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

using (RSA rsa = RSA.Create())
{
    rsa.KeySize = 2048;

    // Export the public key
    var publicKey = rsa.ExportRSAPublicKey();
    Console.WriteLine("Public Key: " + Convert.ToBase64String(publicKey));

    // Export the private key
    var privateKey = rsa.ExportRSAPrivateKey();
    Console.WriteLine("Private Key: " + Convert.ToBase64String(privateKey));

    var message = "Some secret message";
    Console.WriteLine("Original message: " + message);
    
    // There are some of the paddings, but most common is PKCS
    var encryptedBytes = rsa.Encrypt(Encoding.UTF8.GetBytes(message), RSAEncryptionPadding.Pkcs1);
    Console.WriteLine("Encrypted message: " + Convert.ToBase64String(encryptedBytes));

    var decryptedBytes = rsa.Decrypt(encryptedBytes, RSAEncryptionPadding.Pkcs1);
    Console.WriteLine("Decrypted message: " + Encoding.UTF8.GetString(decryptedBytes));
}