SHA1 ,MD5 加密

using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;

namespace Qifan.Common
{
    /**//// <summary>
    /// 加密/解密字符串
    /// </summary>
    public class Security
    {
        /**//// <summary>
        /// MD5 加密
        /// </summary>
        /// <param name="passWord">需要加密的字符串</param>
        /// <returns>加密后的字符串</returns>
        public static string Md5(string passWord)
        {
            Byte[] clearBytes = new UnicodeEncoding().GetBytes(passWord);
            Byte[] hashedBytes = ((HashAlgorithm)CryptoConfig.CreateFromName("MD5")).ComputeHash(clearBytes);
            return BitConverter.ToString(hashedBytes);
        }

        /**//// <summary>
        /// SHA1 加密
        /// </summary>
        /// <param name="passWord">需要加密的字符串</param>
        /// <returns>加密后的字符串</returns>
        public static string Sha1(string passWord)
        {
            Byte[] clearBytes = new UnicodeEncoding().GetBytes(passWord);
            Byte[] hashedBytes = ((HashAlgorithm)CryptoConfig.CreateFromName("SHA1")).ComputeHash(clearBytes);
            return BitConverter.ToString(hashedBytes);
        }
    }
}