1. Friet: An Authenticated Encryption Scheme with Built-in Fault Detection 2020 AuthenticatedEncryption Eurocrypt SymmetricKey
    Thierry Simon, Lejla Batina, Joan Daemen, Vincent Grosso, Pedro Maat Costa Massolino, Kostas Papagiannopoulos, Francesco Regazzoni, and Niels Samwel
    [View PDF on eprint.iacr.org]
    [Show BibTex Citation]

    @misc{cryptoeprint:2020:425,
    author = {Thierry Simon and Lejla Batina and Joan Daemen and Vincent Grosso and Pedro Maat Costa Massolino and Kostas Papagiannopoulos and Francesco Regazzoni and Niels Samwel},
    title = {Friet: An Authenticated Encryption Scheme with Built-in Fault Detection},
    howpublished = {Cryptology ePrint Archive, Report 2020/425},
    year = {2020},
    note = {\url{https://eprint.iacr.org/2020/425}},
    }

In this work we present a duplex-based authenticated encryption scheme Friet based on a new permutation called Friet-P. We designed Friet-P with a novel approach for cryptographic permutations and block ciphers that takes fault-attack resistance into account and that we introduce in this paper. In this method, we build a permutation fC to be embedded in a larger one, f . First, we define f as a sequence of steps that all abide a chosen error-correcting code C, i.e., that map C-codewords to C-codewords. Then, we embed fC in f by first encoding its input to an element of C, applying f and then decoding back from C. This last step detects a fault when the output of f is not in C. We motivate the design of the permutation we use in Friet and report on performance in soft- and hardware. We evaluate the fault-detection capabilities of the software and simulated hardware implementations with attacks. Finally, we perform a leakage evaluation. Our code is available at https://github.com/thisimon/Friet.git.

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