Titlebook: Topics in Cryptology -- CT-RSA 2014; The Cryptographer‘s Josh Benaloh Conference proceedings 2014 Springer International Publishing Switze

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Automatic Search for Differential Trails in ARX Ciphersoriginally proposed for DES-like ciphers, to the class of ARX ciphers. To the best of our knowledge this is the first application of Matsui’s algorithm to ciphers that do not have S-boxes. The tool is applied to the block ciphers TEA, XTEA, SPECK and RAIDEN. For RAIDEN we find an iterative character

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Group Signatures with Message-Dependent Opening in the Standard Model identify the origin of any signature if the need arises. In some applications, such a tracing capability can be excessively strong and it seems desirable to restrict the power of the authority. Sakai . recently suggested the notion of group signatures with message-dependent opening (GS-MDO), where

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Decentralized Traceable Attribute-Based Signaturestributed among different authorities rather than relying on a single central authority. By specializing our model to the single attribute authority setting, we overcome some of the shortcomings of the existing model for the same setting..Our second contribution is a generic construction for the prim

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P2OFE: Privacy-Preserving Optimistic Fair Exchange of Digital Signatures a long time. Optimistic Fair Exchange (OFE) is an efficient solution to this problem, in which a semi-trusted third party named . is called in to resolve a dispute if there is one during an exchange between Alice and Bob. Recently, several extensions of OFE, such as Ambiguous OFE (AOFE) and Perfect

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