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FSE
2008
Springer

Efficient Reconstruction of RC4 Keys from Internal States

13 years 7 months ago
Efficient Reconstruction of RC4 Keys from Internal States
Abstract. In this paper we present an efficient algorithm for the retrieval of the RC4 secret key, given an internal state. This algorithm is several orders of magnitude faster than previously published algorithms. In the case of a 40-bit key, it takes only about 0.02 seconds to retrieve the key, with success probability of 86.4%. Even if the algorithm cannot retrieve the entire key, it can retrieve partial information about the key. The key can also be retrieved if some of the bytes of the initial permutation are incorrect or missing.
Eli Biham, Yaniv Carmeli
Added 26 Oct 2010
Updated 26 Oct 2010
Type Conference
Year 2008
Where FSE
Authors Eli Biham, Yaniv Carmeli
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