RSA-C#-Eddy^CZ

 class RSA
 {

  /* RSA Encrypt&Decrypt by Eddy^CZ 2018
   * Author: Eddy^CZ 2018
   * Date: 18.12.2018 (23:54)
   */

  /// <summary>
  /// Modded RSA Encryption by Eddy^CZ 2018
  /// </summary>
  /// <param name="data">Input number in Int32</param>
  /// <param name="modulus">RSA</param>
  /// <param name="exponent">RSA</param>
  /// <param name="p">RSA</param>
  /// <param name="q">RSA</param>
  /// <param name="dp">RSA</param>
  /// <param name="dq">RSA</param>
  /// <param name="inverseq">RSA</param>
  /// <param name="d">RSA</param>
  /// <returns>Return data in HEX</returns>
  public string Encrypt(int data , string modulus, string exponent, string p , string q, string dp, string dq, string inverseq, string d)
  {
   /* Input data */
   byte[] data_b = BitConverter.GetBytes(data);
   /* ------------------------------------------------ */

   /* Get RSA Parameters from arguments */
   RSAParameters rsa_params = new RSAParameters();
   rsa_params.Modulus = Encoding.Default.GetBytes(modulus);
   rsa_params.Exponent = Encoding.Default.GetBytes(exponent);
   rsa_params.P = Encoding.Default.GetBytes(p);
   rsa_params.Q = Encoding.Default.GetBytes(q);
   rsa_params.DP = Encoding.Default.GetBytes(dp);
   rsa_params.DQ = Encoding.Default.GetBytes(dq);
   rsa_params.InverseQ = Encoding.Default.GetBytes(inverseq);
   rsa_params.D = Encoding.Default.GetBytes(d);
   /* -----------------------------------------------------------*/

   /* Create instance of RSA and import parameters */
   RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
   rsa.ImportParameters(rsa_params);
   /* ---------------------------------------------------------------- */

   /* RSA Encrypt */
   byte[] data_e = rsa.Encrypt(data_b, false);
   /* ---------------------------------------------- */

   /* Encrypted byte[] to HEX */
   StringBuilder result = new StringBuilder(data_e.Length * 2);
   foreach (byte b in data_e)
   {
    result.AppendFormat("{0:x2}", b);
   }
   return result.ToString();
   /* -------------------------------------------------------- */
  }

  /// <summary>
  /// Modded RSA Decryption by Eddy^CZ 2018
  /// </summary>
  /// <param name="data">RSA</param>
  /// <param name="modulus">RSA</param>
  /// <param name="exponent">RSA</param>
  /// <param name="p">RSA</param>
  /// <param name="q">RSA</param>
  /// <param name="dp">RSA</param>
  /// <param name="dq">RSA</param>
  /// <param name="inverseq">RSA</param>
  /// <param name="d">RSA</param>
  /// <returns>Return decrypted data as Int32</returns>
  public int Decrypt(string data, string modulus, string exponent, string p, string q, string dp, string dq, string inverseq, string d)
  {

   /* Input HEX to byte[] */
   int len = data.Length;
   byte[] bytes = new byte[len / 2];
   for (int i = 0; i < len; i += 2)
   {
    bytes[i / 2] = Convert.ToByte(data.Substring(i, 2), 16);
   }
   /* ---------------------------------------------------------- */

   /* Get RSA Parameters from arguments */
   RSAParameters rsa_params = new RSAParameters();
   rsa_params.Modulus = Encoding.Default.GetBytes(modulus);
   rsa_params.Exponent = Encoding.Default.GetBytes(exponent);
   rsa_params.P = Encoding.Default.GetBytes(p);
   rsa_params.Q = Encoding.Default.GetBytes(q);
   rsa_params.DP = Encoding.Default.GetBytes(dp);
   rsa_params.DQ = Encoding.Default.GetBytes(dq);
   rsa_params.InverseQ = Encoding.Default.GetBytes(inverseq);
   rsa_params.D = Encoding.Default.GetBytes(d);
   /* -----------------------------------------------------------*/

   /* Create instance of RSA and import parameters */
   RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
   rsa.ImportParameters(rsa_params);
   /* -------------------------------------------------------------*/

   /* RSA Decrypt */
   byte[] decoded = rsa.Decrypt(bytes, false);
   /* ------------------------------------------*/

   /* Result byte[] to HEX */
   int result = BitConverter.ToInt32(decoded, 0);
   return result;
   /* -------------------------------------------------------------*/
  }

 }