root/lang/csharp/Tools/HashGen.cs

//
// HashGen
//
// $Id$
//
using System;
using System.IO;
using System.Text;
using System.Security.Cryptography;

public class HashGen
{
    public static Int32
    Main(String[] args)
    {
        SHA1 sha1 = SHA1.Create();
        MD5 md5 = MD5.Create();
        foreach (String path in args)
        {
            WriteHash("SHA1", sha1, path);
            WriteHash("MD5", md5, path);
        }

        return 0;
    }

    public static void WriteHash(String hashName, HashAlgorithm hashAlg, String path)
    {
        using (FileStream fsTarget = new FileStream(path, FileMode.Open))
        {
            using (StreamWriter fsWriter = new StreamWriter(new FileStream(path + "." + hashName.ToLowerInvariant(), FileMode.Create)))
            {
                fsWriter.Write("{0}({1})= ", hashName, Path.GetFileName(path));
                Byte[] hash = hashAlg.ComputeHash(fsTarget);
                foreach (Byte b in hash)
                    fsWriter.Write("{0:x2}", b);
            }
        }
    }
}