Take your MEDS: Digital Signatures from Matrix Code Equivalence
Take your MEDS: Digital Signatures from Matrix Code Equivalence
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DOI:
10.1007/978-3-031-37679-5_2
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发表时间:
2022
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通讯作者:
T. Chou;R. Niederhagen;Edoardo Persichetti;T. Randrianarisoa;Krijn Reijnders;Simona Samardjiska;Monika Trimoska
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文献类型:
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作者:
T. Chou;R. Niederhagen;Edoardo Persichetti;T. Randrianarisoa;Krijn Reijnders;Simona Samardjiska;Monika Trimoska
In this paper, we show how to use the Matrix Code Equivalence (MCE) problem as a new basis to construct signature schemes. This extends previous work on using isomorphism problems for signature schemes, a trend that has recently emerged in post-quantum cryptography. Our new formulation leverages a more general problem and allows for smaller data sizes, achieving competitive performance and great flexibility. Using MCE, we construct a zero-knowledge protocol which we turn into a signature scheme named Matrix Equivalence Digital Signature (MEDS). We provide an initial choice of parameters for MEDS, tailored to NIST’s Category 1 security level, yielding public keys as small as 2.8 kB and signatures ranging from 18 kB to just around 6.5 kB, along with a reference implementation in C.