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[多图]微软研发“无法破解的DRM”,已申请专利
发布日期:2007-09-11 13:44:52  稿源：
针对DRM处处失守的窘境,微软宣布成功研发了一个无法被破解的DRM媒体保护技术,并在9日成功将其转化为专利,号码为U.S. Patent 7,266,697.
微软宣称这种加密方式采用了军用级声音频谱识别,相当于给音乐加入了水印,无法去除,更无法被破解.
以下是专利解释图像,还是请对频谱与密码学熟悉的达人来解惑吧.
Audio production and distribution system.

Watermarking encoding system implemented at the content-provider end.
Watermarking detecting unit implemented at the client.
Flow chart of chess watermark encoding.

Graphs of an audio clip, illustrating variable starting positioning for watermark encoding.

Operating environment capable of implementing the stealthy audio watermarking technique invented by Microsoft.
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