Description
We present a new tweakable block cipher family SKINNY, whose goal is to compete with NSA recent design SIMON in terms of hardware/software performances, while proving in addition stronger security guarantees with regards to differential/linear attacks.<br/> SKINNY has flexible block/key/tweak sizes and can also benefit from very efficient threshold implementations for side-channels protection. Regarding performances, it outperforms all known ciphers for ASIC round-based implementations and offers very competitive bit-sliced software implementations in CTR mode (as theoretically predicted since SKINNY has the smallest total number of AND/OR/XOR gates used for encryption process).<br/> Additionally, we introduce MANTIS, a dedicated variant of SKINNY for low-latency implementations, that constitutes a very efficient solution to the problem of designing a tweakable block cipher for memory encryption. MANTIS competes with PRINCE in latency and area, while being enhanced with a tweak input.<br/> Joint work with: C. Beierle, S. Kölbl, G. Leander, A. Moradi, T. Peyrin, Y. Sasaki, P. Sasdrich, S.M. Sim To appear in CRYPTO 2016
Next sessions
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Oblivious Transfer from Zero-Knowledge Proofs (or how to achieve round-optimal quantum Oblivious Transfer without structure)
Speaker : Léo Colisson - Université Grenoble Alpes
We provide a generic construction to turn any classical Zero-Knowledge (ZK) protocol into a composable oblivious transfer (OT) protocol (the protocol itself involving quantum interactions), mostly lifting the round-complexity properties and security guarantees (plain-model/statistical security/unstructured functions…) of the ZK protocol to the resulting OT protocol. Such a construction is unlikely[…]-
Cryptography
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