Snow 3G is the backup encryption algorithm used in the mobile phone UMTS technology to ensure data confidentiality. Its design - a combiner with memory - is derived from the stream cipher Snow 2.0, with improvements against algebraic cryptanalysis and distinguishing attacks. No attack is known against Snow 3G today. In this paper, a fault attack against Snow 3G is proposed. Our attack recovers the secret key with only 22 fault injections.
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Debraize et al. (2009) studied this question.