Okular, Debian, and copy restrictions
Posted Jun 2, 2009 4:39 UTC (Tue) by foom
In reply to: Okular, Debian, and copy restrictions
Parent article: Okular, Debian, and copy restrictions
It seems pretty much like DRM to me.
DRM generally uses encryption, with the distinguishing feature of having the decryption key widely
known to all viewer software/hardware in the world. By thus controlling access to the encrypted
data by requiring use of the special software with the decryption key, the content creators prevent
users from accessing the content in objectionable ways. (or so they'd like to think).
This is exactly what the copy-prohibit flag in PDF is doing, except that the default decryption key is
actually documented in the PDF format documentation! That part is a little unusual for DRM, and I
suppose might make ignoring this flag not trigger the anti-DRM-bypass laws.
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