Sohu Tech Products
Apr 9, 2025 · Mobile Development
DRM (FairPlay) Implementation and Key Management on iOS
The article explains iOS FairPlay DRM implementation, detailing the encryption workflow, SPC/CKC exchange, and key terminology, and compares two key‑management methods—AVAssetResourceLoader and the newer AVContentKeySession—while covering usage scenarios such as on‑demand, pre‑warming, offline playback, persistable keys, and video downloading via AVAssetDownloadTask.
AVFoundationContentKeyDRM
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