New version of DRM removal tools ("DeDRM") - Page 84

hollowpoint · 03-03-2021, 08:21 PM

Quote:

Originally Posted by DoctorOhh

With the release of DeDRM 7.1.0 I finally upgraded my calibre and tested it with a new book I bought from Amazon, and it worked fine.

Same. Just rebuilt my Win10 Pro box from scratch, reinstalled Calibre/DeDRM clean, works great on a couple new books.

Have not tested edge cases yet. For Kindle, I'm just importing new books off my PW so I don't have to bother sorting out which older version of Kindle-for-PC software I need in order for the DRM and format conversion tools to work.

For ebooks from ADE-based stores (like Google Play): Has anyone confirmed which version of ADE reader you need to have installed locally, to work with this new version of the DRM tools? Last time I bought an ADE book, I still had to use ADE v. 2.0. That version is so old and harder to find downloads, I started keeping an archived copy of the installer. The current ADE version is 4.5.11, the concern is at some point it may not be possible to get the older versions that work with our DRM tools any longer.

DNSB · 03-03-2021, 11:49 PM

Quote:

Originally Posted by hollowpoint

For ebooks from ADE-based stores (like Google Play): Has anyone confirmed which version of ADE reader you need to have installed locally, to work with this new version of the DRM tools? Last time I bought an ADE book, I still had to use ADE v. 2.0. That version is so old and harder to find downloads, I started keeping an archived copy of the installer. The current ADE version is 4.5.11, the concern is at some point it may not be possible to get the older versions that work with our DRM tools any longer.

I've tested DeDRM with versions of ADE up to 4.5.11. The question is the Adobe Content Server configuration for Adobe's hardened DRM. One textbook site is using the hardened DRM with no fallback, other sites I have tested are not using the hardened DRM so no difference in which version of ADE you use. See the attached image for the ACS 4/5/6 matrix with the Mandatory and resource level DRM bits.

hollowpoint · 03-04-2021, 01:08 AM

^Thx, good info. Will give 4.5 a try next time I get an ADE book.

lkmiller · 03-04-2021, 04:55 AM

With ADE 2.0.1, you won't be able to download a book with the hardened DRM. With ADE 3 and up, you won't know until you can't DeDRM it.

JSWolf · 03-04-2021, 05:31 AM

Quote:

Originally Posted by lkmiller

With ADE 2.0.1, you won't be able to download a book with the hardened DRM. With ADE 3 and up, you won't know until you can't DeDRM it.

I agree 100% that ADE 2.0.1 is the version you should install. I have ADE 2.0.1 installed with Windows 10. I've not had a problem with the new hardened DRM.

hollowpoint · 03-04-2021, 10:38 AM

Quote:

Originally Posted by lkmiller

With ADE 2.0.1, you won't be able to download a book with the hardened DRM. With ADE 3 and up, you won't know until you can't DeDRM it.

Yep what I was afraid of.

So what's the deal with the 'hardened DRM', do we have a write-up or definitive thread on that somewhere? There's no way to DeDRM those?

rantanplan · 03-04-2021, 10:50 AM

Quote:

Originally Posted by JSWolf

I agree 100% that ADE 2.0.1 is the version you should install. I have ADE 2.0.1 installed with Windows 10. I've not had a problem with the new hardened DRM.

2.x is not an option for macOS users.

JSWolf · 03-04-2021, 11:30 AM

Quote:

Originally Posted by hollowpoint

Yep what I was afraid of.

So what's the deal with the 'hardened DRM', do we have a write-up or definitive thread on that somewhere? There's no way to DeDRM those?

No way to remove the DRM from the hardened DRM. But I don't think it's that much of an issue. If sites start forcing it on us, many people will stop buying from them.

maddz · 03-04-2021, 12:10 PM

Quote:

Originally Posted by rantanplan

2.x is not an option for macOS users.

If you are running Catalina or Big Sur, yes. Anything else it's fine. I'm running High Sierra on a 2017 MacBook Pro and it's fine; I did have Mojave briefly and I think it was still fine. Our new 27" iMac has Catalina; I won't be running ADE 2.0 on that.

I'm told it's possible to run old versions via a virtual machine.

John F · 03-04-2021, 01:16 PM

Quote:

Originally Posted by JSWolf

I agree 100% that ADE 2.0.1 is the version you should install. I have ADE 2.0.1 installed with Windows 10. I've not had a problem with the new hardened DRM.

I'm running ADE 4.5.10.x installed on Windows 10 and have not had a problem with the new hardened DRM. As has been pointed out many times, none of the main stream book stores are using the hardened DRM.

The sky is not falling.

jhowell · 03-04-2021, 02:35 PM

Quote:

Originally Posted by DNSB

One textbook site is using the hardened DRM with no fallback,

Do you mind mentioning the name of the site so that others can avoid it?

odamizu · 03-05-2021, 12:37 AM

Quote:

Originally Posted by DNSB

I've tested DeDRM with versions of ADE up to 4.5.11. The question is the Adobe Content Server configuration for Adobe's hardened DRM. One textbook site is using the hardened DRM with no fallback, other sites I have tested are not using the hardened DRM so no difference in which version of ADE you use. See the attached image for the ACS 4/5/6 matrix with the Mandatory and resource level DRM bits.

This is chart really fascinating. Thank you. But I'm having trouble interpreting the matrix.

I understand what the ACS version is.

The RMSDK relates to the ADE version?? And if so, what RMSDK does ADE 2.01 and ADE 4.x have?

And what does Fulfill vs Sideload Re-fulfill mean?

Thank you for any enlightenment

lkmiller · 03-05-2021, 04:49 AM

Quote:

Originally Posted by JSWolf

No way to remove the DRM from the hardened DRM. But I don't think it's that much of an issue. If sites start forcing it on us, many people will stop buying from them.

If it did become more common, someone would probably figure it out eventually.

DNSB · 03-05-2021, 11:44 AM

Quote:

Originally Posted by jhowell

Do you mind mentioning the name of the site so that others can avoid it?

If you are looking for textbooks, there is no way to avoid them.

DNSB · 03-05-2021, 12:00 PM

Quote:

Originally Posted by odamizu

This is chart really fascinating. Thank you. But I'm having trouble interpreting the matrix.

I understand what the ACS version is.

The RMSDK relates to the ADE version?? And if so, what RMSDK does ADE 2.01 and ADE 4.x have?

And what does Fulfill vs Sideload Re-fulfill mean?

Thank you for any enlightenment

ADE 4.x is based on RMSDK 11 while ADE 2.0.1 is based on RMSDK 9.2 if I remember correctly.

Fulfill is download to your computer for reading there. Sideload Re-fulfill would be copying the downloaded file from your computer to another authorized device (say an ereader or tabler) for reading there.

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03-04-2021, 01:08 AM	#1248
hollowpoint Groupie Posts: 155 Karma: 6672188 Join Date: Apr 2019 Device: Ipad Mini, Kindle PW5, Libra 2	^Thx, good info. Will give 4.5 a try next time I get an ADE book.

03-04-2021, 04:55 AM	#1249
lkmiller Laura Posts: 1,573 Karma: 23597272 Join Date: Nov 2009 Device: Kobo Sage, Kobo Elipsa, Nook Glowlight 4 Plus, Kindle Oasis 2	With ADE 2.0.1, you won't be able to download a book with the hardened DRM. With ADE 3 and up, you won't know until you can't DeDRM it.