MD5加密

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

加密方法：

 public static string MD5JM(string strText)
    {
      
        MD5CryptoServiceProvider x = new MD5CryptoServiceProvider();
        byte[] bs = x.ComputeHash(Encoding.Default.GetBytes(strText));

        StringBuilder sb = new StringBuilder();
       
        foreach(byte b in bs)
        {
            sb.Append(b.ToString("x2").ToLower());
        }

        return sb.ToString();
    }