Titlebook: Advances in Cryptology – EUROCRYPT 2012; 31st Annual Internat David Pointcheval,Thomas Johansson Conference proceedings 2012 International

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978-3-642-29010-7International Association for Cryptologic Research 2012

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Aortic and Mitral Valve Surgery,er and widely deployed computers also had a great impact on cryptology, allowing modern cryptography to become a practical tool. Today, both computers and cryptology are not only practical, but they have became ubiquitous tools. In truth, computing devices incorporating cryptography features range f

Pander

Celine L. Bauwens,Mark D. Ungrinf that the protocol meets its stated goals under certain assumptions. However, it is often difficult to assess what such proofs really mean in practice especially if the proof is non-tight, the underlying assumptions are contrived, or the security definition is in the single-user setting. We will pr

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Kareen L.K. Coulombe,Lauren D. Black IIIa generalization of a construction proposed by Even and Mansour in 1991. This construction builds a block cipher . from an .-bit permutation . and two .-bit keys .. and .., setting .. Here we consider a (natural) extension of the Even-Mansour construction with . permutations ..,…,.. and . + 1 keys,

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Emil Ruvinov,Yulia Sapir,Smadar Cohenon (used e.g. in Triple-DES), which was proved to have roughly . + min {./2, ./2} bits of security when instantiated with ideal block ciphers with key length . and block length ., at the cost of three block-cipher calls per message block..This paper presents a new practical key-length extension sche

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https://doi.org/10.1007/978-1-4612-3008-3hile the well established UC framework for concurrent security is impossible to achieve in this setting, meaningful relaxed notions of concurrent security have been achieved..The main contribution of our work is a new technique useful for designing protocols in the concurrent setting (in the plain m