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We improve on the best known cryptanalysis of the stream cipher
Py by using a hidden Markov model for the carry bits in addition operations
where a certain distinguishing event takes place, and cons...
New Weaknesses in the Keystream Generation Algorithms of the Stream Ciphers TPy and Py
New Weaknesses Keystream Generation Algorithms Stream Ciphers TPy Py
2008/8/21
The stream ciphers Py, Py6 designed by Biham and Seberry were promising candidates in
the ECRYPT-eSTREAM project because of their impressive speed. Since their publication in
April 2005, a number of...