Extracting the Information Unique Identifier is a similar process, it's one of the properties of the
ICE protected files
ICE uses HTML to encapsulate encrypted files and ICT tag is available on the initial comment:
Non-RMS protected PDF files
Classification is stored in document info dictionary (DID) and can be obtained from
/RightsWATCHMark at the end of the PDF file:
The classification level is encoded using base64 which is trivial to decode, eg:
- this only applies to public (non-encrypted) files, meaning only a few levels need to be handled this way;
- the Unique Information Identifier for public files is always the same (00000000-0000-0000-0000-000000000000), meaning the tag has exactly the same value for any file classified with the same level.
Non-RMS protected image files
Part of image metadata for TIFF, PNG, JPEG and GIF files. Windows Explorer does provide mechanisms to access it.
Automated way to get classification