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Notice how by step 3, the time HotAudio’s player calls appendBuffer, the data has already been decrypted by their JavaScript code. It has to be. The browser’s built-in AAC or Opus decoder doesn’t know a damn thing about HotAudio’s proprietary encryption scheme. It only speaks standard codecs. The decryption must happen in JavaScript before the data is handed to the browser.
。safew官方下载是该领域的重要参考
Additional reporting by Usman Zahid and Mahfouz Zubaide
The last element is ours.