Once Adobe Digital Editions has been activated, you will then need to authorize NOOK with your Adobe ID: 1. Connect your NOOK via USB Cable to a compatible USB port on your computer (Make sure to use the USB Cable that is specific to your device). 5) Strong markup capabilities. 6) PDF and EPUB support, a reflow-centric XHTML-based format. 7) Supports loans of eBooks. Visit the Adobe Digital Editions Library, where you can browse and download free eBooks and digital magazines, including full-length short stories and non-fiction workers. Download Adobe Digital Editions 1.7.2. If you would like to contribute screenshots for Adobe Digital Editions 1.7.2: click here. Note: Screenshots shown in the Compatibility Center are often representative of compatibility on both Mac. Kindle ebooks (Files from Kindle for Mac/PC and eInk Kindles, but not rented Kindle ebooks). Ebooks using Adobe Digital Editions DRM. (including Kobo, Sony and Google ePubs downloaded to ADE) 3. Barnes and Noble ePubs (Need to input the hash key for removing DRM) 4. Adobe Digital Editions (v2.0.1) PDFs 5. Mobipocket ebooks 6.
Readers,My original post, which is preserved below for historical purposes but has its text struck through, was wrong in certain important details and quickly outdated in others, for which I humbly apologize. It was an attempt to help you cope with the release of the 1.7.2 update to Adobe Digital Editions. ADE 1.7.2 changed the way a crucial decryption key is stored when the ADE activation takes place — when, that is, you 'authorize' your computer to use your Adobe ID and password.
Here is the latest (hopefully correct) information, which is fleshed out in iPhone: Reading Adobe/EPUB eBooks:

Either the ineptkey v.4.3 Python script for Windows users or the new ineptkeymac v.1 script for Mac users will produce an adeptkey.der output file that can be input to version 2 of the ineptepub script. v.2 has been the 'standard' ineptepub version for a long time now, and it is again. The purpose of ineptepub is to use the key generated by either ineptkey or ineptkeymac to decrypt Adobe eBooks.
Windows or Mac users can alternatively use ineptepub_auto_version3.pyw (v.3 of ineptepub) or aineptepub.pyw (v.4.1 of ineptepub, which is different from v.4), both of which decrypt whole folders/directories of Adobe eBooks rather than just a single Adobe/EPUB file.
Version 4 of ineptepub does not work with ineptkey v.4.3, the latest ineptkey version, but only with ineptkey v.4.2, which is already obsolete ... as ineptepub v.4 is likewise already obsolete.
While ineptkey v.4.2 was current, it generated an adeptkey4.der (not adeptkey.der) file in a different internal format than adeptkey.der. That file was intended for ineptepub v.4. When ineptkey v.4.3 came out, I mistakenly told readers in my original post below to input its output file to ineptepub v.4, which led to 'index out of range' errors.
Any adeptkey.der file that was generated prior to ADE version 1.7.2 is no longer usable with eBooks downloaded with ADE 1.7.2. Even though it's the right format for ineptepub v.2, it will produce a 'problem decrypting session key' error when used with ADE 1.7.2-downloaded books. It will work only with books downloaded with ADE 1.7.1 or earlier.
Users that have an old adeptkey.der file that was generated while ADE 1.7.1 was active can, if they wish, hold onto it and use it to decrypt books that they downloaded before the ADE 1.7.2 update. Or they can re-download those books in ADE 1.7.2 and use a newly generated adeptkey.der file, from ineptkey v.4.3 or ineptkeymac v.1, to decrypt the newly downloaded books in any version of ineptepub other than v.4. I recommend the latter course, as it avoids having to keep track of which books were downloaded with which ADE versions.
Again, sorry for all the mix-ups,
Eric
The original post:
Error: problem decrypting session key
Download Adobe Digital Editions On Mac

Adobe Digital Editions 2.0.1 Download
Programs » Entertainment » Hobbies & Leisure
Adobe Digital Editions offers an engaging way to view and manage eBooks and other digital publications. With Adobe Digital Editions, you can download and purchase digital content that can be read online and offline. You can transfer copy-protected eBooks from your personal computer to other computers or devices. You can organize your eBooks in a regular library and comment on the pages. The program also supports eBook formats with industry standard, including PDF / A and EPUB. Adobe Digital Editions Key Features: 1) The user interface is designed for digital reading. 2) Fast and free download. 3) Standalone installer. 4) Supports Sony Reader. 5) Strong markup capabilities. 6) PDF and EPUB support, a reflow-centric XHTML-based format. 7) Supports loans of eBooks. Visit the Adobe Digital Editions Library, where you can browse and download free eBooks and digital magazines, including full-length short stories and non-fiction workers.

Adobe Digital Editions 1.7.2
Download Adobe Digital Editions Nook
Check out Adobe Digital Editions on video :
Freeware
Manufacturer
Adobe Systems Incorporated
Date added:
30-11--0001
End User License Agreement (EULA)
Download Adobe Digital Editions 1.7.2 Mac Os
Windows XP, Vista & 7
Size
5.3 Mb
How to uninstall
