Hello,

It appears that highwayhash returns a different hash in applications built with go v1.16.2 on linux/arm64.
Below you can find the sample code:

package main

import (
	"fmt"

	"github.com/minio/highwayhash"
)

var zeroHashKey = make([]byte, 32)

func main() {
	h, err := highwayhash.New(zeroHashKey)
	if err != nil {
		panic(err)
	}

	h.Write([]byte("highwayhash"))
	var r []byte

	fmt.Printf("%X\n", h.Sum(r))
}

It was build with:

• go version go1.14.15 linux/arm64
  Output: 9CDC5F01022BDA9C24EF02BF64FB0D08BF7A55C9BD672D1AF16C25BB68047A60

• go version go1.16.2 linux/arm64
  Output: 3A6E473DFDAB6331F90B3160D586CC1E05CAFFB09F854935991C026E7A1D4B59

• the Go Playground running go1.16.2
  Output: 9CDC5F01022BDA9C24EF02BF64FB0D08BF7A55C9BD672D1AF16C25BB68047A60

• go version go1.16.2 windows/amd64
  Output: 9CDC5F01022BDA9C24EF02BF64FB0D08BF7A55C9BD672D1AF16C25BB68047A60

Highway version: v1.0.1
As you can see, in go1.16.2 linux/arm64 a wrong value is returned, even on different hosts.