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Jellby · 04-13-2009, 05:08 AM

It's maybe difficult to directly change the text of a .prc file, but it's quite easy to "uncompress" it, change the text (it's basically HTML) and re-create the .prc.

It's not much harder to change the text in a PDF, although the changes must be limited, like changing "ash" into "ass". Unless the PDF is created as images... in which case one can extract the images, alter them with a graphics program and re-create the PDF.

If identifying the one correct authorized official version is the trouble, I'd suggest publishing a hash (such as MD5 or SHA) in the webpage, as it is done with software. Or maybe encoding with a PGP private key.

04-13-2009, 05:08 AM	#2
Jellby frumious Bandersnatch Posts: 7,557 Karma: 19500001 Join Date: Jan 2008 Location: Spaniard in Sweden Device: Cybook Orizon, Kobo Aura	It's maybe difficult to directly change the text of a .prc file, but it's quite easy to "uncompress" it, change the text (it's basically HTML) and re-create the .prc. It's not much harder to change the text in a PDF, although the changes must be limited, like changing "ash" into "ass". Unless the PDF is created as images... in which case one can extract the images, alter them with a graphics program and re-create the PDF. If identifying the one correct authorized official version is the trouble, I'd suggest publishing a hash (such as MD5 or SHA) in the webpage, as it is done with software. Or maybe encoding with a PGP private key.