Introduction New Attack Extensions conclusion

Introduction New Attack Extensions conclusion Second Preimage Attacks on Dithered Hash Functions Elena Andreeva1 Charles Bouillaguet2 Pierre-Alain Fouque2 Jonathan J. Hoch3 John Kelsey4 Adi Shamir2,3 Sebastien Zimmer2 1K.U. Leuven, ESAT/COSIC, Leuven-Heverlee, Belgium 2École Normale Supérieure, Paris, France 3Weizmann Institute of Science, Rehovot, Israel 4NIST, Gaithersburg, MD, USA EUROCRYPT 2008

• given m1


• h1 h2 h3


• hash functions


• collision attack


• leuven-heverlee


• attack extensions


• functions