/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 vote210 views1 answer
The term 'Scaffold-DbContext' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again
C#
3 votes193 views1 answer
Create line in unity
C#
0 vote159 views1 answer
Eager loading c#
C#
0 vote161 views1 answer
C# listview add items horizontally
C#
2 votes157 views1 answer
How to download something from onedrive unity
C#Unity
0 vote194 views2 answers
Wpf yes no message box exit
C#
-1 vote180 views1 answer
String.Format() C#
C#
1 vote192 views1 answer
Unity put children in list
C#
1 vote164 views1 answer
C# integer to bit string
C#
0 vote221 views1 answer
LINQ query on a DataTable C#
C#