Lecture Notes in Computer Science vol:3006 pages:222-233
SAC 2003 date:August 14-15, 2003
SNOW 2.0 was developed by Johansson and Ekdahl in 2002, as a modified version of SNOW 1.0. In this paper we present the application of linear (masking) attack to SNOW 2.0 stream cipher. Our attack requires 2(225) output words (2(230) bits) and 2(225) steps of analysis to distinguish the output of SNOW 2.0 from a truly random bit sequence.