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Security Researcher Cracks Google's Widevine DRM (L3 Only) - Slashdot

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The L3 protection level of Google's Widevine DRM technology has been cracked by a British security researcher who can now decrypt content transferred via DRM-protected multimedia streams. ZDNet's Catalin Cimpanu notes that while this "sounds very cool," it's not likely to fuel a massive piracy wave because "the hack works only against Widevine L3 streams, and not L2 and L1, which are the ones that carry high-quality audio and video content." From the report: Google designed its Widevine DRM technology to work on three data protection levels --L1, L2, and L3-- each usable in various scenarios. According to Google's docs, the differences between the three protection levels is as follows:

L1 - all content processing and cryptography operations are handled inside a CPU that supports a Trusted Execution Environment (TEE). L2 - only cryptography operations are handled inside a TEE. L3 - content processing and cryptography operations are (intentionally) handled outside of a TEE,...(continued)

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