C#实现的MD5加密功能与用法示例

 public class MD5Str { /// 
 /// 字符串MD5加密 /// 
 /// 要加密的字符串 /// 密文 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(); }