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Predicting and Abusing WPA2/802.11 Group Keys - Mathy Vanhoef

33c3 - Security - 12/27/2016

We analyze the generation and management of WPA2 group keys. These keys protect broadcast and multicast Wi-Fi traffic. We discovered several issues and illustrate their importance by decrypting all group (and unicast) traffic of a typical Wi-Fi network.

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