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The Electronic Book Exchange (EBX) is a system that supports devices and software that use public-key cryptography to protect copyrighted and distributed electronic books (e-books).
The EBX Working Group, which includes major U.S. software organizations, develops e-book distribution standards and specifications designed to protect e-book authors, publishers and licensees.
EBX is part of the International Digital Publishing Forum (IDPF), formerly known as the Open eBook Forum. EBX is preferred by publishers that sell e-book reader software. Thus, publishers dominate the e-book market.
The uneven dominance of publishers, authors and e-book software manufacturers is not lost on certain consumer advocacy groups, such as the Free Software Foundation. However, EBX's history indicates that e-book users do not have an issue with the disproportionate power that EBX lends to large companies and copyright owners.