Ejemplo n.º 1
0
 /// <summary>
 /// 解密原函数
 /// </summary>
 /// <param name="pToDecrypt">加密后的密文</param>
 /// <param name="sKey">Key</param>
 /// <returns>返回加密前的明文</returns>
 public static string Decrypt(string pToDecrypt, string sKey = defaultKey)
 {
     try
     {
         DESCryptoServiceProvider des = new DESCryptoServiceProvider();
         byte[] inputByteArray        = new byte[pToDecrypt.Length / 2];
         for (int x = 0; x < pToDecrypt.Length / 2; x++)
         {
             int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
             inputByteArray[x] = (byte)i;
         }
         des.Key = Encoding.ASCII.GetBytes(MD5Helper.Md5Encryptor16(sKey).Substring(0, 8));
         des.IV  = Encoding.ASCII.GetBytes(MD5Helper.Md5Encryptor16(sKey).Substring(0, 8));
         MemoryStream ms = new MemoryStream();
         CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
         cs.Write(inputByteArray, 0, inputByteArray.Length);
         cs.FlushFinalBlock();
         StringBuilder ret = new StringBuilder();
         return(System.Text.Encoding.Default.GetString(ms.ToArray()));
     }
     catch { return(null); }
 }
Ejemplo n.º 2
0
 /// <summary>
 /// 加密原函数
 /// </summary>
 /// <param name="pToEncrypt">加密前的明文</param>
 /// <param name="sKey">Key</param>
 /// <returns>返回加密后的密文</returns>
 public static string Encrypt(string pToEncrypt, string sKey = defaultKey)
 {
     try
     {
         DESCryptoServiceProvider des = new DESCryptoServiceProvider();
         byte[] inputByteArray        = Encoding.Default.GetBytes(pToEncrypt);
         des.Key = Encoding.ASCII.GetBytes(MD5Helper.Md5Encryptor16(sKey).Substring(0, 8));
         des.IV  = Encoding.ASCII.GetBytes(MD5Helper.Md5Encryptor16(sKey).Substring(0, 8));
         MemoryStream ms = new 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);
         }
         ret.ToString();
         return(ret.ToString());
     }
     catch { return(null); }
 }