Paper 2019/225

Leakage Resilience of the Duplex Construction

Christoph Dobraunig and Bart Mennink


Side-channel attacks, especially differential power analysis (DPA), pose a serious threat to cryptographic implementations deployed in a malicious environment. One way to counter side-channel attacks is to design cryptographic schemes to withstand them, an area that is covered amongst others by leakage resilient cryptography. So far, however, leakage resilient cryptography has predominantly focused on block cipher based designs, and insights in permutation based leakage resilient cryptography are scarce. In this work, we consider leakage resilience of the keyed duplex construction: we present a model for leakage resilient duplexing, derive a fine-grained bound on the security of the keyed duplex in said model, and map it to ideas of Taha and Schaumont (HOST 2014) and Dobraunig et al. (ToSC 2017) in order to use the duplex in a leakage resilient manner.

Available format(s)
Secret-key cryptography
Publication info
Published by the IACR in ASIACRYPT 2019
duplexspongesecurity proofleakage resilience
Contact author(s)
b mennink @ cs ru nl
2019-08-28: revised
2019-02-27: received
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Creative Commons Attribution


      author = {Christoph Dobraunig and Bart Mennink},
      title = {Leakage Resilience of the Duplex Construction},
      howpublished = {Cryptology ePrint Archive, Paper 2019/225},
      year = {2019},
      note = {\url{}},
      url = {}
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