AVContentKeyRecipient A protocol for requiring decryption keys for media data. Declarationprotocol AVContentKeyRecipient TopicsVerifying decryption key requirementsmayRequireContentKeysForMediaDataProcessingcontentKeySession(_:didProvide:) RelationshipsConforming TypesAVFragmentedAssetAVURLAsset See AlsoManaging content key recipientscontentKeyRecipientsaddContentKeyRecipient(_:)removeContentKeyRecipient(_:)