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Okular, Debian, and copy restrictionsOkular, Debian, and copy restrictionsPosted Jun 2, 2009 4:39 UTC (Tue) by foom (subscriber, #14868)In reply to: Okular, Debian, and copy restrictions by ncm 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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Okular, Debian, and copy restrictions Posted Jun 2, 2009 4:58 UTC (Tue) by 0b11101 (guest, #57638) [Link]
DRM need not be as complicated as you elaborately explained. A quick read of the DCMA definitions of "copy protection systems" shows how broadly it can be defined. Just takes a copy right holder using some technology used to prevent some type of access.
http://thomas.loc.gov/cgi-bin/query/F?c105:6:./temp/~c105...
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