using System;

using System.Diagnostics;

using System.Security.Cryptography;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        var iterations = 1000000;

        var bytes = new byte[100];

        var random = new Random();

​

        var stopwatch = new Stopwatch();

        stopwatch.Start();

        for (var i = 0; i < iterations; i++)

        {          

            random.NextBytes(bytes);

            JenkinsHash(bytes);

        }

        stopwatch.Start();

        Console.WriteLine(string.Format("Jenkins: {0}", stopwatch.ElapsedMilliseconds/1000.0));

​

        var md5 = MD5.Create();

        stopwatch = new Stopwatch();

        stopwatch.Start();

        for (var i = 0; i < iterations; i++)

        {

            random.NextBytes(bytes);

            var md5Hash = md5.ComputeHash(bytes);

            BitConverter.ToInt32(md5Hash, 0);

        }

        stopwatch.Start();

        Console.WriteLine(string.Format("MD5: {0}", stopwatch.ElapsedMilliseconds / 1000.0));

​

        stopwatch = new Stopwatch();

        stopwatch.Start();

        for (var i = 0; i < iterations; i++)

        {

            random.NextBytes(bytes);

            foreach (var byte_ in bytes)

            {

                var dummy = 1;

            }

        }

        stopwatch.Start();

        Console.WriteLine(string.Format("Jenkins: {0}", stopwatch.ElapsedMilliseconds/1000.0));

    }

    public static int JenkinsHash(byte[] key)

    {

        uint hash = 0;

​

        foreach (var byte_ in key)

        {

            hash += byte_;

            hash += hash << 10;

            hash ^= hash >> 6;

        }

​

        hash += hash << 3;

        hash ^= hash >> 11;

        hash += hash << 15;

​

        return (int)hash;

    }

}