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» Distinguishing Attacks on the Stream Cipher Py
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EUROCRYPT
2007
Springer
13 years 8 months ago
Differential Cryptanalysis of the Stream Ciphers Py, Py6 and Pypy
This paper shows that Py and Pypy are practically insecure. If one key is used with about 216 IVs with special differences, with high probability two identical keystreams will appe...
Hongjun Wu, Bart Preneel
FSE
2005
Springer
117views Cryptology» more  FSE 2005»
13 years 10 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
IWSEC
2009
Springer
13 years 11 months ago
Improved Distinguishing Attacks on HC-256
The software-efficient stream cipher HC-256 was proposed by Wu at FSE 2004. Due to its impressive performance, the cipher was also a well-received entrant to the ECRYPT eSTREAM com...
Gautham Sekar, Bart Preneel
IPL
2010
98views more  IPL 2010»
13 years 3 months ago
Distinguishing attacks on stream ciphers based on arrays of pseudo-random words
In numerous modern stream ciphers, the internal state consists of a large array of pseudo-random words, and the output key-stream is a relatively simple function of the state. In ...
Nathan Keller, Stephen D. Miller
MYCRYPT
2005
Springer
187views Cryptology» more  MYCRYPT 2005»
13 years 10 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