Titlebook: Topics in Cryptology -- CT-RSA 2004; The Cryptographers‘ Tatsuaki Okamoto Conference proceedings 2004 Springer-Verlag Berlin Heidelberg 20

Mosaic

Related-Key Attacks on Triple-DES and DESX VariantsESX. First, we show that 2-key and 3-key triple-DES are susceptible to related-key . attacks. The only previously known such attacks are related-key . attacks on 3-key triple-DES. Second, we present a related-key differential attack on DESX+, a variant of the DESX with its pre- and post-whitening XO

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Periodic Properties of Counter Assisted Stream Ciphersthe purpose of providing additional complexity. We then apply the results to the recently proposed stream cipher Rabbit, and increase the lower bound on the internal state period length from 2. to 2.. With reasonable assumptions we illustrate that the period length of Rabbit is at least the period o

bleach

A Fast Correlation Attack via Unequal Error Correcting LDPC Codesrror protecting LDPC code from the LFSR output sequence. The unequal error protection allows to achieve lower bit-error probability for initial bits of the LFSR in compared to the rest of the output bits. We show that constructing the unequal error protecting code has also the advantage of reducing

embolus

,-Resilient Identity-Based Encryption in the Standard Modelie-Hellman (DDH) assumption. The scheme is provably secure in the . assuming the adversary can corrupt up to a maximum of . users adaptively. This is contrary to the Boneh-Franklin scheme which holds in the ..

corpuscle

A Generic Construction for Intrusion-Resilient Public-Key Encryptiontive attacker who can break into the user and base repeatedly and even simultaneously. Recently, a construction of an intrusion-resilient public-key encryption scheme based on specific algebraic assumptions has been shown [6]. We generalize this previous work and present a more generic construction

mechanism

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