| Gregor Leander |  |
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Date de l'exposé : 16 décembre 2011
A study of SP networks for block ciphers from a provable security point of view
In this talk I will deal with the concept of key-alternating ciphers in a provable security setting. Given the degree of confidence in properly designed key-alternating ciphers on the practical side (e.g. with AES approved for the encryption of secret and top secret data in the USA), it is even more surprising that there has been no provable setting developed so far for the design of key-alternating ciphers on the theoretical side. Nobody seems to have even formulated the problem of whether the key-alternating cipher makes sense from this point of view. (this is joint work with Andrey Bogdanov , Lars R. Knudsen, Francois-Xavier Standaert , John Steinberger , Elmar Tischhauser - to appear at EUROCRYPT 2012)
