Short Signatures from Regular Syndrome Decoding in the Head

ePrint Report: Short Signatures from Regular Syndrome Decoding in the Head

Eliana Carozza, Geoffroy Couteau, Antoine Joux

We introduce a new candidate post-quantum digital signature scheme from the regular syndrome decoding (RSD) assumption, an established variant of the syndrome decoding assumption which asserts that it is hard to find $w$-regular solutions to systems of linear equations over $\mathbb{F}_2$ (a vector is regular if it is a concatenation of $w$ unit vectors). Our signature is obtained by introducing and compiling a …

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