Encryption

A secretKey of ByteArray. Must be the same value for the same content when reading from a DataSource and writing to aandroidx.media3.datasource.DataSink. Only necessary when the host app has downloaded the content to ensure we are using the same key when playing back that downloaded content.

A decryptedHeader of ByteArray if this was used as an offlining strategy in the host app. Only necessary when the host app has downloaded the content in this specific way to ensure we are getting the correctly decrypted header when playing back that downloaded content.