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Readium LCP is a open standard [citation needed] for a digital rights management (DRM) system for ebooks by Readium Foundation. It supports the EPUB publication format. It uses AES-256 encryption with SHA-2 hashing. It uses X.509 digital certificates. It has SDK for Swift and Kotlin.
The lawsuit in question, which was never cut and dry to begin with, was filed by Penguin and Simon & Schuster against Abbey House Media, a company that used to sell e-books for them.
Barnes & Noble uses DRM technology provided by Adobe, applied to EPUBs and the older PDB (Palm OS) format e-books. Amazon's DRM is an adaption of the original Mobipocket encryption and is applied to Amazon's .azw4, KF8, and Mobipocket format e-books. Topaz format e-books have their own encryption system. [106]
Calibre (pronounced cal-i-ber) is a cross-platform free and open-source suite of e-book software. Calibre supports organizing existing e-books into virtual libraries, displaying, editing, creating and converting e-books, as well as syncing e-books with a variety of e-readers.
The software supports EPUB and PDF (nonproprietary file format for reflowable text, or fixed layout e-books; respectively). It implements a proprietary scheme of digital rights management (DRM) which, since the version 1.5 release in May 2008, allows document sharing among multiple devices and user authentication via an Adobe ID.
Audible is an American online audiobook and podcast service that allows users to purchase and stream audiobooks and other forms of spoken word content. This content can be purchased individually or under a subscription model where the user receives "credits" that can be redeemed for content monthly and receive access to a curated on-demand library of content.
The restrictions imposed by FairPlay, mainly limited device compatibility, have sparked criticism, with a lawsuit alleging antitrust violation that was eventually closed in Apple's favor, and various successful efforts to remove the DRM protection from files, with Apple continually updating its software to counteract such projects.
A precursor to CDL was the "Digitize and Lend" program begun in 2011 by the Open Library, a program of the Internet Archive.Also in 2011, the basic principles of CDL were articulated by Michelle M. Wu [1] in her paper Building a Collaborative Digital Collection: A Necessary Evolution in Libraries. [2]