Sumhash

A Go implementation of Algorand’s subset-sum hash function. The library exports the subset sum hash function via a hash.Hash interface.

Install

go get github.com/algorand/go-sumhash

Alternatively the same can be achieved if you use import in a package:

import "github.com/algorand/go-sumhash"

and run go get without parameters.

Usage

Construct a sumhash instance with block size of 512.

package main

import (
	"fmt"

	"github.com/algorand/go-sumhash"
)

func main() {
	h := sumhash.New512(nil)
	input := []byte("sumhash input")
	_, _ = h.Write(input)

	sum := h.Sum(nil)
	fmt.Printf("subset sum hash value: %X", sum)
}

Testing

go test ./...

Spec

The specification of the function as well as the security parameters can be found here