Attacking the IV Setup of Py and Pypy

  title={Attacking the IV Setup of Py and Pypy},
  author={Hongjun Wu and Bart Preneel},
In this paper we show that Py and Pypy are practically insecure due to the flaw in their IV setup. With about 2 IVs (with special difference between the IVs), there are two identical keystreams. 

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Pypy: Another Version of Py.

  • E. Biham, J. Seberry
  • Available at http://www
  • 2006
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