kreta/Framework/Security/PasswordCrypting/BasePasswordCrypter.cs

using System;
using System.Security.Cryptography;
using System.Text;

namespace Kreta.Framework.Security.PasswordCrypting
{
    public static class BasePasswordCrypter
    {
        public static string EncodePasswordSHA1(string plainPassword, string salt)
        {
            if (string.IsNullOrWhiteSpace(salt))
            {
                return plainPassword;
            }

            string saltedPlainPassword = plainPassword + salt;
            using (HashAlgorithm hash = SHA1.Create())
            {
                byte[] passwordarray = Encoding.Unicode.GetBytes(saltedPlainPassword);
                byte[] hasharray = hash.ComputeHash(passwordarray);

                string encryptedPassword = Convert.ToBase64String(hasharray);

                return encryptedPassword;
            }
        }

        public static string EncodePasswordMD5(string plainPassword)
        {
            using (HashAlgorithm hash = MD5.Create())
            {
                byte[] passwordArray = hash.ComputeHash(Encoding.UTF8.GetBytes(plainPassword));
                StringBuilder stringBuilder = new StringBuilder();

                foreach (byte item in passwordArray)
                {
                    stringBuilder.Append(item.ToString("x2"));
                }
                var result = stringBuilder.ToString();

                return result;
            }
        }
    }
}