PDF permits the use of encryption as a means of restricting access or (re-)use of content. This may range from documents that can only be opened after providing a password, to disabling specific functionality (e.g. printing, copying content).
- Content may become inaccessible if passwords are not known (even though "cracking" is often technically possible, institutions may not be legally permitted to do this)
- Printing / copy restrictions may complicated any future preservation actions
How to assess whether a particular file is affected by this. Includes tool link(s) + concise description of how we can get the required information from this tool. Use XPath expressions if tool produces output in XML format, e.g. see below:
|Tool||Affected if expression returns True|
|Jpylyzer||"/jpylyzer/isValidJP2 = 'False'"|
Recommendations on what action(s) to pursue in case file is affected by this problem. Optional.
Links to example files, preferrably from OPF Format Corpus, e.g. like this:
- http://www.opf-labs.org/format-corpus/jp2k-test/resolution/balloon_aware.jp2 - Sample file Aware 3.19 (Capture Resolution)
References to literature, etc.