ISO/IEC TS 23078-2:2020 Information technology — Specification of DRM technology for digital publicationsPart 2: User key-based protection

This document defines a technical solution for encrypting resources in digital publications (especially EPUB) and for securely delivering decryption keys to reading systems, included in licenses tailored to specific users. It also defines a simple passphrase-based authentication method for reading systems to verify the license and access the encrypted resources of such digital publications.