* @param high 结束索引
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.
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Bats in Churches
I learned that for 4-SAT, if clause to variable ratio is more than 10, the generated problems become difficult to solve, and the likelihood of formula to be SAT or UNSAT is close to 50%. So I generated 3 types of formulas: