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EUROCRYPT
1999
Springer
14 years 12 hour ago
Improved Fast Correlation Attacks on Stream Ciphers via Convolutional Codes
Abstract. This paper describes new methods for fast correlation attacks, based on the theory of convolutional codes. They can be applied to arbitrary LFSR feedback polynomials, in ...
Thomas Johansson, Fredrik Jönsson
INDOCRYPT
2007
Springer
14 years 1 months ago
A Framework for Chosen IV Statistical Analysis of Stream Ciphers
Saarinen recently proposed a chosen IV statistical attack, called the d-monomial test, and used it to find weaknesses in several proposed stream ciphers. In this paper we generali...
Håkan Englund, Thomas Johansson, Meltem S&ou...
EUROCRYPT
2003
Springer
14 years 29 days ago
Algebraic Attacks on Stream Ciphers with Linear Feedback
A classical construction of stream ciphers is to combine several LFSRs and a highly non-linear Boolean function f. Their security is usually analysed in terms of correlation attack...
Nicolas Courtois, Willi Meier
MYCRYPT
2005
Springer
187views Cryptology» more  MYCRYPT 2005»
14 years 1 months ago
Distinguishing Attacks on T-Functions
Klimov and Shamir proposed a new class of simple cryptographic primitives named T-functions. For two concrete proposals based on the squaring operation, a single word T-function an...
Simon Künzli 0002, Pascal Junod, Willi Meier
FSE
2006
Springer
124views Cryptology» more  FSE 2006»
13 years 11 months ago
Improved Linear Distinguishers for SNOW 2.0
In this paper we present new and more accurate estimates of the biases of the linear approximation of the FSM of the stream cipher SNOW 2.0. Based on improved bias estimates we als...
Kaisa Nyberg, Johan Wallén