C#实现的MD5加密功能与用法示例

public class MD5Str{  /// <summary>  /// 字符串MD5加密  /// </summary>  /// <param name="Text">要加密的字符串</param>  /// <returns>密文</returns>  public static string MD5(string Text)  {    byte[] buffer = System.Text.Encoding.Default.GetBytes(Text);    try    {      System.Security.Cryptography.MD5CryptoServiceProvider check;      check = new System.Security.Cryptography.MD5CryptoServiceProvider();      byte[] somme = check.ComputeHash(buffer);      string ret = "";      foreach (byte a in somme)      {        if (a < 16)          ret += "0" + a.ToString("X");        else          ret += a.ToString("X");      }      return ret.ToLower();    }    catch    {      throw;    }  }}

static void Main(string[] args){  string data = "123456789"; //要加密的数据  string encodeStr = "";  //加密后文本  encodeStr = MD5Str.MD5(data);  Console.WriteLine("原文本：{0}", data);  Console.WriteLine("加密后文本：{0}", encodeStr);  Console.Read();}