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New GSM encryption cracked

Jan 15, 2010, 19:32 (0 Talkback[s])
(Other stories by Jaikumar Vijayan)

[ Thanks to An Anonymous Reader for this link. ]

"An encryption algorithm designed to protect calls on GSM phones has been broken by three cryptographers using only a dual-core, Intel -based Dell Latitude PC running Linux.

"In a just-released paper, the three researchers from the Weizmann Institute of Science in Rehovot, Israel, described a technique they developed called a "sandwich attack," which they used to derive the complete 128-bit key of the Kasumi encryption algorithm. Kasumi, otherwise known as A5/3, is the block cipher used to encrypt communications on 3G wireless networks."

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