DescryptPinBlobk

CSharp · Console

/Program.cs

using System;
using System.Diagnostics;
using System.Security.Cryptography;
using System.Text;
					
public class Program
{
	private const string _securityKey = "BA73F294584334BA";
	public static void Main()
	{
		var encryptedText = "9A7DA532324509A3";
        var decryptedText = DecryptCipherTextToPlainText(encryptedText);
		Console.WriteLine("DecryptedText = " + decryptedText);
        Console.ReadLine();
	}
	
	public static string DecryptCipherTextToPlainText(string textoCriptografado)
    {
            
            byte[] toEncryptArray = Convert.FromBase64String(textoCriptografado);

            MD5CryptoServiceProvider objMD5CryptoService = new MD5CryptoServiceProvider();

            //Gettting the bytes from the Security Key and Passing it to compute the Corresponding Hash Value.
            byte[] securityKeyArray = objMD5CryptoService.ComputeHash(UTF8Encoding.UTF8.GetBytes(_securityKey));

            //De-allocatinng the memory after doing the Job.
            objMD5CryptoService.Clear();

            var objTripleDESCryptoService = new TripleDESCryptoServiceProvider();

            //Assigning the Security key to the TripleDES Service Provider.
            objTripleDESCryptoService.Key = securityKeyArray;

            //Mode of the Crypto service is Electronic Code Book.
            objTripleDESCryptoService.Mode = CipherMode.ECB;

            //Padding Mode is PKCS7 if there is any extra byte is added.
            objTripleDESCryptoService.Padding = PaddingMode.None;

            byte[] DataToDecrypt = Convert.FromBase64String(textoCriptografado);

            var objCrytpoTransform = objTripleDESCryptoService.CreateDecryptor();

            //Transform the bytes array to resultArray
            byte[] resultArray = objCrytpoTransform.TransformFinalBlock(DataToDecrypt, 0, DataToDecrypt.Length);

            //Releasing the Memory Occupied by TripleDES Service Provider for Decryption.          
            objTripleDESCryptoService.Clear();

            //Convert and return the decrypted data/byte into string format.
            return UTF8Encoding.UTF8.GetString(resultArray);
     }
	
	 public static string EncryptPlainTextToCipherText(string textoPlano)
     {
            
            //Getting the bytes of Input String.
            byte[] toEncryptedArray = UTF8Encoding.UTF8.GetBytes(textoPlano);

            MD5CryptoServiceProvider objMD5CryptoService = new MD5CryptoServiceProvider();

            //Gettting the bytes from the Security Key and Passing it to compute the Corresponding Hash Value.
            byte[] securityKeyArray = objMD5CryptoService.ComputeHash(UTF8Encoding.UTF8.GetBytes(_securityKey));

            //De-allocatinng the memory after doing the Job.
            objMD5CryptoService.Clear();
            
            var objTripleDESCryptoService = new TripleDESCryptoServiceProvider();

            //Assigning the Security key to the TripleDES Service Provider.
            objTripleDESCryptoService.Key = securityKeyArray;

            //Mode of the Crypto service is Electronic Code Book.
            objTripleDESCryptoService.Mode = CipherMode.ECB;

            //Padding Mode is PKCS7 if there is any extra byte is added.
            objTripleDESCryptoService.Padding = PaddingMode.None;

            var objCrytpoTransform = objTripleDESCryptoService.CreateEncryptor();

            //Transform the bytes array to resultArray
            byte[] resultArray = objCrytpoTransform.TransformFinalBlock(toEncryptedArray, 0, toEncryptedArray.Length);

            //Releasing the Memory Occupied by TripleDES Service Provider for Encryption.
            objTripleDESCryptoService.Clear();

            //Convert and return the encrypted data/byte into string format.
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);



      }

	
	
	
}