/C#/Encrypt with public key and decrypt with private key c#

Encrypt with public key and decrypt with private key c#

private static string _privateKey;
private static string _publicKey;
private static UnicodeEncoding _encoder = new UnicodeEncoding();

private static void RSA()
{
  var rsa = new RSACryptoServiceProvider();
  _privateKey = rsa.ToXmlString(true);
  _publicKey = rsa.ToXmlString(false);

  var text = "Test1";
  Console.WriteLine("RSA // Text to encrypt: " + text);
  var enc = Encrypt(text);
  Console.WriteLine("RSA // Encrypted Text: " + enc);
  var dec = Decrypt(enc);
  Console.WriteLine("RSA // Decrypted Text: " + dec);
}

public static string Decrypt(string data)
{
  var rsa = new RSACryptoServiceProvider();
  var dataArray = data.Split(new char[] { ',' });
  byte[] dataByte = new byte[dataArray.Length];
  for (int i = 0; i < dataArray.Length; i++)
  {
    dataByte[i] = Convert.ToByte(dataArray[i]);
  }

  rsa.FromXmlString(_privateKey);
  var decryptedByte = rsa.Decrypt(dataByte, false);
  return _encoder.GetString(decryptedByte);
}

public static string Encrypt(string data)
{
  var rsa = new RSACryptoServiceProvider();
  rsa.FromXmlString(_publicKey);
  var dataToEncrypt = _encoder.GetBytes(data);
  var encryptedByteArray = rsa.Encrypt(dataToEncrypt, false).ToArray();
  var length = encryptedByteArray.Count();
  var item = 0;
  var sb = new StringBuilder();
  foreach (var x in encryptedByteArray)
  {
    item++;
    sb.Append(x);

    if (item < length)
      sb.Append(",");
  }

  return sb.ToString();
}

Source: stackoverflow.com

Similar codes

0 vote130 views2 answers
CS0120: An object reference is required for the non-static field, method, or property 'PlayerControls.currentState'
C#
0 vote134 views1 answer
C# write line variable
C#
8 votes124 views1 answer
C# get first 5 characters of string
C#
0 vote183 views1 answer
How to download somthing from one drive unity
C#Unity
1 vote129 views1 answer
Datetime to hh:mm c#
C#
1 vote219 views1 answer
Unity instantiate with name
C#Unity
0 vote125 views1 answer
How to count letters in c#
C#
28 votes164 views3 answers
Destroy gameobject unity
C#Unity
0 vote127 views1 answer
If statement to compare between multi data
C#
0 vote125 views1 answer
Reload usercontol wpf
C#