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PCT:
OpenDocument Protected |
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| nfoWorks > pct> Protected Change-Tracking (provisional cover) | |
Publication Progress Report: Protected Change-TrackingDennis E. Hamilton DChanges '14 Proceedings of the 2nd International Workshop on (Document) Changes: modeling, detection, storage and visualization, 2014 presented at the DChanges 2014 Workshop Abstract. Change-tracking of digital documents leads to document alteration in some manner. Protected Change-Tracking (PCT) is a response to the question, "How can one protect word-processing documents against alteration, verifiable by digital signature, and make signed amendments that are verified to be allowed modifications of the original document?" A genealogical model is identified that preserves the digital signature of the ancestor and each change-tracked descendant. PCT achieves a subset of genealogical cases having practical simplicity. Applicability to documents in ODF format is sketched.
1. Introduction Provisional StatusOpenDocument Protected Change-Tracking (PCT) is proposed for protecting OpenDocument documents against alteration, verified by digital signature, while allowing signed amendments that are verified modifications of the original document. Having signed additions to unmodified signed originals is intended for turnaround-document applications using ODF Text documents and Spreadsheets such as request forms, expense reports, insurance claims, purchase orders, certain kinds of electronic ballot, and suitable contract/agreement forms. The initial formal presentation on PCT was at the DChanges 2014 Workshop, with the final publication, downloadable above, revised as the authoritative version in the subsequent proceedings. Current activity is on proof-of-concept demonstration based on an already-sketched high-level approach. This is a provisional cover for project material, providing an early entry point to the work. There will be expanded material as the proof-of-concept work progresses. Meanwhile, supporting analysis and exploratory work is also captured on-line. Precursor material can found and viewed in additional areas of the nfoWorks site.
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