Accelerating SLH-DSA by Two Orders of Magnitude with a Single Hash Unit

ePrint Report: Accelerating SLH-DSA by Two Orders of Magnitude with a Single Hash Unit

Markku-Juhani O. Saarinen

We report on efficient and secure hardware implementation techniques for the FIPS 205 SLH-DSA Hash-Based Signature Standard. SLotH supports all 12 parameter sets of SLH-DSA. The configurable architecture contains Keccak/SHAKE, SHA2-256, and SHA2-512 cores, and can protect secret key material with side-channel secure PRF and Winternitz chains. We demonstrate that very significant performance gains can be obtained from hardware features that facilitate hash …

architecture dsa eprint report fips hardware hash implementation magnitude parameter report sha2 signature single standard techniques