************** David W. Chadwick, BSc PhD Professor of Information Systems Security The Computing Laboratory, University of Kent, Canterbury, CT2 7NF Skype Name: davidwchadwick Tel: +44 1227 82 3221 Fax +44 1227 762 811 Mobile: +44 77 96 44 7184 Email: D.W.Chadwick(a)kent.ac.uk Home Page: http://www.cs.kent.ac.uk/people/staff/dwc8/index.html Research Web site: http://sec.cs.kent.ac.uk Entrust key validation string: MLJ9-DU5T-HV8J PGP Key ID is 0xBC238DE5 *****************************************************************

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Fwd (andre.merzky@ogf.org): Mailing List Changes
by Andre Merzky 04 Sep '06

04 Sep '06

Hi OGSA AUTHZ WG, your mailing list has been renamed from ogsa-authz to ogsa-authz-wg, to get it in sync with the general list naming scheme (for some reason, your list was almost the only one which did not fit the scheme...). Mails to the old list address are, however, forwarded to the now list. We would like to ask you to start the new list address. Thanks, I hope that this renaming does not cause any inconvenience, Andre. ----- Forwarded message from Andre Merzky <andre.merzky(a)ogf.org> ----- > Date: Sun, 3 Sep 2006 21:03:56 +0200 > From: Andre Merzky <andre.merzky(a)ogf.org> > To: wg-all(a)ogf.org > Subject: Mailing List Changes > > Sorry for duplicates > > ------------------------------------------------------------ > > As of yesterday, all GGF/OGF mailing lists are migrated to > the ogf domain. They are now managed by mailman, the web > interface is available at > > http://www.ogf.org/mailman/listinfo > > With that migration, all list can be now reached via > > <list>@ogf.org > > The old @ggf.org addresses will be available for some time, > but are bound to disappear eventually - please start using > the ogf addresses! > > A number of lists have changed their names: > > ggf-it --> ogf-it > ggf-office --> ogf-office > ggf-proc-wg --> ogf-proc-wg > ggf-sponsors --> ogf-sponsors > ggf-tutorials --> ogf-tutorials > ggf-compute --> ogf-compute > ggflistowners --> ogflistowners > ggfstudentmembers --> ogfstudentmembers > > Postings to the old list names get forwarded to the new ones. > > With the migration we have also been able to fix the archives > - you may have noticed that list archiving stopped sometime > in mid June. Well, now its working again, and all mails from > June to now have been added to the archive. > > The list archives can be found at: > > http://www.ogf.org/archives/<list> > > If you are an list administrator, and would like to receive > the list admin password, please contact postmaster(a)ogf.org. > In general, however, we tried to map the old majordomo > settings to the mailman settings, in terms of privacy etc, > so no or little changes should be required from your side. > > The spam avoidance policy has been changed to some extent, > and is somewhat stricter than before. Please let us know if > you experience any trouble with that. > > On all questions in respect to mailing lists, or mails in > general, please contact postmaster(a)ogf.org. > > Best regards, > > Andre. -- "So much time, so little to do..." -- Garfield

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Teleconference
by David Chadwick 01 Sep '06

01 Sep '06

Dear WG members Now that the holidays are over, I am proposing to hold a teleconference next week on either Thursday 7 Sept or Friday 8th Sept to discuss the documents currently on the table. Can you please indicate which day you prefer. This teleconference will give people who are not attending the next GGF meeting to have their say prior to the meeting in Washington the following week. I know that Yuri has a number of issues he wants to discuss. The time will be 2pm UK, 3pm Europe, 11pm Tokyo, 9am New York, 6am California. Regards David -- ***************************************************************** David W. Chadwick, BSc PhD Professor of Information Systems Security The Computing Laboratory, University of Kent, Canterbury, CT2 7NF Skype Name: davidwchadwick Tel: +44 1227 82 3221 Fax +44 1227 762 811 Mobile: +44 77 96 44 7184 Email: D.W.Chadwick(a)kent.ac.uk Home Page: http://www.cs.kent.ac.uk/people/staff/dwc8/index.html Research Web site: http://sec.cs.kent.ac.uk Entrust key validation string: MLJ9-DU5T-HV8J PGP Key ID is 0xBC238DE5 *****************************************************************

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[ogsa-wg] Proposed agenda for Aug. 28th call
by Hiro Kishimoto 28 Aug '06

28 Aug '06

Hi all, The following is a proposed agenda for OGSA-WG telecon on Aug. 28th Monday from 5pm to 7pm (CDT). The dial-in number for Monday; US: +1 718 3541071 (New York) or +1 408 9616509 (San Jose) UK: +44 (0)207 3655269 (London) Japan: +81 (0)3 3570 8225 (Tokyo) PIN: 4371991 Screen share service will be provided. URL: http://ogsa.glance.net Session key: 0828 See more explanation: http://www-unix.gridforum.org/mail_archive/ogsa-wg/2004/06/msg00077.html 1) Early discussion (20 min) Note taker assignment Roll call Telecon minutes approval (Aug. 21st) - https://forge.gridforum.org/sf/go/doc13750?nav=1 Action Items status review (see the bottom of this email) Agenda bashing 2) OGSA F2F meeting agenda update (20 min) F2F agenda on Sep. 14 (Thur) and 15 (Fri) https://forge.gridforum.org/sf/go/wiki1555?nav=1 3) OGSA authorization call-out proposal review (Frank, 20 min) > - Frank is now consulting with people in GGF (David Chadwick, Von > Welch) on whether his approach can be defined within the AuthZ > group. If there is no agreement then he will accept the XACML > group's decision. David's "Functional Components of Grid Service Provider Authorisation Service Middleware" document - https://forge.gridforum.org/sf/go/doc13724?nav=1 4) Basic Security Profile PC review (Takuya, 30 min) Review Takuya's proposal. 5) Wrap up (10 min) AOB <*NEXT CALL*> https://forge.gridforum.org/sf/go/wiki1477?nav=1 Aug. 31 (Thu): EMS scenarios (Andreas and Steven) EMS & Data joint scenario (Allen, Dave Barry, Steven, and Andreas) Sep. 4 (Mon): No call (Labor Day) Sep. 7 (Thu): Roadmap (Chris), GGF18 prep (Tom and Hiro) <*ACTION ITEMS*> https://forge.gridforum.org/sf/go/wiki1569?nav=1 > From Aug. 21 call AI-0821a: Hiro to talk to Jun and CDDLM group about EGA & CDDLM comparison proposal. AI-0821b: Hiro to talk to Jem about EGA & OGSA glossary comparison > From Aug. 17 call AI-0817a: Dave Berry and Jay Unger will approach groups (GIN, Globus, etc) that have implemented practical grids and start a discussion on how they handle data: - how data is treated as a resource that can be scheduled - how transfers are modeled - how files are advertised - how applications find files (query, by knowledge,?) AI-0817b: Stephen Davey will do a cut down parameter sweep scenario focusing on the JSDL+BES+Data Transfer/Staging service > From Aug. 10 call AI-0810a: Donal to look into the relation of the EPS and CDL (retrieval, update, etc). (Eventually this should probably become a separate scenario.) > From Aug. 3 call AI-0803e: Jun will provide an example of the CDL mechanism and why using ID/IDREF is not a good idea. AI-0803f: Jun will update the CDL document to remove the Environment variables > > From July 20 F2F - EGR-WG (Ravi) will contact Geoffrey Fox and invites him to contribute use cases. - Andreas to go through the minutes and formulate a reply mail to Geoffrey on each artifact covered in these minutes. <postponed> - Steve McGough & Andreas to do a mapping from the current JSDL elements / terminology into the new information model structure (Proposed split into Description and Requirements) (from July 18th F2F, By GGF18 as original discussed.) ---- Hiro Kishimoto

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draft minutes for OGSA-Authz call-out proposal review (Aug 11)
by Hiro Kishimoto 28 Aug '06

28 Aug '06

OGSA Teleconference - 11 August 2006 ==================================== * This is first half of Aug. 11 call * * Participants Andrew Grimshaw (UVa) Jay Unger (IBM) Frank Seibenlist (ANL) Steven Newhouse (OMII) Takuya Mori (NEC) Marvin Theimer (Microsoft) Jem Treadwell (HP) Duane Merrill (UVa) David Chadwick (U of Kent) Andreas Savva (Fujitsu) Donal Fellows (Uom) Minutes: Takuya Mori * OGSA authorization call-out proposal review (Frank, 20 min) Reference: "Functional Components of Grid Service Provider Authorisation Service Middleware" https://forge.gridforum.org/sf/go/doc13724?nav=1 David presented a draft document, "Functional Components of Grid Service Provider Authorisation Service Middleware", which was sent to the OGSA-AuthZ and OGSA-WG list on Aug 9. (The document was based on discussions between Von, Frank and David.) David introduced functional components, Policy Enforcement Point (PEP), Credential Validation Service (CVS) and PDP (Policy Decision Point) and showed four types of interactions between the components (See Fig.1 to Fig.4 in the document). David proposed to define two protocols, one for CVS and the other for PDP. The followings are the points of his proposal. - CVS is used to validate credentials and to issue valid attributes of Access Requestors. - CVS is passed authenticated name and credentials. - CVS determines if the credential is trust worthy and returns valid attributes. - An administrator manages two types of rules, auhtz decision rules and rules to resolve trust relationships - CVS makes use of XACML policy query interface, but it is not necessarily be an XACML policy engine behind the interface. - CVS is needed to separate authentication and authorization. Various questions and answers arouse during the presentation and some major points made clear in the discussion were: - The two protocols are intended to support all the configuration shown in the figures - Revisions of the two "OGSI" profiles are also in the scope of current activities of the OGSA-AuthZ-WG. - Defining attributes values (terms and semantics) is not in the scope of current activities of the OGSA-AuthZ-WG, but in its future scope. The discussion were suspended until Aug 28 due to the running out of the meeting time. The followings are some interactions during the discussion. * The scope of the work (1) Q: Does the two protocols cover all the configurations shown in the figures? The protocols shown in the figures look different. A: Yes, the both protocols can cover all the configuration. The current OGSA-Authz profiles can handle this kind of interactions. Q: The current profiles are not "OGSA" profiles. These are "OGSI" profiles. A: The difference between "OGSI" and "OGSA" is small for OGSA-Authz profiles. Revisions of these two profiles are also on the table. * How to define service I/F of applications Q: As an application desginer, do I need to choose appropriate one? * long interactions were taken place which Takuya couldn't perfectly follow, but if Takuya understood well, the answer from the authz wg is: * A: Interafces of applications will not be affected. It is the middleware which speaks the protocols. Authorization is taken place behind the infrastructure. * The scope of the work (2) Q: The architecture for authorization has not clearly been defined. What the OGSA-AuthZ-WG are going to define? Do we need to define all the comopnents? Various terms and semantics also needs to be defined for attributes and policies. These also should be standardized. A: The OGSA-AuthZ-WG did the similar things in the past, the credential formats and terms over the SAML Attribute Assertion and the X.509 Attribute Certs. Q: It covers a different interop level - only attribute name or type level - not the values. A: The OGSA-AuthZ-WG focuses only on the interface level. David doesn't have a need to define values. (at this moment?) The WG needs to define them later in the future. -- Hiro Kishimoto

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[ogsa-wg] Proposed agenda for Aug. 10th call
by Hiro Kishimoto 09 Aug '06

09 Aug '06

Hi all, The following is a proposed agenda for OGSA-WG telecon on Aug. 10th Thursday from 8:30am - 10:30am (CDT). Dial-in numbers for Thursday: Free: +1-888-452-0308 Intl/Toll: +1-484-644-0505 PIN: 71815 Screen share service will be provided. URL: http://ogsa.glance.net Session key: 0810 See more explanation: http://www-unix.gridforum.org/mail_archive/ogsa-wg/2004/06/msg00077.html 1) Early discussion (20 min) Note taker assignment Roll call Telecon minutes approval (Aug. 3rd) - https://forge.gridforum.org/sf/go/doc13718?nav=1 Action Items status review (see the bottom of this email) Agenda bashing 2) OGSA authorization call-out proposal review (Frank, 20 min) > - Frank is now consulting with people in GGF (David Chadwick, Von > Welch) on whether his approach can be defined within the AuthZ > group. If there is no agreement then he will accept the XACML > group's decision. 3) Basic Security Profile PC review (Takuya, 30 min) Takuya brings text proposal for the following PCs. >> Reviewed public comments and Takuya's proposed replies >> 1. Add text explaining that the Secure Channel profile is not >> required by all ogsa services. The introduction is probably a >> good place for this. >> 2. [Basic-Security-Profile] usage. The term is defined in the >> document. Takuya to check whether such special terms are used >> consistently and that they stand out. Refer to the WSRF BP for a >> similar example. >> 3. Ciphersuites: Agreed that it important to list acceptable >> ciphers. >> - As a first step Takuya will list up available ones (from the >> WS-I BSP); select the ones that are in common use; and then >> select the ones that are considered sufficiently safe. >> - Review the list at the next BSP teleconf >> 4. Multiple keys in keyinfo field? >> - Takuya to talk to Von in order to understand the use case for >> multiple keys; and will propose a resolution at the next BSP >> teleconf. 4) EMS scenarios (Andreas and Steven, 30 minutes) Andreas will send out revised version before the call. 5) Wrap up (10 min) AOB <*NEXT CALL*> Aug. 14 (Mon): Roadmap (Chris) Aug. 17 (Thu): Info/data model (Ellen and Fred), EMS and data joint scenarios (Allen and Steven) Aug. 21 (Mon): Aug. 24 (Thu): CDDLM joint (Jun, Dejan, and Hiro) Aug. 28 (Mon): Security (Takuya and Frank) Aug. 31 (Thu): EMS scenarios (Andreas and Steven) Sept. 4 (Mon): No call (Labor Day) Sept. 7 (Thu): Roadmap (Chris), GGF18 prep (Tom and Hiro) Telecon schedule: https://forge.gridforum.org/projects/ogsa-wg/document/telecon_schedule/ <*ACTION ITEMS*> > From Aug. 3 call AI-0803a: Hiro to look into an option for a second EMS/Data call on Sep 7. Tentative; needs confirmation with likely participants. AI-0803c: Ellen to book the IBM facility on Thursday afternoon AI-0803d: Hiro to divide GGF18 B2B F2F survey into three periods: Thursday afternoon, Friday morning and afternoon. AI-0803e: Jun will provide an example of the CDL mechanism and why using ID/IDREF is not a good idea. AI-0803f: Jun will update the CDL document to remove the Environment variables > From July 20 F2F - Andreas and Hiro to revise the EMS scenario document (i.e. examples) so that proposal 2 is fulfilled + Andreas will merge Hiro's updates into the next draft - EGR-WG (Ravi) will contact Geoffrey Fox and invites him to contribute use cases. - Andreas to go through the minutes and formulate a reply mail to Geoffrey on each artifact covered in these minutes. <postponed> - Steve McGough & Andreas to do a mapping from the current JSDL elements / terminology into the new information model structure (Proposed split into Description and Requirements) (from July 18th F2F, postpone until Aug. 17) -- Hiro Kishimoto

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Conference call
by David Chadwick 01 Aug '06

01 Aug '06

Dear all I am proposing to set up a conference call to discuss the latest charter and the CVS requirements doc that have been deposited on grid forge. The alternative dates are Wed 2 Aug and Thurs 3 Aug. The preferred time is 2pm BST, 3pm European, 11pm Japan, 9am Eastern, unless someone from Pacific time wishes to take part and then it should be one hour later. Can people please circulate the list with their preferred dates/times thanks David -- ***************************************************************** David W. Chadwick, BSc PhD Professor of Information Systems Security The Computing Laboratory, University of Kent, Canterbury, CT2 7NF Skype Name: davidwchadwick Tel: +44 1227 82 3221 Fax +44 1227 762 811 Mobile: +44 77 96 44 7184 Email: D.W.Chadwick(a)kent.ac.uk Home Page: http://www.cs.kent.ac.uk/people/staff/dwc8/index.html Research Web site: http://sec.cs.kent.ac.uk Entrust key validation string: MLJ9-DU5T-HV8J PGP Key ID is 0xBC238DE5 *****************************************************************

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CVS Requirements document
by David Chadwick 27 Jul '06

27 Jul '06

Hi all I have just uploaded to grid forge a document describing the use cases and requirements for a Credential Validation Service. It can be downloaded from here https://forge.gridforum.org/sf/go/projects.ogsa-authz/docman.root.authz_ser… This document will be discussed at our next teleconference and at GGF18, along with the revised charter. The next document I intend to produce is the functional components document showing the different ways in which the functional components of authorisation decision making can plug together regards David -- ***************************************************************** David W. Chadwick, BSc PhD Professor of Information Systems Security The Computing Laboratory, University of Kent, Canterbury, CT2 7NF Skype Name: davidwchadwick Tel: +44 1227 82 3221 Fax +44 1227 762 811 Mobile: +44 77 96 44 7184 Email: D.W.Chadwick(a)kent.ac.uk Home Page: http://www.cs.kent.ac.uk/people/staff/dwc8/index.html Research Web site: http://sec.cs.kent.ac.uk Entrust key validation string: MLJ9-DU5T-HV8J PGP Key ID is 0xBC238DE5 *****************************************************************

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