Abstract: SOSEMANUK is a new synchronous software-oriented stream cipher with a variable-length key between 128 and 256 bits. In this paper, a guess and determine (GD) attack on the cipher is introduced with a computational complexity of O(2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">192</sup> ), requiring only 7 keystream words. The results show that the cipher does not provide full security when the key of the length more than 192 bits is used.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 5
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