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» A New Distinguisher for Clock Controlled Stream Ciphers
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FSE
2005
Springer
117views Cryptology» more  FSE 2005»
14 years 4 months ago
A New Distinguisher for Clock Controlled Stream Ciphers
In this paper we present a distinguisher targeting towards irregularly clocked filter generators. The attack is applied on the irregularly clocked stream cipher called LILI-II. LI...
Håkan Englund, Thomas Johansson
WEWORC
2007
162views Cryptology» more  WEWORC 2007»
14 years 1 days ago
New Attacks on the Stream Cipher TPy6 and Design of New Ciphers the TPy6-A and the TPy6-B
The stream ciphers Py, Pypy and Py6 were designed by Biham and Seberry for the ECRYPT-eSTREAM project in 2005. The ciphers were promoted to the ‘Focus’ ciphers of the Phase II ...
Gautham Sekar, Souradyuti Paul, Bart Preneel
MYCRYPT
2005
Springer
187views Cryptology» more  MYCRYPT 2005»
14 years 4 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»
14 years 2 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
ISW
2007
Springer
14 years 5 months ago
Multiple Modular Additions and Crossword Puzzle Attack on NLSv2
NLS is a stream cipher which was submitted to eSTREAM project. A linear distinguishing attack against NLS was presented by Cho and Pieprzyk, which was called as Crossword Puzzle at...
Joo Yeon Cho, Josef Pieprzyk