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Cryptographic Primitives for Mobile Networks (second part)

Daniel Loebenberger (cosec - b-it)

Thursday  15 July 2010, 15.00, b-it  1.25 (cosec meeting room)

This talk is the second part of a two-talk series that discusses the security
of cryptographic primitives used in mobile communication systems such as
UMTS, GSM, and GPRS. The focus of this talk are related key attacks in
general and in particular the related key attacks on the block cipher Kasumi
given in 2010 by Orr Dunkelman, Nathan Keller, and Adi Shamir. It breaks
Kasumi with only four related keys, 226 data, 230 bytes of memory and 232

We give an overview of the attack and analyze possible implications on the
practical security of third generation mobile communication systems.


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