Haraka v2 is a secure and efficient short-input (256 or 512 bits) hash function, designed to be very fast on modern platforms which support AES-NI. One of the main applications for such a design is the use in hash-based signature schemes like XMSS and SPHINCS. For more information see our paper.
The performance is measured in cycles per byte (cpb) processed. The following numbers correspond to Intel Skylake using the optimized implementation.
|Haraka256||0.72 cpb||0.63 cpb||0.63 cpb|
|Haraka512||1.02 cpb||0.72 cpb||0.72 cpb|
SPHINCS is a post-quantum secure hash-based digital signature scheme. The performance of SPHINCS strongly correlates with the performance of the underlying hash function and can be significantly improved by using an optimized construction.
This optimized implementation has the following perfomance figures on Intel Skylake:
Haraka v2 - Efficient Short-Input Hashing for Post-Quantum Applications
Stefan Kölbl and Martin M. Lauridsen and Florian Mendel and Christian Rechberger https://eprint.iacr.org/2016/098