ACSM file extension

Below you'll find information on
known file type that uses the .ACSM file extension.

Adobe Content Server Message File
Extension Added: November, 15th 2010
Last Updated: November, 15th 2010

Category:Encrypted Files
Popularity: (Common)
Used by Adobe Digital Editions, these files are used to encrypt eBooks (electronic books) to ensure only the intended client can read the requested document.

Digital Editions creates a .ACSM file containing a unique user ID before sending the file to an Adobe Content Server where it is used to create an encrypted version of the required document. This document is then sent to the client and cannot be opened by another installation of Digital Editions.