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https://issues.apache.org/jira/browse/TIKA-3666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17484950#comment-17484950
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Konstantin Gribov commented on TIKA-3666:
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When I looked into MS AD RMS some time ago it wasn't supported in Apache POI
unfortunately. AFAIK POI 5.2.0 still doesn't support it.
I'm not sure if support should be added there first or if some support could be
added to Tika. Anyway some test files are must have.
> Detect and indicate file encrypted with Rights Management Service RMS/IRM
> -------------------------------------------------------------------------
>
> Key: TIKA-3666
> URL: https://issues.apache.org/jira/browse/TIKA-3666
> Project: Tika
> Issue Type: Improvement
> Components: metadata
> Reporter: August Valera
> Priority: Major
>
> Rights Management Service (RMS), implemented in MS Office as Information
> Rights Management (IRM), allows organizations to set file permissions that
> are stored within the file. In most cases, this will result in the file
> getting a new extension (with a prefix p, such as {{.txt}} becoming
> {{{}.ptxt{}}}), but in the case of MS Office and PDF files, which support
> this natively, the implementation results in the file contents being
> encrypted without any extension change.
> h4. Current behavior
> Running such files through Tika produces results as if it was an empty file
> ran through {{DefaultParser}} and {{{}OfficeParser{}}}.
> h4. Expected behavior
> Extract more metadata about necessary permissions to view (if possible), and
> throwing {{EncryptedDocumentException}} as is the case with Office files
> encrypted in the more traditional manner.
> Reference:
> [https://docs.microsoft.com/en-us/azure/information-protection/rms-client/clientv2-admin-guide-file-types#supported-file-types-for-classification-and-protection]
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