Encrypted Media Extensions encryption

Question

I understand the overview of EME but I can't seem to wrap my head on how that protect contents. Since the browser retrieve a key from the licensing server, what is stopping an authorized user from using that key to decrypt the content and redistribute the content to non-authorized user?

Could this be that HTTPS is slow that's why EME is introduce? Because EME can decrpyt a encrpyted video or video with only the key frames.

Answer 1

内容解密模块包含在浏览器中以处理密钥会话。