1. LTAP protocol presentation
LTAP status
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation

2. LTAP protocol presentation
LTAP reminder
Very thin layer
Usable for many use cases
Record keeping
long term archive
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation

3. LTAP protocol presentation
Services
Basic service (treated)
Interaction between client and ONE server
Few and simple operations
Simple use/profile of protocol
Example: One target, one message, etc
Extended service (not treated in this doc)
For front ends and brokers (Encryption, splitting, proxies, …)
Can use the same protocol or overload
May add operations
Example CompleteTRANSFER from one archive to another
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation

4. LTAP protocol presentation
Transactions
Transaction based (asynchronous operation) borrowed from ebXML
Request
Acknowledge (technical)
Response (business)
Support for services
archive/status/verify/export/delete defined by service
Underlying authorization and transport services
SAML, SOAP, SSL, etc.
Transaction model almost stable
Artifacts are probably not necessary, identification via hash and long term URI seems sufficient.
French National Archive has defined OAIS like operations and services that map down the LTAP (without saying so)
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation

5. LTAP protocol presentation
Transactions
Asynchronous by need
Need to « wait » until evidence available
Implemented using polling via status function
Request, acknowledge, final result
Some clients may only need 1 function + status
Ex. Just archive
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation

6. LTAP protocol presentation
Basic functions
Archive – insert data in the archive
Status – determine status of archived data
Export – export archive data and evidence data
Delete – delete archive data and evidence data
Verify – demonstrate data integrity and authenticity
Question: Can Verify mapped to something in WEBDAV?
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation

7. LTAP protocol presentation
Status
Document version 01 out, still incomplete, next version is already advanced.
Small tool to allow automatic creation of asn1 and xsd modules was developped in the meantime.
Data structures not yet fully included from existing implementation
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation

8. LTAP protocol presentation
To be done
Result of Verify function?
Just a date?
An ERS?
How to add/handle metainformation?
Just « archive » them using existing long term reference.
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation

9. LTAP protocol presentation
General Information
Authors
Aleksej Jerman Blazic, SETCCE
Peter Sylvester, EDELWEB
Carl Wallace, ORIONSEC
July 2006
IETF 66 Montreal
Peter Sylvester
LTAP protocol presentation