Decrypt String

Bernat Nosas

decrypt

Static function to dencrypt a string passed as parameter. It requires a dencription key as well.

using System;
using System.Security.Cryptography;
using System.Text;

/// <summary>
/// Dencrypts input string
/// </summary>
/// <param name="input">string to dencrypt</param>
/// <returns>dencrypted result</returns>
public static string Decrypt(string input, string encryption_key)
{
	byte[] inputArray = Convert.FromBase64String(input);
  TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider();
  tripleDES.Key = UTF8Encoding.UTF8.GetBytes(encryption_key);
  tripleDES.Mode = CipherMode.ECB;
  tripleDES.Padding = PaddingMode.PKCS7;
  ICryptoTransform cTransform = tripleDES.CreateDecryptor();
  byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
  tripleDES.Clear();
  return UTF8Encoding.UTF8.GetString(resultArray);
}