haraka

README

haraka

A golang implementation of the Haraka v2 family of hash functions presented in:

Haraka v2 – Efficient Short-Input Hashing for Post-Quantum Applications

by Stefan Kolbl, Martin M. Lauridsen, Florian Mendel, and Christian Rechberger

https://eprint.iacr.org/2016/098.pdf

These functions are designed to be fast for fixed-length (512/256-bit) inputs on processors with AES instructions. A primary use case is for hash-based signatures in post-quantum cryptography. Note, that if your processor does not have AES instructions then the performance will be ~10x slower due to software emulation of the AES round function. Currently, AES instruction optimization is only implemented for amd64 processors.

AES-NI and software AES (Ref) benchmarks name time/op Haraka256-4 30.8ns ± 0% Haraka512-4 81.1ns ± 1% Haraka256Ref-4 469ns ± 0% Haraka512Ref-4 953ns ± 2%

Documentation

Overview

Package haraka implements the Haraka v2 family of hash functions presented in:

Haraka v2 – Efficient Short-Input Hashing for Post-Quantum Applications

by Stefan Kolbl, Martin M. Lauridsen, Florian Mendel, and Christian Rechberger

https://eprint.iacr.org/2016/098.pdf

These functions are designed to be fast for fixed-length (512/256-bit) inputs on processors with AES instructions. A primary use case is for hash-based signatures in post-quantum cryptography. Note, that if your processor does not have AES instructions then the performance will be ~10x slower due to software emulation of the AES round function. Currently, AES instruction optimization is only implemented for amd64 processors.

Index

• func Haraka256(output, input *[32]byte)
• func Haraka512(output *[32]byte, input *[64]byte)

Functions

func Haraka256

func Haraka256(output, input *[32]byte)

Haraka256 calculates the Harakaa v2 hash of a 256-bit input and places the 256-bit result in output.

func Haraka512

func Haraka512(output *[32]byte, input *[64]byte)

Haraka512 calculates the Harakaa v2 hash of a 512-bit input and places the 256-bit result in output.