Quote:
Originally Posted by eschwartz
And AFAIK you can copy a loaned EPUB from one ADE install to another without problems, which doesn't have anything to do with a hash.
|
I don't know if you can copy it from one ADE install to another - I only have one installation of ADE (2.x). Might work with older/newer versions.
Quote:
Originally Posted by eschwartz
Not to mention, it makes no sense to not embed that information in the encrypted EPUB itself.
|
I could replicate the other information (date and time, user uuid, library uuid, url for license server, ...) for a borrowed book needed in activation.xml (either by comparing it with xml files that were stored by ADE on my computer or from other loaned books with entries in the file) apart from one: some hash (or better: accumulation of more or less arbitrary ASCII characters) in "signature" tags. Without it, my Kobo wouldn't open the file. I can't remember if the PRS-T1 uses a similar approach. When I copied the original signature back into the activation.xml, I could open the book again. So, I assumed it might be necessary for the authorization process and gave up.
I'm not sure if all libraries do this in the same way. My local library does not use Overdrive but Onleihe to provide its service. It's even possible that side-loading used to work on the PRS-T1 before they introduced the possibility to "hand in" a borrowed book before the end of the loan period some time ago.