Knock: Convert ACSM files to PDF/EPUBs with one command on Linux

Re:Knock: Convert ACSM files to PDF/EPUBs with one command o... by metadat on Sunday October 09, 2022 @10:43PM (#33147261)

What is an ASCM file? In forty plus years I've not encountered this extension.

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Re:Knock: Convert ACSM files to PDF/EPUBs with one command o... by Vespasian on Sunday October 09, 2022 @10:55PM (#33147311)

It's a "voucher" for an epub/pdf protected by Adobe DRM.

After purchasing a book "you" get an ASCM file and use it to

a) download an encrypted file from a content server

and b) get the encryption keys protected via a PKS system.

This was cracked a few years ago and apparently Adobe/vendors never upgraded.

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Re:Knock: Convert ACSM files to PDF/EPUBs with one command o... by Tajnymag on Monday October 10, 2022 @06:10AM (#33149641)

Wow, that sounds even worse than I imagined.

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Re:Knock: Convert ACSM files to PDF/EPUBs with one command o... by knowhy on Monday October 10, 2022 @02:18AM (#33148363)

I was provided a ascm file when purchasing a ebook at Google Play.

I was able to get a refund when it turned out that there is no offici way to convert it on a Linux system.

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