Updating openbsd

All our attacks against WPA2 use a novel technique called a key reinstallation attack (KRACK): In a key reinstallation attack, the adversary tricks a victim into reinstalling an already-in-use key.

Depending on the network configuration, it is also possible to inject and manipulate data.Each time it receives this message, it will reinstall the same encryption key, and thereby reset the incremental transmit packet number (nonce) and receive replay counter used by the encryption protocol.We show that an attacker can force these nonce resets by collecting and replaying retransmissions of message 3 of the 4-way handshake.Our detailed research paper can already be downloaded.As a proof-of-concept we executed a key reinstallation attack against an Android smartphone.

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