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New RC4 Encryption Attacks Reduces Plaintext Recovery Time

Jul 17

msm1267 writes: Two Belgian security researchers from the University of Leuven have driven new nails into the coffin of the RC4 encryption algorithm. A published paper, expected to be delivered at the upcoming USENIX Security Symposium next month in Washington, D.C., describes new attacks against RC4 that allow an attacker to capture a victim’s cookie and decrypt it in a much shorter amount of time than was previously possible. The paper “All Your Biases Belong To Us: Breaking RC4 in WPA-TKIP and TLS,” written by Mathy Vanhoef and Frank Piessens, explains the discovery of new biases in the algorithm that led to attacks breaking encryption on websites running TLS with RC4, as well as the WPA-TKIP, the Wi-Fi Protected Access Temporal Key Integrity Protocol.


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