c#实现MD5加密

MD5加密，生成32为纯字符串，需要引用一下两个命名空间

using System.Security.Cryptography;

using System.Text;

 public string md5(string str)
 {

         MD5 m = new MD5CryptoServiceProvider();

         byte[] s =m.ComputeHash(UnicodeEncoding.UTF8.GetBytes(str));

         return BitConverter.ToString(s).Replace("-","");  //移除“-”

}