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Improving Stateless Hash-Based Signatures
[chapter]
2018
Lecture Notes in Computer Science
We present several optimizations to SPHINCS, a stateless hash-based signature scheme proposed by Bernstein et al. in 2015: PORS, a more secure variant of the HORS few-time signature scheme used in SPHINCS; secret key caching, to speed-up signing and reduce signature size; batch signing, to amortize signature time and reduce signature size when signing multiple messages at once; mask-less constructions to reduce the key size and simplify the scheme; and Octopus, a technique to eliminate
doi:10.1007/978-3-319-76953-0_12
fatcat:g2u7geczxzap7omn57u6anfmgm