CreateHashFile.cs

using CreateHashFile.Enum;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace System
{
 public static class CreateHashFile
 {
 public static string ObterHashDoArquivo(TipoDeHash.Hash pTipoHash, string pCaminhoDoArquivo)
 {
 var stringBuilder = new StringBuilder();

 using (var file = new FileStream(pCaminhoDoArquivo, FileMode.Open))
 {
 HashAlgorithm hash;

 if (pTipoHash == TipoDeHash.Hash.Md5)
 {
 hash = new MD5CryptoServiceProvider();
 }
 else
 {
 hash = new SHA1CryptoServiceProvider();
 }

 if (hash != null)
 {
 var retVal = hash.ComputeHash(file);
 for (int i = 0; i < retVal.Length; i++)
 {
 stringBuilder.Append(retVal[i].ToString("x2"));
 }
 }

 hash.Dispose();
 }

 return stringBuilder.ToString();
 }
 }
}