C# SHA1与MD5加密方法

[天狼守徒]

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data;

using System.Security.Cryptography;

using System.Text;

/// <summary>

///MyHash 的摘要说明

/// </summary>

public class MyHash

{

    public MyHash()

    {

       //

       //TODO: 在此处添加构造函数逻辑

       //

    }

    /// <summary>

    /// SHA1加密方法

    /// </summary>

    /// <param name="old_string">原来的字符串作为参数传进来</param>

    /// <returns>new_string返回加密后的新字符串（长度是40位）</returns>

    public static string SHA1_Hash(string old_string)

    {

        SHA1 sha1 = new SHA1CryptoServiceProvider();

        byte[] bytes_old_string = UTF8Encoding.Default.GetBytes(old_string);

        byte[] bytes_new_string = sha1.ComputeHash(bytes_old_string);

        string new_string = BitConverter.ToString(bytes_new_string);

        new_string = new_string.Replace("-", "").ToUpper();

        return new_string;

    }

    /// <summary>

    /// MD5加密方法

    /// </summary>

    /// <param name="old_string">原来的字符串作为参数传进来</param>

    /// <returns>new_string返回加密后的新字符串（长度是32位）</returns>

    public static string MD5_Hash(string old_string)

    {

        MD5 md5 = new MD5CryptoServiceProvider();

        byte[] bytes_old_string = UTF8Encoding.Default.GetBytes(old_string);

        byte[] bytes_new_string = md5.ComputeHash(bytes_old_string);

        string new_string = BitConverter.ToString(bytes_new_string);

        new_string = new_string.Replace("-","").ToUpper();

        return new_string;

    }

}

[赵4老师]

请楼主移驾C#论坛。http://bbs.csdn.net/forums/CSharp