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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Polytopes in the Fiat-Shamir with Aborts Paradigm
Speaker : Hugo Beguinet - ENS Paris / Thales
The Fiat-Shamir with Aborts paradigm (FSwA) uses rejection sampling to remove a secret’s dependency on a given source distribution. Recent results revealed that unlike the uniform distribution in the hypercube, both the continuous Gaussian and the uniform distribution within the hypersphere minimise the rejection rate and the size of the proof of knowledge. However, in practice both these[…]-
Cryptography
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Asymmetric primitive
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Mode and protocol
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Post-quantum Group-based Cryptography
Speaker : Delaram Kahrobaei - The City University of New York