SQISignHD: New Dimensions in Cryptography

ePrint Report: SQISignHD: New Dimensions in Cryptography

Pierrick Dartois, Antonin Leroux, Damien Robert, Benjamin Wesolowski

We introduce SQISignHD, a new post-quantum digital signature scheme inspired by SQISign.
SQISignHD exploits the recent algorithmic breakthrough underlying the attack on SIDH, which allows to efficiently represent isogenies of arbitrary degrees as components of a higher dimensional isogeny. SQISignHD overcomes the main drawbacks of SQISign. First, it scales well to high security levels, since the public parameters for SQISignHD are easy to generate: the …

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