Craig Ringer wrote: > The usage rights feature used for this is documented in the PDF > Reference 1.6 section 8.3 > > The signature will be to restrict who can use this feature. Quoting the > reference: "The signature is used to validate that the permissions have > been granted by a bonafide granting authority." In a quick skim read I > didn't see any definition of what such a granting authority might be, > but the answer is probably "Adobe and major partners". A quick bit of > searching of Adobe's site finds a lot of information about how to use > their products (the Java interface to their libraries, the LifeCycle > products, Acrobat, etc) to manage usage rights, but nothing on how an > external developer might be able to do it. > > In other words, enabling form saving in Adobe Reader probably costs big > bucks. > This is of interest, and worth figuring out. It's not clear to me that this is entirely in Adobe's interest to restrict this usage -- encourages someone to develop a more open forms format.
I've always felt that this is one of the big ways that proprietary formats are very wrong -- I take *my* data, *my* creative input, and it gets held hostage in a format I do not have complete rights over -- very very wrong. Greg
