Benchmark comparison of cryptographic hashes in Go

hash_test.go

package main

import (
	"crypto/md5"
	"crypto/rand"
	"crypto/sha1"
	"crypto/sha256"
	"crypto/sha512"
	"testing"
)

var data []byte

func init() {
	// Create a big blob of random data
	data = make([]byte, 1024*1024)
	rand.Read(data)
}

func BenchmarkMD5(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_ = md5.Sum(data)
	}
}

func BenchmarkSHA1(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_ = sha1.Sum(data)
	}
}

func BenchmarkSHA224(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_ = sha256.Sum224(data)
	}
}

func BenchmarkSHA256(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_ = sha256.Sum256(data)
	}
}

func BenchmarkSHA384(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_ = sha512.Sum384(data)
	}
}

func BenchmarkSHA512(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_ = sha512.Sum512(data)
	}
}

On my Windows box:

BenchmarkMD5        1000           2506318 ns/op
BenchmarkSHA1       1000           2993381 ns/op
BenchmarkSHA224      100          10041285 ns/op
BenchmarkSHA256      100          10031281 ns/op
BenchmarkSHA384       50          35564550 ns/op
BenchmarkSHA512       50          35324482 ns/op

On my Mac box:

BenchmarkMD5        1000       2012278 ns/op
BenchmarkSHA1       1000       2642285 ns/op
BenchmarkSHA224      500       7032779 ns/op
BenchmarkSHA256      500       6978278 ns/op
BenchmarkSHA384      500       4506975 ns/op
BenchmarkSHA512      500       4517548 ns/op