asp.net MD5数据加密和解密-白红宇

asp.net MD5数据加密和解密

阅读量：5095 次

发布时间：2019-06-13

本文共 2604 字，大约阅读时间需要 8 分钟。

#region ========加密======== ///  /// 加密 /// 
 ///  /// 
       public static string Encrypt(string Text)         {
   return Encrypt(Text, "Tony");         } ///  /// 加密数据 /// 
 ///  ///  /// 
       public static string Encrypt(string Text, string sKey)         {
               DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByteArray;             inputByteArray = Encoding.Default.GetBytes(Text);             des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));             des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));             System.IO.MemoryStream ms = new System.IO.MemoryStream();             CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);             cs.Write(inputByteArray, 0, inputByteArray.Length);             cs.FlushFinalBlock();             StringBuilder ret = new StringBuilder(); foreach (byte b in ms.ToArray())             {
                   ret.AppendFormat("{0:X2}", b);             } return ret.ToString();         } #endregion

--------------------------------------我是华丽的分割线---------------------------

#region ========解密======== ///  /// 解密 /// 
 ///  /// 
       public static string Decrypt(string Text)         {
   return Decrypt(Text, "Tony");         } ///  /// 解密数据 /// 
 ///  ///  /// 
       public static string Decrypt(string Text, string sKey)         {
               DESCryptoServiceProvider des = new DESCryptoServiceProvider(); int len;             len = Text.Length / 2; byte[] inputByteArray = new byte[len]; int x, i; for (x = 0; x < len; x++)             {
                   i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);                 inputByteArray[x] = (byte)i;             }             des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));             des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));             System.IO.MemoryStream ms = new System.IO.MemoryStream();             CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);             cs.Write(inputByteArray, 0, inputByteArray.Length);             cs.FlushFinalBlock(); return Encoding.Default.GetString(ms.ToArray());         } #endregion